카테고리 관련 API 요청을 TanStack Query로 마이그레이션 (WiP)

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 +1,23 @@
 import { includeIgnoreFile } from "@eslint/compat";
 import js from "@eslint/js";
-import { defineConfig } from "eslint/config";
+import svelteQuery from "@tanstack/eslint-plugin-query";
 import prettier from "eslint-config-prettier";
 import svelte from "eslint-plugin-svelte";
 import tailwind from "eslint-plugin-tailwindcss";
 import globals from "globals";
 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: {
@@ -26,19 +25,14 @@ 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,
       },
     },
   },
+  ...svelteQuery.configs["flat/recommended"],
 );

package.json

@@ -1,7 +1,7 @@
 {
   "name": "arkvault",
   "private": true,
-  "version": "0.6.0",
+  "version": "0.5.1",
   "type": "module",
   "scripts": {
     "dev": "vite dev",
@@ -16,57 +16,55 @@
     "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",
+    "@tanstack/eslint-plugin-query": "^5.81.2",
+    "@tanstack/svelte-query": "^5.83.0",
     "@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

@@ -1,58 +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;
-    placeholder?: Snippet;
-  }
-
-  let { class: className, count, item, itemHeight, placeholder }: Props = $props();
-
-  let element: HTMLElement | undefined = $state();
-  let scrollMargin = $state(0);
-
-  let virtualizer = $derived(
-    createWindowVirtualizer({
-      count,
-      estimateSize: itemHeight,
-      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 +1,52 @@
 <script lang="ts">
   import type { Component } from "svelte";
   import type { SvelteHTMLElements } from "svelte/elements";
-  import type { SubCategoryInfo } from "$lib/modules/filesystem";
-  import { SortBy, sortEntries } from "$lib/utils";
+  import { derived } from "svelte/store";
+  import type { CategoryId } from "$lib/indexedDB";
+  import { getCategoryInfo, type SubCategoryInfo } from "$lib/modules/filesystem2";
+  import { SortBy, sortEntries } from "$lib/modules/util";
+  import { masterKeyStore } from "$lib/stores";
   import Category from "./Category.svelte";
   import type { SelectedCategory } from "./service";
 
   interface Props {
-    categories: SubCategoryInfo[];
+    categoryIds: CategoryId[];
     categoryMenuIcon?: Component<SvelteHTMLElements["svg"]>;
     onCategoryClick: (category: SelectedCategory) => void;
     onCategoryMenuClick?: (category: SelectedCategory) => void;
     sortBy?: SortBy;
   }
 
-  let { categories, categoryMenuIcon, onCategoryClick, onCategoryMenuClick }: Props = $props();
+  let {
+    categoryIds,
+    categoryMenuIcon,
+    onCategoryClick,
+    onCategoryMenuClick,
+    sortBy = SortBy.NAME_ASC,
+  }: Props = $props();
 
-  let categoriesWithName = $derived(sortEntries(structuredClone($state.snapshot(categories))));
+  let categories = $derived(
+    derived(
+      categoryIds.map((id) => getCategoryInfo(id, $masterKeyStore?.get(1)?.key!)),
+      (infos) => {
+        const categories = infos
+          .filter(($info) => $info.status === "success")
+          .map(($info) => ({
+            name: $info.data.name,
+            info: $info.data as SubCategoryInfo,
+          }));
+        sortEntries(categories, sortBy);
+        return categories;
+      },
+    ),
+  );
 </script>
 
-{#if categoriesWithName.length > 0}
+{#if $categories.length > 0}
   <div class="space-y-1">
-    {#each categoriesWithName as category}
+    {#each $categories as { info }}
       <Category
-        info={category}
+        {info}
         menuIcon={categoryMenuIcon}
         onclick={onCategoryClick}
         onMenuClick={onCategoryMenuClick}

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

@@ -3,7 +3,7 @@
   import type { SvelteHTMLElements } from "svelte/elements";
   import { ActionEntryButton } from "$lib/components/atoms";
   import { CategoryLabel } from "$lib/components/molecules";
-  import type { SubCategoryInfo } from "$lib/modules/filesystem";
+  import type { SubCategoryInfo } from "$lib/modules/filesystem2";
   import type { SelectedCategory } from "./service";
 
   interface Props {
@@ -14,13 +14,27 @@
   }
 
   let { info, menuIcon, onclick, onMenuClick }: Props = $props();
+
+  const openCategory = () => {
+    const { id, dataKey, dataKeyVersion, name } = info;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onclick({ id, dataKey, dataKeyVersion, name });
+  };
+
+  const openMenu = () => {
+    const { id, dataKey, dataKeyVersion, name } = info;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onMenuClick!({ id, dataKey, dataKeyVersion, name });
+  };
 </script>
 
 <ActionEntryButton
   class="h-12"
-  onclick={() => onclick(info)}
+  onclick={openCategory}
   actionButtonIcon={menuIcon}
-  onActionButtonClick={() => onMenuClick?.(info)}
+  onActionButtonClick={openMenu}
 >
   <CategoryLabel name={info.name} />
 </ActionEntryButton>

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

@@ -2,7 +2,7 @@
   import type { Component } from "svelte";
   import type { ClassValue, SvelteHTMLElements } from "svelte/elements";
   import { Categories, IconEntryButton, type SelectedCategory } from "$lib/components/molecules";
-  import type { CategoryInfo } from "$lib/modules/filesystem";
+  import type { CategoryInfo } from "$lib/modules/filesystem2";
 
   import IconAddCircle from "~icons/material-symbols/add-circle";
 
@@ -43,12 +43,14 @@
   {#if subCategoryCreatePosition === "top"}
     {@render subCategoryCreate()}
   {/if}
+  {#key info}
     <Categories
-    categories={info.subCategories}
+      categoryIds={info.subCategoryIds}
       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

@@ -1,8 +1,10 @@
 <script lang="ts">
-  import { CheckBox, RowVirtualizer } from "$lib/components/atoms";
+  import { derived } from "svelte/store";
+  import { CheckBox } from "$lib/components/atoms";
   import { SubCategories, type SelectedCategory } from "$lib/components/molecules";
-  import type { CategoryInfo } from "$lib/modules/filesystem";
-  import { sortEntries } from "$lib/utils";
+  import { getFileInfo, type CategoryInfo } from "$lib/modules/filesystem2";
+  import { SortBy, sortEntries } from "$lib/modules/util";
+  import { masterKeyStore } from "$lib/stores";
   import File from "./File.svelte";
   import type { SelectedFile } from "./service";
 
@@ -10,12 +12,13 @@
 
   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 {
@@ -25,14 +28,37 @@
     onSubCategoryClick,
     onSubCategoryCreateClick,
     onSubCategoryMenuClick,
+    sortBy = SortBy.NAME_ASC,
     isFileRecursive = $bindable(),
   }: Props = $props();
 
-  let files = $derived(
-    sortEntries(
+  let fileInfos = $derived(
     info.files
-        ?.map((file) => ({ name: file.name, details: file }))
-        .filter(({ details }) => isFileRecursive || !details.isRecursive) ?? [],
+      ?.filter(({ isRecursive }) => isFileRecursive || !isRecursive)
+      .map(({ id, isRecursive }) => ({
+        info: getFileInfo(id, $masterKeyStore?.get(1)?.key!),
+        isRecursive,
+      })) ?? [],
+  );
+  let files = $derived(
+    derived(
+      fileInfos.map(({ info }) => info),
+      (infos) => {
+        const files = infos
+          .map(($info, i) => {
+            if ($info.status === "success") {
+              return {
+                name: $info.data.name,
+                isRecursive: fileInfos[i]!.isRecursive,
+                info: $info.data,
+              };
+            }
+            return undefined;
+          })
+          .filter((info) => info !== undefined);
+        sortEntries(files, sortBy);
+        return files;
+      },
     ),
   );
 </script>
@@ -54,28 +80,25 @@
     <div class="space-y-4 bg-white p-4">
       <div class="flex items-center justify-between">
         <p class="text-lg font-bold text-gray-800">파일</p>
+        {#if isFileRecursive !== undefined}
           <CheckBox bind:checked={isFileRecursive}>
             <p class="font-medium">하위 카테고리의 파일</p>
           </CheckBox>
+        {/if}
       </div>
-      <RowVirtualizer
-        count={files.length}
-        itemHeight={(index) => 48 + (index + 1 < files.length ? 4 : 0)}
-      >
-        {#snippet item(index)}
-          {@const { details } = files[index]!}
-          <div class={[index + 1 < files.length && "pb-1"]}>
+      <div class="space-y-1">
+        {#key info}
+          {#each $files as { info, isRecursive }}
             <File
-              info={details}
+              {info}
               onclick={onFileClick}
-              onRemoveClick={!details.isRecursive ? onFileRemoveClick : undefined}
+              onRemoveClick={!isRecursive ? onFileRemoveClick : undefined}
             />
+          {:else}
+            <p class="text-gray-500 text-center">이 카테고리에 추가된 파일이 없어요.</p>
+          {/each}
+        {/key}
       </div>
-        {/snippet}
-        {#snippet placeholder()}
-          <p class="text-center text-gray-500">이 카테고리에 추가된 파일이 없어요.</p>
-        {/snippet}
-      </RowVirtualizer>
     </div>
   {/if}
 </div>

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

@@ -1,38 +1,56 @@
 <script lang="ts">
-  import { browser } from "$app/environment";
   import { ActionEntryButton } from "$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/filesystem2";
+  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: FileInfo;
+    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;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onclick({ id, dataKey, dataKeyVersion, name });
+  };
+
+  const removeFile = () => {
+    const { id, dataKey, dataKeyVersion, name } = info;
+    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)}
+  onclick={openFile}
   actionButtonIcon={onRemoveClick && IconClose}
-  onActionButtonClick={() => onRemoveClick?.(info)}
+  onActionButtonClick={removeFile}
 >
-  {#await thumbnailPromise}
-    <DirectoryEntryLabel type="file" name={info.name} />
-  {:then thumbnail}
-    <DirectoryEntryLabel type="file" thumbnail={thumbnail ?? undefined} name={info.name} />
-  {/await}
+  <DirectoryEntryLabel type="file" {thumbnail} name={info.name} />
 </ActionEntryButton>

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 +1,24 @@
+interface FetchOptions {
+  fetch?: typeof fetch;
+  signal?: AbortSignal;
+}
+
+export const callGetApi = async (
+  input: RequestInfo,
+  { fetch = globalThis.fetch, signal }: FetchOptions = {},
+) => {
+  return await fetch(input, { method: "GET", signal });
+};
+
+export const callPostApi = async <T>(
+  input: RequestInfo,
+  payload?: T,
+  { fetch = globalThis.fetch, signal }: FetchOptions = {},
+) => {
+  return await fetch(input, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: payload ? JSON.stringify(payload) : undefined,
+    signal,
+  });
+};

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;
@@ -16,6 +18,8 @@ interface FileInfo {
   categoryIds: number[];
 }
 
+export type CategoryId = "root" | number;
+
 interface CategoryInfo {
   id: number;
   parentId: CategoryId;
@@ -58,6 +62,10 @@ export const storeDirectoryInfo = async (directoryInfo: DirectoryInfo) => {
   await filesystem.directory.put(directoryInfo);
 };
 
+export const updateDirectoryInfo = async (id: number, changes: { name?: string }) => {
+  await filesystem.directory.update(id, changes);
+};
+
 export const deleteDirectoryInfo = async (id: number) => {
   await filesystem.directory.delete(id);
 };
@@ -78,6 +86,10 @@ export const storeFileInfo = async (fileInfo: FileInfo) => {
   await filesystem.file.put(fileInfo);
 };
 
+export const updateFileInfo = async (id: number, changes: { name?: string }) => {
+  await filesystem.file.update(id, changes);
+};
+
 export const deleteFileInfo = async (id: number) => {
   await filesystem.file.delete(id);
 };
@@ -94,7 +106,10 @@ export const storeCategoryInfo = async (categoryInfo: CategoryInfo) => {
   await filesystem.category.put(categoryInfo);
 };
 
-export const updateCategoryInfo = async (id: number, changes: { isFileRecursive?: boolean }) => {
+export const updateCategoryInfo = async (
+  id: number,
+  changes: { name?: string; isFileRecursive?: boolean },
+) => {
   await filesystem.category.update(id, changes);
 };
 

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

@@ -1,9 +1,11 @@
 import axios from "axios";
 import ExifReader from "exifreader";
 import { limitFunction } from "p-limit";
+import { writable, type Writable } from "svelte/store";
 import {
   encodeToBase64,
   generateDataKey,
+  makeAESKeyNonextractable,
   wrapDataKey,
   encryptData,
   encryptString,
@@ -12,58 +14,30 @@ 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[] = $state([]);
-
-const isFileUploading = (status: FileUploadState["status"]) =>
-  ["encryption-pending", "encrypting", "upload-pending", "uploading"].includes(status);
-
-export const getUploadingFiles = (parentId?: DirectoryId) => {
-  return uploadingFiles.filter(
-    (file): file is LiveFileUploadState =>
-      (parentId === undefined || file.parentId === parentId) && isFileUploading(file.status),
-  );
-};
-
-export const clearUploadedFiles = () => {
-  uploadingFiles = uploadingFiles.filter((file) => isFileUploading(file.status));
-};
+import {
+  fileUploadStatusStore,
+  type MasterKey,
+  type HmacSecret,
+  type FileUploadStatus,
+} from "$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 +80,16 @@ 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);
 
@@ -131,15 +113,20 @@ 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 {
+      dataKey: await makeAESKeyNonextractable(dataKey),
       dataKeyWrapped,
       dataKeyVersion,
       fileType,
       fileEncrypted,
       fileEncryptedHash,
       nameEncrypted,
+      createdAt,
       createdAtEncrypted,
       lastModifiedAtEncrypted,
       thumbnail: thumbnailEncrypted && { plaintext: thumbnailBuffer, ...thumbnailEncrypted },
@@ -149,14 +136,20 @@ 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 +163,10 @@ const requestFileUpload = limitFunction(
       }
     }
 
-    state.status = "uploaded";
+    status.update((value) => {
+      value.status = "uploaded";
+      return value;
+    });
 
     return { fileId: file };
   },
@@ -183,15 +179,16 @@ export const uploadFile = async (
   hmacSecret: HmacSecret,
   masterKey: MasterKey,
   onDuplicate: () => Promise<boolean>,
-): 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(
@@ -200,22 +197,30 @@ 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;
     }
 
     const {
+      dataKey,
       dataKeyWrapped,
       dataKeyVersion,
       fileType,
       fileEncrypted,
       fileEncryptedHash,
       nameEncrypted,
+      createdAt,
       createdAtEncrypted,
       lastModifiedAtEncrypted,
       thumbnail,
-    } = await encryptFile(state, file, fileBuffer, masterKey);
+    } = await encryptFile(status, file, fileBuffer, masterKey);
 
     const form = new FormData();
     form.set(
@@ -253,10 +258,22 @@ export const uploadFile = async (
       thumbnailForm.set("content", new Blob([thumbnail.ciphertext]));
     }
 
-    const { fileId } = await requestFileUpload(state, form, thumbnailForm);
-    return { fileId, fileBuffer, thumbnailBuffer: thumbnail?.plaintext };
+    const { fileId } = await requestFileUpload(status, form, thumbnailForm);
+    return {
+      fileId,
+      fileDataKey: dataKey,
+      fileDataKeyVersion: dataKeyVersion,
+      fileType,
+      fileEncryptedIv: fileEncrypted.iv,
+      fileCreatedAt: createdAt,
+      fileBuffer,
+      thumbnailBuffer: thumbnail?.plaintext,
+    };
   } catch (e) {
-    state.status = "error";
+    status.update((value) => {
+      value.status = "error";
+      return value;
+    });
     throw e;
   }
 };

src/lib/modules/filesystem/category.ts

@@ -1,104 +0,0 @@
-import * as IndexedDB from "$lib/indexedDB";
-import { trpc, isTRPCClientError } from "$trpc/client";
-import { FilesystemCache, decryptFileMetadata, decryptCategoryMetadata } from "./internal.svelte";
-import type { CategoryInfo } from "./types";
-
-const cache = new FilesystemCache<CategoryId, CategoryInfo, Partial<CategoryInfo>>();
-
-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, subCategories };
-  } else if (category) {
-    return {
-      id,
-      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 });
-    const [subCategories, files] = await Promise.all([
-      Promise.all(
-        subCategoriesRaw.map(async (category) => ({
-          id: category.id,
-          ...(await decryptCategoryMetadata(category, masterKey)),
-        })),
-      ),
-      filesRaw
-        ? Promise.all(
-            filesRaw.map(async (file) => ({
-              id: file.id,
-              contentType: file.contentType,
-              isRecursive: file.isRecursive,
-              ...(await decryptFileMetadata(file, masterKey)),
-            })),
-          )
-        : undefined,
-    ]);
-
-    if (id === "root") {
-      return { id, subCategories };
-    } else {
-      return {
-        id,
-        subCategories,
-        files,
-        ...(await decryptCategoryMetadata(metadata!, masterKey)),
-      };
-    }
-  } catch (e) {
-    if (isTRPCClientError(e) && e.data?.code === "NOT_FOUND") {
-      cache.delete(id);
-      await IndexedDB.deleteCategoryInfo(id as number);
-      return;
-    }
-    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

@@ -1,74 +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 { DirectoryInfo } from "./types";
-
-const cache = new FilesystemCache<DirectoryId, DirectoryInfo>();
-
-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, subDirectories, files };
-  } else if (directory) {
-    return { id, 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 [subDirectories, files] = await Promise.all([
-      Promise.all(
-        subDirectoriesRaw.map(async (directory) => ({
-          id: directory.id,
-          ...(await decryptDirectoryMetadata(directory, masterKey)),
-        })),
-      ),
-      Promise.all(
-        filesRaw.map(async (file) => ({
-          id: file.id,
-          contentType: file.contentType,
-          ...(await decryptFileMetadata(file, masterKey)),
-        })),
-      ),
-    ]);
-
-    if (id === "root") {
-      return { id, subDirectories, files };
-    } else {
-      return {
-        id,
-        parentId: metadata!.parent,
-        subDirectories,
-        files,
-        ...(await decryptDirectoryMetadata(metadata!, masterKey)),
-      };
-    }
-  } catch (e) {
-    if (isTRPCClientError(e) && e.data?.code === "NOT_FOUND") {
-      cache.delete(id);
-      await IndexedDB.deleteDirectoryInfo(id as number);
-      return;
-    }
-    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

@@ -1,70 +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 { FileInfo } from "./types";
-
-const cache = new FilesystemCache<number, FileInfo>();
-
-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,
-      parentId: file.parentId,
-      contentType: file.contentType,
-      name: file.name,
-      createdAt: file.createdAt,
-      lastModifiedAt: file.lastModifiedAt,
-      categories: categories!.filter((category) => !!category),
-    };
-  }
-};
-
-const fetchFromServer = async (id: number, masterKey: CryptoKey) => {
-  try {
-    const { categories: categoriesRaw, ...metadata } = await trpc().file.get.query({ id });
-    const [categories] = await Promise.all([
-      Promise.all(
-        categoriesRaw.map(async (category) => ({
-          id: category.id,
-          ...(await decryptCategoryMetadata(category, masterKey)),
-        })),
-      ),
-    ]);
-
-    return {
-      id,
-      parentId: metadata.parent,
-      contentType: metadata.contentType,
-      contentIv: metadata.contentIv,
-      categories,
-      ...(await decryptFileMetadata(metadata, masterKey)),
-    };
-  } catch (e) {
-    if (isTRPCClientError(e) && e.data?.code === "NOT_FOUND") {
-      cache.delete(id);
-      await IndexedDB.deleteFileInfo(id);
-      return;
-    }
-    throw e;
-  }
-};
-
-export const getFileInfo = async (id: number, masterKey: CryptoKey) => {
-  return await cache.get(id, (isInitial, resolve) =>
-    monotonicResolve(
-      [isInitial && fetchFromIndexedDB(id), fetchFromServer(id, masterKey)],
-      resolve,
-    ),
-  );
-};

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

@@ -1,86 +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;
-
-      let 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;
-  }
-
-  delete(key: K) {
-    this.map.delete(key);
-  }
-}
-
-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

@@ -1,61 +0,0 @@
-export type DataKey = { key: CryptoKey; version: Date };
-
-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 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 };
-
-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"
->;

src/lib/modules/filesystem2/category.ts

@@ -0,0 +1,294 @@
+import { useQueryClient, createQuery, createMutation } from "@tanstack/svelte-query";
+import { callGetApi, callPostApi } from "$lib/hooks";
+import {
+  getCategoryInfos as getCategoryInfosFromIndexedDB,
+  getCategoryInfo as getCategoryInfoFromIndexedDB,
+  storeCategoryInfo,
+  updateCategoryInfo,
+  deleteCategoryInfo,
+  type CategoryId,
+} from "$lib/indexedDB";
+import {
+  generateDataKey,
+  wrapDataKey,
+  unwrapDataKey,
+  encryptString,
+  decryptString,
+} from "$lib/modules/crypto";
+import type {
+  CategoryInfoResponse,
+  CategoryFileListResponse,
+  CategoryRenameRequest,
+  CategoryCreateRequest,
+  CategoryCreateResponse,
+} from "$lib/server/schemas";
+import type { MasterKey } from "$lib/stores";
+
+export type CategoryInfo =
+  | {
+      id: "root";
+      dataKey?: undefined;
+      dataKeyVersion?: undefined;
+      name?: undefined;
+      subCategoryIds: number[];
+      files?: undefined;
+      isFileRecursive?: undefined;
+    }
+  | {
+      id: number;
+      dataKey?: CryptoKey;
+      dataKeyVersion?: Date;
+      name: string;
+      subCategoryIds: number[];
+      files: { id: number; isRecursive: boolean }[];
+      isFileRecursive: boolean;
+    };
+export type SubCategoryInfo = CategoryInfo & { id: number };
+
+let temporaryIdCounter = -1;
+
+const getInitialCategoryInfo = async (id: CategoryId) => {
+  const [category, subCategories] = await Promise.all([
+    id !== "root" ? getCategoryInfoFromIndexedDB(id) : undefined,
+    getCategoryInfosFromIndexedDB(id),
+  ]);
+  const subCategoryIds = subCategories.map(({ id }) => id);
+
+  if (id === "root") {
+    return { id, subCategoryIds };
+  } else if (category) {
+    return {
+      id,
+      name: category.name,
+      subCategoryIds,
+      files: category.files,
+      isFileRecursive: category.isFileRecursive,
+    };
+  }
+  return undefined;
+};
+
+export const getCategoryInfo = (id: CategoryId, masterKey: CryptoKey) => {
+  return createQuery<CategoryInfo>({
+    queryKey: ["category", id],
+    queryFn: async ({ client, signal }) => {
+      if (!client.getQueryData<CategoryInfo>(["category", id])) {
+        const initialInfo = await getInitialCategoryInfo(id);
+        if (initialInfo) {
+          setTimeout(() => client.invalidateQueries({ queryKey: ["category", id] }), 0);
+          return initialInfo;
+        }
+      }
+
+      const res = await callGetApi(`/api/category/${id}`, { signal }); // TODO: 404
+      const { metadata, subCategories }: CategoryInfoResponse = await res.json();
+
+      if (id === "root") {
+        return { id, subCategoryIds: subCategories };
+      } else {
+        const { dataKey } = await unwrapDataKey(metadata!.dek, masterKey);
+        const name = await decryptString(metadata!.name, metadata!.nameIv, dataKey);
+
+        const res = await callGetApi(`/api/category/${id}/file/list?recurse=true`); // TODO: Error Handling
+        const { files }: CategoryFileListResponse = await res.json();
+        const filesMapped = files.map(({ file, isRecursive }) => ({ id: file, isRecursive }));
+
+        const prevInfo = client.getQueryData<CategoryInfo>(["category", id]);
+        await storeCategoryInfo({
+          id,
+          parentId: metadata!.parent,
+          name,
+          files: filesMapped,
+          isFileRecursive: prevInfo?.isFileRecursive ?? false,
+        });
+        return {
+          id,
+          dataKey,
+          dataKeyVersion: new Date(metadata!.dekVersion),
+          name,
+          subCategoryIds: subCategories,
+          files: filesMapped,
+          isFileRecursive: prevInfo?.isFileRecursive ?? false,
+        };
+      }
+    },
+    staleTime: Infinity,
+  });
+};
+
+export type CategoryInfoStore = ReturnType<typeof getCategoryInfo>;
+
+export const useCategoryCreation = (parentId: CategoryId, masterKey: MasterKey) => {
+  const queryClient = useQueryClient();
+  return createMutation<void, Error, { name: string }, { tempId: number }>({
+    mutationFn: async ({ name }) => {
+      const { dataKey, dataKeyVersion } = await generateDataKey();
+      const nameEncrypted = await encryptString(name, dataKey);
+
+      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,
+      });
+      if (!res.ok) throw new Error("Failed to create category");
+
+      const { category: id }: CategoryCreateResponse = await res.json();
+      queryClient.setQueryData<CategoryInfo>(["category", id], {
+        id,
+        name,
+        dataKey,
+        dataKeyVersion,
+        subCategoryIds: [],
+        files: [],
+        isFileRecursive: false,
+      });
+      await storeCategoryInfo({ id, parentId, name, files: [], isFileRecursive: false });
+    },
+    onMutate: async ({ name }) => {
+      const tempId = temporaryIdCounter--;
+      queryClient.setQueryData<CategoryInfo>(["category", tempId], {
+        id: tempId,
+        name,
+        subCategoryIds: [],
+        files: [],
+        isFileRecursive: false,
+      });
+
+      await queryClient.cancelQueries({ queryKey: ["category", parentId] });
+      queryClient.setQueryData<CategoryInfo>(["category", parentId], (prevParentInfo) => {
+        if (!prevParentInfo) return;
+        return {
+          ...prevParentInfo,
+          subCategoryIds: [...prevParentInfo.subCategoryIds, tempId],
+        };
+      });
+
+      return { tempId };
+    },
+    onError: (_error, _variables, context) => {
+      if (context) {
+        queryClient.setQueryData<CategoryInfo>(["category", parentId], (prevParentInfo) => {
+          if (!prevParentInfo) return;
+          return {
+            ...prevParentInfo,
+            subCategoryIds: prevParentInfo.subCategoryIds.filter((id) => id !== context.tempId),
+          };
+        });
+      }
+    },
+    onSettled: () => {
+      queryClient.invalidateQueries({ queryKey: ["category", parentId] });
+    },
+  });
+};
+
+export const useCategoryRename = () => {
+  const queryClient = useQueryClient();
+  return createMutation<
+    void,
+    Error,
+    {
+      id: number;
+      dataKey: CryptoKey;
+      dataKeyVersion: Date;
+      newName: string;
+    },
+    { oldName: string | undefined }
+  >({
+    mutationFn: async ({ id, dataKey, dataKeyVersion, newName }) => {
+      const newNameEncrypted = await encryptString(newName, dataKey);
+      const res = await callPostApi<CategoryRenameRequest>(`/api/category/${id}/rename`, {
+        dekVersion: dataKeyVersion.toISOString(),
+        name: newNameEncrypted.ciphertext,
+        nameIv: newNameEncrypted.iv,
+      });
+      if (!res.ok) throw new Error("Failed to rename category");
+
+      await updateCategoryInfo(id, { name: newName });
+    },
+    onMutate: async ({ id, newName }) => {
+      await queryClient.cancelQueries({ queryKey: ["category", id] });
+
+      const prevInfo = queryClient.getQueryData<SubCategoryInfo>(["category", id]);
+      if (prevInfo) {
+        queryClient.setQueryData<CategoryInfo>(["category", id], {
+          ...prevInfo,
+          name: newName,
+        });
+      }
+
+      return { oldName: prevInfo?.name };
+    },
+    onError: (_error, { id }, context) => {
+      if (context?.oldName) {
+        queryClient.setQueryData<SubCategoryInfo>(["category", id], (prevInfo) => {
+          if (!prevInfo) return;
+          return { ...prevInfo, name: context.oldName! };
+        });
+      }
+    },
+    onSettled: (_data, _error, { id }) => {
+      queryClient.invalidateQueries({ queryKey: ["category", id] });
+    },
+  });
+};
+
+export const useCategoryDeletion = (parentId: CategoryId) => {
+  const queryClient = useQueryClient();
+  return createMutation<void, Error, { id: number }, {}>({
+    mutationFn: async ({ id }) => {
+      const res = await callPostApi(`/api/category/${id}/delete`);
+      if (!res.ok) throw new Error("Failed to delete category");
+
+      await deleteCategoryInfo(id);
+
+      // TODO: Update FileInfo
+    },
+    onMutate: async ({ id }) => {
+      await queryClient.cancelQueries({ queryKey: ["category", parentId] });
+      queryClient.setQueryData<CategoryInfo>(["category", parentId], (prevParentInfo) => {
+        if (!prevParentInfo) return;
+        return {
+          ...prevParentInfo,
+          subCategoryIds: prevParentInfo.subCategoryIds.filter((categoryId) => categoryId !== id),
+        };
+      });
+      return {};
+    },
+    onError: (_error, { id }, context) => {
+      if (context) {
+        queryClient.setQueryData<CategoryInfo>(["category", parentId], (prevParentInfo) => {
+          if (!prevParentInfo) return;
+          return {
+            ...prevParentInfo,
+            subCategoryIds: [...prevParentInfo.subCategoryIds, id],
+          };
+        });
+      }
+    },
+    onSettled: () => {
+      queryClient.invalidateQueries({ queryKey: ["category", parentId] });
+    },
+  });
+};
+
+export const useCategoryFileRecursionToggle = () => {
+  const queryClient = useQueryClient();
+  return createMutation<void, Error, { id: number; isFileRecursive: boolean }, {}>({
+    mutationFn: async ({ id, isFileRecursive }) => {
+      await updateCategoryInfo(id, { isFileRecursive });
+    },
+    onMutate: async ({ id, isFileRecursive }) => {
+      const prevInfo = queryClient.getQueryData<SubCategoryInfo>(["category", id]);
+      if (prevInfo) {
+        queryClient.setQueryData<CategoryInfo>(["category", id], {
+          ...prevInfo,
+          isFileRecursive,
+        });
+      }
+    },
+  });
+};

src/lib/modules/filesystem2/directory.ts

@@ -0,0 +1,267 @@
+import { useQueryClient, createQuery, createMutation } from "@tanstack/svelte-query";
+import { callGetApi, callPostApi } from "$lib/hooks";
+import {
+  getDirectoryInfos as getDirectoryInfosFromIndexedDB,
+  getDirectoryInfo as getDirectoryInfoFromIndexedDB,
+  storeDirectoryInfo,
+  updateDirectoryInfo,
+  deleteDirectoryInfo,
+  getFileInfos as getFileInfosFromIndexedDB,
+  deleteFileInfo,
+  type DirectoryId,
+} from "$lib/indexedDB";
+import {
+  generateDataKey,
+  wrapDataKey,
+  unwrapDataKey,
+  encryptString,
+  decryptString,
+} from "$lib/modules/crypto";
+import type {
+  DirectoryInfoResponse,
+  DirectoryDeleteResponse,
+  DirectoryRenameRequest,
+  DirectoryCreateRequest,
+  DirectoryCreateResponse,
+} from "$lib/server/schemas";
+import type { MasterKey } from "$lib/stores";
+
+export type DirectoryInfo =
+  | {
+      id: "root";
+      dataKey?: undefined;
+      dataKeyVersion?: undefined;
+      name?: undefined;
+      subDirectoryIds: number[];
+      fileIds: number[];
+    }
+  | {
+      id: number;
+      dataKey?: CryptoKey;
+      dataKeyVersion?: Date;
+      name: string;
+      subDirectoryIds: number[];
+      fileIds: number[];
+    };
+export type SubDirectoryInfo = DirectoryInfo & { id: number };
+
+let temporaryIdCounter = -1;
+
+const getInitialDirectoryInfo = async (id: DirectoryId) => {
+  const [directory, subDirectories, files] = await Promise.all([
+    id !== "root" ? getDirectoryInfoFromIndexedDB(id) : undefined,
+    getDirectoryInfosFromIndexedDB(id),
+    getFileInfosFromIndexedDB(id),
+  ]);
+  const subDirectoryIds = subDirectories.map(({ id }) => id);
+  const fileIds = files.map(({ id }) => id);
+
+  if (id === "root") {
+    return { id, subDirectoryIds, fileIds };
+  } else if (directory) {
+    return { id, name: directory.name, subDirectoryIds, fileIds };
+  }
+  return undefined;
+};
+
+export const getDirectoryInfo = (id: DirectoryId, masterKey: CryptoKey) => {
+  return createQuery<DirectoryInfo>({
+    queryKey: ["directory", id],
+    queryFn: async ({ client, signal }) => {
+      if (!client.getQueryData(["directory", id])) {
+        const initialInfo = await getInitialDirectoryInfo(id);
+        if (initialInfo) {
+          setTimeout(() => client.invalidateQueries({ queryKey: ["directory", id] }), 0);
+          return initialInfo;
+        }
+      }
+
+      const res = await callGetApi(`/api/directory/${id}`, { signal }); // TODO: 404
+      const {
+        metadata,
+        subDirectories: subDirectoryIds,
+        files: fileIds,
+      }: DirectoryInfoResponse = await res.json();
+
+      if (id === "root") {
+        return { id, subDirectoryIds, fileIds };
+      } else {
+        const { dataKey } = await unwrapDataKey(metadata!.dek, masterKey);
+        const name = await decryptString(metadata!.name, metadata!.nameIv, dataKey);
+        await storeDirectoryInfo({ id, parentId: metadata!.parent, name });
+        return {
+          id,
+          dataKey,
+          dataKeyVersion: new Date(metadata!.dekVersion),
+          name,
+          subDirectoryIds,
+          fileIds,
+        };
+      }
+    },
+    staleTime: Infinity,
+  });
+};
+
+export type DirectoryInfoStore = ReturnType<typeof getDirectoryInfo>;
+
+export const useDirectoryCreation = (parentId: DirectoryId, masterKey: MasterKey) => {
+  const queryClient = useQueryClient();
+  return createMutation<void, Error, { name: string }, { tempId: number }>({
+    mutationFn: async ({ name }) => {
+      const { dataKey, dataKeyVersion } = await generateDataKey();
+      const nameEncrypted = await encryptString(name, dataKey);
+
+      const res = await callPostApi<DirectoryCreateRequest>(`/api/directory/create`, {
+        parent: parentId,
+        mekVersion: masterKey.version,
+        dek: await wrapDataKey(dataKey, masterKey.key),
+        dekVersion: dataKeyVersion.toISOString(),
+        name: nameEncrypted.ciphertext,
+        nameIv: nameEncrypted.iv,
+      });
+      if (!res.ok) throw new Error("Failed to create directory");
+
+      const { directory: id }: DirectoryCreateResponse = await res.json();
+      queryClient.setQueryData<DirectoryInfo>(["directory", id], {
+        id,
+        name,
+        dataKey,
+        dataKeyVersion,
+        subDirectoryIds: [],
+        fileIds: [],
+      });
+      await storeDirectoryInfo({ id, parentId, name });
+    },
+    onMutate: async ({ name }) => {
+      const tempId = temporaryIdCounter--;
+      queryClient.setQueryData<DirectoryInfo>(["directory", tempId], {
+        id: tempId,
+        name,
+        subDirectoryIds: [],
+        fileIds: [],
+      });
+
+      await queryClient.cancelQueries({ queryKey: ["directory", parentId] });
+      queryClient.setQueryData<DirectoryInfo>(["directory", parentId], (prevParentInfo) => {
+        if (!prevParentInfo) return undefined;
+        return {
+          ...prevParentInfo,
+          subDirectoryIds: [...prevParentInfo.subDirectoryIds, tempId],
+        };
+      });
+
+      return { tempId };
+    },
+    onError: (_error, _variables, context) => {
+      if (context) {
+        queryClient.setQueryData<DirectoryInfo>(["directory", parentId], (prevParentInfo) => {
+          if (!prevParentInfo) return undefined;
+          return {
+            ...prevParentInfo,
+            subDirectoryIds: prevParentInfo.subDirectoryIds.filter((id) => id !== context.tempId),
+          };
+        });
+      }
+    },
+    onSettled: () => {
+      queryClient.invalidateQueries({ queryKey: ["directory", parentId] });
+    },
+  });
+};
+
+export const useDirectoryRename = () => {
+  const queryClient = useQueryClient();
+  return createMutation<
+    void,
+    Error,
+    {
+      id: number;
+      dataKey: CryptoKey;
+      dataKeyVersion: Date;
+      newName: string;
+    },
+    { oldName: string | undefined }
+  >({
+    mutationFn: async ({ id, dataKey, dataKeyVersion, newName }) => {
+      const newNameEncrypted = await encryptString(newName, dataKey);
+      const res = await callPostApi<DirectoryRenameRequest>(`/api/directory/${id}/rename`, {
+        dekVersion: dataKeyVersion.toISOString(),
+        name: newNameEncrypted.ciphertext,
+        nameIv: newNameEncrypted.iv,
+      });
+      if (!res.ok) throw new Error("Failed to rename directory");
+
+      await updateDirectoryInfo(id, { name: newName });
+    },
+    onMutate: async ({ id, newName }) => {
+      await queryClient.cancelQueries({ queryKey: ["directory", id] });
+
+      const prevInfo = queryClient.getQueryData<SubDirectoryInfo>(["directory", id]);
+      if (prevInfo) {
+        queryClient.setQueryData<DirectoryInfo>(["directory", id], {
+          ...prevInfo,
+          name: newName,
+        });
+      }
+
+      return { oldName: prevInfo?.name };
+    },
+    onError: (_error, { id }, context) => {
+      if (context?.oldName) {
+        queryClient.setQueryData<SubDirectoryInfo>(["directory", id], (prevInfo) => {
+          if (!prevInfo) return undefined;
+          return { ...prevInfo, name: context.oldName! };
+        });
+      }
+    },
+    onSettled: (_data, _error, { id }) => {
+      queryClient.invalidateQueries({ queryKey: ["directory", id] });
+    },
+  });
+};
+
+export const useDirectoryDeletion = (parentId: DirectoryId) => {
+  const queryClient = useQueryClient();
+  return createMutation<{ deletedFiles: number[] }, Error, { id: number }, {}>({
+    mutationFn: async ({ id }) => {
+      const res = await callPostApi(`/api/directory/${id}/delete`);
+      if (!res.ok) throw new Error("Failed to delete directory");
+
+      const { deletedDirectories, deletedFiles }: DirectoryDeleteResponse = await res.json();
+      await Promise.all([
+        ...deletedDirectories.map(deleteDirectoryInfo),
+        ...deletedFiles.map(deleteFileInfo),
+      ]);
+
+      return { deletedFiles };
+    },
+    onMutate: async ({ id }) => {
+      await queryClient.cancelQueries({ queryKey: ["directory", parentId] });
+      queryClient.setQueryData<DirectoryInfo>(["directory", parentId], (prevParentInfo) => {
+        if (!prevParentInfo) return undefined;
+        return {
+          ...prevParentInfo,
+          subDirectoryIds: prevParentInfo.subDirectoryIds.filter(
+            (subDirectoryId) => subDirectoryId !== id,
+          ),
+        };
+      });
+      return {};
+    },
+    onError: (_error, { id }, context) => {
+      if (context) {
+        queryClient.setQueryData<DirectoryInfo>(["directory", parentId], (prevParentInfo) => {
+          if (!prevParentInfo) return undefined;
+          return {
+            ...prevParentInfo,
+            subDirectoryIds: [...prevParentInfo.subDirectoryIds, id],
+          };
+        });
+      }
+    },
+    onSettled: () => {
+      queryClient.invalidateQueries({ queryKey: ["directory", parentId] });
+    },
+  });
+};

src/lib/modules/filesystem2/file.ts

@@ -0,0 +1,230 @@
+import { useQueryClient, createQuery, createMutation } from "@tanstack/svelte-query";
+import { callGetApi, callPostApi } from "$lib/hooks";
+import {
+  getFileInfo as getFileInfoFromIndexedDB,
+  storeFileInfo,
+  updateFileInfo,
+  deleteFileInfo,
+  type DirectoryId,
+} from "$lib/indexedDB";
+import { unwrapDataKey, encryptString, decryptString } from "$lib/modules/crypto";
+import { uploadFile } from "$lib/modules/file";
+import type { FileInfoResponse, FileRenameRequest } from "$lib/server/schemas";
+import type { MasterKey, HmacSecret } from "$lib/stores";
+import type { DirectoryInfo } from "./directory";
+
+export interface FileInfo {
+  id: number;
+  dataKey?: CryptoKey;
+  dataKeyVersion?: Date;
+  contentType: string;
+  contentIv?: string;
+  name: string;
+  createdAt?: Date;
+  lastModifiedAt: Date;
+  categoryIds: number[];
+}
+
+const decryptDate = async (ciphertext: string, iv: string, dataKey: CryptoKey) => {
+  return new Date(parseInt(await decryptString(ciphertext, iv, dataKey), 10));
+};
+
+export const getFileInfo = (id: number, masterKey: CryptoKey) => {
+  return createQuery<FileInfo>({
+    queryKey: ["file", id],
+    queryFn: async ({ client, signal }) => {
+      if (!client.getQueryData(["file", id])) {
+        const initialInfo = await getFileInfoFromIndexedDB(id);
+        if (initialInfo) {
+          setTimeout(() => client.invalidateQueries({ queryKey: ["file", id] }), 0);
+          return initialInfo;
+        }
+      }
+
+      const res = await callGetApi(`/api/file/${id}`, { signal }); // TODO: 404
+      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,
+      );
+
+      await storeFileInfo({
+        id,
+        parentId: metadata.parent,
+        name,
+        contentType: metadata.contentType,
+        createdAt,
+        lastModifiedAt,
+        categoryIds: metadata.categories,
+      });
+      return {
+        id,
+        dataKey,
+        dataKeyVersion: new Date(metadata.dekVersion),
+        contentType: metadata.contentType,
+        contentIv: metadata.contentIv,
+        name,
+        createdAt,
+        lastModifiedAt,
+        categoryIds: metadata.categories,
+      };
+    },
+    staleTime: Infinity,
+  });
+};
+
+export type FileInfoStore = ReturnType<typeof getFileInfo>;
+
+export const useFileUpload = (
+  parentId: DirectoryId,
+  masterKey: MasterKey,
+  hmacSecret: HmacSecret,
+) => {
+  const queryClient = useQueryClient();
+  return createMutation<
+    { fileId: number; fileBuffer: ArrayBuffer; thumbnailBuffer?: ArrayBuffer },
+    Error,
+    { file: File; onDuplicate: () => Promise<boolean> },
+    { tempId: number }
+  >({
+    mutationFn: async ({ file, onDuplicate }) => {
+      const res = await uploadFile(file, parentId, hmacSecret, masterKey, onDuplicate);
+      if (!res) throw new Error("Failed to upload file");
+
+      queryClient.setQueryData<FileInfo>(["file", res.fileId], {
+        id: res.fileId,
+        dataKey: res.fileDataKey,
+        dataKeyVersion: res.fileDataKeyVersion,
+        contentType: res.fileType,
+        contentIv: res.fileEncryptedIv,
+        name: file.name,
+        createdAt: res.fileCreatedAt,
+        lastModifiedAt: new Date(file.lastModified),
+        categoryIds: [],
+      });
+      await storeFileInfo({
+        id: res.fileId,
+        parentId,
+        name: file.name,
+        contentType: res.fileType,
+        createdAt: res.fileCreatedAt,
+        lastModifiedAt: new Date(file.lastModified),
+        categoryIds: [],
+      });
+      return {
+        fileId: res.fileId,
+        fileBuffer: res.fileBuffer,
+        thumbnailBuffer: res.thumbnailBuffer,
+      };
+    },
+    onSuccess: async ({ fileId }) => {
+      await queryClient.cancelQueries({ queryKey: ["directory", parentId] });
+      queryClient.setQueryData<DirectoryInfo>(["directory", parentId], (prevParentInfo) => {
+        if (!prevParentInfo) return undefined;
+        return {
+          ...prevParentInfo,
+          fileIds: [...prevParentInfo.fileIds, fileId],
+        };
+      });
+    },
+    onSettled: () => {
+      queryClient.invalidateQueries({ queryKey: ["directory", parentId] });
+    },
+  });
+};
+
+export const useFileRename = () => {
+  const queryClient = useQueryClient();
+  return createMutation<
+    void,
+    Error,
+    {
+      id: number;
+      dataKey: CryptoKey;
+      dataKeyVersion: Date;
+      newName: string;
+    },
+    { oldName: string | undefined }
+  >({
+    mutationFn: async ({ id, dataKey, dataKeyVersion, newName }) => {
+      const newNameEncrypted = await encryptString(newName, dataKey);
+      const res = await callPostApi<FileRenameRequest>(`/api/file/${id}/rename`, {
+        dekVersion: dataKeyVersion.toISOString(),
+        name: newNameEncrypted.ciphertext,
+        nameIv: newNameEncrypted.iv,
+      });
+      if (!res.ok) throw new Error("Failed to rename file");
+
+      await updateFileInfo(id, { name: newName });
+    },
+    onMutate: async ({ id, newName }) => {
+      await queryClient.cancelQueries({ queryKey: ["file", id] });
+
+      const prevInfo = queryClient.getQueryData<FileInfo>(["file", id]);
+      if (prevInfo) {
+        queryClient.setQueryData<FileInfo>(["file", id], {
+          ...prevInfo,
+          name: newName,
+        });
+      }
+
+      return { oldName: prevInfo?.name };
+    },
+    onError: (_error, { id }, context) => {
+      if (context?.oldName) {
+        queryClient.setQueryData<FileInfo>(["file", id], (prevInfo) => {
+          if (!prevInfo) return undefined;
+          return { ...prevInfo, name: context.oldName! };
+        });
+      }
+    },
+    onSettled: (_data, _error, { id }) => {
+      queryClient.invalidateQueries({ queryKey: ["file", id] });
+    },
+  });
+};
+
+export const useFileDeletion = (parentId: DirectoryId) => {
+  const queryClient = useQueryClient();
+  return createMutation<void, Error, { id: number }, {}>({
+    mutationFn: async ({ id }) => {
+      const res = await callPostApi(`/api/file/${id}/delete`);
+      if (!res.ok) throw new Error("Failed to delete file");
+
+      await deleteFileInfo(id);
+    },
+    onMutate: async ({ id }) => {
+      await queryClient.cancelQueries({ queryKey: ["directory", parentId] });
+      queryClient.setQueryData<DirectoryInfo>(["directory", parentId], (prevParentInfo) => {
+        if (!prevParentInfo) return undefined;
+        return {
+          ...prevParentInfo,
+          fileIds: prevParentInfo.fileIds.filter((fileId) => fileId !== id),
+        };
+      });
+      return {};
+    },
+    onError: (_error, { id }, context) => {
+      if (context) {
+        queryClient.setQueryData<DirectoryInfo>(["directory", parentId], (prevParentInfo) => {
+          if (!prevParentInfo) return undefined;
+          return {
+            ...prevParentInfo,
+            fileIds: [...prevParentInfo.fileIds, id],
+          };
+        });
+      }
+    },
+    onSettled: () => {
+      queryClient.invalidateQueries({ queryKey: ["directory", parentId] });
+    },
+  });
+};

src/lib/modules/filesystem2/index.ts

@@ -1,4 +1,3 @@
 export * from "./category";
 export * from "./directory";
 export * from "./file";
-export * from "./types";

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/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;
@@ -15,7 +17,7 @@ interface Category {
 export type NewCategory = Omit<Category, "id">;
 
 export const registerCategory = async (params: NewCategory) => {
-  await db.transaction().execute(async (trx) => {
+  return await db.transaction().execute(async (trx) => {
     const mek = await trx
       .selectFrom("master_encryption_key")
       .select("version")
@@ -49,6 +51,7 @@ export const registerCategory = async (params: NewCategory) => {
         new_name: params.encName,
       })
       .execute();
+    return { id: 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

@@ -1,9 +1,11 @@
-import { sql } from "kysely";
+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;
@@ -37,7 +39,7 @@ interface File {
 export type NewFile = Omit<File, "id">;
 
 export const registerDirectory = async (params: NewDirectory) => {
-  await db.transaction().execute(async (trx) => {
+  return await db.transaction().execute(async (trx) => {
     const mek = await trx
       .selectFrom("master_encryption_key")
       .select("version")
@@ -71,6 +73,7 @@ export const registerDirectory = async (params: NewDirectory) => {
         new_name: params.encName,
       })
       .execute();
+    return { id: directoryId };
   });
 };
 
@@ -178,7 +181,10 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
       };
       const unregisterDirectoryRecursively = async (
         directoryId: number,
-      ): Promise<{ id: number; path: string; thumbnailPath: string | null }[]> => {
+      ): Promise<{
+        subDirectories: { id: number }[];
+        files: { id: number; path: string; thumbnailPath: string | null }[];
+      }> => {
         const files = await unregisterFiles(directoryId);
         const subDirectories = await trx
           .selectFrom("directory")
@@ -186,7 +192,7 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
           .where("parent_id", "=", directoryId)
           .where("user_id", "=", userId)
           .execute();
-        const subDirectoryFilePaths = await Promise.all(
+        const subDirectoryEntries = await Promise.all(
           subDirectories.map(async ({ id }) => await unregisterDirectoryRecursively(id)),
         );
 
@@ -198,7 +204,12 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
         if (deleteRes.numDeletedRows === 0n) {
           throw new IntegrityError("Directory not found");
         }
-        return files.concat(...subDirectoryFilePaths);
+        return {
+          subDirectories: subDirectoryEntries
+            .flatMap(({ subDirectories }) => subDirectories)
+            .concat(subDirectories),
+          files: subDirectoryEntries.flatMap(({ files }) => files).concat(files),
+        };
       };
       return await unregisterDirectoryRecursively(directoryId);
     });
@@ -304,51 +315,39 @@ 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) => {
@@ -486,17 +485,10 @@ 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,
-  }));
+  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 +1,60 @@
 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>;
+
+export const categoryCreateResponse = z.object({
+  category: z.number().int().positive(),
+});
+export type CategoryCreateResponse = z.output<typeof categoryCreateResponse>;

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 +1,47 @@
 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({
+  deletedDirectories: z.number().int().positive().array(),
+  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>;
+
+export const directoryCreateResponse = z.object({
+  directory: z.number().int().positive(),
+});
+export type DirectoryCreateResponse = z.output<typeof directoryCreateResponse>;

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 +1,134 @@
+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 {
+    const { id } = await registerCategory(params);
+    return { id };
+  } 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 +1,98 @@
+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 { subDirectories, files } = await unregisterDirectory(userId, directoryId);
+    return {
+      directories: [...subDirectories.map(({ id }) => id), directoryId],
+      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 {
+    const { id } = await registerDirectory(params);
+    return { id };
+  } 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({
+  let res = await callPostApi<SessionUpgradeRequest>("/api/auth/upgradeSession", {
     encPubKey: encryptKeyBase64,
     sigPubKey: verifyKeyBase64,
-    }));
-  } catch (e) {
-    if (isTRPCClientError(e) && e.data?.code === "FORBIDDEN") {
-      return [false, "Unregistered client"] as const;
-    }
-    return [false] as const;
-  }
+  });
+  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({
+  res = await callPostApi<SessionUpgradeVerifyRequest>("/api/auth/upgradeSession/verify", {
     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;
+  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({
+  const res = await callPostApi<CategoryCreateRequest>("/api/category/create", {
     parent: parentId,
     mekVersion: masterKey.version,
     dek: await wrapDataKey(dataKey, masterKey.key),
-      dekVersion: dataKeyVersion,
+    dekVersion: dataKeyVersion.toISOString(),
     name: nameEncrypted.ciphertext,
     nameIv: nameEncrypted.iv,
   });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  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({
+  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);
-    await trpc().client.verify.mutate({
+
+  res = await callPostApi<ClientRegisterVerifyRequest>("/api/client/register/verify", {
     id,
     answerSig: encodeToBase64(answerSig),
   });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  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({
+  let res = await callPostApi<InitialMasterKeyRegisterRequest>("/api/mek/register/initial", {
     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;
+  if (!res.ok) {
+    return res.status === 403 || res.status === 409;
   }
 
-  try {
-    await trpc().hsk.registerInitial.mutate({
+  res = await callPostApi<InitialHmacSecretRegisterRequest>("/api/hsk/register/initial", {
     mekVersion: 1,
     hsk: hmacSecretWrapped,
   });
-    return true;
-  } catch {
-    // TODO: Error Handling
-    return false;
-  }
+  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/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 +1,14 @@
 <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 } from "$lib/modules/filesystem";
+  import { getCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem2";
+  import { getFileInfo } from "$lib/modules/filesystem2";
   import { captureVideoThumbnail } from "$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 {
@@ -17,44 +17,50 @@
     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<FileInfo | null> | undefined = $state();
-  let info: FileInfo | null = $state(null);
-  let downloadState = $derived(getFileDownloadState(data.id));
+  let info = $derived(getFileInfo(data.id, $masterKeyStore?.get(1)?.key!));
 
-  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 heicBlob: Blob | undefined = $state();
   let videoElement: HTMLVideoElement | undefined = $state();
 
   const updateViewer = async (buffer: ArrayBuffer, contentType: string) => {
-    fileBlob = new Blob([buffer], { type: contentType });
+    const fileBlob = new Blob([buffer], { type: contentType });
+    if (viewerType) {
       fileBlobUrl = URL.createObjectURL(fileBlob);
+      heicBlob = contentType === "image/heic" ? fileBlob : undefined;
+    }
     return fileBlob;
   };
 
   const convertHeicToJpeg = async () => {
-    if (fileBlob?.type !== "image/heic") return;
+    if (!heicBlob) return;
 
     URL.revokeObjectURL(fileBlobUrl!);
     fileBlobUrl = undefined;
 
     const { default: heic2any } = await import("heic2any");
     fileBlobUrl = URL.createObjectURL(
-      (await heic2any({ blob: fileBlob, toType: "image/jpeg" })) as Blob,
+      (await heic2any({ blob: heicBlob, toType: "image/jpeg" })) as Blob,
     );
+    heicBlob = undefined;
   };
 
   const updateThumbnail = async (dataKey: CryptoKey, dataKeyVersion: Date) => {
@@ -65,27 +71,23 @@
   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) => {
-      info = fileInfo;
-      return fileInfo;
-    });
-    info = null;
+    data.id;
     isDownloadRequested = false;
     viewerType = undefined;
   });
 
   $effect(() => {
-    if (info?.dataKey) {
-      const contentType = info.contentType;
+    if ($info.data?.dataKey && $info.data?.contentIv) {
+      const contentType = $info.data.contentType;
       if (contentType.startsWith("image")) {
         viewerType = "image";
       } else if (contentType.startsWith("video")) {
@@ -93,13 +95,13 @@
       }
 
       untrack(() => {
-        if (!downloadState && !isDownloadRequested) {
+        if (!downloadStatus && !isDownloadRequested) {
           isDownloadRequested = true;
-          requestFileDownload(data.id, info!.contentIv!, info!.dataKey!.key).then(
+          requestFileDownload(data.id, $info.data.contentIv!, $info.data.dataKey!).then(
             async (buffer) => {
               const blob = await updateViewer(buffer, contentType);
               if (!viewerType) {
-                FileSaver.saveAs(blob, info!.name);
+                FileSaver.saveAs(blob, $info.data.name);
               }
             },
           );
@@ -109,8 +111,10 @@
   });
 
   $effect(() => {
-    if (info && downloadState?.status === "decrypted") {
-      untrack(() => !isDownloadRequested && updateViewer(downloadState.result!, info!.contentType));
+    if ($info.status === "success" && $downloadStatus?.status === "decrypted") {
+      untrack(
+        () => !isDownloadRequested && updateViewer($downloadStatus.result!, $info.data.contentType),
+      );
     }
   });
 
@@ -121,33 +125,11 @@
   <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>
+<TopBar title={$info.data?.name} />
+<FullscreenDiv>
   <div class="space-y-4 pb-4">
-      {#if downloadState}
-        <DownloadStatus state={downloadState} />
-      {/if}
-      {#if viewerType}
+    <DownloadStatus status={downloadStatus} />
+    {#if $info.status === "success" && viewerType}
       <div class="flex w-full justify-center">
         {#snippet viewerLoading(message: string)}
           <p class="text-gray-500">{message}</p>
@@ -155,7 +137,7 @@
 
         {#if viewerType === "image"}
           {#if fileBlobUrl}
-              <img src={fileBlobUrl} alt={info.name} onerror={convertHeicToJpeg} />
+            <img src={fileBlobUrl} alt={$info.data.name} onerror={convertHeicToJpeg} />
           {:else}
             {@render viewerLoading("이미지를 불러오고 있어요.")}
           {/if}
@@ -166,7 +148,7 @@
               <video bind:this={videoElement} src={fileBlobUrl} controls muted></video>
               <IconEntryButton
                 icon={IconCamera}
-                  onclick={() => updateThumbnail(info?.dataKey?.key!, info?.dataKey?.version!)}
+                onclick={() => updateThumbnail($info.data.dataKey!, $info.data.dataKeyVersion!)}
                 class="w-full"
               >
                 이 장면을 썸네일로 설정하기
@@ -182,7 +164,7 @@
       <p class="text-lg font-bold">카테고리</p>
       <div class="space-y-1">
         <Categories
-            categories={info.categories}
+          categoryIds={$info.data?.categoryIds ?? []}
           categoryMenuIcon={IconClose}
           onCategoryClick={({ id }) => goto(`/category/${id}`)}
           onCategoryMenuClick={({ id }) => removeFromCategory(id)}
@@ -199,10 +181,9 @@
       </div>
     </div>
   </div>
-  </FullscreenDiv>
+</FullscreenDiv>
 
-  <AddToCategoryBottomSheet
+<AddToCategoryBottomSheet
   bind:isOpen={isAddToCategoryBottomSheetOpen}
   onAddToCategoryClick={addToCategory}
-  />
-{/if}
+/>

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

@@ -2,7 +2,7 @@
   import { BottomDiv, BottomSheet, Button, FullscreenDiv } from "$lib/components/atoms";
   import { SubCategories } from "$lib/components/molecules";
   import { CategoryCreateModal } from "$lib/components/organisms";
-  import { getCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem";
+  import { getCategoryInfo, type CategoryInfoStore } from "$lib/modules/filesystem2";
   import { masterKeyStore } from "$lib/stores";
   import { requestCategoryCreation } from "./service";
 
@@ -13,48 +13,46 @@
 
   let { onAddToCategoryClick, isOpen = $bindable() }: Props = $props();
 
-  let categoryInfoPromise: Promise<CategoryInfo | null> | undefined = $state();
+  let category: CategoryInfoStore | 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}
+{#if $category?.status === "success"}
   <BottomSheet bind:isOpen class="flex flex-col">
     <FullscreenDiv>
       <SubCategories
         class="py-4"
-          info={categoryInfo}
+        info={$category.data}
         onSubCategoryClick={({ id }) =>
-            (categoryInfoPromise = getCategoryInfo(id, $masterKeyStore?.get(1)?.key!))}
+          (category = getCategoryInfo(id, $masterKeyStore?.get(1)?.key!))}
         onSubCategoryCreateClick={() => (isCategoryCreateModalOpen = true)}
         subCategoryCreatePosition="top"
       />
-        {#if categoryInfo.id !== "root"}
+      {#if $category.data.id !== "root"}
         <BottomDiv>
-            <Button onclick={() => onAddToCategoryClick(categoryInfo.id)} class="w-full">
+          <Button onclick={() => onAddToCategoryClick($category.data.id as number)} class="w-full">
             이 카테고리에 추가하기
           </Button>
         </BottomDiv>
       {/if}
     </FullscreenDiv>
   </BottomSheet>
+{/if}
 
-    <CategoryCreateModal
+<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
+    if (await requestCategoryCreation(name, $category!.data!.id, $masterKeyStore?.get(1)!)) {
+      category = getCategoryInfo($category!.data!.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
       return true;
     }
     return false;
   }}
-    />
-  {/if}
-{/await}
+/>

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

@@ -1,17 +1,19 @@
 <script lang="ts">
+  import { get } from "svelte/store";
   import { FullscreenDiv } from "$lib/components/atoms";
   import { TopBar } from "$lib/components/molecules";
-  import { getDownloadingFiles, clearDownloadedFiles } from "$lib/modules/file";
-  import { getFileInfo } from "$lib/modules/filesystem";
-  import { masterKeyStore } from "$lib/stores";
+  import { fileDownloadStatusStore, isFileDownloading } from "$lib/stores";
   import File from "./File.svelte";
 
-  const downloadingFiles = getDownloadingFiles();
-  const filesPromise = $derived(
-    Promise.all(downloadingFiles.map(({ id }) => getFileInfo(id, $masterKeyStore?.get(1)?.key!))),
+  let downloadingFiles = $derived(
+    $fileDownloadStatusStore.filter((status) => isFileDownloading(get(status).status)),
   );
 
-  $effect(() => clearDownloadedFiles);
+  $effect(() => () => {
+    $fileDownloadStatusStore = $fileDownloadStatusStore.filter((status) =>
+      isFileDownloading(get(status).status),
+    );
+  });
 </script>
 
 <svelte:head>
@@ -20,11 +22,9 @@
 
 <TopBar />
 <FullscreenDiv>
-  {#await filesPromise then files}
   <div class="space-y-2 pb-4">
-      {#each files as file, index}
-        <File state={downloadingFiles[index]!} info={file} />
+    {#each downloadingFiles as status}
+      <File {status} />
     {/each}
   </div>
-  {/await}
 </FullscreenDiv>

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

@@ -1,7 +1,8 @@
 <script lang="ts">
-  import type { FileDownloadState } from "$lib/modules/file";
-  import type { FileInfo } from "$lib/modules/filesystem";
-  import { formatNetworkSpeed } from "$lib/utils";
+  import { get, type Writable } from "svelte/store";
+  import { getFileInfo } from "$lib/modules/filesystem2";
+  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 +12,52 @@
   import IconError from "~icons/material-symbols/error";
 
   interface Props {
-    info: FileInfo;
-    state: FileDownloadState;
+    status: Writable<FileDownloadStatus>;
   }
 
-  let { info, state }: Props = $props();
+  let { status }: Props = $props();
+
+  let fileInfo = $derived(getFileInfo(get(status).id, $masterKeyStore?.get(1)?.key!));
 </script>
 
-<div class="flex h-14 items-center gap-x-4 p-2">
+{#if $fileInfo.status === "success"}
+  <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"}
+      {#if $status.status === "download-pending"}
         <IconCloud />
-    {:else if state.status === "downloading"}
+      {:else if $status.status === "downloading"}
         <IconCloudDownload />
-    {:else if state.status === "decryption-pending"}
+      {:else if $status.status === "decryption-pending"}
         <IconLock />
-    {:else if state.status === "decrypting"}
+      {:else if $status.status === "decrypting"}
         <IconLockClock />
-    {:else if state.status === "decrypted"}
+      {:else if $status.status === "decrypted"}
         <IconCheckCircle class="text-green-500" />
-    {:else if state.status === "error"}
+      {:else if $status.status === "error"}
         <IconError class="text-red-500" />
       {/if}
     </div>
     <div class="flex-grow overflow-hidden">
-    <p title={info.name} class="truncate font-medium">
-      {info.name}
+      <p title={$fileInfo.data.name} class="truncate font-medium">
+        {$fileInfo.data.name}
       </p>
       <p class="text-xs text-gray-800">
-      {#if state.status === "download-pending"}
+        {#if $status.status === "download-pending"}
           다운로드를 기다리는 중
-      {:else if state.status === "downloading"}
+        {:else if $status.status === "downloading"}
           전송됨
-        {Math.floor((state.progress ?? 0) * 100)}% ·
-        {formatNetworkSpeed((state.rate ?? 0) * 8)}
-      {:else if state.status === "decryption-pending"}
+          {Math.floor(($status.progress ?? 0) * 100)}% ·
+          {formatNetworkSpeed(($status.rate ?? 0) * 8)}
+        {:else if $status.status === "decryption-pending"}
           복호화를 기다리는 중
-      {:else if state.status === "decrypting"}
+        {:else if $status.status === "decrypting"}
           복호화하는 중
-      {:else if state.status === "decrypted"}
+        {:else if $status.status === "decrypted"}
           다운로드 완료
-      {:else if state.status === "error"}
+        {: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

@@ -1,31 +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 { getFileInfo, type FileInfo } from "$lib/modules/filesystem";
-  import { masterKeyStore } from "$lib/stores";
-
-  let { data } = $props();
-
-  let files: (FileInfo | null)[] = $state([]);
-
-  onMount(async () => {
-    files = await Promise.all(
-      data.files.map((file) => getFileInfo(file, $masterKeyStore?.get(1)?.key!)),
-    );
-  });
-</script>
-
-<svelte:head>
-  <title>사진 및 동영상</title>
-</svelte:head>
-
-<TopBar title="사진 및 동영상" />
-<FullscreenDiv>
-  <Gallery
-    files={files.filter((file) => !!file)}
-    onFileClick={({ id }) => goto(`/file/${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

@@ -4,14 +4,14 @@
   import { TopBar } from "$lib/components/molecules";
   import type { FileCacheIndex } from "$lib/indexedDB";
   import { getFileCacheIndex, deleteFileCache as doDeleteFileCache } from "$lib/modules/file";
-  import { getFileInfo, type FileInfo } from "$lib/modules/filesystem";
+  import { getFileInfo, type FileInfoStore } from "$lib/modules/filesystem2";
+  import { formatFileSize } from "$lib/modules/util";
   import { masterKeyStore } from "$lib/stores";
-  import { formatFileSize } from "$lib/utils";
   import File from "./File.svelte";
 
   interface FileCache {
     index: FileCacheIndex;
-    fileInfo: FileInfo | null;
+    fileInfo: FileInfoStore;
   }
 
   let fileCache: FileCache[] | undefined = $state();
@@ -22,14 +22,13 @@
     fileCache = fileCache?.filter(({ index }) => index.fileId !== fileId);
   };
 
-  onMount(async () => {
-    fileCache = await Promise.all(
-      getFileCacheIndex().map(async (index) => ({
+  onMount(() => {
+    fileCache = getFileCacheIndex()
+      .map((index) => ({
         index,
-        fileInfo: await getFileInfo(index.fileId, $masterKeyStore?.get(1)?.key!),
-      })),
-    );
-    fileCache.sort((a, b) => a.index.lastRetrievedAt.getTime() - b.index.lastRetrievedAt.getTime());
+        fileInfo: getFileInfo(index.fileId, $masterKeyStore?.get(1)?.key!),
+      }))
+      .sort((a, b) => a.index.lastRetrievedAt.getTime() - b.index.lastRetrievedAt.getTime());
   });
 
   $effect(() => {

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

@@ -1,7 +1,7 @@
 <script lang="ts">
   import type { FileCacheIndex } from "$lib/indexedDB";
-  import type { SummarizedFileInfo } from "$lib/modules/filesystem";
-  import { formatDate, formatFileSize } from "$lib/utils";
+  import type { FileInfoStore } from "$lib/modules/filesystem2";
+  import { formatDate, formatFileSize } from "$lib/modules/util";
 
   import IconDraft from "~icons/material-symbols/draft";
   import IconScanDelete from "~icons/material-symbols/scan-delete";
@@ -9,7 +9,7 @@
 
   interface Props {
     index: FileCacheIndex;
-    info: SummarizedFileInfo | null;
+    info: FileInfoStore;
     onDeleteClick: (fileId: number) => void;
   }
 
@@ -17,7 +17,7 @@
 </script>
 
 <div class="flex h-14 items-center gap-x-4 p-2">
-  {#if info}
+  {#if $info}
     <div class="flex-shrink-0 rounded-full bg-blue-100 p-1 text-xl">
       <IconDraft class="text-blue-400" />
     </div>
@@ -27,8 +27,8 @@
     </div>
   {/if}
   <div class="flex-grow overflow-hidden">
-    {#if info}
-      <p title={info.name} class="truncate font-medium">{info.name}</p>
+    {#if $info.status === "success"}
+      <p title={$info.data.name} class="truncate font-medium">{$info.data.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

@@ -5,7 +5,7 @@
   import { BottomDiv, Button, FullscreenDiv } from "$lib/components/atoms";
   import { IconEntryButton, TopBar } from "$lib/components/molecules";
   import { deleteAllFileThumbnailCaches } from "$lib/modules/file";
-  import { getFileInfo } from "$lib/modules/filesystem";
+  import { getFileInfo } from "$lib/modules/filesystem2";
   import { masterKeyStore } from "$lib/stores";
   import File from "./File.svelte";
   import {
@@ -20,20 +20,19 @@
 
   const generateAllThumbnails = () => {
     persistentStates.files.forEach(({ info }) => {
-      if (info) {
-        requestThumbnailGeneration(info);
+      const fileInfo = get(info);
+      if (fileInfo.data) {
+        requestThumbnailGeneration(fileInfo.data);
       }
     });
   };
 
-  onMount(async () => {
-    persistentStates.files = await Promise.all(
-      data.files.map(async (fileId) => ({
+  onMount(() => {
+    persistentStates.files = data.files.map((fileId) => ({
       id: fileId,
-        info: await getFileInfo(fileId, $masterKeyStore?.get(1)?.key!),
+      info: getFileInfo(fileId, $masterKeyStore?.get(1)?.key!),
       status: getGenerationStatus(fileId),
-      })),
-    );
+    }));
   });
 </script>
 

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

@@ -13,32 +13,34 @@
   import type { Writable } from "svelte/store";
   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 type { FileInfo, FileInfoStore } from "$lib/modules/filesystem2";
+  import { formatDateTime } from "$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: FileInfoStore;
+    onclick: (selectedFile: FileInfo) => void;
+    onGenerateThumbnailClick: (selectedFile: FileInfo) => void;
     generationStatus?: Writable<GenerationStatus>;
   }
 
   let { info, onclick, onGenerateThumbnailClick, generationStatus }: Props = $props();
 </script>
 
-<ActionEntryButton
+{#if $info.status === "success"}
+  <ActionEntryButton
     class="h-14"
-  onclick={() => onclick(info)}
+    onclick={() => onclick($info.data)}
     actionButtonIcon={!$generationStatus || $generationStatus === "error" ? IconCamera : undefined}
-  onActionButtonClick={() => onGenerateThumbnailClick(info)}
+    onActionButtonClick={() => onGenerateThumbnailClick($info.data)}
     actionButtonClass="text-gray-800"
->
+  >
     {@const subtext =
       $generationStatus && $generationStatus !== "uploaded"
         ? subtexts[$generationStatus]
-      : formatDateTime(info.createdAt ?? info.lastModifiedAt)}
-  <DirectoryEntryLabel type="file" name={info.name} {subtext} />
-</ActionEntryButton>
+        : formatDateTime($info.data.createdAt ?? $info.data.lastModifiedAt)}
+    <DirectoryEntryLabel type="file" name={$info.data.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 } from "$lib/modules/filesystem";
+import type { FileInfo, FileInfoStore } from "$lib/modules/filesystem2";
 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: FileInfo;
+  info: FileInfoStore;
   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

@@ -2,7 +2,7 @@
   import { goto } from "$app/navigation";
   import { TopBar } from "$lib/components/molecules";
   import { Category, CategoryCreateModal } from "$lib/components/organisms";
-  import { getCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem";
+  import { getCategoryInfo, useCategoryFileRecursionToggle } from "$lib/modules/filesystem2";
   import { masterKeyStore } from "$lib/stores";
   import CategoryDeleteModal from "./CategoryDeleteModal.svelte";
   import CategoryMenuBottomSheet from "./CategoryMenuBottomSheet.svelte";
@@ -18,7 +18,9 @@
   let { data } = $props();
   let context = createContext();
 
-  let infoPromise: Promise<CategoryInfo> | undefined = $state();
+  let info = $derived(getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!));
+  let toggleFileRecursion = useCategoryFileRecursionToggle();
+  let isFileRecursive = $derived($info.data?.isFileRecursive);
 
   let isCategoryCreateModalOpen = $state(false);
   let isCategoryMenuBottomSheetOpen = $state(false);
@@ -26,7 +28,9 @@
   let isCategoryDeleteModalOpen = $state(false);
 
   $effect(() => {
-    infoPromise = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!);
+    if (isFileRecursive !== undefined && $info.data?.isFileRecursive !== isFileRecursive) {
+      $toggleFileRecursion.mutate({ id: data.id as number, isFileRecursive });
+    }
   });
 </script>
 
@@ -34,19 +38,18 @@
   <title>카테고리</title>
 </svelte:head>
 
-{#await infoPromise then info}
-  {#if info}
-    {#if info.id !== "root"}
-      <TopBar title={info.name} />
-    {/if}
-    <div class="min-h-full bg-gray-100 pb-[5.5em]">
+{#if data.id !== "root"}
+  <TopBar title={$info.data?.name} />
+{/if}
+<div class="min-h-full bg-gray-100 pb-[5.5em]">
+  {#if $info.status === "success"}
     <Category
-        bind:isFileRecursive={info.isFileRecursive}
-        {info}
-        onFileClick={({ id }) => goto(`/file/${id}?from=category`)}
+      bind:isFileRecursive
+      info={$info.data}
+      onFileClick={({ id }) => goto(`/file/${id}`)}
       onFileRemoveClick={async ({ id }) => {
         await requestFileRemovalFromCategory(id, data.id as number);
-          infoPromise = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+        info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
       }}
       onSubCategoryClick={({ id }) => goto(`/category/${id}`)}
       onSubCategoryCreateClick={() => (isCategoryCreateModalOpen = true)}
@@ -55,20 +58,21 @@
         isCategoryMenuBottomSheetOpen = true;
       }}
     />
-    </div>
+  {/if}
+</div>
 
-    <CategoryCreateModal
+<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
+      info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
       return true;
     }
     return false;
   }}
-    />
+/>
 
-    <CategoryMenuBottomSheet
+<CategoryMenuBottomSheet
   bind:isOpen={isCategoryMenuBottomSheetOpen}
   onRenameClick={() => {
     isCategoryMenuBottomSheetOpen = false;
@@ -78,26 +82,24 @@
     isCategoryMenuBottomSheetOpen = false;
     isCategoryDeleteModalOpen = true;
   }}
-    />
-    <CategoryRenameModal
+/>
+<CategoryRenameModal
   bind:isOpen={isCategoryRenameModalOpen}
   onRenameClick={async (newName: string) => {
     if (await requestCategoryRename(context.selectedCategory!, newName)) {
-          infoPromise = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+      info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
       return true;
     }
     return false;
   }}
-    />
-    <CategoryDeleteModal
+/>
+<CategoryDeleteModal
   bind:isOpen={isCategoryDeleteModalOpen}
   onDeleteClick={async () => {
     if (await requestCategoryDeletion(context.selectedCategory!)) {
-          infoPromise = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+      info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
       return true;
     }
     return false;
   }}
-    />
-  {/if}
-{/await}
+/>

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 {