Merge pull request #12 from kmc7468/dev

v0.5.0

Dockerfile

@@ -2,7 +2,11 @@
 FROM node:22-alpine AS base
 WORKDIR /app
 
-RUN npm install -g pnpm@10
+RUN apk add --no-cache bash curl && \
+    curl -o /usr/local/bin/wait-for-it https://raw.githubusercontent.com/vishnubob/wait-for-it/master/wait-for-it.sh && \
+    chmod +x /usr/local/bin/wait-for-it
+
+RUN npm install -g pnpm@9
 COPY pnpm-lock.yaml .
 
 # Build Stage
@@ -25,4 +29,4 @@ COPY --from=build /app/build ./build
 
 EXPOSE 3000
 ENV BODY_SIZE_LIMIT=Infinity
-CMD ["node", "./build/index.js"]
+CMD ["bash", "-c", "wait-for-it ${DATABASE_HOST:-localhost}:${DATABASE_PORT:-5432} -- node ./build/index.js"]

docker-compose.yaml

@@ -3,8 +3,7 @@ services:
     build: .
     restart: unless-stopped
     depends_on:
-      database:
-        condition: service_healthy
+      - database
     user: ${CONTAINER_UID:-0}:${CONTAINER_GID:-0}
     volumes:
       - ./data/library:/app/data/library
@@ -36,8 +35,3 @@ services:
     environment:
       - POSTGRES_USER=arkvault
       - POSTGRES_PASSWORD=${DATABASE_PASSWORD:?}
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER}"]
-      interval: 5s
-      timeout: 5s
-      retries: 5

eslint.config.js

@@ -1,24 +1,21 @@
-import { includeIgnoreFile } from "@eslint/compat";
-import js from "@eslint/js";
-import { defineConfig } from "eslint/config";
 import prettier from "eslint-config-prettier";
+import js from "@eslint/js";
+import { includeIgnoreFile } from "@eslint/compat";
 import svelte from "eslint-plugin-svelte";
 import tailwind from "eslint-plugin-tailwindcss";
 import globals from "globals";
+import { fileURLToPath } from "node:url";
 import ts from "typescript-eslint";
-import { fileURLToPath } from "url";
-import svelteConfig from "./svelte.config.js";
-
 const gitignorePath = fileURLToPath(new URL("./.gitignore", import.meta.url));
 
-export default defineConfig(
+export default ts.config(
   includeIgnoreFile(gitignorePath),
   js.configs.recommended,
   ...ts.configs.recommended,
-  ...svelte.configs.recommended,
+  ...svelte.configs["flat/recommended"],
   ...tailwind.configs["flat/recommended"],
   prettier,
-  ...svelte.configs.prettier,
+  ...svelte.configs["flat/prettier"],
   {
     languageOptions: {
       globals: {
@@ -26,18 +23,13 @@ export default defineConfig(
         ...globals.node,
       },
     },
-    rules: {
-      "no-undef": "off",
-    },
   },
   {
-    files: ["**/*.svelte", "**/*.svelte.ts", "**/*.svelte.js"],
+    files: ["**/*.svelte"],
+
     languageOptions: {
       parserOptions: {
-        projectService: true,
-        extraFileExtensions: [".svelte"],
         parser: ts.parser,
-        svelteConfig,
       },
     },
   },

package.json

@@ -1,7 +1,7 @@
 {
   "name": "arkvault",
   "private": true,
-  "version": "0.6.0",
+  "version": "0.5.0",
   "type": "module",
   "scripts": {
     "dev": "vite dev",
@@ -16,57 +16,53 @@
     "db:migrate": "kysely migrate"
   },
   "devDependencies": {
-    "@eslint/compat": "^2.0.0",
-    "@iconify-json/material-symbols": "^1.2.50",
-    "@sveltejs/adapter-node": "^5.4.0",
-    "@sveltejs/kit": "^2.49.2",
-    "@sveltejs/vite-plugin-svelte": "^6.2.1",
-    "@tanstack/svelte-virtual": "^3.13.13",
-    "@trpc/client": "^11.8.1",
+    "@eslint/compat": "^1.3.1",
+    "@iconify-json/material-symbols": "^1.2.29",
+    "@sveltejs/adapter-node": "^5.2.13",
+    "@sveltejs/kit": "^2.22.5",
+    "@sveltejs/vite-plugin-svelte": "^4.0.4",
     "@types/file-saver": "^2.0.7",
     "@types/ms": "^0.7.34",
     "@types/node-schedule": "^2.1.8",
-    "@types/pg": "^8.16.0",
-    "autoprefixer": "^10.4.23",
-    "axios": "^1.13.2",
-    "dexie": "^4.2.1",
-    "eslint": "^9.39.2",
-    "eslint-config-prettier": "^10.1.8",
-    "eslint-plugin-svelte": "^3.13.1",
-    "eslint-plugin-tailwindcss": "^3.18.2",
-    "exifreader": "^4.33.1",
+    "@types/pg": "^8.15.4",
+    "autoprefixer": "^10.4.21",
+    "axios": "^1.10.0",
+    "dexie": "^4.0.11",
+    "eslint": "^9.30.1",
+    "eslint-config-prettier": "^10.1.5",
+    "eslint-plugin-svelte": "^3.10.1",
+    "eslint-plugin-tailwindcss": "^3.18.0",
+    "exifreader": "^4.31.1",
     "file-saver": "^2.0.5",
-    "globals": "^16.5.0",
+    "globals": "^16.3.0",
     "heic2any": "^0.0.4",
-    "kysely-ctl": "^0.19.0",
-    "lru-cache": "^11.2.4",
-    "mime": "^4.1.0",
-    "p-limit": "^7.2.0",
-    "prettier": "^3.7.4",
-    "prettier-plugin-svelte": "^3.4.1",
-    "prettier-plugin-tailwindcss": "^0.7.2",
-    "svelte": "^5.46.1",
-    "svelte-check": "^4.3.5",
-    "tailwindcss": "^3.4.19",
-    "typescript": "^5.9.3",
-    "typescript-eslint": "^8.50.1",
-    "unplugin-icons": "^22.5.0",
-    "vite": "^7.3.0"
+    "kysely-ctl": "^0.13.1",
+    "lru-cache": "^11.1.0",
+    "mime": "^4.0.7",
+    "p-limit": "^6.2.0",
+    "prettier": "^3.6.2",
+    "prettier-plugin-svelte": "^3.4.0",
+    "prettier-plugin-tailwindcss": "^0.6.14",
+    "svelte": "^5.35.6",
+    "svelte-check": "^4.2.2",
+    "tailwindcss": "^3.4.17",
+    "typescript": "^5.8.3",
+    "typescript-eslint": "^8.36.0",
+    "unplugin-icons": "^22.1.0",
+    "vite": "^5.4.19"
   },
   "dependencies": {
-    "@fastify/busboy": "^3.2.0",
-    "@trpc/server": "^11.8.1",
-    "argon2": "^0.44.0",
-    "kysely": "^0.28.9",
+    "@fastify/busboy": "^3.1.1",
+    "argon2": "^0.43.0",
+    "kysely": "^0.28.2",
     "ms": "^2.1.3",
     "node-schedule": "^2.1.1",
     "pg": "^8.16.3",
-    "superjson": "^2.2.6",
-    "uuid": "^13.0.0",
-    "zod": "^4.2.1"
+    "uuid": "^11.1.0",
+    "zod": "^3.25.76"
   },
   "engines": {
     "node": "^22.0.0",
-    "pnpm": "^10.0.0"
+    "pnpm": "^9.0.0"
   }
 }

src/lib/components/atoms/RowVirtualizer.svelte

@@ -1,60 +0,0 @@
-<script lang="ts">
-  import { createWindowVirtualizer } from "@tanstack/svelte-virtual";
-  import type { Snippet } from "svelte";
-  import type { ClassValue } from "svelte/elements";
-
-  interface Props {
-    class?: ClassValue;
-    count: number;
-    item: Snippet<[index: number]>;
-    itemHeight: (index: number) => number;
-    itemGap?: number;
-    placeholder?: Snippet;
-  }
-
-  let { class: className, count, item, itemHeight, itemGap, placeholder }: Props = $props();
-
-  let element: HTMLElement | undefined = $state();
-  let scrollMargin = $state(0);
-
-  let virtualizer = $derived(
-    createWindowVirtualizer({
-      count,
-      estimateSize: itemHeight,
-      gap: itemGap,
-      scrollMargin,
-    }),
-  );
-
-  const measureItem = (node: HTMLElement) => {
-    $effect(() => $virtualizer.measureElement(node));
-  };
-
-  $effect(() => {
-    if (!element) return;
-
-    const observer = new ResizeObserver(() => {
-      scrollMargin = element!.getBoundingClientRect().top + window.scrollY;
-    });
-    observer.observe(element.parentElement!);
-    return () => observer.disconnect();
-  });
-</script>
-
-<div bind:this={element} class={["relative", className]}>
-  <div style:height="{$virtualizer.getTotalSize()}px">
-    {#each $virtualizer.getVirtualItems() as virtualItem (virtualItem.key)}
-      <div
-        class="absolute left-0 top-0 w-full"
-        style:transform="translateY({virtualItem.start - scrollMargin}px)"
-        data-index={virtualItem.index}
-        use:measureItem
-      >
-        {@render item(virtualItem.index)}
-      </div>
-    {/each}
-  </div>
-  {#if placeholder && $virtualizer.getVirtualItems().length === 0}
-    {@render placeholder()}
-  {/if}
-</div>

src/lib/components/atoms/buttons/FileThumbnailButton.svelte

@@ -1,34 +0,0 @@
-<script lang="ts">
-  import { browser } from "$app/environment";
-  import type { SummarizedFileInfo } from "$lib/modules/filesystem";
-  import { requestFileThumbnailDownload } from "$lib/services/file";
-
-  interface Props {
-    info: SummarizedFileInfo;
-    onclick?: (file: SummarizedFileInfo) => void;
-  }
-
-  let { info, onclick }: Props = $props();
-
-  let showThumbnail = $derived(
-    browser && (info.contentType.startsWith("image/") || info.contentType.startsWith("video/")),
-  );
-  let thumbnailPromise = $derived(
-    showThumbnail ? requestFileThumbnailDownload(info.id, info.dataKey?.key) : null,
-  );
-</script>
-
-<button
-  onclick={onclick && (() => setTimeout(() => onclick(info), 100))}
-  class="aspect-square overflow-hidden rounded transition active:scale-95 active:brightness-90"
->
-  {#await thumbnailPromise}
-    <div class="h-full w-full bg-gray-100"></div>
-  {:then thumbnail}
-    {#if thumbnail}
-      <img src={thumbnail} alt={info.name} class="h-full w-full object-cover" />
-    {:else}
-      <div class="h-full w-full bg-gray-100"></div>
-    {/if}
-  {/await}
-</button>

src/lib/components/atoms/buttons/index.ts

@@ -1,6 +1,5 @@
 export { default as ActionEntryButton } from "./ActionEntryButton.svelte";
 export { default as Button } from "./Button.svelte";
 export { default as EntryButton } from "./EntryButton.svelte";
-export { default as FileThumbnailButton } from "./FileThumbnailButton.svelte";
 export { default as FloatingButton } from "./FloatingButton.svelte";
 export { default as TextButton } from "./TextButton.svelte";

src/lib/components/atoms/index.ts

@@ -3,4 +3,3 @@ export * from "./buttons";
 export * from "./divs";
 export * from "./inputs";
 export { default as Modal } from "./Modal.svelte";
-export { default as RowVirtualizer } from "./RowVirtualizer.svelte";

src/lib/components/molecules/Categories/Categories.svelte

@@ -1,29 +1,59 @@
 <script lang="ts">
-  import type { Component } from "svelte";
+  import { untrack, type Component } from "svelte";
   import type { SvelteHTMLElements } from "svelte/elements";
-  import type { SubCategoryInfo } from "$lib/modules/filesystem";
-  import { SortBy, sortEntries } from "$lib/utils";
+  import { get, type Writable } from "svelte/store";
+  import type { CategoryInfo } from "$lib/modules/filesystem";
+  import { SortBy, sortEntries } from "$lib/modules/util";
   import Category from "./Category.svelte";
   import type { SelectedCategory } from "./service";
 
   interface Props {
-    categories: SubCategoryInfo[];
+    categories: Writable<CategoryInfo | null>[];
     categoryMenuIcon?: Component<SvelteHTMLElements["svg"]>;
     onCategoryClick: (category: SelectedCategory) => void;
     onCategoryMenuClick?: (category: SelectedCategory) => void;
     sortBy?: SortBy;
   }
 
-  let { categories, categoryMenuIcon, onCategoryClick, onCategoryMenuClick }: Props = $props();
+  let {
+    categories,
+    categoryMenuIcon,
+    onCategoryClick,
+    onCategoryMenuClick,
+    sortBy = SortBy.NAME_ASC,
+  }: Props = $props();
 
-  let categoriesWithName = $derived(sortEntries(structuredClone($state.snapshot(categories))));
+  let categoriesWithName: { name?: string; info: Writable<CategoryInfo | null> }[] = $state([]);
+
+  $effect(() => {
+    categoriesWithName = categories.map((category) => ({
+      name: get(category)?.name,
+      info: category,
+    }));
+
+    const sort = () => {
+      sortEntries(categoriesWithName, sortBy);
+    };
+    return untrack(() => {
+      sort();
+
+      const unsubscribes = categoriesWithName.map((category) =>
+        category.info.subscribe((value) => {
+          if (category.name === value?.name) return;
+          category.name = value?.name;
+          sort();
+        }),
+      );
+      return () => unsubscribes.forEach((unsubscribe) => unsubscribe());
+    });
+  });
 </script>
 
 {#if categoriesWithName.length > 0}
   <div class="space-y-1">
-    {#each categoriesWithName as category}
+    {#each categoriesWithName as { info }}
       <Category
-        info={category}
+        {info}
         menuIcon={categoryMenuIcon}
         onclick={onCategoryClick}
         onMenuClick={onCategoryMenuClick}

src/lib/components/molecules/Categories/Category.svelte

@@ -1,26 +1,43 @@
 <script lang="ts">
   import type { Component } from "svelte";
   import type { SvelteHTMLElements } from "svelte/elements";
+  import type { Writable } from "svelte/store";
   import { ActionEntryButton } from "$lib/components/atoms";
   import { CategoryLabel } from "$lib/components/molecules";
-  import type { SubCategoryInfo } from "$lib/modules/filesystem";
+  import type { CategoryInfo } from "$lib/modules/filesystem";
   import type { SelectedCategory } from "./service";
 
   interface Props {
-    info: SubCategoryInfo;
+    info: Writable<CategoryInfo | null>;
     menuIcon?: Component<SvelteHTMLElements["svg"]>;
     onclick: (category: SelectedCategory) => void;
     onMenuClick?: (category: SelectedCategory) => void;
   }
 
   let { info, menuIcon, onclick, onMenuClick }: Props = $props();
+
+  const openCategory = () => {
+    const { id, dataKey, dataKeyVersion, name } = $info as CategoryInfo;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onclick({ id, dataKey, dataKeyVersion, name });
+  };
+
+  const openMenu = () => {
+    const { id, dataKey, dataKeyVersion, name } = $info as CategoryInfo;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onMenuClick!({ id, dataKey, dataKeyVersion, name });
+  };
 </script>
 
-<ActionEntryButton
-  class="h-12"
-  onclick={() => onclick(info)}
-  actionButtonIcon={menuIcon}
-  onActionButtonClick={() => onMenuClick?.(info)}
->
-  <CategoryLabel name={info.name} />
-</ActionEntryButton>
+{#if $info}
+  <ActionEntryButton
+    class="h-12"
+    onclick={openCategory}
+    actionButtonIcon={menuIcon}
+    onActionButtonClick={openMenu}
+  >
+    <CategoryLabel name={$info.name!} />
+  </ActionEntryButton>
+{/if}

src/lib/components/molecules/Categories/service.ts

@@ -1,7 +1,6 @@
-import type { DataKey } from "$lib/modules/filesystem";
-
 export interface SelectedCategory {
   id: number;
-  dataKey?: DataKey;
+  dataKey: CryptoKey;
+  dataKeyVersion: Date;
   name: string;
 }

src/lib/components/molecules/SubCategories.svelte

@@ -1,8 +1,10 @@
 <script lang="ts">
   import type { Component } from "svelte";
   import type { ClassValue, SvelteHTMLElements } from "svelte/elements";
+  import type { Writable } from "svelte/store";
   import { Categories, IconEntryButton, type SelectedCategory } from "$lib/components/molecules";
-  import type { CategoryInfo } from "$lib/modules/filesystem";
+  import { getCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem";
+  import { masterKeyStore } from "$lib/stores";
 
   import IconAddCircle from "~icons/material-symbols/add-circle";
 
@@ -25,6 +27,14 @@
     subCategoryCreatePosition = "bottom",
     subCategoryMenuIcon,
   }: Props = $props();
+
+  let subCategories: Writable<CategoryInfo | null>[] = $state([]);
+
+  $effect(() => {
+    subCategories = info.subCategoryIds.map((id) =>
+      getCategoryInfo(id, $masterKeyStore?.get(1)?.key!),
+    );
+  });
 </script>
 
 <div class={["space-y-1", className]}>
@@ -43,12 +53,14 @@
   {#if subCategoryCreatePosition === "top"}
     {@render subCategoryCreate()}
   {/if}
-  <Categories
-    categories={info.subCategories}
-    categoryMenuIcon={subCategoryMenuIcon}
-    onCategoryClick={onSubCategoryClick}
-    onCategoryMenuClick={onSubCategoryMenuClick}
-  />
+  {#key info}
+    <Categories
+      categories={subCategories}
+      categoryMenuIcon={subCategoryMenuIcon}
+      onCategoryClick={onSubCategoryClick}
+      onCategoryMenuClick={onSubCategoryMenuClick}
+    />
+  {/key}
   {#if subCategoryCreatePosition === "bottom"}
     {@render subCategoryCreate()}
   {/if}

src/lib/components/molecules/labels/DirectoryEntryLabel.svelte

@@ -3,7 +3,6 @@
   import { IconLabel } from "$lib/components/molecules";
 
   import IconFolder from "~icons/material-symbols/folder";
-  import IconDriveFolderUpload from "~icons/material-symbols/drive-folder-upload";
   import IconDraft from "~icons/material-symbols/draft";
 
   interface Props {
@@ -12,7 +11,7 @@
     subtext?: string;
     textClass?: ClassValue;
     thumbnail?: string;
-    type: "directory" | "parent-directory" | "file";
+    type: "directory" | "file";
   }
 
   let {
@@ -31,8 +30,6 @@
       <img src={thumbnail} alt={name} loading="lazy" class="aspect-square rounded object-cover" />
     {:else if type === "directory"}
       <IconFolder />
-    {:else if type === "parent-directory"}
-      <IconDriveFolderUpload class="text-yellow-500" />
     {:else}
       <IconDraft class="text-blue-400" />
     {/if}

src/lib/components/organisms/Category/Category.svelte

@@ -1,9 +1,11 @@
 <script lang="ts">
-  import { CheckBox, RowVirtualizer } from "$lib/components/atoms";
+  import { untrack } from "svelte";
+  import { get, type Writable } from "svelte/store";
+  import { CheckBox } from "$lib/components/atoms";
   import { SubCategories, type SelectedCategory } from "$lib/components/molecules";
-  import { updateCategoryInfo } from "$lib/indexedDB";
-  import type { CategoryInfo } from "$lib/modules/filesystem";
-  import { sortEntries } from "$lib/utils";
+  import { getFileInfo, type FileInfo, type CategoryInfo } from "$lib/modules/filesystem";
+  import { SortBy, sortEntries } from "$lib/modules/util";
+  import { masterKeyStore } from "$lib/stores";
   import File from "./File.svelte";
   import type { SelectedFile } from "./service";
 
@@ -11,12 +13,13 @@
 
   interface Props {
     info: CategoryInfo;
-    isFileRecursive: boolean | undefined;
     onFileClick: (file: SelectedFile) => void;
     onFileRemoveClick: (file: SelectedFile) => void;
     onSubCategoryClick: (subCategory: SelectedCategory) => void;
     onSubCategoryCreateClick: () => void;
     onSubCategoryMenuClick: (subCategory: SelectedCategory) => void;
+    sortBy?: SortBy;
+    isFileRecursive: boolean;
   }
 
   let {
@@ -26,31 +29,42 @@
     onSubCategoryClick,
     onSubCategoryCreateClick,
     onSubCategoryMenuClick,
+    sortBy = SortBy.NAME_ASC,
     isFileRecursive = $bindable(),
   }: Props = $props();
 
-  let lastCategoryId = $state<CategoryInfo["id"] | undefined>();
-  let lastIsFileRecursive = $state<boolean | undefined>();
-
-  let files = $derived(
-    sortEntries(
-      info.files
-        ?.map((file) => ({ name: file.name, details: file }))
-        .filter(({ details }) => isFileRecursive || !details.isRecursive) ?? [],
-    ),
+  let files: { name?: string; info: Writable<FileInfo | null>; isRecursive: boolean }[] = $state(
+    [],
   );
 
   $effect(() => {
-    if (info.id === "root" || isFileRecursive === undefined) return;
-    if (lastCategoryId !== info.id) {
-      lastCategoryId = info.id;
-      lastIsFileRecursive = isFileRecursive;
-      return;
-    }
-    if (lastIsFileRecursive === isFileRecursive) return;
+    files =
+      info.files
+        ?.filter(({ isRecursive }) => isFileRecursive || !isRecursive)
+        .map(({ id, isRecursive }) => {
+          const info = getFileInfo(id, $masterKeyStore?.get(1)?.key!);
+          return {
+            name: get(info)?.name,
+            info,
+            isRecursive,
+          };
+        }) ?? [];
 
-    lastIsFileRecursive = isFileRecursive;
-    void updateCategoryInfo(info.id, { isFileRecursive });
+    const sort = () => {
+      sortEntries(files, sortBy);
+    };
+    return untrack(() => {
+      sort();
+
+      const unsubscribes = files.map((file) =>
+        file.info.subscribe((value) => {
+          if (file.name === value?.name) return;
+          file.name = value?.name;
+          sort();
+        }),
+      );
+      return () => unsubscribes.forEach((unsubscribe) => unsubscribe());
+    });
   });
 </script>
 
@@ -75,19 +89,19 @@
           <p class="font-medium">하위 카테고리의 파일</p>
         </CheckBox>
       </div>
-      <RowVirtualizer count={files.length} itemHeight={() => 48} itemGap={4}>
-        {#snippet item(index)}
-          {@const { details } = files[index]!}
-          <File
-            info={details}
-            onclick={onFileClick}
-            onRemoveClick={!details.isRecursive ? onFileRemoveClick : undefined}
-          />
-        {/snippet}
-        {#snippet placeholder()}
-          <p class="text-center text-gray-500">이 카테고리에 추가된 파일이 없어요.</p>
-        {/snippet}
-      </RowVirtualizer>
+      <div class="space-y-1">
+        {#key info}
+          {#each files as { info, isRecursive }}
+            <File
+              {info}
+              onclick={onFileClick}
+              onRemoveClick={!isRecursive ? onFileRemoveClick : undefined}
+            />
+          {:else}
+            <p class="text-gray-500 text-center">이 카테고리에 추가된 파일이 없어요.</p>
+          {/each}
+        {/key}
+      </div>
     </div>
   {/if}
 </div>

src/lib/components/organisms/Category/File.svelte

@@ -1,38 +1,59 @@
 <script lang="ts">
-  import { browser } from "$app/environment";
+  import type { Writable } from "svelte/store";
   import { ActionEntryButton } from "$lib/components/atoms";
   import { DirectoryEntryLabel } from "$lib/components/molecules";
-  import type { CategoryFileInfo } from "$lib/modules/filesystem";
-  import { requestFileThumbnailDownload } from "$lib/services/file";
-  import type { SelectedFile } from "./service";
+  import type { FileInfo } from "$lib/modules/filesystem";
+  import { requestFileThumbnailDownload, type SelectedFile } from "./service";
 
   import IconClose from "~icons/material-symbols/close";
 
   interface Props {
-    info: CategoryFileInfo;
-    onclick: (file: SelectedFile) => void;
-    onRemoveClick?: (file: SelectedFile) => void;
+    info: Writable<FileInfo | null>;
+    onclick: (selectedFile: SelectedFile) => void;
+    onRemoveClick?: (selectedFile: SelectedFile) => void;
   }
 
   let { info, onclick, onRemoveClick }: Props = $props();
 
-  let showThumbnail = $derived(
-    browser && (info.contentType.startsWith("image/") || info.contentType.startsWith("video/")),
-  );
-  let thumbnailPromise = $derived(
-    showThumbnail ? requestFileThumbnailDownload(info.id, info.dataKey?.key) : null,
-  );
+  let thumbnail: string | undefined = $state();
+
+  const openFile = () => {
+    const { id, dataKey, dataKeyVersion, name } = $info as FileInfo;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onclick({ id, dataKey, dataKeyVersion, name });
+  };
+
+  const removeFile = () => {
+    const { id, dataKey, dataKeyVersion, name } = $info as FileInfo;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onRemoveClick!({ id, dataKey, dataKeyVersion, name });
+  };
+
+  $effect(() => {
+    if ($info?.dataKey) {
+      requestFileThumbnailDownload($info.id, $info.dataKey)
+        .then((thumbnailUrl) => {
+          thumbnail = thumbnailUrl ?? undefined;
+        })
+        .catch(() => {
+          // TODO: Error Handling
+          thumbnail = undefined;
+        });
+    } else {
+      thumbnail = undefined;
+    }
+  });
 </script>
 
-<ActionEntryButton
-  class="h-12"
-  onclick={() => onclick(info)}
-  actionButtonIcon={onRemoveClick && IconClose}
-  onActionButtonClick={() => onRemoveClick?.(info)}
->
-  {#await thumbnailPromise}
-    <DirectoryEntryLabel type="file" name={info.name} />
-  {:then thumbnail}
-    <DirectoryEntryLabel type="file" thumbnail={thumbnail ?? undefined} name={info.name} />
-  {/await}
-</ActionEntryButton>
+{#if $info}
+  <ActionEntryButton
+    class="h-12"
+    onclick={openFile}
+    actionButtonIcon={onRemoveClick && IconClose}
+    onActionButtonClick={removeFile}
+  >
+    <DirectoryEntryLabel type="file" {thumbnail} name={$info.name} />
+  </ActionEntryButton>
+{/if}

src/lib/components/organisms/Category/service.ts

@@ -1,4 +1,8 @@
+export { requestFileThumbnailDownload } from "$lib/services/file";
+
 export interface SelectedFile {
   id: number;
+  dataKey: CryptoKey;
+  dataKeyVersion: Date;
   name: string;
 }

src/lib/components/organisms/Gallery.svelte

@@ -1,82 +0,0 @@
-<script lang="ts">
-  import { FileThumbnailButton, RowVirtualizer } from "$lib/components/atoms";
-  import type { SummarizedFileInfo } from "$lib/modules/filesystem";
-  import { formatDate, formatDateSortable, SortBy, sortEntries } from "$lib/utils";
-
-  interface Props {
-    files: SummarizedFileInfo[];
-    onFileClick?: (file: SummarizedFileInfo) => void;
-  }
-
-  let { files, onFileClick }: Props = $props();
-
-  type Row =
-    | { type: "header"; label: string }
-    | { type: "items"; files: SummarizedFileInfo[]; isLast: boolean };
-
-  let rows = $derived.by(() => {
-    const groups = Map.groupBy(
-      files.filter(
-        (file) => file.contentType.startsWith("image/") || file.contentType.startsWith("video/"),
-      ),
-      (file) => formatDateSortable(file.createdAt ?? file.lastModifiedAt),
-    );
-    return Array.from(groups.entries())
-      .sort(([dateA], [dateB]) => dateB.localeCompare(dateA))
-      .flatMap(([_, entries]) => {
-        const sortedEntries = [...entries];
-        sortEntries(sortedEntries, SortBy.DATE_DESC);
-
-        return [
-          {
-            type: "header",
-            label: formatDate(sortedEntries[0]!.createdAt ?? sortedEntries[0]!.lastModifiedAt),
-          },
-          ...Array.from({ length: Math.ceil(sortedEntries.length / 4) }, (_, i) => {
-            const start = i * 4;
-            const end = start + 4;
-            return {
-              type: "items" as const,
-              files: sortedEntries.slice(start, end),
-              isLast: end >= sortedEntries.length,
-            };
-          }),
-        ] satisfies Row[];
-      });
-  });
-</script>
-
-<RowVirtualizer
-  count={rows.length}
-  itemHeight={(index) =>
-    rows[index]!.type === "header"
-      ? 28
-      : Math.ceil(rows[index]!.files.length / 4) * 181 +
-        (Math.ceil(rows[index]!.files.length / 4) - 1) * 4 +
-        16}
-  class="flex flex-grow flex-col"
->
-  {#snippet item(index)}
-    {@const row = rows[index]!}
-    {#if row.type === "header"}
-      <p class="pb-2 text-sm font-medium">{row.label}</p>
-    {:else}
-      <div class={["grid grid-cols-4 gap-x-1", row.isLast ? "pb-4" : "pb-1"]}>
-        {#each row.files as file}
-          <FileThumbnailButton info={file} onclick={onFileClick} />
-        {/each}
-      </div>
-    {/if}
-  {/snippet}
-  {#snippet placeholder()}
-    <div class="flex h-full flex-grow items-center justify-center">
-      <p class="text-gray-500">
-        {#if files.length === 0}
-          업로드된 파일이 없어요.
-        {:else}
-          사진 또는 동영상이 없어요.
-        {/if}
-      </p>
-    </div>
-  {/snippet}
-</RowVirtualizer>

src/lib/components/organisms/index.ts

@@ -1,4 +1,3 @@
 export * from "./Category";
 export { default as Category } from "./Category";
-export { default as Gallery } from "./Gallery.svelte";
 export * from "./modals";

src/lib/hooks/callApi.ts

@@ -0,0 +1,11 @@
+export const callGetApi = async (input: RequestInfo, fetchInternal = fetch) => {
+  return await fetchInternal(input);
+};
+
+export const callPostApi = async <T>(input: RequestInfo, payload?: T, fetchInternal = fetch) => {
+  return await fetchInternal(input, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: payload ? JSON.stringify(payload) : undefined,
+  });
+};

src/lib/hooks/index.ts

@@ -0,0 +1,2 @@
+export * from "./callApi";
+export * from "./gotoStateful";

src/lib/indexedDB/filesystem.ts

@@ -1,5 +1,7 @@
 import { Dexie, type EntityTable } from "dexie";
 
+export type DirectoryId = "root" | number;
+
 interface DirectoryInfo {
   id: number;
   parentId: DirectoryId;
@@ -16,12 +18,13 @@ interface FileInfo {
   categoryIds: number[];
 }
 
+export type CategoryId = "root" | number;
+
 interface CategoryInfo {
   id: number;
   parentId: CategoryId;
   name: string;
   files: { id: number; isRecursive: boolean }[];
-  isFileRecursive: boolean;
 }
 
 const filesystem = new Dexie("filesystem") as Dexie & {
@@ -30,21 +33,11 @@ const filesystem = new Dexie("filesystem") as Dexie & {
   category: EntityTable<CategoryInfo, "id">;
 };
 
-filesystem
-  .version(3)
-  .stores({
-    directory: "id, parentId",
-    file: "id, parentId",
-    category: "id, parentId",
-  })
-  .upgrade(async (trx) => {
-    await trx
-      .table("category")
-      .toCollection()
-      .modify((category) => {
-        category.isFileRecursive = false;
-      });
-  });
+filesystem.version(2).stores({
+  directory: "id, parentId",
+  file: "id, parentId",
+  category: "id, parentId",
+});
 
 export const getDirectoryInfos = async (parentId: DirectoryId) => {
   return await filesystem.directory.where({ parentId }).toArray();
@@ -74,10 +67,6 @@ export const getFileInfo = async (id: number) => {
   return await filesystem.file.get(id);
 };
 
-export const bulkGetFileInfos = async (ids: number[]) => {
-  return await filesystem.file.bulkGet(ids);
-};
-
 export const storeFileInfo = async (fileInfo: FileInfo) => {
   await filesystem.file.put(fileInfo);
 };
@@ -98,10 +87,6 @@ export const storeCategoryInfo = async (categoryInfo: CategoryInfo) => {
   await filesystem.category.put(categoryInfo);
 };
 
-export const updateCategoryInfo = async (id: number, changes: { isFileRecursive?: boolean }) => {
-  await filesystem.category.update(id, changes);
-};
-
 export const deleteCategoryInfo = async (id: number) => {
   await filesystem.category.delete(id);
 };

src/lib/modules/file/download.svelte.ts

@@ -1,95 +0,0 @@
-import axios from "axios";
-import { limitFunction } from "p-limit";
-import { decryptData } from "$lib/modules/crypto";
-
-export interface FileDownloadState {
-  id: number;
-  status:
-    | "download-pending"
-    | "downloading"
-    | "decryption-pending"
-    | "decrypting"
-    | "decrypted"
-    | "canceled"
-    | "error";
-  progress?: number;
-  rate?: number;
-  estimated?: number;
-  result?: ArrayBuffer;
-}
-
-type LiveFileDownloadState = FileDownloadState & {
-  status: "download-pending" | "downloading" | "decryption-pending" | "decrypting";
-};
-
-let downloadingFiles: FileDownloadState[] = $state([]);
-
-export const isFileDownloading = (
-  status: FileDownloadState["status"],
-): status is LiveFileDownloadState["status"] =>
-  ["download-pending", "downloading", "decryption-pending", "decrypting"].includes(status);
-
-export const getFileDownloadState = (fileId: number) => {
-  return downloadingFiles.find((file) => file.id === fileId && isFileDownloading(file.status));
-};
-
-export const getDownloadingFiles = () => {
-  return downloadingFiles.filter((file) => isFileDownloading(file.status));
-};
-
-export const clearDownloadedFiles = () => {
-  downloadingFiles = downloadingFiles.filter((file) => isFileDownloading(file.status));
-};
-
-const requestFileDownload = limitFunction(
-  async (state: FileDownloadState, id: number) => {
-    state.status = "downloading";
-
-    const res = await axios.get(`/api/file/${id}/download`, {
-      responseType: "arraybuffer",
-      onDownloadProgress: ({ progress, rate, estimated }) => {
-        state.progress = progress;
-        state.rate = rate;
-        state.estimated = estimated;
-      },
-    });
-    const fileEncrypted: ArrayBuffer = res.data;
-
-    state.status = "decryption-pending";
-    return fileEncrypted;
-  },
-  { concurrency: 1 },
-);
-
-const decryptFile = limitFunction(
-  async (
-    state: FileDownloadState,
-    fileEncrypted: ArrayBuffer,
-    fileEncryptedIv: string,
-    dataKey: CryptoKey,
-  ) => {
-    state.status = "decrypting";
-
-    const fileBuffer = await decryptData(fileEncrypted, fileEncryptedIv, dataKey);
-
-    state.status = "decrypted";
-    state.result = fileBuffer;
-    return fileBuffer;
-  },
-  { concurrency: 4 },
-);
-
-export const downloadFile = async (id: number, fileEncryptedIv: string, dataKey: CryptoKey) => {
-  downloadingFiles.push({
-    id,
-    status: "download-pending",
-  });
-  const state = downloadingFiles.at(-1)!;
-
-  try {
-    return await decryptFile(state, await requestFileDownload(state, id), fileEncryptedIv, dataKey);
-  } catch (e) {
-    state.status = "error";
-    throw e;
-  }
-};

src/lib/modules/file/download.ts

@@ -0,0 +1,84 @@
+import axios from "axios";
+import { limitFunction } from "p-limit";
+import { writable, type Writable } from "svelte/store";
+import { decryptData } from "$lib/modules/crypto";
+import { fileDownloadStatusStore, type FileDownloadStatus } from "$lib/stores";
+
+const requestFileDownload = limitFunction(
+  async (status: Writable<FileDownloadStatus>, id: number) => {
+    status.update((value) => {
+      value.status = "downloading";
+      return value;
+    });
+
+    const res = await axios.get(`/api/file/${id}/download`, {
+      responseType: "arraybuffer",
+      onDownloadProgress: ({ progress, rate, estimated }) => {
+        status.update((value) => {
+          value.progress = progress;
+          value.rate = rate;
+          value.estimated = estimated;
+          return value;
+        });
+      },
+    });
+    const fileEncrypted: ArrayBuffer = res.data;
+
+    status.update((value) => {
+      value.status = "decryption-pending";
+      return value;
+    });
+    return fileEncrypted;
+  },
+  { concurrency: 1 },
+);
+
+const decryptFile = limitFunction(
+  async (
+    status: Writable<FileDownloadStatus>,
+    fileEncrypted: ArrayBuffer,
+    fileEncryptedIv: string,
+    dataKey: CryptoKey,
+  ) => {
+    status.update((value) => {
+      value.status = "decrypting";
+      return value;
+    });
+
+    const fileBuffer = await decryptData(fileEncrypted, fileEncryptedIv, dataKey);
+
+    status.update((value) => {
+      value.status = "decrypted";
+      value.result = fileBuffer;
+      return value;
+    });
+    return fileBuffer;
+  },
+  { concurrency: 4 },
+);
+
+export const downloadFile = async (id: number, fileEncryptedIv: string, dataKey: CryptoKey) => {
+  const status = writable<FileDownloadStatus>({
+    id,
+    status: "download-pending",
+  });
+  fileDownloadStatusStore.update((value) => {
+    value.push(status);
+    return value;
+  });
+
+  try {
+    return await decryptFile(
+      status,
+      await requestFileDownload(status, id),
+      fileEncryptedIv,
+      dataKey,
+    );
+  } catch (e) {
+    status.update((value) => {
+      value.status = "error";
+      return value;
+    });
+    throw e;
+  }
+};

src/lib/modules/file/index.ts

@@ -1,3 +1,3 @@
 export * from "./cache";
-export * from "./download.svelte";
-export * from "./upload.svelte";
+export * from "./download";
+export * from "./upload";

src/lib/modules/file/upload.ts

@@ -1,6 +1,7 @@
 import axios from "axios";
 import ExifReader from "exifreader";
 import { limitFunction } from "p-limit";
+import { writable, type Writable } from "svelte/store";
 import {
   encodeToBase64,
   generateDataKey,
@@ -12,58 +13,30 @@ import {
 } from "$lib/modules/crypto";
 import { generateThumbnail } from "$lib/modules/thumbnail";
 import type {
+  DuplicateFileScanRequest,
+  DuplicateFileScanResponse,
   FileThumbnailUploadRequest,
   FileUploadRequest,
   FileUploadResponse,
 } from "$lib/server/schemas";
-import type { MasterKey, HmacSecret } from "$lib/stores";
-import { trpc } from "$trpc/client";
-
-export interface FileUploadState {
-  name: string;
-  parentId: DirectoryId;
-  status:
-    | "encryption-pending"
-    | "encrypting"
-    | "upload-pending"
-    | "uploading"
-    | "uploaded"
-    | "canceled"
-    | "error";
-  progress?: number;
-  rate?: number;
-  estimated?: number;
-}
-
-export type LiveFileUploadState = FileUploadState & {
-  status: "encryption-pending" | "encrypting" | "upload-pending" | "uploading";
-};
-
-let uploadingFiles: FileUploadState[] = $state([]);
-
-const isFileUploading = (status: FileUploadState["status"]) =>
-  ["encryption-pending", "encrypting", "upload-pending", "uploading"].includes(status);
-
-export const getUploadingFiles = (parentId?: DirectoryId) => {
-  return uploadingFiles.filter(
-    (file) =>
-      (parentId === undefined || file.parentId === parentId) && isFileUploading(file.status),
-  );
-};
-
-export const clearUploadedFiles = () => {
-  uploadingFiles = uploadingFiles.filter((file) => isFileUploading(file.status));
-};
+import {
+  fileUploadStatusStore,
+  type MasterKey,
+  type HmacSecret,
+  type FileUploadStatus,
+} from "$lib/stores";
 
 const requestDuplicateFileScan = limitFunction(
   async (file: File, hmacSecret: HmacSecret, onDuplicate: () => Promise<boolean>) => {
     const fileBuffer = await file.arrayBuffer();
     const fileSigned = encodeToBase64(await signMessageHmac(fileBuffer, hmacSecret.secret));
 
-    const files = await trpc().file.listByHash.query({
+    const res = await axios.post("/api/file/scanDuplicates", {
       hskVersion: hmacSecret.version,
       contentHmac: fileSigned,
-    });
+    } satisfies DuplicateFileScanRequest);
+    const { files }: DuplicateFileScanResponse = res.data;
+
     if (files.length === 0 || (await onDuplicate())) {
       return { fileBuffer, fileSigned };
     } else {
@@ -106,8 +79,16 @@ const extractExifDateTime = (fileBuffer: ArrayBuffer) => {
 };
 
 const encryptFile = limitFunction(
-  async (state: FileUploadState, file: File, fileBuffer: ArrayBuffer, masterKey: MasterKey) => {
-    state.status = "encrypting";
+  async (
+    status: Writable<FileUploadStatus>,
+    file: File,
+    fileBuffer: ArrayBuffer,
+    masterKey: MasterKey,
+  ) => {
+    status.update((value) => {
+      value.status = "encrypting";
+      return value;
+    });
 
     const fileType = getFileType(file);
 
@@ -131,7 +112,10 @@ const encryptFile = limitFunction(
     const thumbnailBuffer = await thumbnail?.arrayBuffer();
     const thumbnailEncrypted = thumbnailBuffer && (await encryptData(thumbnailBuffer, dataKey));
 
-    state.status = "upload-pending";
+    status.update((value) => {
+      value.status = "upload-pending";
+      return value;
+    });
 
     return {
       dataKeyWrapped,
@@ -149,14 +133,20 @@ const encryptFile = limitFunction(
 );
 
 const requestFileUpload = limitFunction(
-  async (state: FileUploadState, form: FormData, thumbnailForm: FormData | null) => {
-    state.status = "uploading";
+  async (status: Writable<FileUploadStatus>, form: FormData, thumbnailForm: FormData | null) => {
+    status.update((value) => {
+      value.status = "uploading";
+      return value;
+    });
 
     const res = await axios.post("/api/file/upload", form, {
       onUploadProgress: ({ progress, rate, estimated }) => {
-        state.progress = progress;
-        state.rate = rate;
-        state.estimated = estimated;
+        status.update((value) => {
+          value.progress = progress;
+          value.rate = rate;
+          value.estimated = estimated;
+          return value;
+        });
       },
     });
     const { file }: FileUploadResponse = res.data;
@@ -170,7 +160,10 @@ const requestFileUpload = limitFunction(
       }
     }
 
-    state.status = "uploaded";
+    status.update((value) => {
+      value.status = "uploaded";
+      return value;
+    });
 
     return { fileId: file };
   },
@@ -186,12 +179,15 @@ export const uploadFile = async (
 ): Promise<
   { fileId: number; fileBuffer: ArrayBuffer; thumbnailBuffer?: ArrayBuffer } | undefined
 > => {
-  uploadingFiles.push({
+  const status = writable<FileUploadStatus>({
     name: file.name,
     parentId,
     status: "encryption-pending",
   });
-  const state = uploadingFiles.at(-1)!;
+  fileUploadStatusStore.update((value) => {
+    value.push(status);
+    return value;
+  });
 
   try {
     const { fileBuffer, fileSigned } = await requestDuplicateFileScan(
@@ -200,8 +196,14 @@ export const uploadFile = async (
       onDuplicate,
     );
     if (!fileBuffer || !fileSigned) {
-      state.status = "canceled";
-      uploadingFiles = uploadingFiles.filter((file) => file !== state);
+      status.update((value) => {
+        value.status = "canceled";
+        return value;
+      });
+      fileUploadStatusStore.update((value) => {
+        value = value.filter((v) => v !== status);
+        return value;
+      });
       return undefined;
     }
 
@@ -215,7 +217,7 @@ export const uploadFile = async (
       createdAtEncrypted,
       lastModifiedAtEncrypted,
       thumbnail,
-    } = await encryptFile(state, file, fileBuffer, masterKey);
+    } = await encryptFile(status, file, fileBuffer, masterKey);
 
     const form = new FormData();
     form.set(
@@ -253,10 +255,13 @@ export const uploadFile = async (
       thumbnailForm.set("content", new Blob([thumbnail.ciphertext]));
     }
 
-    const { fileId } = await requestFileUpload(state, form, thumbnailForm);
+    const { fileId } = await requestFileUpload(status, form, thumbnailForm);
     return { fileId, fileBuffer, thumbnailBuffer: thumbnail?.plaintext };
   } catch (e) {
-    state.status = "error";
+    status.update((value) => {
+      value.status = "error";
+      return value;
+    });
     throw e;
   }
 };

src/lib/modules/filesystem.ts

@@ -0,0 +1,329 @@
+import { get, writable, type Writable } from "svelte/store";
+import { callGetApi } from "$lib/hooks";
+import {
+  getDirectoryInfos as getDirectoryInfosFromIndexedDB,
+  getDirectoryInfo as getDirectoryInfoFromIndexedDB,
+  storeDirectoryInfo,
+  deleteDirectoryInfo,
+  getFileInfos as getFileInfosFromIndexedDB,
+  getFileInfo as getFileInfoFromIndexedDB,
+  storeFileInfo,
+  deleteFileInfo,
+  getCategoryInfos as getCategoryInfosFromIndexedDB,
+  getCategoryInfo as getCategoryInfoFromIndexedDB,
+  storeCategoryInfo,
+  deleteCategoryInfo,
+  type DirectoryId,
+  type CategoryId,
+} from "$lib/indexedDB";
+import { unwrapDataKey, decryptString } from "$lib/modules/crypto";
+import type {
+  CategoryInfoResponse,
+  CategoryFileListResponse,
+  DirectoryInfoResponse,
+  FileInfoResponse,
+} from "$lib/server/schemas";
+
+export type DirectoryInfo =
+  | {
+      id: "root";
+      dataKey?: undefined;
+      dataKeyVersion?: undefined;
+      name?: undefined;
+      subDirectoryIds: number[];
+      fileIds: number[];
+    }
+  | {
+      id: number;
+      dataKey?: CryptoKey;
+      dataKeyVersion?: Date;
+      name: string;
+      subDirectoryIds: number[];
+      fileIds: number[];
+    };
+
+export interface FileInfo {
+  id: number;
+  dataKey?: CryptoKey;
+  dataKeyVersion?: Date;
+  contentType: string;
+  contentIv?: string;
+  name: string;
+  createdAt?: Date;
+  lastModifiedAt: Date;
+  categoryIds: number[];
+}
+
+export type CategoryInfo =
+  | {
+      id: "root";
+      dataKey?: undefined;
+      dataKeyVersion?: undefined;
+      name?: undefined;
+      subCategoryIds: number[];
+      files?: undefined;
+    }
+  | {
+      id: number;
+      dataKey?: CryptoKey;
+      dataKeyVersion?: Date;
+      name: string;
+      subCategoryIds: number[];
+      files: { id: number; isRecursive: boolean }[];
+    };
+
+const directoryInfoStore = new Map<DirectoryId, Writable<DirectoryInfo | null>>();
+const fileInfoStore = new Map<number, Writable<FileInfo | null>>();
+const categoryInfoStore = new Map<CategoryId, Writable<CategoryInfo | null>>();
+
+const fetchDirectoryInfoFromIndexedDB = async (
+  id: DirectoryId,
+  info: Writable<DirectoryInfo | null>,
+) => {
+  if (get(info)) return;
+
+  const [directory, subDirectories, files] = await Promise.all([
+    id !== "root" ? getDirectoryInfoFromIndexedDB(id) : undefined,
+    getDirectoryInfosFromIndexedDB(id),
+    getFileInfosFromIndexedDB(id),
+  ]);
+  const subDirectoryIds = subDirectories.map(({ id }) => id);
+  const fileIds = files.map(({ id }) => id);
+
+  if (id === "root") {
+    info.set({ id, subDirectoryIds, fileIds });
+  } else {
+    if (!directory) return;
+    info.set({ id, name: directory.name, subDirectoryIds, fileIds });
+  }
+};
+
+const fetchDirectoryInfoFromServer = async (
+  id: DirectoryId,
+  info: Writable<DirectoryInfo | null>,
+  masterKey: CryptoKey,
+) => {
+  const res = await callGetApi(`/api/directory/${id}`);
+  if (res.status === 404) {
+    info.set(null);
+    await deleteDirectoryInfo(id as number);
+    return;
+  } else if (!res.ok) {
+    throw new Error("Failed to fetch directory information");
+  }
+
+  const {
+    metadata,
+    subDirectories: subDirectoryIds,
+    files: fileIds,
+  }: DirectoryInfoResponse = await res.json();
+
+  if (id === "root") {
+    info.set({ id, subDirectoryIds, fileIds });
+  } else {
+    const { dataKey } = await unwrapDataKey(metadata!.dek, masterKey);
+    const name = await decryptString(metadata!.name, metadata!.nameIv, dataKey);
+
+    info.set({
+      id,
+      dataKey,
+      dataKeyVersion: new Date(metadata!.dekVersion),
+      name,
+      subDirectoryIds,
+      fileIds,
+    });
+    await storeDirectoryInfo({ id, parentId: metadata!.parent, name });
+  }
+};
+
+const fetchDirectoryInfo = async (
+  id: DirectoryId,
+  info: Writable<DirectoryInfo | null>,
+  masterKey: CryptoKey,
+) => {
+  await fetchDirectoryInfoFromIndexedDB(id, info);
+  await fetchDirectoryInfoFromServer(id, info, masterKey);
+};
+
+export const getDirectoryInfo = (id: DirectoryId, masterKey: CryptoKey) => {
+  // TODO: MEK rotation
+
+  let info = directoryInfoStore.get(id);
+  if (!info) {
+    info = writable(null);
+    directoryInfoStore.set(id, info);
+  }
+
+  fetchDirectoryInfo(id, info, masterKey); // Intended
+  return info;
+};
+
+const fetchFileInfoFromIndexedDB = async (id: number, info: Writable<FileInfo | null>) => {
+  if (get(info)) return;
+
+  const file = await getFileInfoFromIndexedDB(id);
+  if (!file) return;
+
+  info.set(file);
+};
+
+const decryptDate = async (ciphertext: string, iv: string, dataKey: CryptoKey) => {
+  return new Date(parseInt(await decryptString(ciphertext, iv, dataKey), 10));
+};
+
+const fetchFileInfoFromServer = async (
+  id: number,
+  info: Writable<FileInfo | null>,
+  masterKey: CryptoKey,
+) => {
+  const res = await callGetApi(`/api/file/${id}`);
+  if (res.status === 404) {
+    info.set(null);
+    await deleteFileInfo(id);
+    return;
+  } else if (!res.ok) {
+    throw new Error("Failed to fetch file information");
+  }
+
+  const metadata: FileInfoResponse = await res.json();
+  const { dataKey } = await unwrapDataKey(metadata.dek, masterKey);
+
+  const name = await decryptString(metadata.name, metadata.nameIv, dataKey);
+  const createdAt =
+    metadata.createdAt && metadata.createdAtIv
+      ? await decryptDate(metadata.createdAt, metadata.createdAtIv, dataKey)
+      : undefined;
+  const lastModifiedAt = await decryptDate(
+    metadata.lastModifiedAt,
+    metadata.lastModifiedAtIv,
+    dataKey,
+  );
+
+  info.set({
+    id,
+    dataKey,
+    dataKeyVersion: new Date(metadata.dekVersion),
+    contentType: metadata.contentType,
+    contentIv: metadata.contentIv,
+    name,
+    createdAt,
+    lastModifiedAt,
+    categoryIds: metadata.categories,
+  });
+  await storeFileInfo({
+    id,
+    parentId: metadata.parent,
+    name,
+    contentType: metadata.contentType,
+    createdAt,
+    lastModifiedAt,
+    categoryIds: metadata.categories,
+  });
+};
+
+const fetchFileInfo = async (id: number, info: Writable<FileInfo | null>, masterKey: CryptoKey) => {
+  await fetchFileInfoFromIndexedDB(id, info);
+  await fetchFileInfoFromServer(id, info, masterKey);
+};
+
+export const getFileInfo = (fileId: number, masterKey: CryptoKey) => {
+  // TODO: MEK rotation
+
+  let info = fileInfoStore.get(fileId);
+  if (!info) {
+    info = writable(null);
+    fileInfoStore.set(fileId, info);
+  }
+
+  fetchFileInfo(fileId, info, masterKey); // Intended
+  return info;
+};
+
+const fetchCategoryInfoFromIndexedDB = async (
+  id: CategoryId,
+  info: Writable<CategoryInfo | null>,
+) => {
+  if (get(info)) return;
+
+  const [category, subCategories] = await Promise.all([
+    id !== "root" ? getCategoryInfoFromIndexedDB(id) : undefined,
+    getCategoryInfosFromIndexedDB(id),
+  ]);
+  const subCategoryIds = subCategories.map(({ id }) => id);
+
+  if (id === "root") {
+    info.set({ id, subCategoryIds });
+  } else {
+    if (!category) return;
+    info.set({ id, name: category.name, subCategoryIds, files: category.files });
+  }
+};
+
+const fetchCategoryInfoFromServer = async (
+  id: CategoryId,
+  info: Writable<CategoryInfo | null>,
+  masterKey: CryptoKey,
+) => {
+  let res = await callGetApi(`/api/category/${id}`);
+  if (res.status === 404) {
+    info.set(null);
+    await deleteCategoryInfo(id as number);
+    return;
+  } else if (!res.ok) {
+    throw new Error("Failed to fetch category information");
+  }
+
+  const { metadata, subCategories }: CategoryInfoResponse = await res.json();
+
+  if (id === "root") {
+    info.set({ id, subCategoryIds: subCategories });
+  } else {
+    const { dataKey } = await unwrapDataKey(metadata!.dek, masterKey);
+    const name = await decryptString(metadata!.name, metadata!.nameIv, dataKey);
+
+    res = await callGetApi(`/api/category/${id}/file/list?recurse=true`);
+    if (!res.ok) {
+      throw new Error("Failed to fetch category files");
+    }
+
+    const { files }: CategoryFileListResponse = await res.json();
+    const filesMapped = files.map(({ file, isRecursive }) => ({ id: file, isRecursive }));
+
+    info.set({
+      id,
+      dataKey,
+      dataKeyVersion: new Date(metadata!.dekVersion),
+      name,
+      subCategoryIds: subCategories,
+      files: filesMapped,
+    });
+    await storeCategoryInfo({
+      id,
+      parentId: metadata!.parent,
+      name,
+      files: filesMapped,
+    });
+  }
+};
+
+const fetchCategoryInfo = async (
+  id: CategoryId,
+  info: Writable<CategoryInfo | null>,
+  masterKey: CryptoKey,
+) => {
+  await fetchCategoryInfoFromIndexedDB(id, info);
+  await fetchCategoryInfoFromServer(id, info, masterKey);
+};
+
+export const getCategoryInfo = (categoryId: CategoryId, masterKey: CryptoKey) => {
+  // TODO: MEK rotation
+
+  let info = categoryInfoStore.get(categoryId);
+  if (!info) {
+    info = writable(null);
+    categoryInfoStore.set(categoryId, info);
+  }
+
+  fetchCategoryInfo(categoryId, info, masterKey); // Intended
+  return info;
+};

src/lib/modules/filesystem/category.ts

@@ -1,164 +0,0 @@
-import * as IndexedDB from "$lib/indexedDB";
-import { trpc, isTRPCClientError } from "$trpc/client";
-import { FilesystemCache, decryptFileMetadata, decryptCategoryMetadata } from "./internal.svelte";
-import type { MaybeCategoryInfo } from "./types";
-
-const cache = new FilesystemCache<CategoryId, MaybeCategoryInfo, Partial<MaybeCategoryInfo>>();
-
-const fetchFromIndexedDB = async (id: CategoryId) => {
-  const [category, subCategories] = await Promise.all([
-    id !== "root" ? IndexedDB.getCategoryInfo(id) : undefined,
-    IndexedDB.getCategoryInfos(id),
-  ]);
-  const files = category
-    ? await Promise.all(
-        category.files.map(async (file) => {
-          const fileInfo = await IndexedDB.getFileInfo(file.id);
-          return fileInfo
-            ? {
-                id: file.id,
-                contentType: fileInfo.contentType,
-                name: fileInfo.name,
-                createdAt: fileInfo.createdAt,
-                lastModifiedAt: fileInfo.lastModifiedAt,
-                isRecursive: file.isRecursive,
-              }
-            : undefined;
-        }),
-      )
-    : undefined;
-
-  if (id === "root") {
-    return {
-      id,
-      exists: true as const,
-      subCategories,
-    };
-  } else if (category) {
-    return {
-      id,
-      exists: true as const,
-      name: category.name,
-      subCategories,
-      files: files!.filter((file) => !!file),
-      isFileRecursive: category.isFileRecursive,
-    };
-  }
-};
-
-const fetchFromServer = async (id: CategoryId, masterKey: CryptoKey) => {
-  try {
-    const {
-      metadata,
-      subCategories: subCategoriesRaw,
-      files: filesRaw,
-    } = await trpc().category.get.query({ id, recurse: true });
-    const subCategories = await Promise.all(
-      subCategoriesRaw.map(async (category) => {
-        const decrypted = await decryptCategoryMetadata(category, masterKey);
-        const existing = await IndexedDB.getCategoryInfo(category.id);
-        await IndexedDB.storeCategoryInfo({
-          id: category.id,
-          parentId: id,
-          name: decrypted.name,
-          files: existing?.files ?? [],
-          isFileRecursive: existing?.isFileRecursive ?? false,
-        });
-        return {
-          id: category.id,
-          ...decrypted,
-        };
-      }),
-    );
-
-    const existingFiles = filesRaw
-      ? await IndexedDB.bulkGetFileInfos(filesRaw.map((file) => file.id))
-      : [];
-    const files = filesRaw
-      ? await Promise.all(
-          filesRaw.map(async (file, index) => {
-            const decrypted = await decryptFileMetadata(file, masterKey);
-            const existing = existingFiles[index];
-            if (existing) {
-              const categoryIds = file.isRecursive
-                ? existing.categoryIds
-                : Array.from(new Set([...existing.categoryIds, id as number]));
-              await IndexedDB.storeFileInfo({
-                id: file.id,
-                parentId: existing.parentId,
-                contentType: file.contentType,
-                name: decrypted.name,
-                createdAt: decrypted.createdAt,
-                lastModifiedAt: decrypted.lastModifiedAt,
-                categoryIds,
-              });
-            }
-            return {
-              id: file.id,
-              contentType: file.contentType,
-              isRecursive: file.isRecursive,
-              ...decrypted,
-            };
-          }),
-        )
-      : undefined;
-
-    const decryptedMetadata = metadata
-      ? await decryptCategoryMetadata(metadata, masterKey)
-      : undefined;
-    if (id !== "root" && metadata && decryptedMetadata) {
-      const existingCategory = await IndexedDB.getCategoryInfo(id);
-      await IndexedDB.storeCategoryInfo({
-        id: id as number,
-        parentId: metadata.parent,
-        name: decryptedMetadata.name,
-        files:
-          files?.map((file) => ({
-            id: file.id,
-            isRecursive: file.isRecursive,
-          })) ??
-          existingCategory?.files ??
-          [],
-        isFileRecursive: existingCategory?.isFileRecursive ?? false,
-      });
-    }
-
-    if (id === "root") {
-      return {
-        id,
-        exists: true as const,
-        subCategories,
-      };
-    } else {
-      return {
-        id,
-        exists: true as const,
-        subCategories,
-        files,
-        ...decryptedMetadata!,
-      };
-    }
-  } catch (e) {
-    if (isTRPCClientError(e) && e.data?.code === "NOT_FOUND") {
-      await IndexedDB.deleteCategoryInfo(id as number);
-      return { id, exists: false as const };
-    }
-    throw e;
-  }
-};
-
-export const getCategoryInfo = async (id: CategoryId, masterKey: CryptoKey) => {
-  return await cache.get(id, async (isInitial, resolve) => {
-    if (isInitial) {
-      const info = await fetchFromIndexedDB(id);
-      if (info) {
-        resolve(info);
-      }
-    }
-
-    const info = await fetchFromServer(id, masterKey);
-    if (info) {
-      resolve(info);
-    }
-  });
-};

src/lib/modules/filesystem/directory.ts

@@ -1,121 +0,0 @@
-import * as IndexedDB from "$lib/indexedDB";
-import { monotonicResolve } from "$lib/utils";
-import { trpc, isTRPCClientError } from "$trpc/client";
-import { FilesystemCache, decryptDirectoryMetadata, decryptFileMetadata } from "./internal.svelte";
-import type { MaybeDirectoryInfo } from "./types";
-
-const cache = new FilesystemCache<DirectoryId, MaybeDirectoryInfo>();
-
-const fetchFromIndexedDB = async (id: DirectoryId) => {
-  const [directory, subDirectories, files] = await Promise.all([
-    id !== "root" ? IndexedDB.getDirectoryInfo(id) : undefined,
-    IndexedDB.getDirectoryInfos(id),
-    IndexedDB.getFileInfos(id),
-  ]);
-
-  if (id === "root") {
-    return {
-      id,
-      exists: true as const,
-      subDirectories,
-      files,
-    };
-  } else if (directory) {
-    return {
-      id,
-      exists: true as const,
-      parentId: directory.parentId,
-      name: directory.name,
-      subDirectories,
-      files,
-    };
-  }
-};
-
-const fetchFromServer = async (id: DirectoryId, masterKey: CryptoKey) => {
-  try {
-    const {
-      metadata,
-      subDirectories: subDirectoriesRaw,
-      files: filesRaw,
-    } = await trpc().directory.get.query({ id });
-    const existingFiles = await IndexedDB.bulkGetFileInfos(filesRaw.map((file) => file.id));
-    const [subDirectories, files, decryptedMetadata] = await Promise.all([
-      Promise.all(
-        subDirectoriesRaw.map(async (directory) => {
-          const decrypted = await decryptDirectoryMetadata(directory, masterKey);
-          await IndexedDB.storeDirectoryInfo({
-            id: directory.id,
-            parentId: id,
-            name: decrypted.name,
-          });
-          return {
-            id: directory.id,
-            ...decrypted,
-          };
-        }),
-      ),
-      Promise.all(
-        filesRaw.map(async (file, index) => {
-          const decrypted = await decryptFileMetadata(file, masterKey);
-          await IndexedDB.storeFileInfo({
-            id: file.id,
-            parentId: id,
-            contentType: file.contentType,
-            name: decrypted.name,
-            createdAt: decrypted.createdAt,
-            lastModifiedAt: decrypted.lastModifiedAt,
-            categoryIds: existingFiles[index]?.categoryIds ?? [],
-          });
-          return {
-            id: file.id,
-            contentType: file.contentType,
-            ...decrypted,
-          };
-        }),
-      ),
-      metadata ? decryptDirectoryMetadata(metadata, masterKey) : undefined,
-    ]);
-
-    if (id !== "root" && metadata && decryptedMetadata) {
-      await IndexedDB.storeDirectoryInfo({
-        id,
-        parentId: metadata.parent,
-        name: decryptedMetadata.name,
-      });
-    }
-
-    if (id === "root") {
-      return {
-        id,
-        exists: true as const,
-        subDirectories,
-        files,
-      };
-    } else {
-      return {
-        id,
-        exists: true as const,
-        parentId: metadata!.parent,
-        subDirectories,
-        files,
-        ...decryptedMetadata!,
-      };
-    }
-  } catch (e) {
-    if (isTRPCClientError(e) && e.data?.code === "NOT_FOUND") {
-      await IndexedDB.deleteDirectoryInfo(id as number);
-      return { id, exists: false as const };
-    }
-    throw e;
-  }
-};
-
-export const getDirectoryInfo = async (id: DirectoryId, masterKey: CryptoKey) => {
-  return await cache.get(id, (isInitial, resolve) =>
-    monotonicResolve(
-      [isInitial && fetchFromIndexedDB(id), fetchFromServer(id, masterKey)],
-      resolve,
-    ),
-  );
-};

src/lib/modules/filesystem/file.ts

@@ -1,175 +0,0 @@
-import * as IndexedDB from "$lib/indexedDB";
-import { monotonicResolve } from "$lib/utils";
-import { trpc, isTRPCClientError } from "$trpc/client";
-import { FilesystemCache, decryptFileMetadata, decryptCategoryMetadata } from "./internal.svelte";
-import type { MaybeFileInfo } from "./types";
-
-const cache = new FilesystemCache<number, MaybeFileInfo>();
-
-const fetchFromIndexedDB = async (id: number) => {
-  const file = await IndexedDB.getFileInfo(id);
-  const categories = file
-    ? await Promise.all(
-        file.categoryIds.map(async (categoryId) => {
-          const category = await IndexedDB.getCategoryInfo(categoryId);
-          return category ? { id: category.id, name: category.name } : undefined;
-        }),
-      )
-    : undefined;
-
-  if (file) {
-    return {
-      id,
-      exists: true as const,
-      parentId: file.parentId,
-      contentType: file.contentType,
-      name: file.name,
-      createdAt: file.createdAt,
-      lastModifiedAt: file.lastModifiedAt,
-      categories: categories!.filter((category) => !!category),
-    };
-  }
-};
-
-const bulkFetchFromIndexedDB = async (ids: number[]) => {
-  const files = await IndexedDB.bulkGetFileInfos(ids);
-  const categories = await Promise.all(
-    files.map(async (file) =>
-      file
-        ? await Promise.all(
-            file.categoryIds.map(async (categoryId) => {
-              const category = await IndexedDB.getCategoryInfo(categoryId);
-              return category ? { id: category.id, name: category.name } : undefined;
-            }),
-          )
-        : undefined,
-    ),
-  );
-  return new Map(
-    files
-      .map((file, index) =>
-        file
-          ? ([
-              file.id,
-              {
-                ...file,
-                exists: true,
-                categories: categories[index]!.filter((category) => !!category),
-              },
-            ] as const)
-          : undefined,
-      )
-      .filter((file) => !!file),
-  );
-};
-
-const fetchFromServer = async (id: number, masterKey: CryptoKey) => {
-  try {
-    const { categories: categoriesRaw, ...metadata } = await trpc().file.get.query({ id });
-    const [categories, decryptedMetadata] = await Promise.all([
-      Promise.all(
-        categoriesRaw.map(async (category) => ({
-          id: category.id,
-          ...(await decryptCategoryMetadata(category, masterKey)),
-        })),
-      ),
-      decryptFileMetadata(metadata, masterKey),
-    ]);
-
-    await IndexedDB.storeFileInfo({
-      id,
-      parentId: metadata.parent,
-      contentType: metadata.contentType,
-      name: decryptedMetadata.name,
-      createdAt: decryptedMetadata.createdAt,
-      lastModifiedAt: decryptedMetadata.lastModifiedAt,
-      categoryIds: categories.map((category) => category.id),
-    });
-
-    return {
-      id,
-      exists: true as const,
-      parentId: metadata.parent,
-      contentType: metadata.contentType,
-      contentIv: metadata.contentIv,
-      categories,
-      ...decryptedMetadata,
-    };
-  } catch (e) {
-    if (isTRPCClientError(e) && e.data?.code === "NOT_FOUND") {
-      await IndexedDB.deleteFileInfo(id);
-      return { id, exists: false as const };
-    }
-    throw e;
-  }
-};
-
-const bulkFetchFromServer = async (ids: number[], masterKey: CryptoKey) => {
-  const filesRaw = await trpc().file.bulkGet.query({ ids });
-  const files = await Promise.all(
-    filesRaw.map(async (file) => {
-      const [categories, decryptedMetadata] = await Promise.all([
-        Promise.all(
-          file.categories.map(async (category) => ({
-            id: category.id,
-            ...(await decryptCategoryMetadata(category, masterKey)),
-          })),
-        ),
-        decryptFileMetadata(file, masterKey),
-      ]);
-
-      await IndexedDB.storeFileInfo({
-        id: file.id,
-        parentId: file.parent,
-        contentType: file.contentType,
-        name: decryptedMetadata.name,
-        createdAt: decryptedMetadata.createdAt,
-        lastModifiedAt: decryptedMetadata.lastModifiedAt,
-        categoryIds: categories.map((category) => category.id),
-      });
-      return {
-        id: file.id,
-        exists: true as const,
-        parentId: file.parent,
-        contentType: file.contentType,
-        contentIv: file.contentIv,
-        categories,
-        ...decryptedMetadata,
-      };
-    }),
-  );
-
-  const existingIds = new Set(filesRaw.map(({ id }) => id));
-  return new Map<number, MaybeFileInfo>([
-    ...files.map((file) => [file.id, file] as const),
-    ...ids.filter((id) => !existingIds.has(id)).map((id) => [id, { id, exists: false }] as const),
-  ]);
-};
-
-export const getFileInfo = async (id: number, masterKey: CryptoKey) => {
-  return await cache.get(id, (isInitial, resolve) =>
-    monotonicResolve(
-      [isInitial && fetchFromIndexedDB(id), fetchFromServer(id, masterKey)],
-      resolve,
-    ),
-  );
-};
-
-export const bulkGetFileInfo = async (ids: number[], masterKey: CryptoKey) => {
-  return await cache.bulkGet(new Set(ids), (keys, resolve) =>
-    monotonicResolve(
-      [
-        bulkFetchFromIndexedDB(
-          Array.from(
-            keys
-              .entries()
-              .filter(([, isInitial]) => isInitial)
-              .map(([key]) => key),
-          ),
-        ),
-        bulkFetchFromServer(Array.from(keys.keys()), masterKey),
-      ],
-      resolve,
-    ),
-  );
-};

src/lib/modules/filesystem/index.ts

@@ -1,4 +0,0 @@
-export * from "./category";
-export * from "./directory";
-export * from "./file";
-export * from "./types";

src/lib/modules/filesystem/internal.svelte.ts

@@ -1,130 +0,0 @@
-import { unwrapDataKey, decryptString } from "$lib/modules/crypto";
-
-export class FilesystemCache<K, V extends RV, RV = V> {
-  private map = new Map<K, V | Promise<V>>();
-
-  get(key: K, loader: (isInitial: boolean, resolve: (value: RV | undefined) => void) => void) {
-    const info = this.map.get(key);
-    if (info instanceof Promise) {
-      return info;
-    }
-
-    const { promise, resolve } = Promise.withResolvers<V>();
-    if (!info) {
-      this.map.set(key, promise);
-    }
-
-    loader(!info, (loadedInfo) => {
-      if (!loadedInfo) return;
-
-      const info = this.map.get(key)!;
-      if (info instanceof Promise) {
-        const state = $state(loadedInfo);
-        this.map.set(key, state as V);
-        resolve(state as V);
-      } else {
-        Object.assign(info, loadedInfo);
-        resolve(info);
-      }
-    });
-
-    return info ?? promise;
-  }
-
-  async bulkGet(
-    keys: Set<K>,
-    loader: (keys: Map<K, boolean>, resolve: (values: Map<K, RV>) => void) => void,
-  ) {
-    const states = new Map<K, V>();
-    const promises = new Map<K, Promise<V>>();
-    const resolvers = new Map<K, (value: V) => void>();
-
-    keys.forEach((key) => {
-      const info = this.map.get(key);
-      if (info instanceof Promise) {
-        promises.set(key, info);
-      } else if (info) {
-        states.set(key, info);
-      } else {
-        const { promise, resolve } = Promise.withResolvers<V>();
-        this.map.set(key, promise);
-        promises.set(key, promise);
-        resolvers.set(key, resolve);
-      }
-    });
-
-    loader(
-      new Map([
-        ...states.keys().map((key) => [key, false] as const),
-        ...resolvers.keys().map((key) => [key, true] as const),
-      ]),
-      (loadedInfos) =>
-        loadedInfos.forEach((loadedInfo, key) => {
-          const info = this.map.get(key)!;
-          const resolve = resolvers.get(key);
-          if (info instanceof Promise) {
-            const state = $state(loadedInfo);
-            this.map.set(key, state as V);
-            resolve?.(state as V);
-          } else {
-            Object.assign(info, loadedInfo);
-            resolve?.(info);
-          }
-        }),
-    );
-
-    const newStates = await Promise.all(
-      promises.entries().map(async ([key, promise]) => [key, await promise] as const),
-    );
-    return new Map([...states, ...newStates]);
-  }
-}
-
-export const decryptDirectoryMetadata = async (
-  metadata: { dek: string; dekVersion: Date; name: string; nameIv: string },
-  masterKey: CryptoKey,
-) => {
-  const { dataKey } = await unwrapDataKey(metadata.dek, masterKey);
-  const name = await decryptString(metadata.name, metadata.nameIv, dataKey);
-
-  return {
-    dataKey: { key: dataKey, version: metadata.dekVersion },
-    name,
-  };
-};
-
-const decryptDate = async (ciphertext: string, iv: string, dataKey: CryptoKey) => {
-  return new Date(parseInt(await decryptString(ciphertext, iv, dataKey), 10));
-};
-
-export const decryptFileMetadata = async (
-  metadata: {
-    dek: string;
-    dekVersion: Date;
-    name: string;
-    nameIv: string;
-    createdAt?: string;
-    createdAtIv?: string;
-    lastModifiedAt: string;
-    lastModifiedAtIv: string;
-  },
-  masterKey: CryptoKey,
-) => {
-  const { dataKey } = await unwrapDataKey(metadata.dek, masterKey);
-  const [name, createdAt, lastModifiedAt] = await Promise.all([
-    decryptString(metadata.name, metadata.nameIv, dataKey),
-    metadata.createdAt
-      ? decryptDate(metadata.createdAt, metadata.createdAtIv!, dataKey)
-      : undefined,
-    decryptDate(metadata.lastModifiedAt, metadata.lastModifiedAtIv, dataKey),
-  ]);
-
-  return {
-    dataKey: { key: dataKey, version: metadata.dekVersion },
-    name,
-    createdAt,
-    lastModifiedAt,
-  };
-};
-
-export const decryptCategoryMetadata = decryptDirectoryMetadata;

src/lib/modules/filesystem/types.ts

@@ -1,71 +0,0 @@
-export type DataKey = { key: CryptoKey; version: Date };
-type AllUndefined<T> = { [K in keyof T]?: undefined };
-
-interface LocalDirectoryInfo {
-  id: number;
-  parentId: DirectoryId;
-  dataKey?: DataKey;
-  name: string;
-  subDirectories: SubDirectoryInfo[];
-  files: SummarizedFileInfo[];
-}
-
-interface RootDirectoryInfo {
-  id: "root";
-  parentId?: undefined;
-  dataKey?: undefined;
-  name?: undefined;
-  subDirectories: SubDirectoryInfo[];
-  files: SummarizedFileInfo[];
-}
-
-export type DirectoryInfo = LocalDirectoryInfo | RootDirectoryInfo;
-export type SubDirectoryInfo = Omit<LocalDirectoryInfo, "parentId" | "subDirectories" | "files">;
-export type MaybeDirectoryInfo =
-  | (DirectoryInfo & { exists: true })
-  | ({ id: DirectoryId; exists: false } & AllUndefined<Omit<DirectoryInfo, "id">>);
-
-export interface FileInfo {
-  id: number;
-  parentId: DirectoryId;
-  dataKey?: DataKey;
-  contentType: string;
-  contentIv?: string;
-  name: string;
-  createdAt?: Date;
-  lastModifiedAt: Date;
-  categories: { id: number; name: string }[];
-}
-
-export type SummarizedFileInfo = Omit<FileInfo, "parentId" | "contentIv" | "categories">;
-export type CategoryFileInfo = SummarizedFileInfo & { isRecursive: boolean };
-export type MaybeFileInfo =
-  | (FileInfo & { exists: true })
-  | ({ id: number; exists: false } & AllUndefined<Omit<FileInfo, "id">>);
-
-interface LocalCategoryInfo {
-  id: number;
-  dataKey?: DataKey;
-  name: string;
-  subCategories: SubCategoryInfo[];
-  files: CategoryFileInfo[];
-  isFileRecursive: boolean;
-}
-
-interface RootCategoryInfo {
-  id: "root";
-  dataKey?: undefined;
-  name?: undefined;
-  subCategories: SubCategoryInfo[];
-  files?: undefined;
-  isFileRecursive?: undefined;
-}
-
-export type CategoryInfo = LocalCategoryInfo | RootCategoryInfo;
-export type SubCategoryInfo = Omit<
-  LocalCategoryInfo,
-  "subCategories" | "files" | "isFileRecursive"
->;
-export type MaybeCategoryInfo =
-  | (CategoryInfo & { exists: true })
-  | ({ id: CategoryId; exists: false } & AllUndefined<Omit<CategoryInfo, "id">>);

src/lib/modules/key.ts

@@ -5,14 +5,14 @@ import type { ClientKeys } from "$lib/stores";
 const serializedClientKeysSchema = z.intersection(
   z.object({
     generator: z.literal("ArkVault"),
-    exportedAt: z.iso.datetime(),
+    exportedAt: z.string().datetime(),
   }),
   z.object({
     version: z.literal(1),
-    encryptKey: z.base64().nonempty(),
-    decryptKey: z.base64().nonempty(),
-    signKey: z.base64().nonempty(),
-    verifyKey: z.base64().nonempty(),
+    encryptKey: z.string().base64().nonempty(),
+    decryptKey: z.string().base64().nonempty(),
+    signKey: z.string().base64().nonempty(),
+    verifyKey: z.string().base64().nonempty(),
   }),
 );
 

src/lib/modules/thumbnail.ts

@@ -32,7 +32,7 @@ const capture = (
 
     drawer(context, scaledWidth, scaledHeight);
     canvas.toBlob((blob) => {
-      if (blob && blob.type === "image/webp") {
+      if (blob) {
         resolve(blob);
       } else {
         reject(new Error("Failed to generate thumbnail"));
@@ -67,15 +67,10 @@ const generateVideoThumbnail = (videoUrl: string, time = 0) => {
   return new Promise<Blob>((resolve, reject) => {
     const video = document.createElement("video");
     video.onloadedmetadata = () => {
-      if (video.videoWidth === 0 || video.videoHeight === 0) {
-        return reject();
-      }
-
-      const callbackId = video.requestVideoFrameCallback(() => {
-        captureVideoThumbnail(video).then(resolve).catch(reject);
-        video.cancelVideoFrameCallback(callbackId);
-      });
       video.currentTime = Math.min(time, video.duration);
+      video.requestVideoFrameCallback(() => {
+        captureVideoThumbnail(video).then(resolve).catch(reject);
+      });
     };
     video.onerror = reject;
 
@@ -88,26 +83,18 @@ const generateVideoThumbnail = (videoUrl: string, time = 0) => {
 export const generateThumbnail = async (fileBuffer: ArrayBuffer, fileType: string) => {
   let url;
   try {
-    if (fileType.startsWith("image/")) {
-      const fileBlob = new Blob([fileBuffer], { type: fileType });
-      url = URL.createObjectURL(fileBlob);
-
-      try {
-        return await generateImageThumbnail(url);
-      } catch {
-        URL.revokeObjectURL(url);
-        url = undefined;
-
-        if (fileType === "image/heic") {
-          const { default: heic2any } = await import("heic2any");
-          url = URL.createObjectURL(
-            (await heic2any({ blob: fileBlob, toType: "image/png" })) as Blob,
-          );
-          return await generateImageThumbnail(url);
-        } else {
-          return null;
-        }
-      }
+    if (fileType === "image/heic") {
+      const { default: heic2any } = await import("heic2any");
+      url = URL.createObjectURL(
+        (await heic2any({
+          blob: new Blob([fileBuffer], { type: fileType }),
+          toType: "image/png",
+        })) as Blob,
+      );
+      return await generateImageThumbnail(url);
+    } else if (fileType.startsWith("image/")) {
+      url = URL.createObjectURL(new Blob([fileBuffer], { type: fileType }));
+      return await generateImageThumbnail(url);
     } else if (fileType.startsWith("video/")) {
       url = URL.createObjectURL(new Blob([fileBuffer], { type: fileType }));
       return await generateVideoThumbnail(url);

src/lib/modules/util.ts

@@ -7,13 +7,6 @@ export const formatDate = (date: Date) => {
   return `${year}. ${month}. ${day}.`;
 };
 
-export const formatDateSortable = (date: Date) => {
-  const year = date.getFullYear();
-  const month = pad2(date.getMonth() + 1);
-  const day = pad2(date.getDate());
-  return `${year}${month}${day}`;
-};
-
 export const formatDateTime = (date: Date) => {
   const dateFormatted = formatDate(date);
   const hours = date.getHours();
@@ -39,3 +32,32 @@ export const truncateString = (str: string, maxLength = 20) => {
   if (str.length <= maxLength) return str;
   return `${str.slice(0, maxLength)}...`;
 };
+
+export enum SortBy {
+  NAME_ASC,
+  NAME_DESC,
+}
+
+type SortFunc = (a?: string, b?: string) => number;
+
+const collator = new Intl.Collator(undefined, { numeric: true, sensitivity: "base" });
+
+const sortByNameAsc: SortFunc = (a, b) => {
+  if (a && b) return collator.compare(a, b);
+  if (a) return -1;
+  if (b) return 1;
+  return 0;
+};
+
+const sortByNameDesc: SortFunc = (a, b) => -sortByNameAsc(a, b);
+
+export const sortEntries = <T extends { name?: string }>(entries: T[], sortBy: SortBy) => {
+  let sortFunc: SortFunc;
+  if (sortBy === SortBy.NAME_ASC) {
+    sortFunc = sortByNameAsc;
+  } else {
+    sortFunc = sortByNameDesc;
+  }
+
+  entries.sort((a, b) => sortFunc(a.name, b.name));
+};

src/lib/server/db/category.ts

@@ -2,6 +2,8 @@ import { IntegrityError } from "./error";
 import db from "./kysely";
 import type { Ciphertext } from "./schema";
 
+export type CategoryId = "root" | number;
+
 interface Category {
   id: number;
   parentId: CategoryId;

src/lib/server/db/client.ts

@@ -98,6 +98,22 @@ export const createUserClient = async (userId: number, clientId: number) => {
   }
 };
 
+export const getAllUserClients = async (userId: number) => {
+  const userClients = await db
+    .selectFrom("user_client")
+    .selectAll()
+    .where("user_id", "=", userId)
+    .execute();
+  return userClients.map(
+    ({ user_id, client_id, state }) =>
+      ({
+        userId: user_id,
+        clientId: client_id,
+        state,
+      }) satisfies UserClient,
+  );
+};
+
 export const getUserClient = async (userId: number, clientId: number) => {
   const userClient = await db
     .selectFrom("user_client")

src/lib/server/db/file.ts

@@ -1,10 +1,11 @@
-import { sql } from "kysely";
-import { jsonArrayFrom } from "kysely/helpers/postgres";
+import { sql, type NotNull } from "kysely";
 import pg from "pg";
 import { IntegrityError } from "./error";
 import db from "./kysely";
 import type { Ciphertext } from "./schema";
 
+export type DirectoryId = "root" | number;
+
 interface Directory {
   id: number;
   parentId: DirectoryId;
@@ -37,14 +38,6 @@ interface File {
 
 export type NewFile = Omit<File, "id">;
 
-interface FileCategory {
-  id: number;
-  mekVersion: number;
-  encDek: string;
-  dekVersion: Date;
-  encName: Ciphertext;
-}
-
 export const registerDirectory = async (params: NewDirectory) => {
   await db.transaction().execute(async (trx) => {
     const mek = await trx
@@ -313,51 +306,39 @@ export const getAllFilesByCategory = async (
   recurse: boolean,
 ) => {
   const files = await db
-    .withRecursive("category_tree", (db) =>
+    .withRecursive("cte", (db) =>
       db
         .selectFrom("category")
-        .select(["id", sql<number>`0`.as("depth")])
+        .leftJoin("file_category", "category.id", "file_category.category_id")
+        .select(["id", "parent_id", "user_id", "file_category.file_id"])
+        .select(sql<number>`0`.as("depth"))
         .where("id", "=", categoryId)
-        .where("user_id", "=", userId)
         .$if(recurse, (qb) =>
           qb.unionAll((db) =>
             db
               .selectFrom("category")
-              .innerJoin("category_tree", "category.parent_id", "category_tree.id")
-              .select(["category.id", sql<number>`depth + 1`.as("depth")]),
+              .leftJoin("file_category", "category.id", "file_category.category_id")
+              .innerJoin("cte", "category.parent_id", "cte.id")
+              .select([
+                "category.id",
+                "category.parent_id",
+                "category.user_id",
+                "file_category.file_id",
+              ])
+              .select(sql<number>`cte.depth + 1`.as("depth")),
           ),
         ),
     )
-    .selectFrom("category_tree")
-    .innerJoin("file_category", "category_tree.id", "file_category.category_id")
-    .innerJoin("file", "file_category.file_id", "file.id")
+    .selectFrom("cte")
     .select(["file_id", "depth"])
-    .selectAll("file")
     .distinctOn("file_id")
+    .where("user_id", "=", userId)
+    .where("file_id", "is not", null)
+    .$narrowType<{ file_id: NotNull }>()
     .orderBy("file_id")
     .orderBy("depth")
     .execute();
-  return files.map(
-    (file) =>
-      ({
-        id: file.file_id,
-        parentId: file.parent_id ?? "root",
-        userId: file.user_id,
-        path: file.path,
-        mekVersion: file.master_encryption_key_version,
-        encDek: file.encrypted_data_encryption_key,
-        dekVersion: file.data_encryption_key_version,
-        hskVersion: file.hmac_secret_key_version,
-        contentHmac: file.content_hmac,
-        contentType: file.content_type,
-        encContentIv: file.encrypted_content_iv,
-        encContentHash: file.encrypted_content_hash,
-        encName: file.encrypted_name,
-        encCreatedAt: file.encrypted_created_at,
-        encLastModifiedAt: file.encrypted_last_modified_at,
-        isRecursive: file.depth > 0,
-      }) satisfies File & { isRecursive: boolean },
-  );
+  return files.map(({ file_id, depth }) => ({ id: file_id, isRecursive: depth > 0 }));
 };
 
 export const getAllFileIds = async (userId: number) => {
@@ -409,51 +390,6 @@ export const getFile = async (userId: number, fileId: number) => {
     : null;
 };
 
-export const getFilesWithCategories = async (userId: number, fileIds: number[]) => {
-  const files = await db
-    .selectFrom("file")
-    .selectAll()
-    .select((eb) =>
-      jsonArrayFrom(
-        eb
-          .selectFrom("file_category")
-          .innerJoin("category", "file_category.category_id", "category.id")
-          .where("file_category.file_id", "=", eb.ref("file.id"))
-          .selectAll("category"),
-      ).as("categories"),
-    )
-    .where("id", "=", (eb) => eb.fn.any(eb.val(fileIds)))
-    .where("user_id", "=", userId)
-    .execute();
-  return files.map(
-    (file) =>
-      ({
-        id: file.id,
-        parentId: file.parent_id ?? "root",
-        userId: file.user_id,
-        path: file.path,
-        mekVersion: file.master_encryption_key_version,
-        encDek: file.encrypted_data_encryption_key,
-        dekVersion: file.data_encryption_key_version,
-        hskVersion: file.hmac_secret_key_version,
-        contentHmac: file.content_hmac,
-        contentType: file.content_type,
-        encContentIv: file.encrypted_content_iv,
-        encContentHash: file.encrypted_content_hash,
-        encName: file.encrypted_name,
-        encCreatedAt: file.encrypted_created_at,
-        encLastModifiedAt: file.encrypted_last_modified_at,
-        categories: file.categories.map((category) => ({
-          id: category.id,
-          mekVersion: category.master_encryption_key_version,
-          encDek: category.encrypted_data_encryption_key,
-          dekVersion: new Date(category.data_encryption_key_version),
-          encName: category.encrypted_name,
-        })),
-      }) satisfies File & { categories: FileCategory[] },
-  );
-};
-
 export const setFileEncName = async (
   userId: number,
   fileId: number,
@@ -540,20 +476,10 @@ export const addFileToCategory = async (fileId: number, categoryId: number) => {
 export const getAllFileCategories = async (fileId: number) => {
   const categories = await db
     .selectFrom("file_category")
-    .innerJoin("category", "file_category.category_id", "category.id")
-    .selectAll("category")
+    .select("category_id")
     .where("file_id", "=", fileId)
     .execute();
-  return categories.map(
-    (category) =>
-      ({
-        id: category.id,
-        mekVersion: category.master_encryption_key_version,
-        encDek: category.encrypted_data_encryption_key,
-        dekVersion: category.data_encryption_key_version,
-        encName: category.encrypted_name,
-      }) satisfies FileCategory,
-  );
+  return categories.map(({ category_id }) => ({ id: category_id }));
 };
 
 export const removeFileFromCategory = async (fileId: number, categoryId: number) => {

src/lib/server/db/index.ts

@@ -1,10 +0,0 @@
-export * as CategoryRepo from "./category";
-export * as ClientRepo from "./client";
-export * as FileRepo from "./file";
-export * as HskRepo from "./hsk";
-export * as MediaRepo from "./media";
-export * as MekRepo from "./mek";
-export * as SessionRepo from "./session";
-export * as UserRepo from "./user";
-
-export * from "./error";

src/lib/server/db/mek.ts

@@ -60,6 +60,19 @@ export const registerInitialMek = async (
   });
 };
 
+export const getInitialMek = async (userId: number) => {
+  const mek = await db
+    .selectFrom("master_encryption_key")
+    .selectAll()
+    .where("user_id", "=", userId)
+    .where("version", "=", 1)
+    .limit(1)
+    .executeTakeFirst();
+  return mek
+    ? ({ userId: mek.user_id, version: mek.version, state: mek.state } satisfies Mek)
+    : null;
+};
+
 export const getAllValidClientMeks = async (userId: number, clientId: number) => {
   const clientMeks = await db
     .selectFrom("client_master_encryption_key")

src/lib/server/db/user.ts

@@ -27,6 +27,10 @@ export const getUserByEmail = async (email: string) => {
   return user ? (user satisfies User) : null;
 };
 
+export const setUserNickname = async (userId: number, nickname: string) => {
+  await db.updateTable("user").set({ nickname }).where("id", "=", userId).execute();
+};
+
 export const setUserPassword = async (userId: number, password: string) => {
   await db.updateTable("user").set({ password }).where("id", "=", userId).execute();
 };

src/lib/server/middlewares/authenticate.ts

@@ -1,7 +1,13 @@
 import { error, redirect, type Handle } from "@sveltejs/kit";
-import { cookieOptions, authenticate, AuthenticationError } from "$lib/server/modules/auth";
+import env from "$lib/server/loadenv";
+import { authenticate, AuthenticationError } from "$lib/server/modules/auth";
 
 export const authenticateMiddleware: Handle = async ({ event, resolve }) => {
+  const { pathname, search } = event.url;
+  if (pathname === "/api/auth/login") {
+    return await resolve(event);
+  }
+
   try {
     const sessionIdSigned = event.cookies.get("sessionId");
     if (!sessionIdSigned) {
@@ -10,11 +16,15 @@ export const authenticateMiddleware: Handle = async ({ event, resolve }) => {
 
     const { ip, userAgent } = event.locals;
     event.locals.session = await authenticate(sessionIdSigned, ip, userAgent);
-    event.cookies.set("sessionId", sessionIdSigned, cookieOptions);
+    event.cookies.set("sessionId", sessionIdSigned, {
+      path: "/",
+      maxAge: env.session.exp / 1000,
+      secure: true,
+      sameSite: "strict",
+    });
   } catch (e) {
     if (e instanceof AuthenticationError) {
-      const { pathname, search } = event.url;
-      if (pathname === "/auth/login" || pathname.startsWith("/api/trpc")) {
+      if (pathname === "/auth/login") {
         return await resolve(event);
       } else if (pathname.startsWith("/api")) {
         error(e.status, e.message);

src/lib/server/modules/auth.ts

@@ -1,25 +1,20 @@
 import { error } from "@sveltejs/kit";
-import { ClientRepo, SessionRepo, IntegrityError } from "$lib/server/db";
+import { getUserClient } from "$lib/server/db/client";
+import { IntegrityError } from "$lib/server/db/error";
+import { createSession, refreshSession } from "$lib/server/db/session";
 import env from "$lib/server/loadenv";
-import { verifySessionId } from "$lib/server/modules/crypto";
+import { issueSessionId, verifySessionId } from "$lib/server/modules/crypto";
 
-export interface Session {
+interface Session {
   sessionId: string;
   userId: number;
   clientId?: number;
 }
 
-export interface ClientSession extends Session {
+interface ClientSession extends Session {
   clientId: number;
 }
 
-export type SessionPermission =
-  | "any"
-  | "notClient"
-  | "anyClient"
-  | "pendingClient"
-  | "activeClient";
-
 export class AuthenticationError extends Error {
   constructor(
     public status: 400 | 401,
@@ -30,22 +25,11 @@ export class AuthenticationError extends Error {
   }
 }
 
-export class AuthorizationError extends Error {
-  constructor(
-    public status: 403 | 500,
-    message: string,
-  ) {
-    super(message);
-    this.name = "AuthorizationError";
-  }
-}
-
-export const cookieOptions = {
-  path: "/",
-  maxAge: env.session.exp / 1000,
-  secure: true,
-  sameSite: "strict",
-} as const;
+export const startSession = async (userId: number, ip: string, userAgent: string) => {
+  const { sessionId, sessionIdSigned } = await issueSessionId(32, env.session.secret);
+  await createSession(userId, sessionId, ip, userAgent);
+  return sessionIdSigned;
+};
 
 export const authenticate = async (sessionIdSigned: string, ip: string, userAgent: string) => {
   const sessionId = verifySessionId(sessionIdSigned, env.session.secret);
@@ -54,7 +38,7 @@ export const authenticate = async (sessionIdSigned: string, ip: string, userAgen
   }
 
   try {
-    const { userId, clientId } = await SessionRepo.refreshSession(sessionId, ip, userAgent);
+    const { userId, clientId } = await refreshSession(sessionId, ip, userAgent);
     return {
       id: sessionId,
       userId,
@@ -68,12 +52,34 @@ export const authenticate = async (sessionIdSigned: string, ip: string, userAgen
   }
 };
 
-export const authorizeInternal = async (
+export async function authorize(locals: App.Locals, requiredPermission: "any"): Promise<Session>;
+
+export async function authorize(
   locals: App.Locals,
-  requiredPermission: SessionPermission,
-): Promise<Session> => {
+  requiredPermission: "notClient",
+): Promise<Session>;
+
+export async function authorize(
+  locals: App.Locals,
+  requiredPermission: "anyClient",
+): Promise<ClientSession>;
+
+export async function authorize(
+  locals: App.Locals,
+  requiredPermission: "pendingClient",
+): Promise<ClientSession>;
+
+export async function authorize(
+  locals: App.Locals,
+  requiredPermission: "activeClient",
+): Promise<ClientSession>;
+
+export async function authorize(
+  locals: App.Locals,
+  requiredPermission: "any" | "notClient" | "anyClient" | "pendingClient" | "activeClient",
+): Promise<Session> {
   if (!locals.session) {
-    throw new AuthorizationError(500, "Unauthenticated");
+    error(500, "Unauthenticated");
   }
 
   const { id: sessionId, userId, clientId } = locals.session;
@@ -83,63 +89,39 @@ export const authorizeInternal = async (
       break;
     case "notClient":
       if (clientId) {
-        throw new AuthorizationError(403, "Forbidden");
+        error(403, "Forbidden");
       }
       break;
     case "anyClient":
       if (!clientId) {
-        throw new AuthorizationError(403, "Forbidden");
+        error(403, "Forbidden");
       }
       break;
     case "pendingClient": {
       if (!clientId) {
-        throw new AuthorizationError(403, "Forbidden");
+        error(403, "Forbidden");
       }
-      const userClient = await ClientRepo.getUserClient(userId, clientId);
+      const userClient = await getUserClient(userId, clientId);
       if (!userClient) {
-        throw new AuthorizationError(500, "Invalid session id");
+        error(500, "Invalid session id");
       } else if (userClient.state !== "pending") {
-        throw new AuthorizationError(403, "Forbidden");
+        error(403, "Forbidden");
       }
       break;
     }
     case "activeClient": {
       if (!clientId) {
-        throw new AuthorizationError(403, "Forbidden");
+        error(403, "Forbidden");
       }
-      const userClient = await ClientRepo.getUserClient(userId, clientId);
+      const userClient = await getUserClient(userId, clientId);
       if (!userClient) {
-        throw new AuthorizationError(500, "Invalid session id");
+        error(500, "Invalid session id");
       } else if (userClient.state !== "active") {
-        throw new AuthorizationError(403, "Forbidden");
+        error(403, "Forbidden");
       }
       break;
     }
   }
 
   return { sessionId, userId, clientId };
-};
-
-export async function authorize(
-  locals: App.Locals,
-  requiredPermission: "any" | "notClient",
-): Promise<Session>;
-
-export async function authorize(
-  locals: App.Locals,
-  requiredPermission: "anyClient" | "pendingClient" | "activeClient",
-): Promise<ClientSession>;
-
-export async function authorize(
-  locals: App.Locals,
-  requiredPermission: SessionPermission,
-): Promise<Session> {
-  try {
-    return await authorizeInternal(locals, requiredPermission);
-  } catch (e) {
-    if (e instanceof AuthorizationError) {
-      error(e.status, e.message);
-    }
-    throw e;
-  }
 }

src/lib/server/modules/filesystem.ts

@@ -1,7 +0,0 @@
-import { unlink } from "fs/promises";
-
-export const safeUnlink = async (path: string | null | undefined) => {
-  if (path) {
-    await unlink(path).catch(console.error);
-  }
-};

src/lib/server/modules/mek.ts

@@ -0,0 +1,25 @@
+import { error } from "@sveltejs/kit";
+import { getUserClientWithDetails } from "$lib/server/db/client";
+import { getInitialMek } from "$lib/server/db/mek";
+import { verifySignature } from "$lib/server/modules/crypto";
+
+export const isInitialMekNeeded = async (userId: number) => {
+  const initialMek = await getInitialMek(userId);
+  return !initialMek;
+};
+
+export const verifyClientEncMekSig = async (
+  userId: number,
+  clientId: number,
+  version: number,
+  encMek: string,
+  encMekSig: string,
+) => {
+  const userClient = await getUserClientWithDetails(userId, clientId);
+  if (!userClient) {
+    error(500, "Invalid session id");
+  }
+
+  const data = JSON.stringify({ version, key: encMek });
+  return verifySignature(Buffer.from(data), encMekSig, userClient.sigPubKey);
+};

src/lib/server/schemas/auth.ts

@@ -0,0 +1,32 @@
+import { z } from "zod";
+
+export const passwordChangeRequest = z.object({
+  oldPassword: z.string().trim().nonempty(),
+  newPassword: z.string().trim().nonempty(),
+});
+export type PasswordChangeRequest = z.input<typeof passwordChangeRequest>;
+
+export const loginRequest = z.object({
+  email: z.string().email(),
+  password: z.string().trim().nonempty(),
+});
+export type LoginRequest = z.input<typeof loginRequest>;
+
+export const sessionUpgradeRequest = z.object({
+  encPubKey: z.string().base64().nonempty(),
+  sigPubKey: z.string().base64().nonempty(),
+});
+export type SessionUpgradeRequest = z.input<typeof sessionUpgradeRequest>;
+
+export const sessionUpgradeResponse = z.object({
+  id: z.number().int().positive(),
+  challenge: z.string().base64().nonempty(),
+});
+export type SessionUpgradeResponse = z.output<typeof sessionUpgradeResponse>;
+
+export const sessionUpgradeVerifyRequest = z.object({
+  id: z.number().int().positive(),
+  answerSig: z.string().base64().nonempty(),
+  force: z.boolean().default(false),
+});
+export type SessionUpgradeVerifyRequest = z.input<typeof sessionUpgradeVerifyRequest>;

src/lib/server/schemas/category.ts

@@ -1,3 +1,55 @@
 import { z } from "zod";
 
-export const categoryIdSchema = z.union([z.literal("root"), z.int().positive()]);
+export const categoryIdSchema = z.union([z.literal("root"), z.number().int().positive()]);
+
+export const categoryInfoResponse = z.object({
+  metadata: z
+    .object({
+      parent: categoryIdSchema,
+      mekVersion: z.number().int().positive(),
+      dek: z.string().base64().nonempty(),
+      dekVersion: z.string().datetime(),
+      name: z.string().base64().nonempty(),
+      nameIv: z.string().base64().nonempty(),
+    })
+    .optional(),
+  subCategories: z.number().int().positive().array(),
+});
+export type CategoryInfoResponse = z.output<typeof categoryInfoResponse>;
+
+export const categoryFileAddRequest = z.object({
+  file: z.number().int().positive(),
+});
+export type CategoryFileAddRequest = z.input<typeof categoryFileAddRequest>;
+
+export const categoryFileListResponse = z.object({
+  files: z.array(
+    z.object({
+      file: z.number().int().positive(),
+      isRecursive: z.boolean(),
+    }),
+  ),
+});
+export type CategoryFileListResponse = z.output<typeof categoryFileListResponse>;
+
+export const categoryFileRemoveRequest = z.object({
+  file: z.number().int().positive(),
+});
+export type CategoryFileRemoveRequest = z.input<typeof categoryFileRemoveRequest>;
+
+export const categoryRenameRequest = z.object({
+  dekVersion: z.string().datetime(),
+  name: z.string().base64().nonempty(),
+  nameIv: z.string().base64().nonempty(),
+});
+export type CategoryRenameRequest = z.input<typeof categoryRenameRequest>;
+
+export const categoryCreateRequest = z.object({
+  parent: categoryIdSchema,
+  mekVersion: z.number().int().positive(),
+  dek: z.string().base64().nonempty(),
+  dekVersion: z.string().datetime(),
+  name: z.string().base64().nonempty(),
+  nameIv: z.string().base64().nonempty(),
+});
+export type CategoryCreateRequest = z.input<typeof categoryCreateRequest>;

src/lib/server/schemas/client.ts

@@ -0,0 +1,36 @@
+import { z } from "zod";
+
+export const clientListResponse = z.object({
+  clients: z.array(
+    z.object({
+      id: z.number().int().positive(),
+      state: z.enum(["pending", "active"]),
+    }),
+  ),
+});
+export type ClientListResponse = z.output<typeof clientListResponse>;
+
+export const clientRegisterRequest = z.object({
+  encPubKey: z.string().base64().nonempty(),
+  sigPubKey: z.string().base64().nonempty(),
+});
+export type ClientRegisterRequest = z.input<typeof clientRegisterRequest>;
+
+export const clientRegisterResponse = z.object({
+  id: z.number().int().positive(),
+  challenge: z.string().base64().nonempty(),
+});
+export type ClientRegisterResponse = z.output<typeof clientRegisterResponse>;
+
+export const clientRegisterVerifyRequest = z.object({
+  id: z.number().int().positive(),
+  answerSig: z.string().base64().nonempty(),
+});
+export type ClientRegisterVerifyRequest = z.input<typeof clientRegisterVerifyRequest>;
+
+export const clientStatusResponse = z.object({
+  id: z.number().int().positive(),
+  state: z.enum(["pending", "active"]),
+  isInitialMekNeeded: z.boolean(),
+});
+export type ClientStatusResponse = z.output<typeof clientStatusResponse>;

src/lib/server/schemas/directory.ts

@@ -1,3 +1,41 @@
 import { z } from "zod";
 
-export const directoryIdSchema = z.union([z.literal("root"), z.int().positive()]);
+export const directoryIdSchema = z.union([z.literal("root"), z.number().int().positive()]);
+
+export const directoryInfoResponse = z.object({
+  metadata: z
+    .object({
+      parent: directoryIdSchema,
+      mekVersion: z.number().int().positive(),
+      dek: z.string().base64().nonempty(),
+      dekVersion: z.string().datetime(),
+      name: z.string().base64().nonempty(),
+      nameIv: z.string().base64().nonempty(),
+    })
+    .optional(),
+  subDirectories: z.number().int().positive().array(),
+  files: z.number().int().positive().array(),
+});
+export type DirectoryInfoResponse = z.output<typeof directoryInfoResponse>;
+
+export const directoryDeleteResponse = z.object({
+  deletedFiles: z.number().int().positive().array(),
+});
+export type DirectoryDeleteResponse = z.output<typeof directoryDeleteResponse>;
+
+export const directoryRenameRequest = z.object({
+  dekVersion: z.string().datetime(),
+  name: z.string().base64().nonempty(),
+  nameIv: z.string().base64().nonempty(),
+});
+export type DirectoryRenameRequest = z.input<typeof directoryRenameRequest>;
+
+export const directoryCreateRequest = z.object({
+  parent: directoryIdSchema,
+  mekVersion: z.number().int().positive(),
+  dek: z.string().base64().nonempty(),
+  dekVersion: z.string().datetime(),
+  name: z.string().base64().nonempty(),
+  nameIv: z.string().base64().nonempty(),
+});
+export type DirectoryCreateRequest = z.input<typeof directoryCreateRequest>;

src/lib/server/schemas/file.ts

@@ -2,35 +2,90 @@ import mime from "mime";
 import { z } from "zod";
 import { directoryIdSchema } from "./directory";
 
-export const fileThumbnailUploadRequest = z.object({
-  dekVersion: z.iso.datetime(),
-  contentIv: z.base64().nonempty(),
-});
-export type FileThumbnailUploadRequest = z.input<typeof fileThumbnailUploadRequest>;
-
-export const fileUploadRequest = z.object({
+export const fileInfoResponse = z.object({
   parent: directoryIdSchema,
-  mekVersion: z.int().positive(),
-  dek: z.base64().nonempty(),
-  dekVersion: z.iso.datetime(),
-  hskVersion: z.int().positive(),
-  contentHmac: z.base64().nonempty(),
+  mekVersion: z.number().int().positive(),
+  dek: z.string().base64().nonempty(),
+  dekVersion: z.string().datetime(),
   contentType: z
     .string()
     .trim()
     .nonempty()
     .refine((value) => mime.getExtension(value) !== null), // MIME type
-  contentIv: z.base64().nonempty(),
-  name: z.base64().nonempty(),
-  nameIv: z.base64().nonempty(),
-  createdAt: z.base64().nonempty().optional(),
-  createdAtIv: z.base64().nonempty().optional(),
-  lastModifiedAt: z.base64().nonempty(),
-  lastModifiedAtIv: z.base64().nonempty(),
+  contentIv: z.string().base64().nonempty(),
+  name: z.string().base64().nonempty(),
+  nameIv: z.string().base64().nonempty(),
+  createdAt: z.string().base64().nonempty().optional(),
+  createdAtIv: z.string().base64().nonempty().optional(),
+  lastModifiedAt: z.string().base64().nonempty(),
+  lastModifiedAtIv: z.string().base64().nonempty(),
+  categories: z.number().int().positive().array(),
+});
+export type FileInfoResponse = z.output<typeof fileInfoResponse>;
+
+export const fileRenameRequest = z.object({
+  dekVersion: z.string().datetime(),
+  name: z.string().base64().nonempty(),
+  nameIv: z.string().base64().nonempty(),
+});
+export type FileRenameRequest = z.input<typeof fileRenameRequest>;
+
+export const fileThumbnailInfoResponse = z.object({
+  updatedAt: z.string().datetime(),
+  contentIv: z.string().base64().nonempty(),
+});
+export type FileThumbnailInfoResponse = z.output<typeof fileThumbnailInfoResponse>;
+
+export const fileThumbnailUploadRequest = z.object({
+  dekVersion: z.string().datetime(),
+  contentIv: z.string().base64().nonempty(),
+});
+export type FileThumbnailUploadRequest = z.input<typeof fileThumbnailUploadRequest>;
+
+export const fileListResponse = z.object({
+  files: z.number().int().positive().array(),
+});
+export type FileListResponse = z.output<typeof fileListResponse>;
+
+export const duplicateFileScanRequest = z.object({
+  hskVersion: z.number().int().positive(),
+  contentHmac: z.string().base64().nonempty(),
+});
+export type DuplicateFileScanRequest = z.input<typeof duplicateFileScanRequest>;
+
+export const duplicateFileScanResponse = z.object({
+  files: z.number().int().positive().array(),
+});
+export type DuplicateFileScanResponse = z.output<typeof duplicateFileScanResponse>;
+
+export const missingThumbnailFileScanResponse = z.object({
+  files: z.number().int().positive().array(),
+});
+export type MissingThumbnailFileScanResponse = z.output<typeof missingThumbnailFileScanResponse>;
+
+export const fileUploadRequest = z.object({
+  parent: directoryIdSchema,
+  mekVersion: z.number().int().positive(),
+  dek: z.string().base64().nonempty(),
+  dekVersion: z.string().datetime(),
+  hskVersion: z.number().int().positive(),
+  contentHmac: z.string().base64().nonempty(),
+  contentType: z
+    .string()
+    .trim()
+    .nonempty()
+    .refine((value) => mime.getExtension(value) !== null), // MIME type
+  contentIv: z.string().base64().nonempty(),
+  name: z.string().base64().nonempty(),
+  nameIv: z.string().base64().nonempty(),
+  createdAt: z.string().base64().nonempty().optional(),
+  createdAtIv: z.string().base64().nonempty().optional(),
+  lastModifiedAt: z.string().base64().nonempty(),
+  lastModifiedAtIv: z.string().base64().nonempty(),
 });
 export type FileUploadRequest = z.input<typeof fileUploadRequest>;
 
 export const fileUploadResponse = z.object({
-  file: z.int().positive(),
+  file: z.number().int().positive(),
 });
 export type FileUploadResponse = z.output<typeof fileUploadResponse>;

src/lib/server/schemas/hsk.ts

@@ -0,0 +1,19 @@
+import { z } from "zod";
+
+export const hmacSecretListResponse = z.object({
+  hsks: z.array(
+    z.object({
+      version: z.number().int().positive(),
+      state: z.enum(["active"]),
+      mekVersion: z.number().int().positive(),
+      hsk: z.string().base64().nonempty(),
+    }),
+  ),
+});
+export type HmacSecretListResponse = z.output<typeof hmacSecretListResponse>;
+
+export const initialHmacSecretRegisterRequest = z.object({
+  mekVersion: z.number().int().positive(),
+  hsk: z.string().base64().nonempty(),
+});
+export type InitialHmacSecretRegisterRequest = z.input<typeof initialHmacSecretRegisterRequest>;

src/lib/server/schemas/index.ts

@@ -1,3 +1,8 @@
+export * from "./auth";
 export * from "./category";
+export * from "./client";
 export * from "./directory";
 export * from "./file";
+export * from "./hsk";
+export * from "./mek";
+export * from "./user";

src/lib/server/schemas/mek.ts

@@ -0,0 +1,19 @@
+import { z } from "zod";
+
+export const masterKeyListResponse = z.object({
+  meks: z.array(
+    z.object({
+      version: z.number().int().positive(),
+      state: z.enum(["active", "retired"]),
+      mek: z.string().base64().nonempty(),
+      mekSig: z.string().base64().nonempty(),
+    }),
+  ),
+});
+export type MasterKeyListResponse = z.output<typeof masterKeyListResponse>;
+
+export const initialMasterKeyRegisterRequest = z.object({
+  mek: z.string().base64().nonempty(),
+  mekSig: z.string().base64().nonempty(),
+});
+export type InitialMasterKeyRegisterRequest = z.input<typeof initialMasterKeyRegisterRequest>;

src/lib/server/schemas/user.ts

@@ -0,0 +1,12 @@
+import { z } from "zod";
+
+export const userInfoResponse = z.object({
+  email: z.string().email(),
+  nickname: z.string().nonempty(),
+});
+export type UserInfoResponse = z.output<typeof userInfoResponse>;
+
+export const nicknameChangeRequest = z.object({
+  newNickname: z.string().trim().min(2).max(8),
+});
+export type NicknameChangeRequest = z.input<typeof nicknameChangeRequest>;

src/lib/server/services/auth.ts

@@ -0,0 +1,122 @@
+import { error } from "@sveltejs/kit";
+import argon2 from "argon2";
+import { getClient, getClientByPubKeys, getUserClient } from "$lib/server/db/client";
+import { IntegrityError } from "$lib/server/db/error";
+import {
+  upgradeSession,
+  deleteSession,
+  deleteAllOtherSessions,
+  registerSessionUpgradeChallenge,
+  consumeSessionUpgradeChallenge,
+} from "$lib/server/db/session";
+import { getUser, getUserByEmail, setUserPassword } from "$lib/server/db/user";
+import env from "$lib/server/loadenv";
+import { startSession } from "$lib/server/modules/auth";
+import { verifySignature, generateChallenge } from "$lib/server/modules/crypto";
+
+const hashPassword = async (password: string) => {
+  return await argon2.hash(password);
+};
+
+const verifyPassword = async (hash: string, password: string) => {
+  return await argon2.verify(hash, password);
+};
+
+export const changePassword = async (
+  userId: number,
+  sessionId: string,
+  oldPassword: string,
+  newPassword: string,
+) => {
+  if (oldPassword === newPassword) {
+    error(400, "Same passwords");
+  } else if (newPassword.length < 8) {
+    error(400, "Too short password");
+  }
+
+  const user = await getUser(userId);
+  if (!user) {
+    error(500, "Invalid session id");
+  } else if (!(await verifyPassword(user.password, oldPassword))) {
+    error(403, "Invalid password");
+  }
+
+  await setUserPassword(userId, await hashPassword(newPassword));
+  await deleteAllOtherSessions(userId, sessionId);
+};
+
+export const login = async (email: string, password: string, ip: string, userAgent: string) => {
+  const user = await getUserByEmail(email);
+  if (!user || !(await verifyPassword(user.password, password))) {
+    error(401, "Invalid email or password");
+  }
+
+  return { sessionIdSigned: await startSession(user.id, ip, userAgent) };
+};
+
+export const logout = async (sessionId: string) => {
+  await deleteSession(sessionId);
+};
+
+export const createSessionUpgradeChallenge = async (
+  sessionId: string,
+  userId: number,
+  ip: string,
+  encPubKey: string,
+  sigPubKey: string,
+) => {
+  const client = await getClientByPubKeys(encPubKey, sigPubKey);
+  const userClient = client ? await getUserClient(userId, client.id) : undefined;
+  if (!client) {
+    error(401, "Invalid public key(s)");
+  } else if (!userClient || userClient.state === "challenging") {
+    error(403, "Unregistered client");
+  }
+
+  const { answer, challenge } = await generateChallenge(32, encPubKey);
+  const { id } = await registerSessionUpgradeChallenge(
+    sessionId,
+    client.id,
+    answer.toString("base64"),
+    ip,
+    new Date(Date.now() + env.challenge.sessionUpgradeExp),
+  );
+
+  return { id, challenge: challenge.toString("base64") };
+};
+
+export const verifySessionUpgradeChallenge = async (
+  sessionId: string,
+  userId: number,
+  ip: string,
+  challengeId: number,
+  answerSig: string,
+  force: boolean,
+) => {
+  const challenge = await consumeSessionUpgradeChallenge(challengeId, sessionId, ip);
+  if (!challenge) {
+    error(403, "Invalid challenge answer");
+  }
+
+  const client = await getClient(challenge.clientId);
+  if (!client) {
+    error(500, "Invalid challenge answer");
+  } else if (
+    !verifySignature(Buffer.from(challenge.answer, "base64"), answerSig, client.sigPubKey)
+  ) {
+    error(403, "Invalid challenge answer signature");
+  }
+
+  try {
+    await upgradeSession(userId, sessionId, client.id, force);
+  } catch (e) {
+    if (e instanceof IntegrityError) {
+      if (e.message === "Session not found") {
+        error(500, "Invalid challenge answer");
+      } else if (!force && e.message === "Session already exists") {
+        error(409, "Already logged in");
+      }
+    }
+    throw e;
+  }
+};

src/lib/server/services/category.ts

@@ -0,0 +1,133 @@
+import { error } from "@sveltejs/kit";
+import {
+  registerCategory,
+  getAllCategoriesByParent,
+  getCategory,
+  setCategoryEncName,
+  unregisterCategory,
+  type CategoryId,
+  type NewCategory,
+} from "$lib/server/db/category";
+import { IntegrityError } from "$lib/server/db/error";
+import {
+  getAllFilesByCategory,
+  getFile,
+  addFileToCategory,
+  removeFileFromCategory,
+} from "$lib/server/db/file";
+import type { Ciphertext } from "$lib/server/db/schema";
+
+export const getCategoryInformation = async (userId: number, categoryId: CategoryId) => {
+  const category = categoryId !== "root" ? await getCategory(userId, categoryId) : undefined;
+  if (category === null) {
+    error(404, "Invalid category id");
+  }
+
+  const categories = await getAllCategoriesByParent(userId, categoryId);
+  return {
+    metadata: category && {
+      parentId: category.parentId ?? ("root" as const),
+      mekVersion: category.mekVersion,
+      encDek: category.encDek,
+      dekVersion: category.dekVersion,
+      encName: category.encName,
+    },
+    categories: categories.map(({ id }) => id),
+  };
+};
+
+export const deleteCategory = async (userId: number, categoryId: number) => {
+  try {
+    await unregisterCategory(userId, categoryId);
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "Category not found") {
+      error(404, "Invalid category id");
+    }
+    throw e;
+  }
+};
+
+export const addCategoryFile = async (userId: number, categoryId: number, fileId: number) => {
+  const category = await getCategory(userId, categoryId);
+  const file = await getFile(userId, fileId);
+  if (!category) {
+    error(404, "Invalid category id");
+  } else if (!file) {
+    error(404, "Invalid file id");
+  }
+
+  try {
+    await addFileToCategory(fileId, categoryId);
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "File already added to category") {
+      error(400, "File already added");
+    }
+    throw e;
+  }
+};
+
+export const getCategoryFiles = async (userId: number, categoryId: number, recurse: boolean) => {
+  const category = await getCategory(userId, categoryId);
+  if (!category) {
+    error(404, "Invalid category id");
+  }
+
+  const files = await getAllFilesByCategory(userId, categoryId, recurse);
+  return { files };
+};
+
+export const removeCategoryFile = async (userId: number, categoryId: number, fileId: number) => {
+  const category = await getCategory(userId, categoryId);
+  const file = await getFile(userId, fileId);
+  if (!category) {
+    error(404, "Invalid category id");
+  } else if (!file) {
+    error(404, "Invalid file id");
+  }
+
+  try {
+    await removeFileFromCategory(fileId, categoryId);
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "File not found in category") {
+      error(400, "File not added");
+    }
+    throw e;
+  }
+};
+
+export const renameCategory = async (
+  userId: number,
+  categoryId: number,
+  dekVersion: Date,
+  newEncName: Ciphertext,
+) => {
+  try {
+    await setCategoryEncName(userId, categoryId, dekVersion, newEncName);
+  } catch (e) {
+    if (e instanceof IntegrityError) {
+      if (e.message === "Category not found") {
+        error(404, "Invalid category id");
+      } else if (e.message === "Invalid DEK version") {
+        error(400, "Invalid DEK version");
+      }
+    }
+    throw e;
+  }
+};
+
+export const createCategory = async (params: NewCategory) => {
+  const oneMinuteAgo = new Date(Date.now() - 60 * 1000);
+  const oneMinuteLater = new Date(Date.now() + 60 * 1000);
+  if (params.dekVersion <= oneMinuteAgo || params.dekVersion >= oneMinuteLater) {
+    error(400, "Invalid DEK version");
+  }
+
+  try {
+    await registerCategory(params);
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "Inactive MEK version") {
+      error(400, "Inactive MEK version");
+    }
+    throw e;
+  }
+};

src/lib/server/services/client.ts

@@ -0,0 +1,116 @@
+import { error } from "@sveltejs/kit";
+import {
+  createClient,
+  getClient,
+  getClientByPubKeys,
+  createUserClient,
+  getAllUserClients,
+  getUserClient,
+  setUserClientStateToPending,
+  registerUserClientChallenge,
+  consumeUserClientChallenge,
+} from "$lib/server/db/client";
+import { IntegrityError } from "$lib/server/db/error";
+import { verifyPubKey, verifySignature, generateChallenge } from "$lib/server/modules/crypto";
+import { isInitialMekNeeded } from "$lib/server/modules/mek";
+import env from "$lib/server/loadenv";
+
+export const getUserClientList = async (userId: number) => {
+  const userClients = await getAllUserClients(userId);
+  return {
+    userClients: userClients.map(({ clientId, state }) => ({
+      id: clientId,
+      state: state as "pending" | "active",
+    })),
+  };
+};
+
+const expiresAt = () => new Date(Date.now() + env.challenge.userClientExp);
+
+const createUserClientChallenge = async (
+  ip: string,
+  userId: number,
+  clientId: number,
+  encPubKey: string,
+) => {
+  const { answer, challenge } = await generateChallenge(32, encPubKey);
+  const { id } = await registerUserClientChallenge(
+    userId,
+    clientId,
+    answer.toString("base64"),
+    ip,
+    expiresAt(),
+  );
+  return { id, challenge: challenge.toString("base64") };
+};
+
+export const registerUserClient = async (
+  userId: number,
+  ip: string,
+  encPubKey: string,
+  sigPubKey: string,
+) => {
+  const client = await getClientByPubKeys(encPubKey, sigPubKey);
+  if (client) {
+    try {
+      await createUserClient(userId, client.id);
+      return await createUserClientChallenge(ip, userId, client.id, encPubKey);
+    } catch (e) {
+      if (e instanceof IntegrityError && e.message === "User client already exists") {
+        error(409, "Client already registered");
+      }
+      throw e;
+    }
+  } else {
+    if (encPubKey === sigPubKey) {
+      error(400, "Same public keys");
+    } else if (!verifyPubKey(encPubKey) || !verifyPubKey(sigPubKey)) {
+      error(400, "Invalid public key(s)");
+    }
+
+    try {
+      const { id: clientId } = await createClient(encPubKey, sigPubKey, userId);
+      return await createUserClientChallenge(ip, userId, clientId, encPubKey);
+    } catch (e) {
+      if (e instanceof IntegrityError && e.message === "Public key(s) already registered") {
+        error(409, "Public key(s) already used");
+      }
+      throw e;
+    }
+  }
+};
+
+export const verifyUserClient = async (
+  userId: number,
+  ip: string,
+  challengeId: number,
+  answerSig: string,
+) => {
+  const challenge = await consumeUserClientChallenge(challengeId, userId, ip);
+  if (!challenge) {
+    error(403, "Invalid challenge answer");
+  }
+
+  const client = await getClient(challenge.clientId);
+  if (!client) {
+    error(500, "Invalid challenge answer");
+  } else if (
+    !verifySignature(Buffer.from(challenge.answer, "base64"), answerSig, client.sigPubKey)
+  ) {
+    error(403, "Invalid challenge answer signature");
+  }
+
+  await setUserClientStateToPending(userId, client.id);
+};
+
+export const getUserClientStatus = async (userId: number, clientId: number) => {
+  const userClient = await getUserClient(userId, clientId);
+  if (!userClient) {
+    error(500, "Invalid session id");
+  }
+
+  return {
+    state: userClient.state as "pending" | "active",
+    isInitialMekNeeded: await isInitialMekNeeded(userId),
+  };
+};

src/lib/server/services/directory.ts

@@ -0,0 +1,96 @@
+import { error } from "@sveltejs/kit";
+import { unlink } from "fs/promises";
+import { IntegrityError } from "$lib/server/db/error";
+import {
+  registerDirectory,
+  getAllDirectoriesByParent,
+  getDirectory,
+  setDirectoryEncName,
+  unregisterDirectory,
+  getAllFilesByParent,
+  type DirectoryId,
+  type NewDirectory,
+} from "$lib/server/db/file";
+import type { Ciphertext } from "$lib/server/db/schema";
+
+export const getDirectoryInformation = async (userId: number, directoryId: DirectoryId) => {
+  const directory = directoryId !== "root" ? await getDirectory(userId, directoryId) : undefined;
+  if (directory === null) {
+    error(404, "Invalid directory id");
+  }
+
+  const directories = await getAllDirectoriesByParent(userId, directoryId);
+  const files = await getAllFilesByParent(userId, directoryId);
+  return {
+    metadata: directory && {
+      parentId: directory.parentId ?? ("root" as const),
+      mekVersion: directory.mekVersion,
+      encDek: directory.encDek,
+      dekVersion: directory.dekVersion,
+      encName: directory.encName,
+    },
+    directories: directories.map(({ id }) => id),
+    files: files.map(({ id }) => id),
+  };
+};
+
+const safeUnlink = async (path: string | null) => {
+  if (path) {
+    await unlink(path).catch(console.error);
+  }
+};
+
+export const deleteDirectory = async (userId: number, directoryId: number) => {
+  try {
+    const files = await unregisterDirectory(userId, directoryId);
+    return {
+      files: files.map(({ id, path, thumbnailPath }) => {
+        safeUnlink(path); // Intended
+        safeUnlink(thumbnailPath); // Intended
+        return id;
+      }),
+    };
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "Directory not found") {
+      error(404, "Invalid directory id");
+    }
+    throw e;
+  }
+};
+
+export const renameDirectory = async (
+  userId: number,
+  directoryId: number,
+  dekVersion: Date,
+  newEncName: Ciphertext,
+) => {
+  try {
+    await setDirectoryEncName(userId, directoryId, dekVersion, newEncName);
+  } catch (e) {
+    if (e instanceof IntegrityError) {
+      if (e.message === "Directory not found") {
+        error(404, "Invalid directory id");
+      } else if (e.message === "Invalid DEK version") {
+        error(400, "Invalid DEK version");
+      }
+    }
+    throw e;
+  }
+};
+
+export const createDirectory = async (params: NewDirectory) => {
+  const oneMinuteAgo = new Date(Date.now() - 60 * 1000);
+  const oneMinuteLater = new Date(Date.now() + 60 * 1000);
+  if (params.dekVersion <= oneMinuteAgo || params.dekVersion >= oneMinuteLater) {
+    error(400, "Invalid DEK version");
+  }
+
+  try {
+    await registerDirectory(params);
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "Inactive MEK version") {
+      error(400, "Invalid MEK version");
+    }
+    throw e;
+  }
+};

src/lib/server/services/file.ts

@@ -1,17 +1,72 @@
 import { error } from "@sveltejs/kit";
 import { createHash } from "crypto";
 import { createReadStream, createWriteStream } from "fs";
-import { mkdir, stat } from "fs/promises";
+import { mkdir, stat, unlink } from "fs/promises";
 import { dirname } from "path";
 import { Readable } from "stream";
 import { pipeline } from "stream/promises";
 import { v4 as uuidv4 } from "uuid";
-import { FileRepo, MediaRepo, IntegrityError } from "$lib/server/db";
+import { IntegrityError } from "$lib/server/db/error";
+import {
+  registerFile,
+  getAllFileIds,
+  getAllFileIdsByContentHmac,
+  getFile,
+  setFileEncName,
+  unregisterFile,
+  getAllFileCategories,
+  type NewFile,
+} from "$lib/server/db/file";
+import {
+  updateFileThumbnail,
+  getFileThumbnail,
+  getMissingFileThumbnails,
+} from "$lib/server/db/media";
+import type { Ciphertext } from "$lib/server/db/schema";
 import env from "$lib/server/loadenv";
-import { safeUnlink } from "$lib/server/modules/filesystem";
+
+export const getFileInformation = async (userId: number, fileId: number) => {
+  const file = await getFile(userId, fileId);
+  if (!file) {
+    error(404, "Invalid file id");
+  }
+
+  const categories = await getAllFileCategories(fileId);
+  return {
+    parentId: file.parentId ?? ("root" as const),
+    mekVersion: file.mekVersion,
+    encDek: file.encDek,
+    dekVersion: file.dekVersion,
+    contentType: file.contentType,
+    encContentIv: file.encContentIv,
+    encName: file.encName,
+    encCreatedAt: file.encCreatedAt,
+    encLastModifiedAt: file.encLastModifiedAt,
+    categories: categories.map(({ id }) => id),
+  };
+};
+
+const safeUnlink = async (path: string | null) => {
+  if (path) {
+    await unlink(path).catch(console.error);
+  }
+};
+
+export const deleteFile = async (userId: number, fileId: number) => {
+  try {
+    const { path, thumbnailPath } = await unregisterFile(userId, fileId);
+    safeUnlink(path); // Intended
+    safeUnlink(thumbnailPath); // Intended
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "File not found") {
+      error(404, "Invalid file id");
+    }
+    throw e;
+  }
+};
 
 export const getFileStream = async (userId: number, fileId: number) => {
-  const file = await FileRepo.getFile(userId, fileId);
+  const file = await getFile(userId, fileId);
   if (!file) {
     error(404, "Invalid file id");
   }
@@ -23,8 +78,37 @@ export const getFileStream = async (userId: number, fileId: number) => {
   };
 };
 
+export const renameFile = async (
+  userId: number,
+  fileId: number,
+  dekVersion: Date,
+  newEncName: Ciphertext,
+) => {
+  try {
+    await setFileEncName(userId, fileId, dekVersion, newEncName);
+  } catch (e) {
+    if (e instanceof IntegrityError) {
+      if (e.message === "File not found") {
+        error(404, "Invalid file id");
+      } else if (e.message === "Invalid DEK version") {
+        error(400, "Invalid DEK version");
+      }
+    }
+    throw e;
+  }
+};
+
+export const getFileThumbnailInformation = async (userId: number, fileId: number) => {
+  const thumbnail = await getFileThumbnail(userId, fileId);
+  if (!thumbnail) {
+    error(404, "File or its thumbnail not found");
+  }
+
+  return { updatedAt: thumbnail.updatedAt, encContentIv: thumbnail.encContentIv };
+};
+
 export const getFileThumbnailStream = async (userId: number, fileId: number) => {
-  const thumbnail = await MediaRepo.getFileThumbnail(userId, fileId);
+  const thumbnail = await getFileThumbnail(userId, fileId);
   if (!thumbnail) {
     error(404, "File or its thumbnail not found");
   }
@@ -49,13 +133,7 @@ export const uploadFileThumbnail = async (
   try {
     await pipeline(encContentStream, createWriteStream(path, { flags: "wx", mode: 0o600 }));
 
-    const oldPath = await MediaRepo.updateFileThumbnail(
-      userId,
-      fileId,
-      dekVersion,
-      path,
-      encContentIv,
-    );
+    const oldPath = await updateFileThumbnail(userId, fileId, dekVersion, path, encContentIv);
     safeUnlink(oldPath); // Intended
   } catch (e) {
     await safeUnlink(path);
@@ -71,8 +149,27 @@ export const uploadFileThumbnail = async (
   }
 };
 
+export const getFileList = async (userId: number) => {
+  const fileIds = await getAllFileIds(userId);
+  return { files: fileIds };
+};
+
+export const scanDuplicateFiles = async (
+  userId: number,
+  hskVersion: number,
+  contentHmac: string,
+) => {
+  const fileIds = await getAllFileIdsByContentHmac(userId, hskVersion, contentHmac);
+  return { files: fileIds };
+};
+
+export const scanMissingFileThumbnails = async (userId: number) => {
+  const fileIds = await getMissingFileThumbnails(userId);
+  return { files: fileIds };
+};
+
 export const uploadFile = async (
-  params: Omit<FileRepo.NewFile, "path" | "encContentHash">,
+  params: Omit<NewFile, "path" | "encContentHash">,
   encContentStream: Readable,
   encContentHash: Promise<string>,
 ) => {
@@ -104,7 +201,7 @@ export const uploadFile = async (
       throw new Error("Invalid checksum");
     }
 
-    const { id: fileId } = await FileRepo.registerFile({
+    const { id: fileId } = await registerFile({
       ...params,
       path,
       encContentHash: hash,

src/lib/server/services/hsk.ts

@@ -0,0 +1,31 @@
+import { error } from "@sveltejs/kit";
+import { IntegrityError } from "$lib/server/db/error";
+import { registerInitialHsk, getAllValidHsks } from "$lib/server/db/hsk";
+
+export const getHskList = async (userId: number) => {
+  const hsks = await getAllValidHsks(userId);
+  return {
+    encHsks: hsks.map(({ version, state, mekVersion, encHsk }) => ({
+      version,
+      state,
+      mekVersion,
+      encHsk,
+    })),
+  };
+};
+
+export const registerInitialActiveHsk = async (
+  userId: number,
+  createdBy: number,
+  mekVersion: number,
+  encHsk: string,
+) => {
+  try {
+    await registerInitialHsk(userId, createdBy, mekVersion, encHsk);
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "HSK already registered") {
+      error(409, "Initial HSK already registered");
+    }
+    throw e;
+  }
+};

src/lib/server/services/mek.ts

@@ -0,0 +1,38 @@
+import { error } from "@sveltejs/kit";
+import { setUserClientStateToActive } from "$lib/server/db/client";
+import { IntegrityError } from "$lib/server/db/error";
+import { registerInitialMek, getAllValidClientMeks } from "$lib/server/db/mek";
+import { verifyClientEncMekSig } from "$lib/server/modules/mek";
+
+export const getClientMekList = async (userId: number, clientId: number) => {
+  const clientMeks = await getAllValidClientMeks(userId, clientId);
+  return {
+    encMeks: clientMeks.map(({ version, state, encMek, encMekSig }) => ({
+      version,
+      state,
+      encMek,
+      encMekSig,
+    })),
+  };
+};
+
+export const registerInitialActiveMek = async (
+  userId: number,
+  createdBy: number,
+  encMek: string,
+  encMekSig: string,
+) => {
+  if (!(await verifyClientEncMekSig(userId, createdBy, 1, encMek, encMekSig))) {
+    error(400, "Invalid signature");
+  }
+
+  try {
+    await registerInitialMek(userId, createdBy, encMek, encMekSig);
+    await setUserClientStateToActive(userId, createdBy);
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "MEK already registered") {
+      error(409, "Initial MEK already registered");
+    }
+    throw e;
+  }
+};

src/lib/server/services/user.ts

@@ -0,0 +1,15 @@
+import { error } from "@sveltejs/kit";
+import { getUser, setUserNickname } from "$lib/server/db/user";
+
+export const getUserInformation = async (userId: number) => {
+  const user = await getUser(userId);
+  if (!user) {
+    error(500, "Invalid session id");
+  }
+
+  return { email: user.email, nickname: user.nickname };
+};
+
+export const changeNickname = async (userId: number, nickname: string) => {
+  await setUserNickname(userId, nickname);
+};

src/lib/services/auth.ts

@@ -1,5 +1,10 @@
+import { callPostApi } from "$lib/hooks";
 import { encodeToBase64, decryptChallenge, signMessageRSA } from "$lib/modules/crypto";
-import { trpc, isTRPCClientError } from "$trpc/client";
+import type {
+  SessionUpgradeRequest,
+  SessionUpgradeResponse,
+  SessionUpgradeVerifyRequest,
+} from "$lib/server/schemas";
 
 export const requestSessionUpgrade = async (
   encryptKeyBase64: string,
@@ -8,43 +13,27 @@ export const requestSessionUpgrade = async (
   signKey: CryptoKey,
   force = false,
 ) => {
-  let id, challenge;
-  try {
-    ({ id, challenge } = await trpc().auth.upgrade.mutate({
-      encPubKey: encryptKeyBase64,
-      sigPubKey: verifyKeyBase64,
-    }));
-  } catch (e) {
-    if (isTRPCClientError(e) && e.data?.code === "FORBIDDEN") {
-      return [false, "Unregistered client"] as const;
-    }
-    return [false] as const;
-  }
+  let res = await callPostApi<SessionUpgradeRequest>("/api/auth/upgradeSession", {
+    encPubKey: encryptKeyBase64,
+    sigPubKey: verifyKeyBase64,
+  });
+  if (res.status === 403) return [false, "Unregistered client"] as const;
+  else if (!res.ok) return [false] as const;
+
+  const { id, challenge }: SessionUpgradeResponse = await res.json();
   const answer = await decryptChallenge(challenge, decryptKey);
   const answerSig = await signMessageRSA(answer, signKey);
 
-  try {
-    await trpc().auth.verifyUpgrade.mutate({
-      id,
-      answerSig: encodeToBase64(answerSig),
-      force,
-    });
-  } catch (e) {
-    if (isTRPCClientError(e) && e.data?.code === "CONFLICT") {
-      return [false, "Already logged in"] as const;
-    }
-    return [false] as const;
-  }
-
-  return [true] as const;
+  res = await callPostApi<SessionUpgradeVerifyRequest>("/api/auth/upgradeSession/verify", {
+    id,
+    answerSig: encodeToBase64(answerSig),
+    force,
+  });
+  if (res.status === 409) return [false, "Already logged in"] as const;
+  else return [res.ok] as const;
 };
 
 export const requestLogout = async () => {
-  try {
-    await trpc().auth.logout.mutate();
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  const res = await callPostApi("/api/auth/logout");
+  return res.ok;
 };

src/lib/services/category.ts

@@ -1,6 +1,7 @@
+import { callPostApi } from "$lib/hooks";
 import { generateDataKey, wrapDataKey, encryptString } from "$lib/modules/crypto";
+import type { CategoryCreateRequest, CategoryFileRemoveRequest } from "$lib/server/schemas";
 import type { MasterKey } from "$lib/stores";
-import { trpc } from "$trpc/client";
 
 export const requestCategoryCreation = async (
   name: string,
@@ -10,28 +11,21 @@ export const requestCategoryCreation = async (
   const { dataKey, dataKeyVersion } = await generateDataKey();
   const nameEncrypted = await encryptString(name, dataKey);
 
-  try {
-    await trpc().category.create.mutate({
-      parent: parentId,
-      mekVersion: masterKey.version,
-      dek: await wrapDataKey(dataKey, masterKey.key),
-      dekVersion: dataKeyVersion,
-      name: nameEncrypted.ciphertext,
-      nameIv: nameEncrypted.iv,
-    });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  const res = await callPostApi<CategoryCreateRequest>("/api/category/create", {
+    parent: parentId,
+    mekVersion: masterKey.version,
+    dek: await wrapDataKey(dataKey, masterKey.key),
+    dekVersion: dataKeyVersion.toISOString(),
+    name: nameEncrypted.ciphertext,
+    nameIv: nameEncrypted.iv,
+  });
+  return res.ok;
 };
 
 export const requestFileRemovalFromCategory = async (fileId: number, categoryId: number) => {
-  try {
-    await trpc().category.removeFile.mutate({ id: categoryId, file: fileId });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  const res = await callPostApi<CategoryFileRemoveRequest>(
+    `/api/category/${categoryId}/file/remove`,
+    { file: fileId },
+  );
+  return res.ok;
 };

src/lib/services/file.ts

@@ -1,3 +1,4 @@
+import { callGetApi } from "$lib/hooks";
 import { getAllFileInfos } from "$lib/indexedDB/filesystem";
 import { decryptData } from "$lib/modules/crypto";
 import {
@@ -10,8 +11,11 @@ import {
   downloadFile,
 } from "$lib/modules/file";
 import { getThumbnailUrl } from "$lib/modules/thumbnail";
-import type { FileThumbnailUploadRequest } from "$lib/server/schemas";
-import { trpc } from "$trpc/client";
+import type {
+  FileThumbnailInfoResponse,
+  FileThumbnailUploadRequest,
+  FileListResponse,
+} from "$lib/server/schemas";
 
 export const requestFileDownload = async (
   fileId: number,
@@ -44,20 +48,16 @@ export const requestFileThumbnailUpload = async (
   return await fetch(`/api/file/${fileId}/thumbnail/upload`, { method: "POST", body: form });
 };
 
-export const requestFileThumbnailDownload = async (fileId: number, dataKey?: CryptoKey) => {
+export const requestFileThumbnailDownload = async (fileId: number, dataKey: CryptoKey) => {
   const cache = await getFileThumbnailCache(fileId);
-  if (cache || !dataKey) return cache;
+  if (cache) return cache;
 
-  let thumbnailInfo;
-  try {
-    thumbnailInfo = await trpc().file.thumbnail.query({ id: fileId });
-  } catch {
-    // TODO: Error Handling
-    return null;
-  }
-  const { contentIv: thumbnailEncryptedIv } = thumbnailInfo;
+  let res = await callGetApi(`/api/file/${fileId}/thumbnail`);
+  if (!res.ok) return null;
 
-  const res = await fetch(`/api/file/${fileId}/thumbnail/download`);
+  const { contentIv: thumbnailEncryptedIv }: FileThumbnailInfoResponse = await res.json();
+
+  res = await callGetApi(`/api/file/${fileId}/thumbnail/download`);
   if (!res.ok) return null;
 
   const thumbnailEncrypted = await res.arrayBuffer();
@@ -68,14 +68,10 @@ export const requestFileThumbnailDownload = async (fileId: number, dataKey?: Cry
 };
 
 export const requestDeletedFilesCleanup = async () => {
-  let liveFiles;
-  try {
-    liveFiles = await trpc().file.list.query();
-  } catch {
-    // TODO: Error Handling
-    return;
-  }
+  const res = await callGetApi("/api/file/list");
+  if (!res.ok) return;
 
+  const { files: liveFiles }: FileListResponse = await res.json();
   const liveFilesSet = new Set(liveFiles);
   const maybeCachedFiles = await getAllFileInfos();
 

src/lib/services/key.ts

@@ -1,3 +1,4 @@
+import { callGetApi, callPostApi } from "$lib/hooks";
 import { storeMasterKeys } from "$lib/indexedDB";
 import {
   encodeToBase64,
@@ -8,9 +9,16 @@ import {
   signMasterKeyWrapped,
   verifyMasterKeyWrapped,
 } from "$lib/modules/crypto";
+import type {
+  ClientRegisterRequest,
+  ClientRegisterResponse,
+  ClientRegisterVerifyRequest,
+  InitialHmacSecretRegisterRequest,
+  MasterKeyListResponse,
+  InitialMasterKeyRegisterRequest,
+} from "$lib/server/schemas";
 import { requestSessionUpgrade } from "$lib/services/auth";
 import { masterKeyStore, type ClientKeys } from "$lib/stores";
-import { trpc, isTRPCClientError } from "$trpc/client";
 
 export const requestClientRegistration = async (
   encryptKeyBase64: string,
@@ -18,22 +26,21 @@ export const requestClientRegistration = async (
   verifyKeyBase64: string,
   signKey: CryptoKey,
 ) => {
-  try {
-    const { id, challenge } = await trpc().client.register.mutate({
-      encPubKey: encryptKeyBase64,
-      sigPubKey: verifyKeyBase64,
-    });
-    const answer = await decryptChallenge(challenge, decryptKey);
-    const answerSig = await signMessageRSA(answer, signKey);
-    await trpc().client.verify.mutate({
-      id,
-      answerSig: encodeToBase64(answerSig),
-    });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  let res = await callPostApi<ClientRegisterRequest>("/api/client/register", {
+    encPubKey: encryptKeyBase64,
+    sigPubKey: verifyKeyBase64,
+  });
+  if (!res.ok) return false;
+
+  const { id, challenge }: ClientRegisterResponse = await res.json();
+  const answer = await decryptChallenge(challenge, decryptKey);
+  const answerSig = await signMessageRSA(answer, signKey);
+
+  res = await callPostApi<ClientRegisterVerifyRequest>("/api/client/register/verify", {
+    id,
+    answerSig: encodeToBase64(answerSig),
+  });
+  return res.ok;
 };
 
 export const requestClientRegistrationAndSessionUpgrade = async (
@@ -66,14 +73,10 @@ export const requestClientRegistrationAndSessionUpgrade = async (
 };
 
 export const requestMasterKeyDownload = async (decryptKey: CryptoKey, verifyKey: CryptoKey) => {
-  let masterKeysWrapped;
-  try {
-    masterKeysWrapped = await trpc().mek.list.query();
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  const res = await callGetApi("/api/mek/list");
+  if (!res.ok) return false;
 
+  const { meks: masterKeysWrapped }: MasterKeyListResponse = await res.json();
   const masterKeys = await Promise.all(
     masterKeysWrapped.map(
       async ({ version, state, mek: masterKeyWrapped, mekSig: masterKeyWrappedSig }) => {
@@ -105,27 +108,17 @@ export const requestInitialMasterKeyAndHmacSecretRegistration = async (
   hmacSecretWrapped: string,
   signKey: CryptoKey,
 ) => {
-  try {
-    await trpc().mek.registerInitial.mutate({
-      mek: masterKeyWrapped,
-      mekSig: await signMasterKeyWrapped(masterKeyWrapped, 1, signKey),
-    });
-  } catch (e) {
-    if (isTRPCClientError(e) && (e.data?.code === "FORBIDDEN" || e.data?.code === "CONFLICT")) {
-      return true;
-    }
-    // TODO: Error Handling
-    return false;
+  let res = await callPostApi<InitialMasterKeyRegisterRequest>("/api/mek/register/initial", {
+    mek: masterKeyWrapped,
+    mekSig: await signMasterKeyWrapped(masterKeyWrapped, 1, signKey),
+  });
+  if (!res.ok) {
+    return res.status === 403 || res.status === 409;
   }
 
-  try {
-    await trpc().hsk.registerInitial.mutate({
-      mekVersion: 1,
-      hsk: hmacSecretWrapped,
-    });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  res = await callPostApi<InitialHmacSecretRegisterRequest>("/api/hsk/register/initial", {
+    mekVersion: 1,
+    hsk: hmacSecretWrapped,
+  });
+  return res.ok;
 };

src/lib/stores/file.ts

@@ -0,0 +1,49 @@
+import { writable, type Writable } from "svelte/store";
+
+export interface FileUploadStatus {
+  name: string;
+  parentId: "root" | number;
+  status:
+    | "encryption-pending"
+    | "encrypting"
+    | "upload-pending"
+    | "uploading"
+    | "uploaded"
+    | "canceled"
+    | "error";
+  progress?: number;
+  rate?: number;
+  estimated?: number;
+}
+
+export interface FileDownloadStatus {
+  id: number;
+  status:
+    | "download-pending"
+    | "downloading"
+    | "decryption-pending"
+    | "decrypting"
+    | "decrypted"
+    | "canceled"
+    | "error";
+  progress?: number;
+  rate?: number;
+  estimated?: number;
+  result?: ArrayBuffer;
+}
+
+export const fileUploadStatusStore = writable<Writable<FileUploadStatus>[]>([]);
+
+export const fileDownloadStatusStore = writable<Writable<FileDownloadStatus>[]>([]);
+
+export const isFileUploading = (
+  status: FileUploadStatus["status"],
+): status is "encryption-pending" | "encrypting" | "upload-pending" | "uploading" => {
+  return ["encryption-pending", "encrypting", "upload-pending", "uploading"].includes(status);
+};
+
+export const isFileDownloading = (
+  status: FileDownloadStatus["status"],
+): status is "download-pending" | "downloading" | "decryption-pending" | "decrypting" => {
+  return ["download-pending", "downloading", "decryption-pending", "decrypting"].includes(status);
+};

src/lib/stores/index.ts

@@ -1 +1,2 @@
+export * from "./file";
 export * from "./key";

src/lib/types/filesystem.d.ts

@@ -1,2 +0,0 @@
-type DirectoryId = "root" | number;
-type CategoryId = "root" | number;

src/lib/utils/index.ts

@@ -1,4 +0,0 @@
-export * from "./format";
-export * from "./gotoStateful";
-export * from "./promise";
-export * from "./sort";

src/lib/utils/promise.ts

@@ -1,16 +0,0 @@
-export const monotonicResolve = <T>(
-  promises: (Promise<T> | false)[],
-  callback: (value: T) => void,
-) => {
-  let latestResolvedIndex = -1;
-  promises
-    .filter((promise) => !!promise)
-    .forEach((promise, index) => {
-      promise.then((value) => {
-        if (index > latestResolvedIndex) {
-          latestResolvedIndex = index;
-          callback(value);
-        }
-      });
-    });
-};

src/lib/utils/sort.ts

@@ -1,58 +0,0 @@
-interface SortEntry {
-  name?: string;
-  date?: Date;
-}
-
-export enum SortBy {
-  NAME_ASC,
-  NAME_DESC,
-  DATE_ASC,
-  DATE_DESC,
-}
-
-type SortFunc = (a: SortEntry, b: SortEntry) => number;
-
-const collator = new Intl.Collator(undefined, { numeric: true, sensitivity: "base" });
-
-const sortByNameAsc: SortFunc = ({ name: a }, { name: b }) => {
-  if (a && b) return collator.compare(a, b);
-  if (a) return -1;
-  if (b) return 1;
-  return 0;
-};
-
-const sortByNameDesc: SortFunc = (a, b) => -sortByNameAsc(a, b);
-
-const sortByDateAsc: SortFunc = ({ date: a }, { date: b }) => {
-  if (a && b) return a.getTime() - b.getTime();
-  if (a) return -1;
-  if (b) return 1;
-  return 0;
-};
-
-const sortByDateDesc: SortFunc = (a, b) => -sortByDateAsc(a, b);
-
-export const sortEntries = <T extends SortEntry>(entries: T[], sortBy = SortBy.NAME_ASC) => {
-  let sortFunc: SortFunc;
-
-  switch (sortBy) {
-    case SortBy.NAME_ASC:
-      sortFunc = sortByNameAsc;
-      break;
-    case SortBy.NAME_DESC:
-      sortFunc = sortByNameDesc;
-      break;
-    case SortBy.DATE_ASC:
-      sortFunc = sortByDateAsc;
-      break;
-    case SortBy.DATE_DESC:
-      sortFunc = sortByDateDesc;
-      break;
-    default:
-      const exhaustive: never = sortBy;
-      sortFunc = exhaustive;
-  }
-
-  entries.sort(sortFunc);
-  return entries;
-};

src/routes/(fullscreen)/auth/changePassword/+page.svelte

@@ -6,14 +6,8 @@
 
   let oldPassword = $state("");
   let newPassword = $state("");
-  let confirmPassword = $state("");
 
   const changePassword = async () => {
-    if (newPassword !== confirmPassword) {
-      // TODO: Alert
-      return;
-    }
-
     if (await requestPasswordChange(oldPassword, newPassword)) {
       await goto("/menu");
     }
@@ -36,7 +30,6 @@
 
     <TextInput bind:value={oldPassword} placeholder="기존 비밀번호" type="password" />
     <TextInput bind:value={newPassword} placeholder="새 비밀번호" type="password" />
-    <TextInput bind:value={confirmPassword} placeholder="새 비밀번호 확인" type="password" />
   </TitledDiv>
   <BottomDiv>
     <Button onclick={changePassword} class="w-full">비밀번호 바꾸기</Button>

src/routes/(fullscreen)/auth/changePassword/service.ts

@@ -1,11 +1,10 @@
-import { trpc } from "$trpc/client";
+import { callPostApi } from "$lib/hooks";
+import type { PasswordChangeRequest } from "$lib/server/schemas";
 
 export const requestPasswordChange = async (oldPassword: string, newPassword: string) => {
-  try {
-    await trpc().auth.changePassword.mutate({ oldPassword, newPassword });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  const res = await callPostApi<PasswordChangeRequest>("/api/auth/changePassword", {
+    oldPassword,
+    newPassword,
+  });
+  return res.ok;
 };

src/routes/(fullscreen)/auth/login/service.ts

@@ -1,4 +1,5 @@
-import { trpc } from "$trpc/client";
+import { callPostApi } from "$lib/hooks";
+import type { LoginRequest } from "$lib/server/schemas";
 
 export { requestLogout } from "$lib/services/auth";
 export { requestDeletedFilesCleanup } from "$lib/services/file";
@@ -8,11 +9,6 @@ export {
 } from "$lib/services/key";
 
 export const requestLogin = async (email: string, password: string) => {
-  try {
-    await trpc().auth.login.mutate({ email, password });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  const res = await callPostApi<LoginRequest>("/api/auth/login", { email, password });
+  return res.ok;
 };

src/routes/(fullscreen)/file/[id]/+page.svelte

@@ -1,14 +1,18 @@
 <script lang="ts">
   import FileSaver from "file-saver";
   import { untrack } from "svelte";
+  import { get, type Writable } from "svelte/store";
   import { goto } from "$app/navigation";
-  import { page } from "$app/state";
   import { FullscreenDiv } from "$lib/components/atoms";
   import { Categories, IconEntryButton, TopBar } from "$lib/components/molecules";
-  import { getFileInfo, type FileInfo, type MaybeFileInfo } from "$lib/modules/filesystem";
+  import {
+    getFileInfo,
+    getCategoryInfo,
+    type FileInfo,
+    type CategoryInfo,
+  } from "$lib/modules/filesystem";
   import { captureVideoThumbnail } from "$lib/modules/thumbnail";
-  import { getFileDownloadState } from "$lib/modules/file";
-  import { masterKeyStore } from "$lib/stores";
+  import { fileDownloadStatusStore, isFileDownloading, masterKeyStore } from "$lib/stores";
   import AddToCategoryBottomSheet from "./AddToCategoryBottomSheet.svelte";
   import DownloadStatus from "./DownloadStatus.svelte";
   import {
@@ -17,46 +21,44 @@
     requestThumbnailUpload,
     requestFileAdditionToCategory,
   } from "./service";
-  import TopBarMenu from "./TopBarMenu.svelte";
 
-  import IconMoreVert from "~icons/material-symbols/more-vert";
   import IconCamera from "~icons/material-symbols/camera";
   import IconClose from "~icons/material-symbols/close";
   import IconAddCircle from "~icons/material-symbols/add-circle";
 
   let { data } = $props();
 
-  let infoPromise: Promise<MaybeFileInfo> | undefined = $state();
-  let info: FileInfo | null = $state(null);
-  let downloadState = $derived(getFileDownloadState(data.id));
+  let info: Writable<FileInfo | null> | undefined = $state();
+  let categories: Writable<CategoryInfo | null>[] = $state([]);
 
-  let isMenuOpen = $state(false);
   let isAddToCategoryBottomSheetOpen = $state(false);
 
+  let downloadStatus = $derived(
+    $fileDownloadStatusStore.find((statusStore) => {
+      const { id, status } = get(statusStore);
+      return id === data.id && isFileDownloading(status);
+    }),
+  );
+
   let isDownloadRequested = $state(false);
   let viewerType: "image" | "video" | undefined = $state();
-  let fileBlob: Blob | undefined = $state();
   let fileBlobUrl: string | undefined = $state();
   let videoElement: HTMLVideoElement | undefined = $state();
 
   const updateViewer = async (buffer: ArrayBuffer, contentType: string) => {
-    fileBlob = new Blob([buffer], { type: contentType });
-    fileBlobUrl = URL.createObjectURL(fileBlob);
+    const fileBlob = new Blob([buffer], { type: contentType });
+    if (contentType === "image/heic") {
+      const { default: heic2any } = await import("heic2any");
+      fileBlobUrl = URL.createObjectURL(
+        (await heic2any({ blob: fileBlob, toType: "image/jpeg" })) as Blob,
+      );
+    } else if (viewerType) {
+      fileBlobUrl = URL.createObjectURL(fileBlob);
+    }
+
     return fileBlob;
   };
 
-  const convertHeicToJpeg = async () => {
-    if (fileBlob?.type !== "image/heic") return;
-
-    URL.revokeObjectURL(fileBlobUrl!);
-    fileBlobUrl = undefined;
-
-    const { default: heic2any } = await import("heic2any");
-    fileBlobUrl = URL.createObjectURL(
-      (await heic2any({ blob: fileBlob, toType: "image/jpeg" })) as Blob,
-    );
-  };
-
   const updateThumbnail = async (dataKey: CryptoKey, dataKeyVersion: Date) => {
     const thumbnail = await captureVideoThumbnail(videoElement!);
     await requestThumbnailUpload(data.id, thumbnail, dataKey, dataKeyVersion);
@@ -65,29 +67,28 @@
   const addToCategory = async (categoryId: number) => {
     await requestFileAdditionToCategory(data.id, categoryId);
     isAddToCategoryBottomSheetOpen = false;
-    infoPromise = getFileInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+    info = getFileInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
   };
 
   const removeFromCategory = async (categoryId: number) => {
     await requestFileRemovalFromCategory(data.id, categoryId);
-    infoPromise = getFileInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+    info = getFileInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
   };
 
   $effect(() => {
-    infoPromise = getFileInfo(data.id, $masterKeyStore?.get(1)?.key!).then((fileInfo) => {
-      if (fileInfo.exists) {
-        info = fileInfo;
-      }
-      return fileInfo;
-    });
-    info = null;
+    info = getFileInfo(data.id, $masterKeyStore?.get(1)?.key!);
     isDownloadRequested = false;
     viewerType = undefined;
   });
 
   $effect(() => {
-    if (info?.dataKey) {
-      const contentType = info.contentType;
+    categories =
+      $info?.categoryIds.map((id) => getCategoryInfo(id, $masterKeyStore?.get(1)?.key!)) ?? [];
+  });
+
+  $effect(() => {
+    if ($info && $info.dataKey && $info.contentIv) {
+      const contentType = $info.contentType;
       if (contentType.startsWith("image")) {
         viewerType = "image";
       } else if (contentType.startsWith("video")) {
@@ -95,24 +96,24 @@
       }
 
       untrack(() => {
-        if (!downloadState && !isDownloadRequested) {
+        if (!downloadStatus && !isDownloadRequested) {
           isDownloadRequested = true;
-          requestFileDownload(data.id, info!.contentIv!, info!.dataKey!.key).then(
-            async (buffer) => {
-              const blob = await updateViewer(buffer, contentType);
-              if (!viewerType) {
-                FileSaver.saveAs(blob, info!.name);
-              }
-            },
-          );
+          requestFileDownload(data.id, $info.contentIv!, $info.dataKey!).then(async (buffer) => {
+            const blob = await updateViewer(buffer, contentType);
+            if (!viewerType) {
+              FileSaver.saveAs(blob, $info.name);
+            }
+          });
         }
       });
     }
   });
 
   $effect(() => {
-    if (info && downloadState?.status === "decrypted") {
-      untrack(() => !isDownloadRequested && updateViewer(downloadState.result!, info!.contentType));
+    if ($info && $downloadStatus?.status === "decrypted") {
+      untrack(
+        () => !isDownloadRequested && updateViewer($downloadStatus.result!, $info.contentType),
+      );
     }
   });
 
@@ -123,88 +124,65 @@
   <title>파일</title>
 </svelte:head>
 
-{#if info}
-  <TopBar title={info.name}>
-    <!-- svelte-ignore a11y_no_static_element_interactions -->
-    <!-- svelte-ignore a11y_click_events_have_key_events -->
-    <div onclick={(e) => e.stopPropagation()}>
-      <button
-        onclick={() => (isMenuOpen = !isMenuOpen)}
-        class="w-[2.3rem] flex-shrink-0 rounded-full p-1 active:bg-black active:bg-opacity-[0.04]"
-      >
-        <IconMoreVert class="text-2xl" />
-      </button>
-      <TopBarMenu
-        bind:isOpen={isMenuOpen}
-        directoryId={["category", "gallery"].includes(page.url.searchParams.get("from") ?? "")
-          ? info.parentId
-          : undefined}
-        {fileBlob}
-        filename={info.name}
-      />
-    </div>
-  </TopBar>
-  <FullscreenDiv>
-    <div class="space-y-4 pb-4">
-      {#if downloadState}
-        <DownloadStatus state={downloadState} />
-      {/if}
-      {#if viewerType}
-        <div class="flex w-full justify-center">
-          {#snippet viewerLoading(message: string)}
-            <p class="text-gray-500">{message}</p>
-          {/snippet}
+<TopBar title={$info?.name} />
+<FullscreenDiv>
+  <div class="space-y-4 pb-4">
+    <DownloadStatus status={downloadStatus} />
+    {#if $info && viewerType}
+      <div class="flex w-full justify-center">
+        {#snippet viewerLoading(message: string)}
+          <p class="text-gray-500">{message}</p>
+        {/snippet}
 
-          {#if viewerType === "image"}
-            {#if fileBlobUrl}
-              <img src={fileBlobUrl} alt={info.name} onerror={convertHeicToJpeg} />
-            {:else}
-              {@render viewerLoading("이미지를 불러오고 있어요.")}
-            {/if}
-          {:else if viewerType === "video"}
-            {#if fileBlobUrl}
-              <div class="flex flex-col space-y-2">
-                <!-- svelte-ignore a11y_media_has_caption -->
-                <video bind:this={videoElement} src={fileBlobUrl} controls muted></video>
-                <IconEntryButton
-                  icon={IconCamera}
-                  onclick={() => updateThumbnail(info?.dataKey?.key!, info?.dataKey?.version!)}
-                  class="w-full"
-                >
-                  이 장면을 썸네일로 설정하기
-                </IconEntryButton>
-              </div>
-            {:else}
-              {@render viewerLoading("비디오를 불러오고 있어요.")}
-            {/if}
+        {#if viewerType === "image"}
+          {#if fileBlobUrl}
+            <img src={fileBlobUrl} alt={$info.name} />
+          {:else}
+            {@render viewerLoading("이미지를 불러오고 있어요.")}
           {/if}
-        </div>
-      {/if}
-      <div class="space-y-2">
-        <p class="text-lg font-bold">카테고리</p>
-        <div class="space-y-1">
-          <Categories
-            categories={info.categories}
-            categoryMenuIcon={IconClose}
-            onCategoryClick={({ id }) => goto(`/category/${id}`)}
-            onCategoryMenuClick={({ id }) => removeFromCategory(id)}
-          />
-          <IconEntryButton
-            icon={IconAddCircle}
-            onclick={() => (isAddToCategoryBottomSheetOpen = true)}
-            class="h-12 w-full"
-            iconClass="text-gray-600"
-            textClass="text-gray-700"
-          >
-            카테고리에 추가하기
-          </IconEntryButton>
-        </div>
+        {:else if viewerType === "video"}
+          {#if fileBlobUrl}
+            <div class="flex flex-col space-y-2">
+              <!-- svelte-ignore a11y_media_has_caption -->
+              <video bind:this={videoElement} src={fileBlobUrl} controls muted></video>
+              <IconEntryButton
+                icon={IconCamera}
+                onclick={() => updateThumbnail($info.dataKey!, $info.dataKeyVersion!)}
+                class="w-full"
+              >
+                이 장면을 썸네일로 설정하기
+              </IconEntryButton>
+            </div>
+          {:else}
+            {@render viewerLoading("비디오를 불러오고 있어요.")}
+          {/if}
+        {/if}
+      </div>
+    {/if}
+    <div class="space-y-2">
+      <p class="text-lg font-bold">카테고리</p>
+      <div class="space-y-1">
+        <Categories
+          {categories}
+          categoryMenuIcon={IconClose}
+          onCategoryClick={({ id }) => goto(`/category/${id}`)}
+          onCategoryMenuClick={({ id }) => removeFromCategory(id)}
+        />
+        <IconEntryButton
+          icon={IconAddCircle}
+          onclick={() => (isAddToCategoryBottomSheetOpen = true)}
+          class="h-12 w-full"
+          iconClass="text-gray-600"
+          textClass="text-gray-700"
+        >
+          카테고리에 추가하기
+        </IconEntryButton>
       </div>
     </div>
-  </FullscreenDiv>
+  </div>
+</FullscreenDiv>
 
-  <AddToCategoryBottomSheet
-    bind:isOpen={isAddToCategoryBottomSheetOpen}
-    onAddToCategoryClick={addToCategory}
-  />
-{/if}
+<AddToCategoryBottomSheet
+  bind:isOpen={isAddToCategoryBottomSheetOpen}
+  onAddToCategoryClick={addToCategory}
+/>

src/routes/(fullscreen)/file/[id]/AddToCategoryBottomSheet.svelte

@@ -1,8 +1,9 @@
 <script lang="ts">
+  import type { Writable } from "svelte/store";
   import { BottomDiv, BottomSheet, Button, FullscreenDiv } from "$lib/components/atoms";
   import { SubCategories } from "$lib/components/molecules";
   import { CategoryCreateModal } from "$lib/components/organisms";
-  import { getCategoryInfo, type MaybeCategoryInfo } from "$lib/modules/filesystem";
+  import { getCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem";
   import { masterKeyStore } from "$lib/stores";
   import { requestCategoryCreation } from "./service";
 
@@ -13,48 +14,46 @@
 
   let { onAddToCategoryClick, isOpen = $bindable() }: Props = $props();
 
-  let categoryInfoPromise: Promise<MaybeCategoryInfo> | undefined = $state();
+  let category: Writable<CategoryInfo | null> | undefined = $state();
 
   let isCategoryCreateModalOpen = $state(false);
 
   $effect(() => {
     if (isOpen) {
-      categoryInfoPromise = getCategoryInfo("root", $masterKeyStore?.get(1)?.key!);
+      category = getCategoryInfo("root", $masterKeyStore?.get(1)?.key!);
     }
   });
 </script>
 
-{#await categoryInfoPromise then categoryInfo}
-  {#if categoryInfo?.exists}
-    <BottomSheet bind:isOpen class="flex flex-col">
-      <FullscreenDiv>
-        <SubCategories
-          class="py-4"
-          info={categoryInfo}
-          onSubCategoryClick={({ id }) =>
-            (categoryInfoPromise = getCategoryInfo(id, $masterKeyStore?.get(1)?.key!))}
-          onSubCategoryCreateClick={() => (isCategoryCreateModalOpen = true)}
-          subCategoryCreatePosition="top"
-        />
-        {#if categoryInfo.id !== "root"}
-          <BottomDiv>
-            <Button onclick={() => onAddToCategoryClick(categoryInfo.id)} class="w-full">
-              이 카테고리에 추가하기
-            </Button>
-          </BottomDiv>
-        {/if}
-      </FullscreenDiv>
-    </BottomSheet>
+{#if $category}
+  <BottomSheet bind:isOpen class="flex flex-col">
+    <FullscreenDiv>
+      <SubCategories
+        class="py-4"
+        info={$category}
+        onSubCategoryClick={({ id }) =>
+          (category = getCategoryInfo(id, $masterKeyStore?.get(1)?.key!))}
+        onSubCategoryCreateClick={() => (isCategoryCreateModalOpen = true)}
+        subCategoryCreatePosition="top"
+      />
+      {#if $category.id !== "root"}
+        <BottomDiv>
+          <Button onclick={() => onAddToCategoryClick($category.id)} class="w-full">
+            이 카테고리에 추가하기
+          </Button>
+        </BottomDiv>
+      {/if}
+    </FullscreenDiv>
+  </BottomSheet>
+{/if}
 
-    <CategoryCreateModal
-      bind:isOpen={isCategoryCreateModalOpen}
-      onCreateClick={async (name: string) => {
-        if (await requestCategoryCreation(name, categoryInfo.id, $masterKeyStore?.get(1)!)) {
-          categoryInfoPromise = getCategoryInfo(categoryInfo.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
-          return true;
-        }
-        return false;
-      }}
-    />
-  {/if}
-{/await}
+<CategoryCreateModal
+  bind:isOpen={isCategoryCreateModalOpen}
+  onCreateClick={async (name: string) => {
+    if (await requestCategoryCreation(name, $category!.id, $masterKeyStore?.get(1)!)) {
+      category = getCategoryInfo($category!.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+      return true;
+    }
+    return false;
+  }}
+/>

src/routes/(fullscreen)/file/[id]/DownloadStatus.svelte

@@ -1,31 +1,32 @@
 <script lang="ts">
-  import { isFileDownloading, type FileDownloadState } from "$lib/modules/file";
-  import { formatNetworkSpeed } from "$lib/utils";
+  import type { Writable } from "svelte/store";
+  import { formatNetworkSpeed } from "$lib/modules/util";
+  import { isFileDownloading, type FileDownloadStatus } from "$lib/stores";
 
   interface Props {
-    state: FileDownloadState;
+    status?: Writable<FileDownloadStatus>;
   }
 
-  let { state }: Props = $props();
+  let { status }: Props = $props();
 </script>
 
-{#if isFileDownloading(state.status)}
+{#if $status && isFileDownloading($status.status)}
   <div class="w-full rounded-xl bg-gray-100 p-3">
     <p class="font-medium">
-      {#if state.status === "download-pending"}
+      {#if $status.status === "download-pending"}
         다운로드를 기다리는 중
-      {:else if state.status === "downloading"}
+      {:else if $status.status === "downloading"}
         다운로드하는 중
-      {:else if state.status === "decryption-pending"}
+      {:else if $status.status === "decryption-pending"}
         복호화를 기다리는 중
-      {:else if state.status === "decrypting"}
+      {:else if $status.status === "decrypting"}
         복호화하는 중
       {/if}
     </p>
     <p class="text-xs">
-      {#if state.status === "downloading"}
+      {#if $status.status === "downloading"}
         전송됨
-        {Math.floor((state.progress ?? 0) * 100)}% · {formatNetworkSpeed((state.rate ?? 0) * 8)}
+        {Math.floor(($status.progress ?? 0) * 100)}% · {formatNetworkSpeed(($status.rate ?? 0) * 8)}
       {/if}
     </p>
   </div>

src/routes/(fullscreen)/file/[id]/TopBarMenu.svelte

@@ -1,59 +0,0 @@
-<script lang="ts">
-  import FileSaver from "file-saver";
-  import type { Component } from "svelte";
-  import type { SvelteHTMLElements } from "svelte/elements";
-  import { fly } from "svelte/transition";
-  import { goto } from "$app/navigation";
-
-  import IconFolderOpen from "~icons/material-symbols/folder-open";
-  import IconCloudDownload from "~icons/material-symbols/cloud-download";
-
-  interface Props {
-    directoryId?: "root" | number;
-    fileBlob?: Blob;
-    filename?: string;
-    isOpen: boolean;
-  }
-
-  let { directoryId, fileBlob, filename, isOpen = $bindable() }: Props = $props();
-</script>
-
-<svelte:window onclick={() => (isOpen = false)} />
-
-{#if isOpen && (directoryId || fileBlob)}
-  <div
-    class="absolute right-2 top-full z-20 space-y-1 rounded-lg bg-white px-1 py-2 shadow-2xl"
-    transition:fly={{ y: -8, duration: 200 }}
-  >
-    <p class="px-3 pt-2 text-sm font-semibold text-gray-600">더보기</p>
-    <div class="flex flex-col">
-      {#snippet menuButton(
-        Icon: Component<SvelteHTMLElements["svg"]>,
-        text: string,
-        onclick: () => void,
-      )}
-        <button {onclick} class="rounded-xl active:bg-gray-100">
-          <div
-            class="flex items-center gap-x-3 px-3 py-2 text-lg text-gray-700 transition active:scale-95"
-          >
-            <Icon />
-            <p class="font-medium">{text}</p>
-          </div>
-        </button>
-      {/snippet}
-
-      {#if directoryId}
-        {@render menuButton(IconFolderOpen, "폴더에서 보기", () =>
-          goto(
-            directoryId === "root" ? "/directory?from=file" : `/directory/${directoryId}?from=file`,
-          ),
-        )}
-      {/if}
-      {#if fileBlob}
-        {@render menuButton(IconCloudDownload, "다운로드", () => {
-          FileSaver.saveAs(fileBlob, filename);
-        })}
-      {/if}
-    </div>
-  </div>
-{/if}

src/routes/(fullscreen)/file/[id]/service.ts

@@ -1,7 +1,8 @@
+import { callPostApi } from "$lib/hooks";
 import { encryptData } from "$lib/modules/crypto";
 import { storeFileThumbnailCache } from "$lib/modules/file";
+import type { CategoryFileAddRequest } from "$lib/server/schemas";
 import { requestFileThumbnailUpload } from "$lib/services/file";
-import { trpc } from "$trpc/client";
 
 export { requestCategoryCreation, requestFileRemovalFromCategory } from "$lib/services/category";
 export { requestFileDownload } from "$lib/services/file";
@@ -22,11 +23,8 @@ export const requestThumbnailUpload = async (
 };
 
 export const requestFileAdditionToCategory = async (fileId: number, categoryId: number) => {
-  try {
-    await trpc().category.addFile.mutate({ id: categoryId, file: fileId });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  const res = await callPostApi<CategoryFileAddRequest>(`/api/category/${categoryId}/file/add`, {
+    file: fileId,
+  });
+  return res.ok;
 };

src/routes/(fullscreen)/file/downloads/+page.svelte

@@ -1,31 +1,19 @@
 <script lang="ts">
-  import { onMount } from "svelte";
+  import { get } from "svelte/store";
   import { FullscreenDiv } from "$lib/components/atoms";
   import { TopBar } from "$lib/components/molecules";
-  import {
-    getDownloadingFiles,
-    clearDownloadedFiles,
-    type FileDownloadState,
-  } from "$lib/modules/file";
-  import { bulkGetFileInfo, type MaybeFileInfo } from "$lib/modules/filesystem";
-  import { masterKeyStore } from "$lib/stores";
+  import { fileDownloadStatusStore, isFileDownloading } from "$lib/stores";
   import File from "./File.svelte";
 
-  let downloadingFiles: { info: MaybeFileInfo; state: FileDownloadState }[] = $state([]);
+  let downloadingFiles = $derived(
+    $fileDownloadStatusStore.filter((status) => isFileDownloading(get(status).status)),
+  );
 
-  onMount(async () => {
-    const states = getDownloadingFiles();
-    const infos = await bulkGetFileInfo(
-      states.map(({ id }) => id),
-      $masterKeyStore?.get(1)?.key!,
+  $effect(() => () => {
+    $fileDownloadStatusStore = $fileDownloadStatusStore.filter((status) =>
+      isFileDownloading(get(status).status),
     );
-    downloadingFiles = states.map((state) => ({
-      info: infos.get(state.id)!,
-      state,
-    }));
   });
-
-  $effect(() => clearDownloadedFiles);
 </script>
 
 <svelte:head>
@@ -35,10 +23,8 @@
 <TopBar />
 <FullscreenDiv>
   <div class="space-y-2 pb-4">
-    {#each downloadingFiles as { info, state } (info.id)}
-      {#if info.exists}
-        <File {info} {state} />
-      {/if}
+    {#each downloadingFiles as status}
+      <File {status} />
     {/each}
   </div>
 </FullscreenDiv>

src/routes/(fullscreen)/file/downloads/File.svelte

@@ -1,7 +1,8 @@
 <script lang="ts">
-  import type { FileDownloadState } from "$lib/modules/file";
-  import type { SummarizedFileInfo } from "$lib/modules/filesystem";
-  import { formatNetworkSpeed } from "$lib/utils";
+  import { get, type Writable } from "svelte/store";
+  import { getFileInfo, type FileInfo } from "$lib/modules/filesystem";
+  import { formatNetworkSpeed } from "$lib/modules/util";
+  import { masterKeyStore, type FileDownloadStatus } from "$lib/stores";
 
   import IconCloud from "~icons/material-symbols/cloud";
   import IconCloudDownload from "~icons/material-symbols/cloud-download";
@@ -11,49 +12,56 @@
   import IconError from "~icons/material-symbols/error";
 
   interface Props {
-    info: SummarizedFileInfo;
-    state: FileDownloadState;
+    status: Writable<FileDownloadStatus>;
   }
 
-  let { info, state }: Props = $props();
+  let { status }: Props = $props();
+
+  let fileInfo: Writable<FileInfo | null> | undefined = $state();
+
+  $effect(() => {
+    fileInfo = getFileInfo(get(status).id, $masterKeyStore?.get(1)?.key!);
+  });
 </script>
 
-<div class="flex h-14 items-center gap-x-4 p-2">
-  <div class="flex-shrink-0 text-lg text-gray-600">
-    {#if state.status === "download-pending"}
-      <IconCloud />
-    {:else if state.status === "downloading"}
-      <IconCloudDownload />
-    {:else if state.status === "decryption-pending"}
-      <IconLock />
-    {:else if state.status === "decrypting"}
-      <IconLockClock />
-    {:else if state.status === "decrypted"}
-      <IconCheckCircle class="text-green-500" />
-    {:else if state.status === "error"}
-      <IconError class="text-red-500" />
-    {/if}
-  </div>
-  <div class="flex-grow overflow-hidden">
-    <p title={info.name} class="truncate font-medium">
-      {info.name}
-    </p>
-    <p class="text-xs text-gray-800">
-      {#if state.status === "download-pending"}
-        다운로드를 기다리는 중
-      {:else if state.status === "downloading"}
-        전송됨
-        {Math.floor((state.progress ?? 0) * 100)}% ·
-        {formatNetworkSpeed((state.rate ?? 0) * 8)}
-      {:else if state.status === "decryption-pending"}
-        복호화를 기다리는 중
-      {:else if state.status === "decrypting"}
-        복호화하는 중
-      {:else if state.status === "decrypted"}
-        다운로드 완료
-      {:else if state.status === "error"}
-        다운로드 실패
+{#if $fileInfo}
+  <div class="flex h-14 items-center gap-x-4 p-2">
+    <div class="flex-shrink-0 text-lg text-gray-600">
+      {#if $status.status === "download-pending"}
+        <IconCloud />
+      {:else if $status.status === "downloading"}
+        <IconCloudDownload />
+      {:else if $status.status === "decryption-pending"}
+        <IconLock />
+      {:else if $status.status === "decrypting"}
+        <IconLockClock />
+      {:else if $status.status === "decrypted"}
+        <IconCheckCircle class="text-green-500" />
+      {:else if $status.status === "error"}
+        <IconError class="text-red-500" />
       {/if}
-    </p>
+    </div>
+    <div class="flex-grow overflow-hidden">
+      <p title={$fileInfo.name} class="truncate font-medium">
+        {$fileInfo.name}
+      </p>
+      <p class="text-xs text-gray-800">
+        {#if $status.status === "download-pending"}
+          다운로드를 기다리는 중
+        {:else if $status.status === "downloading"}
+          전송됨
+          {Math.floor(($status.progress ?? 0) * 100)}% ·
+          {formatNetworkSpeed(($status.rate ?? 0) * 8)}
+        {:else if $status.status === "decryption-pending"}
+          복호화를 기다리는 중
+        {:else if $status.status === "decrypting"}
+          복호화하는 중
+        {:else if $status.status === "decrypted"}
+          다운로드 완료
+        {:else if $status.status === "error"}
+          다운로드 실패
+        {/if}
+      </p>
+    </div>
   </div>
-</div>
+{/if}

src/routes/(fullscreen)/file/uploads/+page.svelte

@@ -1,12 +1,19 @@
 <script lang="ts">
+  import { get } from "svelte/store";
   import { FullscreenDiv } from "$lib/components/atoms";
   import { TopBar } from "$lib/components/molecules";
-  import { getUploadingFiles, clearUploadedFiles } from "$lib/modules/file";
+  import { fileUploadStatusStore, isFileUploading } from "$lib/stores";
   import File from "./File.svelte";
 
-  const uploadingFiles = getUploadingFiles();
+  let uploadingFiles = $derived(
+    $fileUploadStatusStore.filter((status) => isFileUploading(get(status).status)),
+  );
 
-  $effect(() => clearUploadedFiles);
+  $effect(() => () => {
+    $fileUploadStatusStore = $fileUploadStatusStore.filter((status) =>
+      isFileUploading(get(status).status),
+    );
+  });
 </script>
 
 <svelte:head>
@@ -16,8 +23,8 @@
 <TopBar />
 <FullscreenDiv>
   <div class="space-y-2 pb-4">
-    {#each uploadingFiles as file}
-      <File state={file} />
+    {#each uploadingFiles as status}
+      <File {status} />
     {/each}
   </div>
 </FullscreenDiv>

src/routes/(fullscreen)/file/uploads/File.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
-  import type { FileUploadState } from "$lib/modules/file";
-  import { formatNetworkSpeed } from "$lib/utils";
+  import type { Writable } from "svelte/store";
+  import { formatNetworkSpeed } from "$lib/modules/util";
+  import type { FileUploadStatus } from "$lib/stores";
 
   import IconPending from "~icons/material-symbols/pending";
   import IconLockClock from "~icons/material-symbols/lock-clock";
@@ -10,45 +11,45 @@
   import IconError from "~icons/material-symbols/error";
 
   interface Props {
-    state: FileUploadState;
+    status: Writable<FileUploadStatus>;
   }
 
-  let { state }: Props = $props();
+  let { status }: Props = $props();
 </script>
 
 <div class="flex h-14 items-center gap-x-4 p-2">
   <div class="flex-shrink-0 text-lg text-gray-600">
-    {#if state.status === "encryption-pending"}
+    {#if $status.status === "encryption-pending"}
       <IconPending />
-    {:else if state.status === "encrypting"}
+    {:else if $status.status === "encrypting"}
       <IconLockClock />
-    {:else if state.status === "upload-pending"}
+    {:else if $status.status === "upload-pending"}
       <IconCloud />
-    {:else if state.status === "uploading"}
+    {:else if $status.status === "uploading"}
       <IconCloudUpload />
-    {:else if state.status === "uploaded"}
+    {:else if $status.status === "uploaded"}
       <IconCloudDone class="text-blue-500" />
-    {:else if state.status === "error"}
+    {:else if $status.status === "error"}
       <IconError class="text-red-500" />
     {/if}
   </div>
   <div class="flex-grow overflow-hidden">
-    <p title={state.name} class="truncate font-medium">
-      {state.name}
+    <p title={$status.name} class="truncate font-medium">
+      {$status.name}
     </p>
     <p class="text-xs text-gray-800">
-      {#if state.status === "encryption-pending"}
+      {#if $status.status === "encryption-pending"}
         준비 중
-      {:else if state.status === "encrypting"}
+      {:else if $status.status === "encrypting"}
         암호화하는 중
-      {:else if state.status === "upload-pending"}
+      {:else if $status.status === "upload-pending"}
         업로드를 기다리는 중
-      {:else if state.status === "uploading"}
+      {:else if $status.status === "uploading"}
         전송됨
-        {Math.floor((state.progress ?? 0) * 100)}% · {formatNetworkSpeed((state.rate ?? 0) * 8)}
-      {:else if state.status === "uploaded"}
+        {Math.floor(($status.progress ?? 0) * 100)}% · {formatNetworkSpeed(($status.rate ?? 0) * 8)}
+      {:else if $status.status === "uploaded"}
         업로드 완료
-      {:else if state.status === "error"}
+      {:else if $status.status === "error"}
         업로드 실패
       {/if}
     </p>

src/routes/(fullscreen)/gallery/+page.server.ts

@@ -1,7 +0,0 @@
-import { createCaller } from "$trpc/router.server";
-import type { PageServerLoad } from "./$types";
-
-export const load: PageServerLoad = async (event) => {
-  const files = await createCaller(event).file.list();
-  return { files };
-};

src/routes/(fullscreen)/gallery/+page.svelte

@@ -1,29 +0,0 @@
-<script lang="ts">
-  import { onMount } from "svelte";
-  import { goto } from "$app/navigation";
-  import { FullscreenDiv } from "$lib/components/atoms";
-  import { TopBar } from "$lib/components/molecules";
-  import { Gallery } from "$lib/components/organisms";
-  import { bulkGetFileInfo, type MaybeFileInfo } from "$lib/modules/filesystem";
-  import { masterKeyStore } from "$lib/stores";
-
-  let { data } = $props();
-
-  let files: MaybeFileInfo[] = $state([]);
-
-  onMount(async () => {
-    files = Array.from((await bulkGetFileInfo(data.files, $masterKeyStore?.get(1)?.key!)).values());
-  });
-</script>
-
-<svelte:head>
-  <title>사진 및 동영상</title>
-</svelte:head>
-
-<TopBar title="사진 및 동영상" />
-<FullscreenDiv>
-  <Gallery
-    files={files.filter((file) => file?.exists)}
-    onFileClick={({ id }) => goto(`/file/${id}?from=gallery`)}
-  />
-</FullscreenDiv>

src/routes/(fullscreen)/key/export/+page.ts

@@ -1,5 +1,5 @@
 import { error } from "@sveltejs/kit";
-import { keyExportState } from "$lib/utils";
+import { keyExportState } from "$lib/hooks/gotoStateful";
 import type { PageLoad } from "./$types";
 
 export const load: PageLoad = async () => {

src/routes/(fullscreen)/key/generate/+page.svelte

@@ -4,9 +4,9 @@
   import { BottomDiv, Button, FullscreenDiv, TextButton } from "$lib/components/atoms";
   import { TitledDiv } from "$lib/components/molecules";
   import { ForceLoginModal } from "$lib/components/organisms";
+  import { gotoStateful } from "$lib/hooks";
   import { storeClientKeys } from "$lib/modules/key";
   import { clientKeyStore } from "$lib/stores";
-  import { gotoStateful } from "$lib/utils";
   import Order from "./Order.svelte";
   import {
     generateClientKeys,

src/routes/(fullscreen)/settings/cache/+page.svelte

@@ -1,17 +1,18 @@
 <script lang="ts">
   import { onMount } from "svelte";
+  import type { Writable } from "svelte/store";
   import { FullscreenDiv } from "$lib/components/atoms";
   import { TopBar } from "$lib/components/molecules";
   import type { FileCacheIndex } from "$lib/indexedDB";
   import { getFileCacheIndex, deleteFileCache as doDeleteFileCache } from "$lib/modules/file";
-  import { bulkGetFileInfo, type MaybeFileInfo } from "$lib/modules/filesystem";
+  import { getFileInfo, type FileInfo } from "$lib/modules/filesystem";
+  import { formatFileSize } from "$lib/modules/util";
   import { masterKeyStore } from "$lib/stores";
-  import { formatFileSize } from "$lib/utils";
   import File from "./File.svelte";
 
   interface FileCache {
     index: FileCacheIndex;
-    info: MaybeFileInfo;
+    fileInfo: Writable<FileInfo | null>;
   }
 
   let fileCache: FileCache[] | undefined = $state();
@@ -22,16 +23,11 @@
     fileCache = fileCache?.filter(({ index }) => index.fileId !== fileId);
   };
 
-  onMount(async () => {
-    const indexes = getFileCacheIndex();
-    const infos = await bulkGetFileInfo(
-      indexes.map(({ fileId }) => fileId),
-      $masterKeyStore?.get(1)?.key!,
-    );
-    fileCache = indexes
-      .map((index, i) => ({
+  onMount(() => {
+    fileCache = getFileCacheIndex()
+      .map((index) => ({
         index,
-        info: infos.get(index.fileId)!,
+        fileInfo: getFileInfo(index.fileId, $masterKeyStore?.get(1)?.key!),
       }))
       .sort((a, b) => a.index.lastRetrievedAt.getTime() - b.index.lastRetrievedAt.getTime());
   });
@@ -59,8 +55,8 @@
         <p>캐시를 삭제하더라도 원본 파일은 삭제되지 않아요.</p>
       </div>
       <div class="space-y-2">
-        {#each fileCache as { index, info }}
-          <File {index} {info} onDeleteClick={deleteFileCache} />
+        {#each fileCache as { index, fileInfo }}
+          <File {index} info={fileInfo} onDeleteClick={deleteFileCache} />
         {/each}
       </div>
     </div>

src/routes/(fullscreen)/settings/cache/File.svelte

@@ -1,7 +1,8 @@
 <script lang="ts">
+  import type { Writable } from "svelte/store";
   import type { FileCacheIndex } from "$lib/indexedDB";
-  import type { MaybeFileInfo } from "$lib/modules/filesystem";
-  import { formatDate, formatFileSize } from "$lib/utils";
+  import type { FileInfo } from "$lib/modules/filesystem";
+  import { formatDate, formatFileSize } from "$lib/modules/util";
 
   import IconDraft from "~icons/material-symbols/draft";
   import IconScanDelete from "~icons/material-symbols/scan-delete";
@@ -9,7 +10,7 @@
 
   interface Props {
     index: FileCacheIndex;
-    info: MaybeFileInfo;
+    info: Writable<FileInfo | null>;
     onDeleteClick: (fileId: number) => void;
   }
 
@@ -17,7 +18,7 @@
 </script>
 
 <div class="flex h-14 items-center gap-x-4 p-2">
-  {#if info.exists}
+  {#if $info}
     <div class="flex-shrink-0 rounded-full bg-blue-100 p-1 text-xl">
       <IconDraft class="text-blue-400" />
     </div>
@@ -27,8 +28,8 @@
     </div>
   {/if}
   <div class="flex-grow overflow-hidden">
-    {#if info.exists}
-      <p title={info.name} class="truncate font-medium">{info.name}</p>
+    {#if $info}
+      <p title={$info.name} class="truncate font-medium">{$info.name}</p>
     {:else}
       <p class="font-medium">삭제된 파일</p>
     {/if}

src/routes/(fullscreen)/settings/thumbnail/+page.server.ts

@@ -1,7 +0,0 @@
-import { createCaller } from "$trpc/router.server";
-import type { PageServerLoad } from "./$types";
-
-export const load: PageServerLoad = async (event) => {
-  const files = await createCaller(event).file.listWithoutThumbnail();
-  return { files };
-};

src/routes/(fullscreen)/settings/thumbnail/+page.svelte

@@ -1,10 +1,11 @@
 <script lang="ts">
   import { onMount } from "svelte";
+  import { get } from "svelte/store";
   import { goto } from "$app/navigation";
   import { BottomDiv, Button, FullscreenDiv } from "$lib/components/atoms";
   import { IconEntryButton, TopBar } from "$lib/components/molecules";
   import { deleteAllFileThumbnailCaches } from "$lib/modules/file";
-  import { bulkGetFileInfo } from "$lib/modules/filesystem";
+  import { getFileInfo } from "$lib/modules/filesystem";
   import { masterKeyStore } from "$lib/stores";
   import File from "./File.svelte";
   import {
@@ -19,18 +20,18 @@
 
   const generateAllThumbnails = () => {
     persistentStates.files.forEach(({ info }) => {
-      if (info.exists) {
-        requestThumbnailGeneration(info);
+      const fileInfo = get(info);
+      if (fileInfo) {
+        requestThumbnailGeneration(fileInfo);
       }
     });
   };
 
-  onMount(async () => {
-    const fileInfos = await bulkGetFileInfo(data.files, $masterKeyStore?.get(1)?.key!);
-    persistentStates.files = persistentStates.files.map(({ id, status }) => ({
-      id,
-      info: fileInfos.get(id)!,
-      status,
+  onMount(() => {
+    persistentStates.files = data.files.map((fileId) => ({
+      id: fileId,
+      info: getFileInfo(fileId, $masterKeyStore?.get(1)?.key!),
+      status: getGenerationStatus(fileId),
     }));
   });
 </script>
@@ -56,14 +57,12 @@
           </p>
           <div class="space-y-2">
             {#each persistentStates.files as { info, status }}
-              {#if info.exists}
-                <File
-                  {info}
-                  generationStatus={status}
-                  onclick={({ id }) => goto(`/file/${id}`)}
-                  onGenerateThumbnailClick={requestThumbnailGeneration}
-                />
-              {/if}
+              <File
+                {info}
+                generationStatus={status}
+                onclick={({ id }) => goto(`/file/${id}`)}
+                onGenerateThumbnailClick={requestThumbnailGeneration}
+              />
             {/each}
           </div>
         </div>

src/routes/(fullscreen)/settings/thumbnail/+page.ts

@@ -0,0 +1,14 @@
+import { error } from "@sveltejs/kit";
+import { callPostApi } from "$lib/hooks";
+import type { MissingThumbnailFileScanResponse } from "$lib/server/schemas";
+import type { PageLoad } from "./$types";
+
+export const load: PageLoad = async ({ fetch }) => {
+  const res = await callPostApi("/api/file/scanMissingThumbnails", undefined, fetch);
+  if (!res.ok) {
+    error(500, "Internal server error");
+  }
+
+  const { files }: MissingThumbnailFileScanResponse = await res.json();
+  return { files };
+};

src/routes/(fullscreen)/settings/thumbnail/File.svelte

@@ -14,31 +14,33 @@
   import { ActionEntryButton } from "$lib/components/atoms";
   import { DirectoryEntryLabel } from "$lib/components/molecules";
   import type { FileInfo } from "$lib/modules/filesystem";
-  import { formatDateTime } from "$lib/utils";
+  import { formatDateTime } from "$lib/modules/util";
   import type { GenerationStatus } from "./service.svelte";
 
   import IconCamera from "~icons/material-symbols/camera";
 
   interface Props {
-    info: FileInfo;
-    onclick: (file: FileInfo) => void;
-    onGenerateThumbnailClick: (file: FileInfo) => void;
+    info: Writable<FileInfo | null>;
+    onclick: (selectedFile: FileInfo) => void;
+    onGenerateThumbnailClick: (selectedFile: FileInfo) => void;
     generationStatus?: Writable<GenerationStatus>;
   }
 
   let { info, onclick, onGenerateThumbnailClick, generationStatus }: Props = $props();
 </script>
 
-<ActionEntryButton
-  class="h-14"
-  onclick={() => onclick(info)}
-  actionButtonIcon={!$generationStatus || $generationStatus === "error" ? IconCamera : undefined}
-  onActionButtonClick={() => onGenerateThumbnailClick(info)}
-  actionButtonClass="text-gray-800"
->
-  {@const subtext =
-    $generationStatus && $generationStatus !== "uploaded"
-      ? subtexts[$generationStatus]
-      : formatDateTime(info.createdAt ?? info.lastModifiedAt)}
-  <DirectoryEntryLabel type="file" name={info.name} {subtext} />
-</ActionEntryButton>
+{#if $info}
+  <ActionEntryButton
+    class="h-14"
+    onclick={() => onclick($info)}
+    actionButtonIcon={!$generationStatus || $generationStatus === "error" ? IconCamera : undefined}
+    onActionButtonClick={() => onGenerateThumbnailClick($info)}
+    actionButtonClass="text-gray-800"
+  >
+    {@const subtext =
+      $generationStatus && $generationStatus !== "uploaded"
+        ? subtexts[$generationStatus]
+        : formatDateTime($info.createdAt ?? $info.lastModifiedAt)}
+    <DirectoryEntryLabel type="file" name={$info.name} {subtext} />
+  </ActionEntryButton>
+{/if}

src/routes/(fullscreen)/settings/thumbnail/service.svelte.ts

@@ -2,7 +2,7 @@ import { limitFunction } from "p-limit";
 import { get, writable, type Writable } from "svelte/store";
 import { encryptData } from "$lib/modules/crypto";
 import { storeFileThumbnailCache } from "$lib/modules/file";
-import type { FileInfo, MaybeFileInfo } from "$lib/modules/filesystem";
+import type { FileInfo } from "$lib/modules/filesystem";
 import { generateThumbnail as doGenerateThumbnail } from "$lib/modules/thumbnail";
 import { requestFileDownload, requestFileThumbnailUpload } from "$lib/services/file";
 
@@ -17,7 +17,7 @@ export type GenerationStatus =
 
 interface File {
   id: number;
-  info: MaybeFileInfo;
+  info: Writable<FileInfo | null>;
   status?: Writable<GenerationStatus>;
 }
 
@@ -129,11 +129,7 @@ export const requestThumbnailGeneration = async (fileInfo: FileInfo) => {
 
   let fileSize = 0;
   try {
-    const file = await requestFileDownload(
-      fileInfo.id,
-      fileInfo.contentIv!,
-      fileInfo.dataKey?.key!,
-    );
+    const file = await requestFileDownload(fileInfo.id, fileInfo.contentIv!, fileInfo.dataKey!);
     fileSize = file.byteLength;
 
     memoryUsage += fileSize;
@@ -145,11 +141,11 @@ export const requestThumbnailGeneration = async (fileInfo: FileInfo) => {
       status,
       file,
       fileInfo.contentType,
-      fileInfo.dataKey?.key!,
+      fileInfo.dataKey!,
     );
     if (
       !thumbnail ||
-      !(await requestThumbnailUpload(status, fileInfo.id, fileInfo.dataKey?.version!, thumbnail))
+      !(await requestThumbnailUpload(status, fileInfo.id, fileInfo.dataKeyVersion!, thumbnail))
     ) {
       status.set("error");
     }

src/routes/(main)/BottomBar.svelte

@@ -22,7 +22,7 @@
   <AdaptiveDiv class="flex justify-evenly px-4 py-2">
     {#each pages as { path, label, icon: Icon }}
       <button
-        onclick={() => goto(path, { replaceState: true })}
+        onclick={() => goto(path)}
         class={[
           "w-16 active:rounded-xl active:bg-gray-100",
           !page.url.pathname.startsWith(path) && "text-gray-600",

src/routes/(main)/category/[[id]]/+page.svelte

@@ -1,8 +1,9 @@
 <script lang="ts">
+  import type { Writable } from "svelte/store";
   import { goto } from "$app/navigation";
   import { TopBar } from "$lib/components/molecules";
   import { Category, CategoryCreateModal } from "$lib/components/organisms";
-  import { getCategoryInfo, type MaybeCategoryInfo } from "$lib/modules/filesystem";
+  import { getCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem";
   import { masterKeyStore } from "$lib/stores";
   import CategoryDeleteModal from "./CategoryDeleteModal.svelte";
   import CategoryMenuBottomSheet from "./CategoryMenuBottomSheet.svelte";
@@ -18,7 +19,9 @@
   let { data } = $props();
   let context = createContext();
 
-  let infoPromise: Promise<MaybeCategoryInfo> | undefined = $state();
+  let info: Writable<CategoryInfo | null> | undefined = $state();
+
+  let isFileRecursive = $state(false);
 
   let isCategoryCreateModalOpen = $state(false);
   let isCategoryMenuBottomSheetOpen = $state(false);
@@ -26,7 +29,7 @@
   let isCategoryDeleteModalOpen = $state(false);
 
   $effect(() => {
-    infoPromise = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!);
+    info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!);
   });
 </script>
 
@@ -34,70 +37,68 @@
   <title>카테고리</title>
 </svelte:head>
 
-{#await infoPromise then info}
-  {#if info?.exists}
-    {#if info.id !== "root"}
-      <TopBar title={info.name} />
-    {/if}
-    <div class="min-h-full bg-gray-100 pb-[5.5em]">
-      <Category
-        bind:isFileRecursive={info.isFileRecursive}
-        {info}
-        onFileClick={({ id }) => goto(`/file/${id}?from=category`)}
-        onFileRemoveClick={async ({ id }) => {
-          await requestFileRemovalFromCategory(id, data.id as number);
-          infoPromise = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
-        }}
-        onSubCategoryClick={({ id }) => goto(`/category/${id}`)}
-        onSubCategoryCreateClick={() => (isCategoryCreateModalOpen = true)}
-        onSubCategoryMenuClick={(subCategory) => {
-          context.selectedCategory = subCategory;
-          isCategoryMenuBottomSheetOpen = true;
-        }}
-      />
-    </div>
-
-    <CategoryCreateModal
-      bind:isOpen={isCategoryCreateModalOpen}
-      onCreateClick={async (name: string) => {
-        if (await requestCategoryCreation(name, data.id, $masterKeyStore?.get(1)!)) {
-          infoPromise = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
-          return true;
-        }
-        return false;
+{#if data.id !== "root"}
+  <TopBar title={$info?.name} />
+{/if}
+<div class="min-h-full bg-gray-100 pb-[5.5em]">
+  {#if $info}
+    <Category
+      bind:isFileRecursive
+      info={$info}
+      onFileClick={({ id }) => goto(`/file/${id}`)}
+      onFileRemoveClick={async ({ id }) => {
+        await requestFileRemovalFromCategory(id, data.id as number);
+        info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
       }}
-    />
-
-    <CategoryMenuBottomSheet
-      bind:isOpen={isCategoryMenuBottomSheetOpen}
-      onRenameClick={() => {
-        isCategoryMenuBottomSheetOpen = false;
-        isCategoryRenameModalOpen = true;
-      }}
-      onDeleteClick={() => {
-        isCategoryMenuBottomSheetOpen = false;
-        isCategoryDeleteModalOpen = true;
-      }}
-    />
-    <CategoryRenameModal
-      bind:isOpen={isCategoryRenameModalOpen}
-      onRenameClick={async (newName: string) => {
-        if (await requestCategoryRename(context.selectedCategory!, newName)) {
-          infoPromise = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
-          return true;
-        }
-        return false;
-      }}
-    />
-    <CategoryDeleteModal
-      bind:isOpen={isCategoryDeleteModalOpen}
-      onDeleteClick={async () => {
-        if (await requestCategoryDeletion(context.selectedCategory!)) {
-          infoPromise = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
-          return true;
-        }
-        return false;
+      onSubCategoryClick={({ id }) => goto(`/category/${id}`)}
+      onSubCategoryCreateClick={() => (isCategoryCreateModalOpen = true)}
+      onSubCategoryMenuClick={(subCategory) => {
+        context.selectedCategory = subCategory;
+        isCategoryMenuBottomSheetOpen = true;
       }}
     />
   {/if}
-{/await}
+</div>
+
+<CategoryCreateModal
+  bind:isOpen={isCategoryCreateModalOpen}
+  onCreateClick={async (name: string) => {
+    if (await requestCategoryCreation(name, data.id, $masterKeyStore?.get(1)!)) {
+      info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+      return true;
+    }
+    return false;
+  }}
+/>
+
+<CategoryMenuBottomSheet
+  bind:isOpen={isCategoryMenuBottomSheetOpen}
+  onRenameClick={() => {
+    isCategoryMenuBottomSheetOpen = false;
+    isCategoryRenameModalOpen = true;
+  }}
+  onDeleteClick={() => {
+    isCategoryMenuBottomSheetOpen = false;
+    isCategoryDeleteModalOpen = true;
+  }}
+/>
+<CategoryRenameModal
+  bind:isOpen={isCategoryRenameModalOpen}
+  onRenameClick={async (newName: string) => {
+    if (await requestCategoryRename(context.selectedCategory!, newName)) {
+      info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+      return true;
+    }
+    return false;
+  }}
+/>
+<CategoryDeleteModal
+  bind:isOpen={isCategoryDeleteModalOpen}
+  onDeleteClick={async () => {
+    if (await requestCategoryDeletion(context.selectedCategory!)) {
+      info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+      return true;
+    }
+    return false;
+  }}
+/>

src/routes/(main)/category/[[id]]/CategoryDeleteModal.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
   import { ActionModal } from "$lib/components/molecules";
-  import { truncateString } from "$lib/utils";
+  import { truncateString } from "$lib/modules/util";
   import { useContext } from "./service.svelte";
 
   interface Props {