Merge pull request #10 from kmc7468/dev

v0.4.0

.dockerignore

@@ -1,6 +1,5 @@
 .git
 node_modules
-/Makefile
 
 # Output
 .output
@@ -11,16 +10,13 @@ node_modules
 /build
 /data
 /library
-/thumbnails
-/uploads
 
 # OS
 .DS_Store
 Thumbs.db
 
-# Editors
+# VSCode
 /.vscode
-/.idea
 
 # Env
 .env

.env.example

@@ -11,5 +11,3 @@ SESSION_EXPIRES=
 USER_CLIENT_CHALLENGE_EXPIRES=
 SESSION_UPGRADE_CHALLENGE_EXPIRES=
 LIBRARY_PATH=
-THUMBNAILS_PATH=
-UPLOADS_PATH=

.gitignore

@@ -9,16 +9,13 @@ node_modules
 /build
 /data
 /library
-/thumbnails
-/uploads
 
 # OS
 .DS_Store
 Thumbs.db
 
-# Editors
+# VSCode
 /.vscode
-/.idea
 
 # Env
 .env

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.dev.yaml

@@ -1,7 +1,7 @@
 services:
   database:
-    image: postgres:17
-    restart: always
+    image: postgres:17.2
+    restart: on-failure
     volumes:
       - database:/var/lib/postgresql/data
     environment:

docker-compose.yaml

@@ -1,14 +1,12 @@
 services:
   server:
     build: .
-    restart: unless-stopped
+    restart: on-failure
     depends_on:
-      database:
-        condition: service_healthy
+      - database
     user: ${CONTAINER_UID:-0}:${CONTAINER_GID:-0}
     volumes:
       - ./data/library:/app/data/library
-      - ./data/thumbnails:/app/data/thumbnails
     environment:
       # ArkVault
       - DATABASE_HOST=database
@@ -19,8 +17,6 @@ services:
       - USER_CLIENT_CHALLENGE_EXPIRES
       - SESSION_UPGRADE_CHALLENGE_EXPIRES
       - LIBRARY_PATH=/app/data/library
-      - THUMBNAILS_PATH=/app/data/thumbnails
-      - UPLOADS_PATH=/app/data/uploads
       # SvelteKit
       - ADDRESS_HEADER=${TRUST_PROXY:+X-Forwarded-For}
       - XFF_DEPTH=${TRUST_PROXY:-}
@@ -29,16 +25,11 @@ services:
       - ${PORT:-80}:3000
 
   database:
-    image: postgres:17-alpine
-    restart: unless-stopped
+    image: postgres:17.2-alpine
+    restart: on-failure
     user: ${CONTAINER_UID:-0}:${CONTAINER_GID:-0}
     volumes:
       - ./data/database:/var/lib/postgresql/data
     environment:
       - POSTGRES_USER=arkvault
       - POSTGRES_PASSWORD=${DATABASE_PASSWORD:?}
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER}"]
-      interval: 5s
-      timeout: 5s
-      retries: 5

eslint.config.js

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

package.json

@@ -1,7 +1,7 @@
 {
   "name": "arkvault",
   "private": true,
-  "version": "0.8.0",
+  "version": "0.4.0",
   "type": "module",
   "scripts": {
     "dev": "vite dev",
@@ -16,58 +16,52 @@
     "db:migrate": "kysely migrate"
   },
   "devDependencies": {
-    "@eslint/compat": "^2.0.1",
-    "@eslint/js": "^9.39.2",
-    "@iconify-json/material-symbols": "^1.2.51",
-    "@noble/hashes": "^2.0.1",
-    "@sveltejs/adapter-node": "^5.4.0",
-    "@sveltejs/kit": "^2.49.4",
-    "@sveltejs/vite-plugin-svelte": "^6.2.4",
-    "@tanstack/svelte-virtual": "^3.13.18",
-    "@trpc/client": "^11.8.1",
+    "@eslint/compat": "^1.2.4",
+    "@iconify-json/material-symbols": "^1.2.12",
+    "@sveltejs/adapter-node": "^5.2.11",
+    "@sveltejs/kit": "^2.15.2",
+    "@sveltejs/vite-plugin-svelte": "^4.0.4",
     "@types/file-saver": "^2.0.7",
     "@types/ms": "^0.7.34",
-    "@types/node-schedule": "^2.1.8",
-    "@types/pg": "^8.16.0",
-    "autoprefixer": "^10.4.23",
-    "axios": "^1.13.2",
-    "dexie": "^4.2.1",
-    "eslint": "^9.39.2",
-    "eslint-config-prettier": "^10.1.8",
-    "eslint-plugin-svelte": "^3.14.0",
-    "eslint-plugin-tailwindcss": "^3.18.2",
-    "exifreader": "^4.35.0",
+    "@types/node-schedule": "^2.1.7",
+    "@types/pg": "^8.11.10",
+    "autoprefixer": "^10.4.20",
+    "axios": "^1.7.9",
+    "dexie": "^4.0.10",
+    "eslint": "^9.17.0",
+    "eslint-config-prettier": "^9.1.0",
+    "eslint-plugin-svelte": "^2.46.1",
+    "eslint-plugin-tailwindcss": "^3.17.5",
+    "exifreader": "^4.26.0",
     "file-saver": "^2.0.5",
-    "globals": "^17.0.0",
+    "globals": "^15.14.0",
     "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": "^8.52.0",
-    "unplugin-icons": "^22.5.0",
-    "vite": "^7.3.1"
+    "kysely-ctl": "^0.10.1",
+    "mime": "^4.0.6",
+    "p-limit": "^6.2.0",
+    "prettier": "^3.4.2",
+    "prettier-plugin-svelte": "^3.3.2",
+    "prettier-plugin-tailwindcss": "^0.6.9",
+    "svelte": "^5.19.1",
+    "svelte-check": "^4.1.3",
+    "tailwindcss": "^3.4.17",
+    "typescript": "^5.7.3",
+    "typescript-eslint": "^8.19.1",
+    "unplugin-icons": "^0.22.0",
+    "vite": "^5.4.11"
   },
   "dependencies": {
-    "@trpc/server": "^11.8.1",
-    "argon2": "^0.44.0",
-    "kysely": "^0.28.9",
+    "@fastify/busboy": "^3.1.1",
+    "argon2": "^0.41.1",
+    "kysely": "^0.27.5",
     "ms": "^2.1.3",
     "node-schedule": "^2.1.1",
-    "pg": "^8.16.3",
-    "superjson": "^2.2.6",
-    "uuid": "^13.0.0",
-    "zod": "^4.3.5"
+    "pg": "^8.13.1",
+    "uuid": "^11.0.4",
+    "zod": "^3.24.1"
   },
   "engines": {
     "node": "^22.0.0",
-    "pnpm": "^10.0.0"
+    "pnpm": "^9.0.0"
   }
 }

src/hooks.client.ts

@@ -1,17 +1,9 @@
 import type { ClientInit } from "@sveltejs/kit";
 import { cleanupDanglingInfos, getClientKey, getMasterKeys, getHmacSecrets } from "$lib/indexedDB";
 import { prepareFileCache } from "$lib/modules/file";
+import { prepareOpfs } from "$lib/modules/opfs";
 import { clientKeyStore, masterKeyStore, hmacSecretStore } from "$lib/stores";
 
-const requestPersistentStorage = async () => {
-  const isPersistent = await navigator.storage.persist();
-  if (isPersistent) {
-    console.log("[ArkVault] Persistent storage granted.");
-  } else {
-    console.warn("[ArkVault] Persistent storage not granted.");
-  }
-};
-
 const prepareClientKeyStore = async () => {
   const [encryptKey, decryptKey, signKey, verifyKey] = await Promise.all([
     getClientKey("encrypt"),
@@ -40,11 +32,11 @@ const prepareHmacSecretStore = async () => {
 
 export const init: ClientInit = async () => {
   await Promise.all([
-    requestPersistentStorage(),
     prepareFileCache(),
     prepareClientKeyStore(),
     prepareMasterKeyStore(),
     prepareHmacSecretStore(),
+    prepareOpfs(),
   ]);
 
   cleanupDanglingInfos(); // Intended

src/hooks.server.ts

@@ -7,7 +7,6 @@ import {
   cleanupExpiredSessions,
   cleanupExpiredSessionUpgradeChallenges,
 } from "$lib/server/db/session";
-import { cleanupExpiredUploadSessions } from "$lib/server/services/upload";
 import { authenticate, setAgentInfo } from "$lib/server/middlewares";
 
 export const init: ServerInit = async () => {
@@ -17,7 +16,6 @@ export const init: ServerInit = async () => {
     cleanupExpiredUserClientChallenges();
     cleanupExpiredSessions();
     cleanupExpiredSessionUpgradeChallenges();
-    cleanupExpiredUploadSessions();
   });
 };
 

src/lib/components/atoms/RowVirtualizer.svelte

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

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

@@ -1,24 +0,0 @@
-<script lang="ts">
-  import { getFileThumbnail } from "$lib/modules/file";
-  import type { SummarizedFileInfo } from "$lib/modules/filesystem";
-
-  interface Props {
-    info: SummarizedFileInfo;
-    onclick?: (file: SummarizedFileInfo) => void;
-  }
-
-  let { info, onclick }: Props = $props();
-
-  let thumbnail = $derived(getFileThumbnail(info));
-</script>
-
-<button
-  onclick={onclick && (() => setTimeout(() => onclick(info), 100))}
-  class="aspect-square overflow-hidden rounded transition active:scale-95 active:brightness-90"
->
-  {#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}
-</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/divs/FullscreenDiv.svelte

@@ -1,15 +1,7 @@
 <script lang="ts">
-  import type { Snippet } from "svelte";
-  import type { ClassValue } from "svelte/elements";
-
-  interface Props {
-    children: Snippet;
-    class?: ClassValue;
-  }
-
-  let { children, class: className }: Props = $props();
+  let { children } = $props();
 </script>
 
-<div class={["flex flex-grow flex-col justify-between px-4", className]}>
+<div class="flex flex-grow flex-col justify-between px-4">
   {@render children()}
 </div>

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/ActionModal.svelte

@@ -12,7 +12,6 @@
     confirmText: string;
     isOpen: boolean;
     onbeforeclose?: () => void;
-    oncancel?: () => void;
     onConfirmClick: ConfirmHandler;
     title: string;
   }
@@ -23,7 +22,6 @@
     confirmText,
     isOpen = $bindable(),
     onbeforeclose,
-    oncancel,
     onConfirmClick,
     title,
   }: Props = $props();
@@ -33,11 +31,6 @@
     isOpen = false;
   };
 
-  const cancelAction = () => {
-    oncancel?.();
-    closeModal();
-  };
-
   const confirmAction = async () => {
     if ((await onConfirmClick()) !== false) {
       closeModal();
@@ -45,13 +38,13 @@
   };
 </script>
 
-<Modal bind:isOpen onclose={cancelAction} class="space-y-4">
+<Modal bind:isOpen onclose={closeModal} class="space-y-4">
   <div class="flex flex-col gap-y-2 break-keep">
     <p class="text-xl font-bold">{title}</p>
     {@render children()}
   </div>
   <div class="flex gap-x-2">
-    <Button color="gray" onclick={cancelAction} class="flex-1">{cancelText}</Button>
+    <Button color="gray" onclick={closeModal} class="flex-1">{cancelText}</Button>
     <Button onclick={confirmAction} class="flex-1">{confirmText}</Button>
   </div>
 </Modal>

src/lib/components/molecules/Categories.svelte

@@ -1,44 +0,0 @@
-<script module lang="ts">
-  import type { DataKey } from "$lib/modules/filesystem";
-
-  export interface SelectedCategory {
-    id: number;
-    dataKey?: DataKey;
-    name: string;
-  }
-</script>
-
-<script lang="ts">
-  import type { Component } from "svelte";
-  import type { SvelteHTMLElements } from "svelte/elements";
-  import { ActionEntryButton } from "$lib/components/atoms";
-  import { CategoryLabel } from "$lib/components/molecules";
-  import type { SubCategoryInfo } from "$lib/modules/filesystem";
-  import { sortEntries } from "$lib/utils";
-
-  interface Props {
-    categories: SubCategoryInfo[];
-    categoryMenuIcon?: Component<SvelteHTMLElements["svg"]>;
-    onCategoryClick: (category: SelectedCategory) => void;
-    onCategoryMenuClick?: (category: SelectedCategory) => void;
-  }
-
-  let { categories, categoryMenuIcon, onCategoryClick, onCategoryMenuClick }: Props = $props();
-
-  let categoriesWithName = $derived(sortEntries([...categories]));
-</script>
-
-{#if categoriesWithName.length > 0}
-  <div class="space-y-1">
-    {#each categoriesWithName as category (category.id)}
-      <ActionEntryButton
-        class="h-12"
-        onclick={() => onCategoryClick(category)}
-        actionButtonIcon={categoryMenuIcon}
-        onActionButtonClick={() => onCategoryMenuClick?.(category)}
-      >
-        <CategoryLabel name={category.name} />
-      </ActionEntryButton>
-    {/each}
-  </div>
-{/if}

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

@@ -0,0 +1,63 @@
+<script lang="ts">
+  import { untrack, type Component } from "svelte";
+  import type { SvelteHTMLElements } from "svelte/elements";
+  import { get, type Writable } from "svelte/store";
+  import type { CategoryInfo } from "$lib/modules/filesystem";
+  import { SortBy, sortEntries } from "$lib/modules/util";
+  import Category from "./Category.svelte";
+  import type { SelectedCategory } from "./service";
+
+  interface Props {
+    categories: Writable<CategoryInfo | null>[];
+    categoryMenuIcon?: Component<SvelteHTMLElements["svg"]>;
+    onCategoryClick: (category: SelectedCategory) => void;
+    onCategoryMenuClick?: (category: SelectedCategory) => void;
+    sortBy?: SortBy;
+  }
+
+  let {
+    categories,
+    categoryMenuIcon,
+    onCategoryClick,
+    onCategoryMenuClick,
+    sortBy = SortBy.NAME_ASC,
+  }: Props = $props();
+
+  let categoriesWithName: { name?: string; info: Writable<CategoryInfo | null> }[] = $state([]);
+
+  $effect(() => {
+    categoriesWithName = categories.map((category) => ({
+      name: get(category)?.name,
+      info: category,
+    }));
+
+    const sort = () => {
+      sortEntries(categoriesWithName, sortBy);
+    };
+    return untrack(() => {
+      sort();
+
+      const unsubscribes = categoriesWithName.map((category) =>
+        category.info.subscribe((value) => {
+          if (category.name === value?.name) return;
+          category.name = value?.name;
+          sort();
+        }),
+      );
+      return () => unsubscribes.forEach((unsubscribe) => unsubscribe());
+    });
+  });
+</script>
+
+{#if categoriesWithName.length > 0}
+  <div class="space-y-1">
+    {#each categoriesWithName as { info }}
+      <Category
+        {info}
+        menuIcon={categoryMenuIcon}
+        onclick={onCategoryClick}
+        onMenuClick={onCategoryMenuClick}
+      />
+    {/each}
+  </div>
+{/if}

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

@@ -0,0 +1,43 @@
+<script lang="ts">
+  import type { Component } from "svelte";
+  import type { SvelteHTMLElements } from "svelte/elements";
+  import type { Writable } from "svelte/store";
+  import { ActionEntryButton } from "$lib/components/atoms";
+  import { CategoryLabel } from "$lib/components/molecules";
+  import type { CategoryInfo } from "$lib/modules/filesystem";
+  import type { SelectedCategory } from "./service";
+
+  interface Props {
+    info: Writable<CategoryInfo | null>;
+    menuIcon?: Component<SvelteHTMLElements["svg"]>;
+    onclick: (category: SelectedCategory) => void;
+    onMenuClick?: (category: SelectedCategory) => void;
+  }
+
+  let { info, menuIcon, onclick, onMenuClick }: Props = $props();
+
+  const openCategory = () => {
+    const { id, dataKey, dataKeyVersion, name } = $info as CategoryInfo;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onclick({ id, dataKey, dataKeyVersion, name });
+  };
+
+  const openMenu = () => {
+    const { id, dataKey, dataKeyVersion, name } = $info as CategoryInfo;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onMenuClick!({ id, dataKey, dataKeyVersion, name });
+  };
+</script>
+
+{#if $info}
+  <ActionEntryButton
+    class="h-12"
+    onclick={openCategory}
+    actionButtonIcon={menuIcon}
+    onActionButtonClick={openMenu}
+  >
+    <CategoryLabel name={$info.name!} />
+  </ActionEntryButton>
+{/if}

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

@@ -0,0 +1,2 @@
+export { default } from "./Categories.svelte";
+export * from "./service";

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

@@ -0,0 +1,6 @@
+export interface SelectedCategory {
+  id: number;
+  dataKey: CryptoKey;
+  dataKeyVersion: Date;
+  name: string;
+}

src/lib/components/molecules/SubCategories.svelte

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

src/lib/components/molecules/index.ts

@@ -1,7 +1,7 @@
 export * from "./ActionModal.svelte";
 export { default as ActionModal } from "./ActionModal.svelte";
-export * from "./Categories.svelte";
-export { default as Categories } from "./Categories.svelte";
+export * from "./Categories";
+export { default as Categories } from "./Categories";
 export { default as IconEntryButton } from "./IconEntryButton.svelte";
 export * from "./labels";
 export { default as SubCategories } from "./SubCategories.svelte";

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 {
@@ -11,40 +10,19 @@
     name: string;
     subtext?: string;
     textClass?: ClassValue;
-    thumbnail?: string;
-    type: "directory" | "parent-directory" | "file";
+    type: "directory" | "file";
   }
 
-  let {
-    class: className,
-    name,
-    subtext,
-    textClass: textClassName,
-    thumbnail,
-    type,
-  }: Props = $props();
+  let { class: className, name, subtext, textClass: textClassName, type }: Props = $props();
 </script>
 
-{#snippet iconSnippet()}
-  <div class="flex h-10 w-10 items-center justify-center text-xl">
-    {#if thumbnail}
-      <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}
-  </div>
-{/snippet}
-
 {#snippet subtextSnippet()}
   {subtext}
 {/snippet}
 
 <IconLabel
-  {iconSnippet}
+  icon={type === "directory" ? IconFolder : IconDraft}
+  iconClass={type === "file" ? "text-blue-400" : undefined}
   subtext={subtext ? subtextSnippet : undefined}
   class={className}
   textClass={textClassName}

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

@@ -5,9 +5,8 @@
   interface Props {
     children: Snippet;
     class?: ClassValue;
-    icon?: Component<SvelteHTMLElements["svg"]>;
+    icon: Component<SvelteHTMLElements["svg"]>;
     iconClass?: ClassValue;
-    iconSnippet?: Snippet;
     subtext?: Snippet;
     textClass?: ClassValue;
   }
@@ -17,22 +16,15 @@
     class: className,
     icon: Icon,
     iconClass: iconClassName,
-    iconSnippet,
     subtext,
     textClass: textClassName,
   }: Props = $props();
 </script>
 
 <div class={["flex items-center gap-x-4", className]}>
-  {#if iconSnippet}
-    <div class={["flex-shrink-0", iconClassName]}>
-      {@render iconSnippet()}
-    </div>
-  {:else if Icon}
-    <div class={["flex-shrink-0 text-lg", iconClassName]}>
-      <Icon />
-    </div>
-  {/if}
+  <div class={["flex-shrink-0 text-lg", iconClassName]}>
+    <Icon />
+  </div>
   <div class="flex flex-grow flex-col overflow-x-hidden text-left">
     <p class={["truncate font-medium", textClassName]}>
       {@render children()}

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

@@ -0,0 +1,107 @@
+<script lang="ts">
+  import { untrack } from "svelte";
+  import { get, type Writable } from "svelte/store";
+  import { CheckBox } from "$lib/components/atoms";
+  import { SubCategories, type SelectedCategory } from "$lib/components/molecules";
+  import { getFileInfo, type FileInfo, type CategoryInfo } from "$lib/modules/filesystem";
+  import { SortBy, sortEntries } from "$lib/modules/util";
+  import { masterKeyStore } from "$lib/stores";
+  import File from "./File.svelte";
+  import type { SelectedFile } from "./service";
+
+  import IconMoreVert from "~icons/material-symbols/more-vert";
+
+  interface Props {
+    info: CategoryInfo;
+    onFileClick: (file: SelectedFile) => void;
+    onFileRemoveClick: (file: SelectedFile) => void;
+    onSubCategoryClick: (subCategory: SelectedCategory) => void;
+    onSubCategoryCreateClick: () => void;
+    onSubCategoryMenuClick: (subCategory: SelectedCategory) => void;
+    sortBy?: SortBy;
+    isFileRecursive: boolean;
+  }
+
+  let {
+    info,
+    onFileClick,
+    onFileRemoveClick,
+    onSubCategoryClick,
+    onSubCategoryCreateClick,
+    onSubCategoryMenuClick,
+    sortBy = SortBy.NAME_ASC,
+    isFileRecursive = $bindable(),
+  }: Props = $props();
+
+  let files: { name?: string; info: Writable<FileInfo | null>; isRecursive: boolean }[] = $state(
+    [],
+  );
+
+  $effect(() => {
+    files =
+      info.files
+        ?.filter(({ isRecursive }) => isFileRecursive || !isRecursive)
+        .map(({ id, isRecursive }) => {
+          const info = getFileInfo(id, $masterKeyStore?.get(1)?.key!);
+          return {
+            name: get(info)?.name,
+            info,
+            isRecursive,
+          };
+        }) ?? [];
+
+    const sort = () => {
+      sortEntries(files, sortBy);
+    };
+    return untrack(() => {
+      sort();
+
+      const unsubscribes = files.map((file) =>
+        file.info.subscribe((value) => {
+          if (file.name === value?.name) return;
+          file.name = value?.name;
+          sort();
+        }),
+      );
+      return () => unsubscribes.forEach((unsubscribe) => unsubscribe());
+    });
+  });
+</script>
+
+<div class="space-y-4">
+  <div class="space-y-4 bg-white p-4">
+    {#if info.id !== "root"}
+      <p class="text-lg font-bold text-gray-800">하위 카테고리</p>
+    {/if}
+    <SubCategories
+      {info}
+      {onSubCategoryClick}
+      {onSubCategoryCreateClick}
+      {onSubCategoryMenuClick}
+      subCategoryMenuIcon={IconMoreVert}
+    />
+  </div>
+  {#if info.id !== "root"}
+    <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>
+        <CheckBox bind:checked={isFileRecursive}>
+          <p class="font-medium">하위 카테고리의 파일</p>
+        </CheckBox>
+      </div>
+      <div class="space-y-1">
+        {#key info}
+          {#each files as { info, isRecursive }}
+            <File
+              {info}
+              onclick={onFileClick}
+              onRemoveClick={!isRecursive ? onFileRemoveClick : undefined}
+            />
+          {:else}
+            <p class="text-gray-500 text-center">이 카테고리에 추가된 파일이 없어요.</p>
+          {/each}
+        {/key}
+      </div>
+    </div>
+  {/if}
+</div>

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

@@ -0,0 +1,42 @@
+<script lang="ts">
+  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 type { SelectedFile } from "./service";
+
+  import IconClose from "~icons/material-symbols/close";
+
+  interface Props {
+    info: Writable<FileInfo | null>;
+    onclick: (selectedFile: SelectedFile) => void;
+    onRemoveClick?: (selectedFile: SelectedFile) => void;
+  }
+
+  let { info, onclick, onRemoveClick }: Props = $props();
+
+  const openFile = () => {
+    const { id, dataKey, dataKeyVersion, name } = $info as FileInfo;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onclick({ id, dataKey, dataKeyVersion, name });
+  };
+
+  const removeFile = () => {
+    const { id, dataKey, dataKeyVersion, name } = $info as FileInfo;
+    if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
+
+    onRemoveClick!({ id, dataKey, dataKeyVersion, name });
+  };
+</script>
+
+{#if $info}
+  <ActionEntryButton
+    class="h-12"
+    onclick={openFile}
+    actionButtonIcon={onRemoveClick && IconClose}
+    onActionButtonClick={removeFile}
+  >
+    <DirectoryEntryLabel type="file" name={$info.name} />
+  </ActionEntryButton>
+{/if}

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

@@ -0,0 +1,2 @@
+export { default } from "./Category.svelte";
+export * from "./service";

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

@@ -0,0 +1,6 @@
+export interface SelectedFile {
+  id: number;
+  dataKey: CryptoKey;
+  dataKeyVersion: Date;
+  name: string;
+}

src/lib/components/organisms/index.ts

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

src/lib/components/organisms/modals/ForceLoginModal.svelte

@@ -1,22 +0,0 @@
-<script lang="ts">
-  import { ActionModal } from "$lib/components/molecules";
-
-  interface Props {
-    isOpen: boolean;
-    oncancel?: () => void;
-    onLoginClick: () => void;
-  }
-
-  let { isOpen = $bindable(), oncancel, onLoginClick }: Props = $props();
-</script>
-
-<ActionModal
-  bind:isOpen
-  title="다른 디바이스에 이미 로그인되어 있어요."
-  cancelText="아니요"
-  {oncancel}
-  confirmText="네"
-  onConfirmClick={onLoginClick}
->
-  <p>다른 디바이스에서는 로그아웃하고, 이 디바이스에서 로그인할까요?</p>
-</ActionModal>

src/lib/components/organisms/modals/index.ts

@@ -1,4 +1,3 @@
 export { default as CategoryCreateModal } from "./CategoryCreateModal.svelte";
-export { default as ForceLoginModal } from "./ForceLoginModal.svelte";
 export { default as RenameModal } from "./RenameModal.svelte";
 export { default as TextInputModal } from "./TextInputModal.svelte";

src/lib/constants/index.ts

@@ -1,2 +0,0 @@
-export * from "./serviceWorker";
-export * from "./upload";

src/lib/constants/serviceWorker.ts

@@ -1 +0,0 @@
-export const DECRYPTED_FILE_URL_PREFIX = "/_internal/decryptedFile/";

src/lib/constants/upload.ts

@@ -1,6 +0,0 @@
-export const AES_GCM_IV_SIZE = 12;
-export const AES_GCM_TAG_SIZE = 16;
-export const ENCRYPTION_OVERHEAD = AES_GCM_IV_SIZE + AES_GCM_TAG_SIZE;
-
-export const CHUNK_SIZE = 4 * 1024 * 1024; // 4 MiB
-export const ENCRYPTED_CHUNK_SIZE = CHUNK_SIZE + ENCRYPTION_OVERHEAD;

src/lib/hooks/callApi.ts

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

src/lib/hooks/index.ts

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

src/lib/indexedDB/filesystem.ts

@@ -1,5 +1,7 @@
 import { Dexie, type EntityTable } from "dexie";
 
+export type DirectoryId = "root" | number;
+
 interface DirectoryInfo {
   id: number;
   parentId: DirectoryId;
@@ -13,15 +15,16 @@ interface FileInfo {
   contentType: string;
   createdAt?: Date;
   lastModifiedAt: Date;
-  categoryIds?: number[];
+  categoryIds: number[];
 }
 
+export type CategoryId = "root" | number;
+
 interface CategoryInfo {
   id: number;
   parentId: CategoryId;
   name: string;
-  files?: { id: number; isRecursive: boolean }[];
-  isFileRecursive?: boolean;
+  files: { id: number; isRecursive: boolean }[];
 }
 
 const filesystem = new Dexie("filesystem") as Dexie & {
@@ -30,21 +33,11 @@ const filesystem = new Dexie("filesystem") as Dexie & {
   category: EntityTable<CategoryInfo, "id">;
 };
 
-filesystem
-  .version(3)
-  .stores({
-    directory: "id, parentId",
-    file: "id, parentId",
-    category: "id, parentId",
-  })
-  .upgrade(async (trx) => {
-    await trx
-      .table("category")
-      .toCollection()
-      .modify((category) => {
-        category.isFileRecursive = false;
-      });
-  });
+filesystem.version(2).stores({
+  directory: "id, parentId",
+  file: "id, parentId",
+  category: "id, parentId",
+});
 
 export const getDirectoryInfos = async (parentId: DirectoryId) => {
   return await filesystem.directory.where({ parentId }).toArray();
@@ -55,27 +48,13 @@ export const getDirectoryInfo = async (id: number) => {
 };
 
 export const storeDirectoryInfo = async (directoryInfo: DirectoryInfo) => {
-  await filesystem.directory.upsert(directoryInfo.id, { ...directoryInfo });
+  await filesystem.directory.put(directoryInfo);
 };
 
 export const deleteDirectoryInfo = async (id: number) => {
   await filesystem.directory.delete(id);
 };
 
-export const deleteDanglingDirectoryInfos = async (
-  parentId: DirectoryId,
-  validIds: Set<number>,
-) => {
-  await filesystem.directory
-    .where({ parentId })
-    .and((directory) => !validIds.has(directory.id))
-    .delete();
-};
-
-export const getAllFileInfos = async () => {
-  return await filesystem.file.toArray();
-};
-
 export const getFileInfos = async (parentId: DirectoryId) => {
   return await filesystem.file.where({ parentId }).toArray();
 };
@@ -84,29 +63,14 @@ export const getFileInfo = async (id: number) => {
   return await filesystem.file.get(id);
 };
 
-export const bulkGetFileInfos = async (ids: number[]) => {
-  return await filesystem.file.bulkGet(ids);
-};
-
 export const storeFileInfo = async (fileInfo: FileInfo) => {
-  await filesystem.file.upsert(fileInfo.id, { ...fileInfo });
+  await filesystem.file.put(fileInfo);
 };
 
 export const deleteFileInfo = async (id: number) => {
   await filesystem.file.delete(id);
 };
 
-export const bulkDeleteFileInfos = async (ids: number[]) => {
-  await filesystem.file.bulkDelete(ids);
-};
-
-export const deleteDanglingFileInfos = async (parentId: DirectoryId, validIds: Set<number>) => {
-  await filesystem.file
-    .where({ parentId })
-    .and((file) => !validIds.has(file.id))
-    .delete();
-};
-
 export const getCategoryInfos = async (parentId: CategoryId) => {
   return await filesystem.category.where({ parentId }).toArray();
 };
@@ -116,24 +80,13 @@ export const getCategoryInfo = async (id: number) => {
 };
 
 export const storeCategoryInfo = async (categoryInfo: CategoryInfo) => {
-  await filesystem.category.upsert(categoryInfo.id, { ...categoryInfo });
-};
-
-export const updateCategoryInfo = async (id: number, changes: { isFileRecursive?: boolean }) => {
-  await filesystem.category.update(id, changes);
+  await filesystem.category.put(categoryInfo);
 };
 
 export const deleteCategoryInfo = async (id: number) => {
   await filesystem.category.delete(id);
 };
 
-export const deleteDanglingCategoryInfos = async (parentId: CategoryId, validIds: Set<number>) => {
-  await filesystem.category
-    .where({ parentId })
-    .and((category) => !validIds.has(category.id))
-    .delete();
-};
-
 export const cleanupDanglingInfos = async () => {
   const validDirectoryIds: number[] = [];
   const validFileIds: number[] = [];

src/lib/indexedDB/keyStore.ts

@@ -70,12 +70,12 @@ export const storeMasterKeys = async (keys: MasterKey[]) => {
 };
 
 export const getHmacSecrets = async () => {
-  return (await keyStore.hmacSecret.toArray()).filter(({ secret }) => secret.extractable);
+  return await keyStore.hmacSecret.toArray();
 };
 
 export const storeHmacSecrets = async (secrets: HmacSecret[]) => {
-  if (secrets.some(({ secret }) => !secret.extractable)) {
-    throw new Error("Hmac secrets must be extractable");
+  if (secrets.some(({ secret }) => secret.extractable)) {
+    throw new Error("Hmac secrets must be nonextractable");
   }
   await keyStore.hmacSecret.bulkPut(secrets);
 };

src/lib/modules/crypto/aes.ts

@@ -1,15 +1,8 @@
-import { AES_GCM_IV_SIZE } from "$lib/constants";
-import {
-  encodeString,
-  decodeString,
-  encodeToBase64,
-  decodeFromBase64,
-  concatenateBuffers,
-} from "./utils";
+import { encodeString, decodeString, encodeToBase64, decodeFromBase64 } from "./util";
 
 export const generateMasterKey = async () => {
   return {
-    masterKey: await crypto.subtle.generateKey(
+    masterKey: await window.crypto.subtle.generateKey(
       {
         name: "AES-KW",
         length: 256,
@@ -22,7 +15,7 @@ export const generateMasterKey = async () => {
 
 export const generateDataKey = async () => {
   return {
-    dataKey: await crypto.subtle.generateKey(
+    dataKey: await window.crypto.subtle.generateKey(
       {
         name: "AES-GCM",
         length: 256,
@@ -35,9 +28,9 @@ export const generateDataKey = async () => {
 };
 
 export const makeAESKeyNonextractable = async (key: CryptoKey) => {
-  return await crypto.subtle.importKey(
+  return await window.crypto.subtle.importKey(
     "raw",
-    await crypto.subtle.exportKey("raw", key),
+    await window.crypto.subtle.exportKey("raw", key),
     key.algorithm,
     false,
     key.usages,
@@ -45,12 +38,12 @@ export const makeAESKeyNonextractable = async (key: CryptoKey) => {
 };
 
 export const wrapDataKey = async (dataKey: CryptoKey, masterKey: CryptoKey) => {
-  return encodeToBase64(await crypto.subtle.wrapKey("raw", dataKey, masterKey, "AES-KW"));
+  return encodeToBase64(await window.crypto.subtle.wrapKey("raw", dataKey, masterKey, "AES-KW"));
 };
 
 export const unwrapDataKey = async (dataKeyWrapped: string, masterKey: CryptoKey) => {
   return {
-    dataKey: await crypto.subtle.unwrapKey(
+    dataKey: await window.crypto.subtle.unwrapKey(
       "raw",
       decodeFromBase64(dataKeyWrapped),
       masterKey,
@@ -63,12 +56,12 @@ export const unwrapDataKey = async (dataKeyWrapped: string, masterKey: CryptoKey
 };
 
 export const wrapHmacSecret = async (hmacSecret: CryptoKey, masterKey: CryptoKey) => {
-  return encodeToBase64(await crypto.subtle.wrapKey("raw", hmacSecret, masterKey, "AES-KW"));
+  return encodeToBase64(await window.crypto.subtle.wrapKey("raw", hmacSecret, masterKey, "AES-KW"));
 };
 
 export const unwrapHmacSecret = async (hmacSecretWrapped: string, masterKey: CryptoKey) => {
   return {
-    hmacSecret: await crypto.subtle.unwrapKey(
+    hmacSecret: await window.crypto.subtle.unwrapKey(
       "raw",
       decodeFromBase64(hmacSecretWrapped),
       masterKey,
@@ -77,15 +70,15 @@ export const unwrapHmacSecret = async (hmacSecretWrapped: string, masterKey: Cry
         name: "HMAC",
         hash: "SHA-256",
       } satisfies HmacImportParams,
-      true, // Extractable
+      false, // Nonextractable
       ["sign", "verify"],
     ),
   };
 };
 
 export const encryptData = async (data: BufferSource, dataKey: CryptoKey) => {
-  const iv = crypto.getRandomValues(new Uint8Array(12));
-  const ciphertext = await crypto.subtle.encrypt(
+  const iv = window.crypto.getRandomValues(new Uint8Array(12));
+  const ciphertext = await window.crypto.subtle.encrypt(
     {
       name: "AES-GCM",
       iv,
@@ -93,18 +86,14 @@ export const encryptData = async (data: BufferSource, dataKey: CryptoKey) => {
     dataKey,
     data,
   );
-  return { ciphertext, iv: iv.buffer };
+  return { ciphertext, iv: encodeToBase64(iv.buffer) };
 };
 
-export const decryptData = async (
-  ciphertext: BufferSource,
-  iv: string | BufferSource,
-  dataKey: CryptoKey,
-) => {
-  return await crypto.subtle.decrypt(
+export const decryptData = async (ciphertext: BufferSource, iv: string, dataKey: CryptoKey) => {
+  return await window.crypto.subtle.decrypt(
     {
       name: "AES-GCM",
-      iv: typeof iv === "string" ? decodeFromBase64(iv) : iv,
+      iv: decodeFromBase64(iv),
     } satisfies AesGcmParams,
     dataKey,
     ciphertext,
@@ -113,22 +102,9 @@ export const decryptData = async (
 
 export const encryptString = async (plaintext: string, dataKey: CryptoKey) => {
   const { ciphertext, iv } = await encryptData(encodeString(plaintext), dataKey);
-  return { ciphertext: encodeToBase64(ciphertext), iv: encodeToBase64(iv) };
+  return { ciphertext: encodeToBase64(ciphertext), iv };
 };
 
 export const decryptString = async (ciphertext: string, iv: string, dataKey: CryptoKey) => {
   return decodeString(await decryptData(decodeFromBase64(ciphertext), iv, dataKey));
 };
-
-export const encryptChunk = async (chunk: ArrayBuffer, dataKey: CryptoKey) => {
-  const { ciphertext, iv } = await encryptData(chunk, dataKey);
-  return concatenateBuffers(iv, ciphertext).buffer;
-};
-
-export const decryptChunk = async (encryptedChunk: ArrayBuffer, dataKey: CryptoKey) => {
-  return await decryptData(
-    encryptedChunk.slice(AES_GCM_IV_SIZE),
-    encryptedChunk.slice(0, AES_GCM_IV_SIZE),
-    dataKey,
-  );
-};

src/lib/modules/crypto/index.ts

@@ -1,4 +1,4 @@
 export * from "./aes";
 export * from "./rsa";
 export * from "./sha";
-export * from "./utils";
+export * from "./util";

src/lib/modules/crypto/rsa.ts

@@ -1,7 +1,7 @@
-import { encodeString, encodeToBase64, decodeFromBase64 } from "./utils";
+import { encodeString, encodeToBase64, decodeFromBase64 } from "./util";
 
 export const generateEncryptionKeyPair = async () => {
-  const keyPair = await crypto.subtle.generateKey(
+  const keyPair = await window.crypto.subtle.generateKey(
     {
       name: "RSA-OAEP",
       modulusLength: 4096,
@@ -18,7 +18,7 @@ export const generateEncryptionKeyPair = async () => {
 };
 
 export const generateSigningKeyPair = async () => {
-  const keyPair = await crypto.subtle.generateKey(
+  const keyPair = await window.crypto.subtle.generateKey(
     {
       name: "RSA-PSS",
       modulusLength: 4096,
@@ -37,7 +37,7 @@ export const generateSigningKeyPair = async () => {
 export const exportRSAKey = async (key: CryptoKey) => {
   const format = key.type === "public" ? ("spki" as const) : ("pkcs8" as const);
   return {
-    key: await crypto.subtle.exportKey(format, key),
+    key: await window.crypto.subtle.exportKey(format, key),
     format,
   };
 };
@@ -46,63 +46,19 @@ export const exportRSAKeyToBase64 = async (key: CryptoKey) => {
   return encodeToBase64((await exportRSAKey(key)).key);
 };
 
-export const importEncryptionKeyPairFromBase64 = async (
-  encryptKeyBase64: string,
-  decryptKeyBase64: string,
-) => {
-  const algorithm: RsaHashedImportParams = {
-    name: "RSA-OAEP",
-    hash: "SHA-256",
-  };
-  const encryptKey = await crypto.subtle.importKey(
-    "spki",
-    decodeFromBase64(encryptKeyBase64),
-    algorithm,
-    true,
-    ["encrypt", "wrapKey"],
-  );
-  const decryptKey = await crypto.subtle.importKey(
-    "pkcs8",
-    decodeFromBase64(decryptKeyBase64),
-    algorithm,
-    true,
-    ["decrypt", "unwrapKey"],
-  );
-  return { encryptKey, decryptKey };
-};
-
-export const importSigningKeyPairFromBase64 = async (
-  signKeyBase64: string,
-  verifyKeyBase64: string,
-) => {
-  const algorithm: RsaHashedImportParams = {
-    name: "RSA-PSS",
-    hash: "SHA-256",
-  };
-  const signKey = await crypto.subtle.importKey(
-    "pkcs8",
-    decodeFromBase64(signKeyBase64),
-    algorithm,
-    true,
-    ["sign"],
-  );
-  const verifyKey = await crypto.subtle.importKey(
-    "spki",
-    decodeFromBase64(verifyKeyBase64),
-    algorithm,
-    true,
-    ["verify"],
-  );
-  return { signKey, verifyKey };
-};
-
 export const makeRSAKeyNonextractable = async (key: CryptoKey) => {
   const { key: exportedKey, format } = await exportRSAKey(key);
-  return await crypto.subtle.importKey(format, exportedKey, key.algorithm, false, key.usages);
+  return await window.crypto.subtle.importKey(
+    format,
+    exportedKey,
+    key.algorithm,
+    false,
+    key.usages,
+  );
 };
 
 export const decryptChallenge = async (challenge: string, decryptKey: CryptoKey) => {
-  return await crypto.subtle.decrypt(
+  return await window.crypto.subtle.decrypt(
     {
       name: "RSA-OAEP",
     } satisfies RsaOaepParams,
@@ -113,7 +69,7 @@ export const decryptChallenge = async (challenge: string, decryptKey: CryptoKey)
 
 export const wrapMasterKey = async (masterKey: CryptoKey, encryptKey: CryptoKey) => {
   return encodeToBase64(
-    await crypto.subtle.wrapKey("raw", masterKey, encryptKey, {
+    await window.crypto.subtle.wrapKey("raw", masterKey, encryptKey, {
       name: "RSA-OAEP",
     } satisfies RsaOaepParams),
   );
@@ -125,7 +81,7 @@ export const unwrapMasterKey = async (
   extractable = false,
 ) => {
   return {
-    masterKey: await crypto.subtle.unwrapKey(
+    masterKey: await window.crypto.subtle.unwrapKey(
       "raw",
       decodeFromBase64(masterKeyWrapped),
       decryptKey,
@@ -140,7 +96,7 @@ export const unwrapMasterKey = async (
 };
 
 export const signMessageRSA = async (message: BufferSource, signKey: CryptoKey) => {
-  return await crypto.subtle.sign(
+  return await window.crypto.subtle.sign(
     {
       name: "RSA-PSS",
       saltLength: 32, // SHA-256
@@ -155,7 +111,7 @@ export const verifySignatureRSA = async (
   signature: BufferSource,
   verifyKey: CryptoKey,
 ) => {
-  return await crypto.subtle.verify(
+  return await window.crypto.subtle.verify(
     {
       name: "RSA-PSS",
       saltLength: 32, // SHA-256

src/lib/modules/crypto/sha.ts

@@ -1,13 +1,10 @@
-import { hmac } from "@noble/hashes/hmac.js";
-import { sha256 } from "@noble/hashes/sha2.js";
-
 export const digestMessage = async (message: BufferSource) => {
-  return await crypto.subtle.digest("SHA-256", message);
+  return await window.crypto.subtle.digest("SHA-256", message);
 };
 
 export const generateHmacSecret = async () => {
   return {
-    hmacSecret: await crypto.subtle.generateKey(
+    hmacSecret: await window.crypto.subtle.generateKey(
       {
         name: "HMAC",
         hash: "SHA-256",
@@ -18,10 +15,6 @@ export const generateHmacSecret = async () => {
   };
 };
 
-export const createHmacStream = async (hmacSecret: CryptoKey) => {
-  const h = hmac.create(sha256, new Uint8Array(await crypto.subtle.exportKey("raw", hmacSecret)));
-  return {
-    update: (data: Uint8Array) => h.update(data),
-    digest: () => h.digest(),
-  };
+export const signMessageHmac = async (message: BufferSource, hmacSecret: CryptoKey) => {
+  return await window.crypto.subtle.sign("HMAC", hmacSecret, message);
 };

src/lib/modules/crypto/util.ts

@@ -9,8 +9,8 @@ export const decodeString = (data: ArrayBuffer) => {
   return textDecoder.decode(data);
 };
 
-export const encodeToBase64 = (data: ArrayBuffer | Uint8Array) => {
-  return btoa(String.fromCharCode(...(data instanceof ArrayBuffer ? new Uint8Array(data) : data)));
+export const encodeToBase64 = (data: ArrayBuffer) => {
+  return btoa(String.fromCharCode(...new Uint8Array(data)));
 };
 
 export const decodeFromBase64 = (data: string) => {

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

@@ -1,110 +0,0 @@
-import axios from "axios";
-import { limitFunction } from "p-limit";
-import { CHUNK_SIZE, ENCRYPTION_OVERHEAD } from "$lib/constants";
-import { decryptChunk, concatenateBuffers } from "$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,
-    encryptedChunkSize: number,
-    dataKey: CryptoKey,
-  ) => {
-    state.status = "decrypting";
-
-    const chunks: ArrayBuffer[] = [];
-    let offset = 0;
-
-    while (offset < fileEncrypted.byteLength) {
-      const nextOffset = Math.min(offset + encryptedChunkSize, fileEncrypted.byteLength);
-      chunks.push(await decryptChunk(fileEncrypted.slice(offset, nextOffset), dataKey));
-      offset = nextOffset;
-    }
-
-    const fileBuffer = concatenateBuffers(...chunks).buffer;
-    state.status = "decrypted";
-    state.result = fileBuffer;
-    return fileBuffer;
-  },
-  { concurrency: 4 },
-);
-
-export const downloadFile = async (id: number, dataKey: CryptoKey, isLegacy: boolean) => {
-  downloadingFiles.push({
-    id,
-    status: "download-pending",
-  });
-  const state = downloadingFiles.at(-1)!;
-
-  try {
-    const fileEncrypted = await requestFileDownload(state, id);
-    return await decryptFile(
-      state,
-      fileEncrypted,
-      isLegacy ? fileEncrypted.byteLength : CHUNK_SIZE + ENCRYPTION_OVERHEAD,
-      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

@@ -1,4 +1,3 @@
 export * from "./cache";
-export * from "./download.svelte";
-export * from "./thumbnail";
-export * from "./upload.svelte";
+export * from "./download";
+export * from "./upload";

src/lib/modules/file/thumbnail.ts

@@ -1,82 +0,0 @@
-import { LRUCache } from "lru-cache";
-import { writable, type Writable } from "svelte/store";
-import { browser } from "$app/environment";
-import { decryptData } from "$lib/modules/crypto";
-import type { SummarizedFileInfo } from "$lib/modules/filesystem";
-import { readFile, writeFile, deleteFile, deleteDirectory } from "$lib/modules/opfs";
-import { getThumbnailUrl } from "$lib/modules/thumbnail";
-
-const loadedThumbnails = new LRUCache<number, Writable<string>>({ max: 100 });
-const loadingThumbnails = new Map<number, Writable<string | undefined>>();
-
-const fetchFromOpfs = async (fileId: number) => {
-  const thumbnailBuffer = await readFile(`/thumbnail/file/${fileId}`);
-  if (thumbnailBuffer) {
-    return getThumbnailUrl(thumbnailBuffer);
-  }
-};
-
-const fetchFromServer = async (fileId: number, dataKey: CryptoKey) => {
-  const res = await fetch(`/api/file/${fileId}/thumbnail/download`);
-  if (!res.ok) return null;
-
-  const thumbnailEncrypted = await res.arrayBuffer();
-  const thumbnailBuffer = await decryptData(
-    thumbnailEncrypted.slice(12),
-    thumbnailEncrypted.slice(0, 12),
-    dataKey,
-  );
-
-  void writeFile(`/thumbnail/file/${fileId}`, thumbnailBuffer);
-  return getThumbnailUrl(thumbnailBuffer);
-};
-
-export const getFileThumbnail = (file: SummarizedFileInfo) => {
-  if (
-    !browser ||
-    !(file.contentType.startsWith("image/") || file.contentType.startsWith("video/"))
-  ) {
-    return undefined;
-  }
-
-  const thumbnail = loadedThumbnails.get(file.id);
-  if (thumbnail) return thumbnail;
-
-  let loadingThumbnail = loadingThumbnails.get(file.id);
-  if (loadingThumbnail) return loadingThumbnail;
-
-  loadingThumbnail = writable(undefined);
-  loadingThumbnails.set(file.id, loadingThumbnail);
-
-  fetchFromOpfs(file.id)
-    .then((thumbnail) => thumbnail ?? (file.dataKey && fetchFromServer(file.id, file.dataKey.key)))
-    .then((thumbnail) => {
-      if (thumbnail) {
-        loadingThumbnail.set(thumbnail);
-        loadedThumbnails.set(file.id, loadingThumbnail as Writable<string>);
-      }
-      loadingThumbnails.delete(file.id);
-    });
-  return loadingThumbnail;
-};
-
-export const storeFileThumbnailCache = async (fileId: number, thumbnailBuffer: ArrayBuffer) => {
-  await writeFile(`/thumbnail/file/${fileId}`, thumbnailBuffer);
-
-  const oldThumbnail = loadedThumbnails.get(fileId);
-  if (oldThumbnail) {
-    oldThumbnail.set(getThumbnailUrl(thumbnailBuffer));
-  } else {
-    loadedThumbnails.set(fileId, writable(getThumbnailUrl(thumbnailBuffer)));
-  }
-};
-
-export const deleteFileThumbnailCache = async (fileId: number) => {
-  loadedThumbnails.delete(fileId);
-  await deleteFile(`/thumbnail/file/${fileId}`);
-};
-
-export const deleteAllFileThumbnailCaches = async () => {
-  loadedThumbnails.clear();
-  await deleteDirectory(`/thumbnail/file`);
-};

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

@@ -1,480 +0,0 @@
-import ExifReader from "exifreader";
-import pLimit, { limitFunction } from "p-limit";
-import { CHUNK_SIZE } from "$lib/constants";
-import {
-  encodeToBase64,
-  generateDataKey,
-  wrapDataKey,
-  encryptData,
-  encryptString,
-  encryptChunk,
-  digestMessage,
-  createHmacStream,
-} from "$lib/modules/crypto";
-import { Scheduler } from "$lib/modules/scheduler";
-import { generateThumbnail, generateThumbnailFromFile } from "$lib/modules/thumbnail";
-import type { MasterKey, HmacSecret } from "$lib/stores";
-import { trpc } from "$trpc/client";
-import type { RouterInputs } from "$trpc/router.server";
-
-export interface FileUploadState {
-  name: string;
-  parentId: DirectoryId;
-  status:
-    | "queued"
-    | "encryption-pending"
-    | "encrypting"
-    | "upload-pending"
-    | "uploading"
-    | "uploaded"
-    | "canceled"
-    | "error";
-  progress?: number;
-  rate?: number;
-  estimated?: number;
-}
-
-export type LiveFileUploadState = FileUploadState & {
-  status: "queued" | "encryption-pending" | "encrypting" | "upload-pending" | "uploading";
-};
-
-const scheduler = new Scheduler<
-  { fileId: number; fileBuffer?: ArrayBuffer; thumbnailBuffer?: ArrayBuffer } | undefined
->();
-let uploadingFiles: FileUploadState[] = $state([]);
-
-const isFileUploading = (status: FileUploadState["status"]) =>
-  ["queued", "encryption-pending", "encrypting", "upload-pending", "uploading"].includes(status);
-
-export const getUploadingFiles = (parentId?: DirectoryId) => {
-  return uploadingFiles.filter(
-    (file) =>
-      (parentId === undefined || file.parentId === parentId) && isFileUploading(file.status),
-  );
-};
-
-export const clearUploadedFiles = () => {
-  uploadingFiles = uploadingFiles.filter((file) => isFileUploading(file.status));
-};
-
-const requestDuplicateFileScan = limitFunction(
-  async (file: File, hmacSecret: HmacSecret, onDuplicate: () => Promise<boolean>) => {
-    const hmacStream = await createHmacStream(hmacSecret.secret);
-    const reader = file.stream().getReader();
-
-    while (true) {
-      const { done, value } = await reader.read();
-      if (done) break;
-      hmacStream.update(value);
-    }
-
-    const fileSigned = encodeToBase64(hmacStream.digest());
-    const files = await trpc().file.listByHash.query({
-      hskVersion: hmacSecret.version,
-      contentHmac: fileSigned,
-    });
-    if (files.length === 0 || (await onDuplicate())) {
-      return { fileSigned };
-    } else {
-      return {};
-    }
-  },
-  { concurrency: 1 },
-);
-
-const getFileType = (file: File) => {
-  if (file.type) return file.type;
-  if (file.name.endsWith(".heic")) return "image/heic";
-  throw new Error("Unknown file type");
-};
-
-const extractExifDateTime = (fileBuffer: ArrayBuffer) => {
-  const exif = ExifReader.load(fileBuffer);
-  const dateTimeOriginal = exif["DateTimeOriginal"]?.description;
-  const offsetTimeOriginal = exif["OffsetTimeOriginal"]?.description;
-  if (!dateTimeOriginal) return undefined;
-
-  const [date, time] = dateTimeOriginal.split(" ");
-  if (!date || !time) return undefined;
-
-  const [year, month, day] = date.split(":").map(Number);
-  const [hour, minute, second] = time.split(":").map(Number);
-  if (!year || !month || !day || !hour || !minute || !second) return undefined;
-
-  if (!offsetTimeOriginal) {
-    // No timezone information.. Assume local timezone
-    return new Date(year, month - 1, day, hour, minute, second);
-  }
-
-  const offsetSign = offsetTimeOriginal[0] === "+" ? 1 : -1;
-  const [offsetHour, offsetMinute] = offsetTimeOriginal.slice(1).split(":").map(Number);
-
-  const utcDate = Date.UTC(year, month - 1, day, hour, minute, second);
-  const offsetMs = offsetSign * ((offsetHour ?? 0) * 60 + (offsetMinute ?? 0)) * 60 * 1000;
-  return new Date(utcDate - offsetMs);
-};
-
-const encryptChunks = async (fileBuffer: ArrayBuffer, dataKey: CryptoKey) => {
-  const chunksEncrypted: { chunkEncrypted: ArrayBuffer; chunkEncryptedHash: string }[] = [];
-  let offset = 0;
-
-  while (offset < fileBuffer.byteLength) {
-    const nextOffset = Math.min(offset + CHUNK_SIZE, fileBuffer.byteLength);
-    const chunkEncrypted = await encryptChunk(fileBuffer.slice(offset, nextOffset), dataKey);
-    chunksEncrypted.push({
-      chunkEncrypted: chunkEncrypted,
-      chunkEncryptedHash: encodeToBase64(await digestMessage(chunkEncrypted)),
-    });
-    offset = nextOffset;
-  }
-
-  return chunksEncrypted;
-};
-
-const encryptImageFile = limitFunction(
-  async (state: FileUploadState, file: File, masterKey: MasterKey) => {
-    state.status = "encrypting";
-
-    const fileBuffer = await file.arrayBuffer();
-    const createdAt = extractExifDateTime(fileBuffer);
-
-    const { dataKey, dataKeyVersion } = await generateDataKey();
-    const dataKeyWrapped = await wrapDataKey(dataKey, masterKey.key);
-    const chunksEncrypted = await encryptChunks(fileBuffer, dataKey);
-
-    const nameEncrypted = await encryptString(file.name, dataKey);
-    const createdAtEncrypted =
-      createdAt && (await encryptString(createdAt.getTime().toString(), dataKey));
-    const lastModifiedAtEncrypted = await encryptString(file.lastModified.toString(), dataKey);
-
-    const thumbnail = await generateThumbnail(fileBuffer, getFileType(file));
-    const thumbnailBuffer = await thumbnail?.arrayBuffer();
-    const thumbnailEncrypted = thumbnailBuffer && (await encryptData(thumbnailBuffer, dataKey));
-
-    state.status = "upload-pending";
-
-    return {
-      dataKeyWrapped,
-      dataKeyVersion,
-      chunksEncrypted,
-      nameEncrypted,
-      createdAtEncrypted,
-      lastModifiedAtEncrypted,
-      thumbnail: thumbnailEncrypted && { plaintext: thumbnailBuffer, ...thumbnailEncrypted },
-    };
-  },
-  { concurrency: 4 },
-);
-
-const uploadThumbnail = async (
-  fileId: number,
-  thumbnailEncrypted: { ciphertext: ArrayBuffer; iv: ArrayBuffer },
-  dataKeyVersion: Date,
-) => {
-  const { uploadId } = await trpc().upload.startFileThumbnailUpload.mutate({
-    file: fileId,
-    dekVersion: dataKeyVersion,
-  });
-
-  const ivAndCiphertext = new Uint8Array(
-    thumbnailEncrypted.iv.byteLength + thumbnailEncrypted.ciphertext.byteLength,
-  );
-  ivAndCiphertext.set(new Uint8Array(thumbnailEncrypted.iv), 0);
-  ivAndCiphertext.set(
-    new Uint8Array(thumbnailEncrypted.ciphertext),
-    thumbnailEncrypted.iv.byteLength,
-  );
-
-  const chunkHash = encodeToBase64(await digestMessage(ivAndCiphertext));
-
-  const response = await fetch(`/api/upload/${uploadId}/chunks/0`, {
-    method: "POST",
-    headers: {
-      "Content-Type": "application/octet-stream",
-      "Content-Digest": `sha-256=:${chunkHash}:`,
-    },
-    body: ivAndCiphertext,
-  });
-
-  if (!response.ok) {
-    throw new Error(`Thumbnail upload failed: ${response.status} ${response.statusText}`);
-  }
-
-  await trpc().upload.completeFileThumbnailUpload.mutate({ uploadId });
-};
-
-const requestImageFileUpload = limitFunction(
-  async (
-    state: FileUploadState,
-    metadata: RouterInputs["upload"]["startFileUpload"],
-    chunksEncrypted: { chunkEncrypted: ArrayBuffer; chunkEncryptedHash: string }[],
-    fileSigned: string | undefined,
-    thumbnailData: { ciphertext: ArrayBuffer; iv: ArrayBuffer; plaintext: ArrayBuffer } | null,
-    dataKeyVersion: Date,
-  ) => {
-    state.status = "uploading";
-
-    const { uploadId } = await trpc().upload.startFileUpload.mutate(metadata);
-
-    const totalBytes = chunksEncrypted.reduce((sum, c) => sum + c.chunkEncrypted.byteLength, 0);
-    let uploadedBytes = 0;
-    const startTime = Date.now();
-
-    for (let i = 0; i < chunksEncrypted.length; i++) {
-      const { chunkEncrypted, chunkEncryptedHash } = chunksEncrypted[i]!;
-
-      const response = await fetch(`/api/upload/${uploadId}/chunks/${i}`, {
-        method: "POST",
-        headers: {
-          "Content-Type": "application/octet-stream",
-          "Content-Digest": `sha-256=:${chunkEncryptedHash}:`,
-        },
-        body: chunkEncrypted,
-      });
-
-      if (!response.ok) {
-        throw new Error(`Chunk upload failed: ${response.status} ${response.statusText}`);
-      }
-
-      uploadedBytes += chunkEncrypted.byteLength;
-
-      const elapsed = (Date.now() - startTime) / 1000;
-      const rate = uploadedBytes / elapsed;
-      const remaining = totalBytes - uploadedBytes;
-      const estimated = rate > 0 ? remaining / rate : undefined;
-
-      state.progress = uploadedBytes / totalBytes;
-      state.rate = rate;
-      state.estimated = estimated;
-    }
-
-    const { file: fileId } = await trpc().upload.completeFileUpload.mutate({
-      uploadId,
-      contentHmac: fileSigned,
-    });
-
-    if (thumbnailData) {
-      try {
-        await uploadThumbnail(fileId, thumbnailData, dataKeyVersion);
-      } catch (e) {
-        // TODO: Error handling for thumbnail upload
-        console.error(e);
-      }
-    }
-
-    state.status = "uploaded";
-
-    return { fileId, thumbnailBuffer: thumbnailData?.plaintext };
-  },
-  { concurrency: 1 },
-);
-
-const requestFileUpload = async (
-  state: FileUploadState,
-  file: File,
-  masterKey: MasterKey,
-  hmacSecret: HmacSecret,
-  fileSigned: string,
-  parentId: DirectoryId,
-) => {
-  state.status = "uploading";
-
-  const fileType = getFileType(file);
-  const { dataKey, dataKeyVersion } = await generateDataKey();
-  const dataKeyWrapped = await wrapDataKey(dataKey, masterKey.key);
-
-  const nameEncrypted = await encryptString(file.name, dataKey);
-  const lastModifiedAtEncrypted = await encryptString(file.lastModified.toString(), dataKey);
-
-  const totalChunks = Math.ceil(file.size / CHUNK_SIZE);
-  const metadata = {
-    chunks: totalChunks,
-    parent: parentId,
-    mekVersion: masterKey.version,
-    dek: dataKeyWrapped,
-    dekVersion: dataKeyVersion,
-    hskVersion: hmacSecret.version,
-    contentType: fileType,
-    name: nameEncrypted.ciphertext,
-    nameIv: nameEncrypted.iv,
-    lastModifiedAt: lastModifiedAtEncrypted.ciphertext,
-    lastModifiedAtIv: lastModifiedAtEncrypted.iv,
-  };
-
-  const { uploadId } = await trpc().upload.startFileUpload.mutate(metadata);
-
-  const reader = file.stream().getReader();
-  const limit = pLimit(4);
-  let buffer = new Uint8Array(0);
-  let chunkIndex = 0;
-  const uploadPromises: Promise<void>[] = [];
-
-  const totalBytes = file.size;
-  let uploadedBytes = 0;
-  const startTime = Date.now();
-
-  const uploadChunk = async (
-    index: number,
-    encryptedChunk: ArrayBuffer,
-    chunkHash: string,
-    originalChunkSize: number,
-  ) => {
-    const response = await fetch(`/api/upload/${uploadId}/chunks/${index}`, {
-      method: "POST",
-      headers: {
-        "Content-Type": "application/octet-stream",
-        "Content-Digest": `sha-256=:${chunkHash}:`,
-      },
-      body: encryptedChunk,
-    });
-
-    if (!response.ok) {
-      throw new Error(`Chunk upload failed: ${response.status} ${response.statusText}`);
-    }
-
-    uploadedBytes += originalChunkSize;
-    const elapsed = (Date.now() - startTime) / 1000;
-    const rate = uploadedBytes / elapsed;
-    const remaining = totalBytes - uploadedBytes;
-    const estimated = rate > 0 ? remaining / rate : undefined;
-
-    state.progress = uploadedBytes / totalBytes;
-    state.rate = rate;
-    state.estimated = estimated;
-  };
-
-  while (true) {
-    const { done, value } = await reader.read();
-    if (done && buffer.length === 0) break;
-
-    if (value) {
-      const newBuffer = new Uint8Array(buffer.length + value.length);
-      newBuffer.set(buffer);
-      newBuffer.set(value, buffer.length);
-      buffer = newBuffer;
-    }
-
-    while (buffer.length >= CHUNK_SIZE || (done && buffer.length > 0)) {
-      const chunkSize = Math.min(CHUNK_SIZE, buffer.length);
-      const chunk = buffer.slice(0, chunkSize);
-      buffer = buffer.slice(chunkSize);
-
-      const encryptedChunk = await encryptChunk(chunk.buffer.slice(0, chunk.byteLength), dataKey);
-      const chunkHash = encodeToBase64(await digestMessage(encryptedChunk));
-      const currentIndex = chunkIndex++;
-
-      uploadPromises.push(
-        limit(() => uploadChunk(currentIndex, encryptedChunk, chunkHash, chunkSize)),
-      );
-    }
-
-    if (done) break;
-  }
-
-  await Promise.all(uploadPromises);
-
-  const { file: fileId } = await trpc().upload.completeFileUpload.mutate({
-    uploadId,
-    contentHmac: fileSigned,
-  });
-
-  if (fileType.startsWith("video/")) {
-    try {
-      const thumbnail = await generateThumbnailFromFile(file);
-      if (thumbnail) {
-        const thumbnailBuffer = await thumbnail.arrayBuffer();
-        const thumbnailEncrypted = await encryptData(thumbnailBuffer, dataKey);
-
-        await uploadThumbnail(fileId, thumbnailEncrypted, dataKeyVersion);
-      }
-    } catch (e) {
-      // Thumbnail upload failure is not critical
-      console.error(e);
-    }
-  }
-
-  state.status = "uploaded";
-
-  return { fileId };
-};
-
-export const uploadFile = async (
-  file: File,
-  parentId: "root" | number,
-  hmacSecret: HmacSecret,
-  masterKey: MasterKey,
-  onDuplicate: () => Promise<boolean>,
-) => {
-  uploadingFiles.push({
-    name: file.name,
-    parentId,
-    status: "queued",
-  });
-  const state = uploadingFiles.at(-1)!;
-
-  return await scheduler.schedule(file.size, async () => {
-    state.status = "encryption-pending";
-
-    try {
-      const { fileSigned } = await requestDuplicateFileScan(file, hmacSecret, onDuplicate);
-      if (!fileSigned) {
-        state.status = "canceled";
-        uploadingFiles = uploadingFiles.filter((file) => file !== state);
-        return;
-      }
-
-      const fileType = getFileType(file);
-      if (fileType.startsWith("image/")) {
-        const fileBuffer = await file.arrayBuffer();
-        const {
-          dataKeyWrapped,
-          dataKeyVersion,
-          chunksEncrypted,
-          nameEncrypted,
-          createdAtEncrypted,
-          lastModifiedAtEncrypted,
-          thumbnail,
-        } = await encryptImageFile(state, file, masterKey);
-
-        const metadata = {
-          chunks: chunksEncrypted.length,
-          parent: parentId,
-          mekVersion: masterKey.version,
-          dek: dataKeyWrapped,
-          dekVersion: dataKeyVersion,
-          hskVersion: hmacSecret.version,
-          contentType: fileType,
-          name: nameEncrypted.ciphertext,
-          nameIv: nameEncrypted.iv,
-          createdAt: createdAtEncrypted?.ciphertext,
-          createdAtIv: createdAtEncrypted?.iv,
-          lastModifiedAt: lastModifiedAtEncrypted.ciphertext,
-          lastModifiedAtIv: lastModifiedAtEncrypted.iv,
-        };
-
-        const { fileId, thumbnailBuffer } = await requestImageFileUpload(
-          state,
-          metadata,
-          chunksEncrypted,
-          fileSigned,
-          thumbnail ?? null,
-          dataKeyVersion,
-        );
-        return { fileId, fileBuffer, thumbnailBuffer };
-      } else {
-        const { fileId } = await requestFileUpload(
-          state,
-          file,
-          masterKey,
-          hmacSecret,
-          fileSigned,
-          parentId,
-        );
-        return { fileId };
-      }
-    } catch (e) {
-      state.status = "error";
-      throw e;
-    }
-  });
-};

src/lib/modules/file/upload.ts

@@ -0,0 +1,235 @@
+import axios from "axios";
+import ExifReader from "exifreader";
+import { limitFunction } from "p-limit";
+import { writable, type Writable } from "svelte/store";
+import {
+  encodeToBase64,
+  generateDataKey,
+  wrapDataKey,
+  encryptData,
+  encryptString,
+  digestMessage,
+  signMessageHmac,
+} from "$lib/modules/crypto";
+import type {
+  DuplicateFileScanRequest,
+  DuplicateFileScanResponse,
+  FileUploadRequest,
+  FileUploadResponse,
+} from "$lib/server/schemas";
+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 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 {
+      return {};
+    }
+  },
+  { concurrency: 1 },
+);
+
+const getFileType = (file: File) => {
+  if (file.type) return file.type;
+  if (file.name.endsWith(".heic")) return "image/heic";
+  throw new Error("Unknown file type");
+};
+
+const extractExifDateTime = (fileBuffer: ArrayBuffer) => {
+  const exif = ExifReader.load(fileBuffer);
+  const dateTimeOriginal = exif["DateTimeOriginal"]?.description;
+  const offsetTimeOriginal = exif["OffsetTimeOriginal"]?.description;
+  if (!dateTimeOriginal) return undefined;
+
+  const [date, time] = dateTimeOriginal.split(" ");
+  if (!date || !time) return undefined;
+
+  const [year, month, day] = date.split(":").map(Number);
+  const [hour, minute, second] = time.split(":").map(Number);
+  if (!year || !month || !day || !hour || !minute || !second) return undefined;
+
+  if (!offsetTimeOriginal) {
+    // No timezone information.. Assume local timezone
+    return new Date(year, month - 1, day, hour, minute, second);
+  }
+
+  const offsetSign = offsetTimeOriginal[0] === "+" ? 1 : -1;
+  const [offsetHour, offsetMinute] = offsetTimeOriginal.slice(1).split(":").map(Number);
+
+  const utcDate = Date.UTC(year, month - 1, day, hour, minute, second);
+  const offsetMs = offsetSign * ((offsetHour ?? 0) * 60 + (offsetMinute ?? 0)) * 60 * 1000;
+  return new Date(utcDate - offsetMs);
+};
+
+const encryptFile = limitFunction(
+  async (
+    status: Writable<FileUploadStatus>,
+    file: File,
+    fileBuffer: ArrayBuffer,
+    masterKey: MasterKey,
+  ) => {
+    status.update((value) => {
+      value.status = "encrypting";
+      return value;
+    });
+
+    const fileType = getFileType(file);
+
+    let createdAt;
+    if (fileType.startsWith("image/")) {
+      createdAt = extractExifDateTime(fileBuffer);
+    }
+
+    const { dataKey, dataKeyVersion } = await generateDataKey();
+    const dataKeyWrapped = await wrapDataKey(dataKey, masterKey.key);
+
+    const fileEncrypted = await encryptData(fileBuffer, dataKey);
+    const fileEncryptedHash = encodeToBase64(await digestMessage(fileEncrypted.ciphertext));
+
+    const nameEncrypted = await encryptString(file.name, dataKey);
+    const createdAtEncrypted =
+      createdAt && (await encryptString(createdAt.getTime().toString(), dataKey));
+    const lastModifiedAtEncrypted = await encryptString(file.lastModified.toString(), dataKey);
+
+    status.update((value) => {
+      value.status = "upload-pending";
+      return value;
+    });
+
+    return {
+      dataKeyWrapped,
+      dataKeyVersion,
+      fileType,
+      fileEncrypted,
+      fileEncryptedHash,
+      nameEncrypted,
+      createdAtEncrypted,
+      lastModifiedAtEncrypted,
+    };
+  },
+  { concurrency: 4 },
+);
+
+const requestFileUpload = limitFunction(
+  async (status: Writable<FileUploadStatus>, form: FormData) => {
+    status.update((value) => {
+      value.status = "uploading";
+      return value;
+    });
+
+    const res = await axios.post("/api/file/upload", form, {
+      onUploadProgress: ({ progress, rate, estimated }) => {
+        status.update((value) => {
+          value.progress = progress;
+          value.rate = rate;
+          value.estimated = estimated;
+          return value;
+        });
+      },
+    });
+    const { file }: FileUploadResponse = res.data;
+
+    status.update((value) => {
+      value.status = "uploaded";
+      return value;
+    });
+
+    return { fileId: file };
+  },
+  { concurrency: 1 },
+);
+
+export const uploadFile = async (
+  file: File,
+  parentId: "root" | number,
+  hmacSecret: HmacSecret,
+  masterKey: MasterKey,
+  onDuplicate: () => Promise<boolean>,
+): Promise<{ fileId: number; fileBuffer: ArrayBuffer } | undefined> => {
+  const status = writable<FileUploadStatus>({
+    name: file.name,
+    parentId,
+    status: "encryption-pending",
+  });
+  fileUploadStatusStore.update((value) => {
+    value.push(status);
+    return value;
+  });
+
+  try {
+    const { fileBuffer, fileSigned } = await requestDuplicateFileScan(
+      file,
+      hmacSecret,
+      onDuplicate,
+    );
+    if (!fileBuffer || !fileSigned) {
+      status.update((value) => {
+        value.status = "canceled";
+        return value;
+      });
+      fileUploadStatusStore.update((value) => {
+        value = value.filter((v) => v !== status);
+        return value;
+      });
+      return undefined;
+    }
+
+    const {
+      dataKeyWrapped,
+      dataKeyVersion,
+      fileType,
+      fileEncrypted,
+      fileEncryptedHash,
+      nameEncrypted,
+      createdAtEncrypted,
+      lastModifiedAtEncrypted,
+    } = await encryptFile(status, file, fileBuffer, masterKey);
+
+    const form = new FormData();
+    form.set(
+      "metadata",
+      JSON.stringify({
+        parent: parentId,
+        mekVersion: masterKey.version,
+        dek: dataKeyWrapped,
+        dekVersion: dataKeyVersion.toISOString(),
+        hskVersion: hmacSecret.version,
+        contentHmac: fileSigned,
+        contentType: fileType,
+        contentIv: fileEncrypted.iv,
+        name: nameEncrypted.ciphertext,
+        nameIv: nameEncrypted.iv,
+        createdAt: createdAtEncrypted?.ciphertext,
+        createdAtIv: createdAtEncrypted?.iv,
+        lastModifiedAt: lastModifiedAtEncrypted.ciphertext,
+        lastModifiedAtIv: lastModifiedAtEncrypted.iv,
+      } as FileUploadRequest),
+    );
+    form.set("content", new Blob([fileEncrypted.ciphertext]));
+    form.set("checksum", fileEncryptedHash);
+
+    const { fileId } = await requestFileUpload(status, form);
+    return { fileId, fileBuffer };
+  } catch (e) {
+    status.update((value) => {
+      value.status = "error";
+      return value;
+    });
+    throw e;
+  }
+};

src/lib/modules/filesystem.ts

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

src/lib/modules/filesystem/category.ts

@@ -1,121 +0,0 @@
-import * as IndexedDB from "$lib/indexedDB";
-import { trpc, isTRPCClientError } from "$trpc/client";
-import { FilesystemCache, decryptFileMetadata, decryptCategoryMetadata } from "./internal.svelte";
-import type { CategoryInfo, MaybeCategoryInfo } from "./types";
-
-const cache = new FilesystemCache<CategoryId, MaybeCategoryInfo>({
-  async fetchFromIndexedDB(id) {
-    const [category, subCategories] = await Promise.all([
-      id !== "root" ? IndexedDB.getCategoryInfo(id) : undefined,
-      IndexedDB.getCategoryInfos(id),
-    ]);
-    const files = category?.files
-      ? await Promise.all(
-          category.files.map(async (file) => {
-            const fileInfo = await IndexedDB.getFileInfo(file.id);
-            return fileInfo
-              ? {
-                  id: file.id,
-                  parentId: fileInfo.parentId,
-                  contentType: fileInfo.contentType,
-                  name: fileInfo.name,
-                  createdAt: fileInfo.createdAt,
-                  lastModifiedAt: fileInfo.lastModifiedAt,
-                  isRecursive: file.isRecursive,
-                }
-              : undefined;
-          }),
-        )
-      : undefined;
-
-    if (id === "root") {
-      return {
-        id,
-        exists: true,
-        subCategories,
-      };
-    } else if (category) {
-      return {
-        id,
-        exists: true,
-        parentId: category.parentId,
-        name: category.name,
-        subCategories,
-        files: files?.filter((file) => !!file) ?? [],
-        isFileRecursive: category.isFileRecursive ?? false,
-      };
-    }
-  },
-
-  async fetchFromServer(id, cachedInfo, masterKey) {
-    try {
-      const category = await trpc().category.get.query({ id, recurse: true });
-      const [subCategories, files, metadata] = await Promise.all([
-        Promise.all(
-          category.subCategories.map(async (category) => ({
-            id: category.id,
-            parentId: id,
-            ...(await decryptCategoryMetadata(category, masterKey)),
-          })),
-        ),
-        category.files &&
-          Promise.all(
-            category.files.map(async (file) => ({
-              id: file.id,
-              parentId: file.parent,
-              contentType: file.contentType,
-              isRecursive: file.isRecursive,
-              ...(await decryptFileMetadata(file, masterKey)),
-            })),
-          ),
-        category.metadata && decryptCategoryMetadata(category.metadata, masterKey),
-      ]);
-
-      return storeToIndexedDB(
-        id !== "root"
-          ? {
-              id,
-              parentId: category.metadata!.parent,
-              subCategories,
-              files: files!,
-              isFileRecursive: cachedInfo?.isFileRecursive ?? false,
-              ...metadata!,
-            }
-          : { id, subCategories },
-      );
-    } catch (e) {
-      if (isTRPCClientError(e) && e.data?.code === "NOT_FOUND") {
-        await IndexedDB.deleteCategoryInfo(id as number);
-        return { id, exists: false };
-      }
-      throw e;
-    }
-  },
-});
-
-const storeToIndexedDB = (info: CategoryInfo) => {
-  if (info.id !== "root") {
-    void IndexedDB.storeCategoryInfo(info);
-
-    // TODO: Bulk Upsert
-    new Map(info.files.map((file) => [file.id, file])).forEach((file) => {
-      void IndexedDB.storeFileInfo(file);
-    });
-  }
-
-  // TODO: Bulk Upsert
-  info.subCategories.forEach((category) => {
-    void IndexedDB.storeCategoryInfo(category);
-  });
-
-  void IndexedDB.deleteDanglingCategoryInfos(
-    info.id,
-    new Set(info.subCategories.map(({ id }) => id)),
-  );
-
-  return { ...info, exists: true as const };
-};
-
-export const getCategoryInfo = (id: CategoryId, masterKey: CryptoKey) => {
-  return cache.get(id, masterKey);
-};

src/lib/modules/filesystem/directory.ts

@@ -1,102 +0,0 @@
-import * as IndexedDB from "$lib/indexedDB";
-import { trpc, isTRPCClientError } from "$trpc/client";
-import { FilesystemCache, decryptDirectoryMetadata, decryptFileMetadata } from "./internal.svelte";
-import type { DirectoryInfo, MaybeDirectoryInfo } from "./types";
-
-const cache = new FilesystemCache<DirectoryId, MaybeDirectoryInfo>({
-  async fetchFromIndexedDB(id) {
-    const [directory, subDirectories, files] = await Promise.all([
-      id !== "root" ? IndexedDB.getDirectoryInfo(id) : undefined,
-      IndexedDB.getDirectoryInfos(id),
-      IndexedDB.getFileInfos(id),
-    ]);
-
-    if (id === "root") {
-      return {
-        id,
-        exists: true,
-        subDirectories,
-        files,
-      };
-    } else if (directory) {
-      return {
-        id,
-        exists: true,
-        parentId: directory.parentId,
-        name: directory.name,
-        subDirectories,
-        files,
-      };
-    }
-  },
-
-  async fetchFromServer(id, _cachedInfo, masterKey) {
-    try {
-      const directory = await trpc().directory.get.query({ id });
-      const [subDirectories, files, metadata] = await Promise.all([
-        Promise.all(
-          directory.subDirectories.map(async (directory) => ({
-            id: directory.id,
-            parentId: id,
-            ...(await decryptDirectoryMetadata(directory, masterKey)),
-          })),
-        ),
-        Promise.all(
-          directory.files.map(async (file) => ({
-            id: file.id,
-            parentId: id,
-            contentType: file.contentType,
-            ...(await decryptFileMetadata(file, masterKey)),
-          })),
-        ),
-        directory.metadata && decryptDirectoryMetadata(directory.metadata, masterKey),
-      ]);
-
-      return storeToIndexedDB(
-        id !== "root"
-          ? {
-              id,
-              parentId: directory.metadata!.parent,
-              subDirectories,
-              files,
-              ...metadata!,
-            }
-          : { id, subDirectories, files },
-      );
-    } catch (e) {
-      if (isTRPCClientError(e) && e.data?.code === "NOT_FOUND") {
-        await IndexedDB.deleteDirectoryInfo(id as number);
-        return { id, exists: false as const };
-      }
-      throw e;
-    }
-  },
-});
-
-const storeToIndexedDB = (info: DirectoryInfo) => {
-  if (info.id !== "root") {
-    void IndexedDB.storeDirectoryInfo(info);
-  }
-
-  // TODO: Bulk Upsert
-  info.subDirectories.forEach((subDirectory) => {
-    void IndexedDB.storeDirectoryInfo(subDirectory);
-  });
-
-  // TODO: Bulk Upsert
-  info.files.forEach((file) => {
-    void IndexedDB.storeFileInfo(file);
-  });
-
-  void IndexedDB.deleteDanglingDirectoryInfos(
-    info.id,
-    new Set(info.subDirectories.map(({ id }) => id)),
-  );
-  void IndexedDB.deleteDanglingFileInfos(info.id, new Set(info.files.map(({ id }) => id)));
-
-  return { ...info, exists: true as const };
-};
-
-export const getDirectoryInfo = (id: DirectoryId, masterKey: CryptoKey) => {
-  return cache.get(id, masterKey);
-};

src/lib/modules/filesystem/file.ts

@@ -1,177 +0,0 @@
-import * as IndexedDB from "$lib/indexedDB";
-import { trpc, isTRPCClientError } from "$trpc/client";
-import { FilesystemCache, decryptFileMetadata, decryptCategoryMetadata } from "./internal.svelte";
-import type { FileInfo, MaybeFileInfo } from "./types";
-
-const cache = new FilesystemCache<number, MaybeFileInfo>({
-  async fetchFromIndexedDB(id) {
-    const file = await IndexedDB.getFileInfo(id);
-    const categories = file?.categoryIds
-      ? await Promise.all(
-          file.categoryIds.map(async (categoryId) => {
-            const category = await IndexedDB.getCategoryInfo(categoryId);
-            return category
-              ? { id: category.id, parentId: category.parentId, name: category.name }
-              : undefined;
-          }),
-        )
-      : undefined;
-
-    if (file) {
-      return {
-        id,
-        exists: true,
-        parentId: file.parentId,
-        contentType: file.contentType,
-        name: file.name,
-        createdAt: file.createdAt,
-        lastModifiedAt: file.lastModifiedAt,
-        categories: categories?.filter((category) => !!category) ?? [],
-      };
-    }
-  },
-
-  async fetchFromServer(id, _cachedInfo, masterKey) {
-    try {
-      const file = await trpc().file.get.query({ id });
-      const [categories, metadata] = await Promise.all([
-        Promise.all(
-          file.categories.map(async (category) => ({
-            id: category.id,
-            parentId: category.parent,
-            ...(await decryptCategoryMetadata(category, masterKey)),
-          })),
-        ),
-        decryptFileMetadata(file, masterKey),
-      ]);
-
-      return storeToIndexedDB({
-        id,
-        isLegacy: file.isLegacy,
-        parentId: file.parent,
-        dataKey: metadata.dataKey,
-        contentType: file.contentType,
-        name: metadata.name,
-        createdAt: metadata.createdAt,
-        lastModifiedAt: metadata.lastModifiedAt,
-        categories,
-      });
-    } catch (e) {
-      if (isTRPCClientError(e) && e.data?.code === "NOT_FOUND") {
-        await IndexedDB.deleteFileInfo(id);
-        return { id, exists: false as const };
-      }
-      throw e;
-    }
-  },
-
-  async bulkFetchFromIndexedDB(ids) {
-    const files = await IndexedDB.bulkGetFileInfos([...ids]);
-    const categories = await Promise.all(
-      files.map(async (file) =>
-        file?.categoryIds
-          ? await Promise.all(
-              file.categoryIds.map(async (categoryId) => {
-                const category = await IndexedDB.getCategoryInfo(categoryId);
-                return category
-                  ? { id: category.id, parentId: category.parentId, name: category.name }
-                  : undefined;
-              }),
-            )
-          : undefined,
-      ),
-    );
-
-    return new Map(
-      files
-        .filter((file) => !!file)
-        .map((file, index) => [
-          file.id,
-          {
-            ...file,
-            exists: true,
-            categories: categories[index]?.filter((category) => !!category) ?? [],
-          },
-        ]),
-    );
-  },
-
-  async bulkFetchFromServer(ids, masterKey) {
-    const idsArray = [...ids.keys()];
-
-    const filesRaw = await trpc().file.bulkGet.query({ ids: idsArray });
-    const files = await Promise.all(
-      filesRaw.map(async ({ id, categories: categoriesRaw, ...metadataRaw }) => {
-        const [categories, metadata] = await Promise.all([
-          Promise.all(
-            categoriesRaw.map(async (category) => ({
-              id: category.id,
-              parentId: category.parent,
-              ...(await decryptCategoryMetadata(category, masterKey)),
-            })),
-          ),
-          decryptFileMetadata(metadataRaw, masterKey),
-        ]);
-
-        return {
-          id,
-          exists: true as const,
-          isLegacy: metadataRaw.isLegacy,
-          parentId: metadataRaw.parent,
-          contentType: metadataRaw.contentType,
-          categories,
-          ...metadata,
-        };
-      }),
-    );
-
-    const existingIds = new Set(filesRaw.map(({ id }) => id));
-    const deletedIds = idsArray.filter((id) => !existingIds.has(id));
-
-    void IndexedDB.bulkDeleteFileInfos(deletedIds);
-    return new Map<number, MaybeFileInfo>([
-      ...bulkStoreToIndexedDB(files),
-      ...deletedIds.map((id) => [id, { id, exists: false }] as const),
-    ]);
-  },
-});
-
-const storeToIndexedDB = (info: FileInfo) => {
-  void IndexedDB.storeFileInfo({
-    ...info,
-    categoryIds: info.categories.map(({ id }) => id),
-  });
-
-  info.categories.forEach((category) => {
-    void IndexedDB.storeCategoryInfo(category);
-  });
-
-  return { ...info, exists: true as const };
-};
-
-const bulkStoreToIndexedDB = (infos: FileInfo[]) => {
-  // TODO: Bulk Upsert
-  infos.forEach((info) => {
-    void IndexedDB.storeFileInfo({
-      ...info,
-      categoryIds: info.categories.map(({ id }) => id),
-    });
-  });
-
-  // TODO: Bulk Upsert
-  new Map(
-    infos.flatMap(({ categories }) => categories).map((category) => [category.id, category]),
-  ).forEach((category) => {
-    void IndexedDB.storeCategoryInfo(category);
-  });
-
-  return infos.map((info) => [info.id, { ...info, exists: true }] as const);
-};
-
-export const getFileInfo = (id: number, masterKey: CryptoKey) => {
-  return cache.get(id, masterKey);
-};
-
-export const bulkGetFileInfo = (ids: number[], masterKey: CryptoKey) => {
-  return cache.bulkGet(new Set(ids), masterKey);
-};

src/lib/modules/filesystem/index.ts

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

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

@@ -1,172 +0,0 @@
-import { untrack } from "svelte";
-import { unwrapDataKey, decryptString } from "$lib/modules/crypto";
-
-interface FilesystemCacheOptions<K, V> {
-  fetchFromIndexedDB: (key: K) => Promise<V | undefined>;
-  fetchFromServer: (key: K, cachedValue: V | undefined, masterKey: CryptoKey) => Promise<V>;
-  bulkFetchFromIndexedDB?: (keys: Set<K>) => Promise<Map<K, V>>;
-  bulkFetchFromServer?: (
-    keys: Map<K, { cachedValue: V | undefined }>,
-    masterKey: CryptoKey,
-  ) => Promise<Map<K, V>>;
-}
-
-export class FilesystemCache<K, V extends object> {
-  private map = new Map<K, { value?: V; promise?: Promise<V> }>();
-
-  constructor(private readonly options: FilesystemCacheOptions<K, V>) {}
-
-  get(key: K, masterKey: CryptoKey) {
-    return untrack(() => {
-      let state = this.map.get(key);
-      if (state?.promise) return state.value ?? state.promise;
-
-      const { promise: newPromise, resolve } = Promise.withResolvers<V>();
-
-      if (!state) {
-        const newState = $state({});
-        state = newState;
-        this.map.set(key, newState);
-      }
-
-      (state.value
-        ? Promise.resolve(state.value)
-        : this.options.fetchFromIndexedDB(key).then((loadedInfo) => {
-            if (loadedInfo) {
-              state.value = loadedInfo;
-              resolve(state.value);
-            }
-            return loadedInfo;
-          })
-      )
-        .then((cachedInfo) => this.options.fetchFromServer(key, cachedInfo, masterKey))
-        .then((loadedInfo) => {
-          if (state.value) {
-            Object.assign(state.value, loadedInfo);
-          } else {
-            state.value = loadedInfo;
-          }
-          resolve(state.value);
-        })
-        .finally(() => {
-          state.promise = undefined;
-        });
-
-      state.promise = newPromise;
-      return state.value ?? newPromise;
-    });
-  }
-
-  bulkGet(keys: Set<K>, masterKey: CryptoKey) {
-    return untrack(() => {
-      const newPromises = new Map(
-        keys
-          .keys()
-          .filter((key) => this.map.get(key)?.promise === undefined)
-          .map((key) => [key, Promise.withResolvers<V>()]),
-      );
-      newPromises.forEach(({ promise }, key) => {
-        const state = this.map.get(key);
-        if (state) {
-          state.promise = promise;
-        } else {
-          const newState = $state({ promise });
-          this.map.set(key, newState);
-        }
-      });
-
-      const resolve = (loadedInfos: Map<K, V>) => {
-        loadedInfos.forEach((loadedInfo, key) => {
-          const state = this.map.get(key)!;
-          if (state.value) {
-            Object.assign(state.value, loadedInfo);
-          } else {
-            state.value = loadedInfo;
-          }
-          newPromises.get(key)!.resolve(state.value);
-        });
-        return loadedInfos;
-      };
-
-      this.options.bulkFetchFromIndexedDB!(
-        new Set(newPromises.keys().filter((key) => this.map.get(key)!.value === undefined)),
-      )
-        .then(resolve)
-        .then(() =>
-          this.options.bulkFetchFromServer!(
-            new Map(
-              newPromises.keys().map((key) => [key, { cachedValue: this.map.get(key)!.value }]),
-            ),
-            masterKey,
-          ),
-        )
-        .then(resolve)
-        .finally(() => {
-          newPromises.forEach((_, key) => {
-            this.map.get(key)!.promise = undefined;
-          });
-        });
-
-      const bottleneckPromises = Array.from(
-        keys
-          .keys()
-          .filter((key) => this.map.get(key)!.value === undefined)
-          .map((key) => this.map.get(key)!.promise!),
-      );
-      const makeResult = () =>
-        new Map(keys.keys().map((key) => [key, this.map.get(key)!.value!] as const));
-      return bottleneckPromises.length > 0
-        ? Promise.all(bottleneckPromises).then(makeResult)
-        : makeResult();
-    });
-  }
-}
-
-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

@@ -1,77 +0,0 @@
-export type DataKey = { key: CryptoKey; version: Date };
-type AllUndefined<T> = { [K in keyof T]?: undefined };
-
-interface LocalDirectoryInfo {
-  id: number;
-  parentId: DirectoryId;
-  dataKey?: DataKey;
-  name: string;
-  subDirectories: SubDirectoryInfo[];
-  files: SummarizedFileInfo[];
-}
-
-interface RootDirectoryInfo {
-  id: "root";
-  parentId?: undefined;
-  dataKey?: undefined;
-  name?: undefined;
-  subDirectories: SubDirectoryInfo[];
-  files: SummarizedFileInfo[];
-}
-
-export type DirectoryInfo = LocalDirectoryInfo | RootDirectoryInfo;
-export type MaybeDirectoryInfo =
-  | (DirectoryInfo & { exists: true })
-  | ({ id: DirectoryId; exists: false } & AllUndefined<Omit<DirectoryInfo, "id">>);
-
-export type SubDirectoryInfo = Omit<LocalDirectoryInfo, "subDirectories" | "files">;
-
-export interface FileInfo {
-  id: number;
-  isLegacy?: boolean;
-  parentId: DirectoryId;
-  dataKey?: DataKey;
-  contentType: string;
-  name: string;
-  createdAt?: Date;
-  lastModifiedAt: Date;
-  categories: FileCategoryInfo[];
-}
-
-export type MaybeFileInfo =
-  | (FileInfo & { exists: true })
-  | ({ id: number; exists: false } & AllUndefined<Omit<FileInfo, "id">>);
-
-export type SummarizedFileInfo = Omit<FileInfo, "categories">;
-export type CategoryFileInfo = SummarizedFileInfo & { isRecursive: boolean };
-
-interface LocalCategoryInfo {
-  id: number;
-  parentId: DirectoryId;
-  dataKey?: DataKey;
-  name: string;
-  subCategories: SubCategoryInfo[];
-  files: CategoryFileInfo[];
-  isFileRecursive: boolean;
-}
-
-interface RootCategoryInfo {
-  id: "root";
-  parentId?: undefined;
-  dataKey?: undefined;
-  name?: undefined;
-  subCategories: SubCategoryInfo[];
-  files?: undefined;
-  isFileRecursive?: undefined;
-}
-
-export type CategoryInfo = LocalCategoryInfo | RootCategoryInfo;
-export type MaybeCategoryInfo =
-  | (CategoryInfo & { exists: true })
-  | ({ id: CategoryId; exists: false } & AllUndefined<Omit<CategoryInfo, "id">>);
-
-export type SubCategoryInfo = Omit<
-  LocalCategoryInfo,
-  "subCategories" | "files" | "isFileRecursive"
->;
-export type FileCategoryInfo = Omit<SubCategoryInfo, "dataKey">;

src/lib/modules/http.ts

@@ -1,22 +0,0 @@
-export const parseRangeHeader = (value: string | null) => {
-  if (!value) return undefined;
-
-  const firstRange = value.split(",")[0]!.trim();
-  const parts = firstRange.replace(/bytes=/, "").split("-");
-  return {
-    start: parts[0] ? parseInt(parts[0], 10) : undefined,
-    end: parts[1] ? parseInt(parts[1], 10) : undefined,
-  };
-};
-
-export const getContentRangeHeader = (range?: { start: number; end: number; total: number }) => {
-  return range && { "Content-Range": `bytes ${range.start}-${range.end}/${range.total}` };
-};
-
-export const parseContentDigestHeader = (value: string | null) => {
-  if (!value) return undefined;
-
-  const firstDigest = value.split(",")[0]!.trim();
-  const match = firstDigest.match(/^sha-256=:([A-Za-z0-9+/=]+):$/);
-  return match?.[1];
-};

src/lib/modules/key.ts

@@ -1,65 +0,0 @@
-import { z } from "zod";
-import { storeClientKey } from "$lib/indexedDB";
-import type { ClientKeys } from "$lib/stores";
-
-const SerializedClientKeysSchema = z.intersection(
-  z.object({
-    generator: z.literal("ArkVault"),
-    exportedAt: z.iso.datetime(),
-  }),
-  z.object({
-    version: z.literal(1),
-    encryptKey: z.base64().nonempty(),
-    decryptKey: z.base64().nonempty(),
-    signKey: z.base64().nonempty(),
-    verifyKey: z.base64().nonempty(),
-  }),
-);
-
-type SerializedClientKeys = z.infer<typeof SerializedClientKeysSchema>;
-
-type DeserializedClientKeys = {
-  encryptKeyBase64: string;
-  decryptKeyBase64: string;
-  signKeyBase64: string;
-  verifyKeyBase64: string;
-};
-
-export const serializeClientKeys = ({
-  encryptKeyBase64,
-  decryptKeyBase64,
-  signKeyBase64,
-  verifyKeyBase64,
-}: DeserializedClientKeys) => {
-  return JSON.stringify({
-    version: 1,
-    generator: "ArkVault",
-    exportedAt: new Date().toISOString(),
-    encryptKey: encryptKeyBase64,
-    decryptKey: decryptKeyBase64,
-    signKey: signKeyBase64,
-    verifyKey: verifyKeyBase64,
-  } satisfies SerializedClientKeys);
-};
-
-export const deserializeClientKeys = (serialized: string) => {
-  const zodRes = SerializedClientKeysSchema.safeParse(JSON.parse(serialized));
-  if (zodRes.success) {
-    return {
-      encryptKeyBase64: zodRes.data.encryptKey,
-      decryptKeyBase64: zodRes.data.decryptKey,
-      signKeyBase64: zodRes.data.signKey,
-      verifyKeyBase64: zodRes.data.verifyKey,
-    } satisfies DeserializedClientKeys;
-  }
-  return undefined;
-};
-
-export const storeClientKeys = async (clientKeys: ClientKeys) => {
-  await Promise.all([
-    storeClientKey(clientKeys.encryptKey, "encrypt"),
-    storeClientKey(clientKeys.decryptKey, "decrypt"),
-    storeClientKey(clientKeys.signKey, "sign"),
-    storeClientKey(clientKeys.verifyKey, "verify"),
-  ]);
-};

src/lib/modules/opfs.ts

@@ -1,5 +1,13 @@
+let rootHandle: FileSystemDirectoryHandle | null = null;
+
+export const prepareOpfs = async () => {
+  rootHandle = await navigator.storage.getDirectory();
+};
+
 const getFileHandle = async (path: string, create = true) => {
-  if (path[0] !== "/") {
+  if (!rootHandle) {
+    throw new Error("OPFS not prepared");
+  } else if (path[0] !== "/") {
     throw new Error("Path must be absolute");
   }
 
@@ -9,7 +17,7 @@ const getFileHandle = async (path: string, create = true) => {
   }
 
   try {
-    let directoryHandle = await navigator.storage.getDirectory();
+    let directoryHandle = rootHandle;
     for (const part of parts.slice(0, -1)) {
       if (!part) continue;
       directoryHandle = await directoryHandle.getDirectoryHandle(part, { create });
@@ -26,15 +34,12 @@ const getFileHandle = async (path: string, create = true) => {
   }
 };
 
-export const getFile = async (path: string) => {
+export const readFile = async (path: string) => {
   const { fileHandle } = await getFileHandle(path, false);
   if (!fileHandle) return null;
 
-  return await fileHandle.getFile();
-};
-
-export const readFile = async (path: string) => {
-  return (await getFile(path))?.arrayBuffer() ?? null;
+  const file = await fileHandle.getFile();
+  return await file.arrayBuffer();
 };
 
 export const writeFile = async (path: string, data: ArrayBuffer) => {
@@ -54,37 +59,3 @@ export const deleteFile = async (path: string) => {
 
   await parentHandle.removeEntry(filename);
 };
-
-const getDirectoryHandle = async (path: string) => {
-  if (path[0] !== "/") {
-    throw new Error("Path must be absolute");
-  }
-
-  const parts = path.split("/");
-  if (parts.length <= 1) {
-    throw new Error("Invalid path");
-  }
-
-  try {
-    let directoryHandle = await navigator.storage.getDirectory();
-    let parentHandle;
-    for (const part of parts.slice(1)) {
-      if (!part) continue;
-      parentHandle = directoryHandle;
-      directoryHandle = await directoryHandle.getDirectoryHandle(part);
-    }
-    return { directoryHandle, parentHandle };
-  } catch (e) {
-    if (e instanceof DOMException && e.name === "NotFoundError") {
-      return {};
-    }
-    throw e;
-  }
-};
-
-export const deleteDirectory = async (path: string) => {
-  const { directoryHandle, parentHandle } = await getDirectoryHandle(path);
-  if (!parentHandle) return;
-
-  await parentHandle.removeEntry(directoryHandle.name, { recursive: true });
-};

src/lib/modules/scheduler.ts

@@ -1,48 +0,0 @@
-export class Scheduler<T = void> {
-  private isEstimating = false;
-  private memoryUsage = 0;
-  private queue: (() => void)[] = [];
-
-  constructor(public readonly memoryLimit = 100 * 1024 * 1024 /* 100 MiB */) {}
-
-  private next() {
-    if (!this.isEstimating && this.memoryUsage < this.memoryLimit) {
-      const resolve = this.queue.shift();
-      if (resolve) {
-        this.isEstimating = true;
-        resolve();
-      }
-    }
-  }
-
-  async schedule(
-    estimateMemoryUsage: number | (() => number | Promise<number>),
-    task: () => Promise<T>,
-  ) {
-    if (this.isEstimating || this.memoryUsage >= this.memoryLimit) {
-      await new Promise<void>((resolve) => {
-        this.queue.push(resolve);
-      });
-    } else {
-      this.isEstimating = true;
-    }
-
-    let taskMemoryUsage = 0;
-
-    try {
-      taskMemoryUsage =
-        typeof estimateMemoryUsage === "number" ? estimateMemoryUsage : await estimateMemoryUsage();
-      this.memoryUsage += taskMemoryUsage;
-    } finally {
-      this.isEstimating = false;
-      this.next();
-    }
-
-    try {
-      return await task();
-    } finally {
-      this.memoryUsage -= taskMemoryUsage;
-      this.next();
-    }
-  }
-}

src/lib/modules/thumbnail.ts

@@ -1,143 +0,0 @@
-import { encodeToBase64 } from "$lib/modules/crypto";
-
-const scaleSize = (width: number, height: number, targetSize: number) => {
-  if (width <= targetSize || height <= targetSize) {
-    return { width, height };
-  }
-
-  const scale = targetSize / Math.min(width, height);
-  return {
-    width: Math.round(width * scale),
-    height: Math.round(height * scale),
-  };
-};
-
-const capture = (
-  width: number,
-  height: number,
-  drawer: (context: CanvasRenderingContext2D, width: number, height: number) => void,
-  targetSize = 250,
-) => {
-  return new Promise<Blob>((resolve, reject) => {
-    const canvas = document.createElement("canvas");
-    const { width: scaledWidth, height: scaledHeight } = scaleSize(width, height, targetSize);
-
-    canvas.width = scaledWidth;
-    canvas.height = scaledHeight;
-
-    const context = canvas.getContext("2d");
-    if (!context) {
-      return reject(new Error("Failed to generate thumbnail"));
-    }
-
-    drawer(context, scaledWidth, scaledHeight);
-    canvas.toBlob((blob) => {
-      if (blob && blob.type === "image/webp") {
-        resolve(blob);
-      } else {
-        reject(new Error("Failed to generate thumbnail"));
-      }
-    }, "image/webp");
-  });
-};
-
-const generateImageThumbnail = (imageUrl: string) => {
-  return new Promise<Blob>((resolve, reject) => {
-    const image = new Image();
-    image.onload = () => {
-      capture(image.width, image.height, (context, width, height) => {
-        context.drawImage(image, 0, 0, width, height);
-      })
-        .then(resolve)
-        .catch(reject);
-    };
-    image.onerror = reject;
-
-    image.src = imageUrl;
-  });
-};
-
-export const captureVideoThumbnail = (video: HTMLVideoElement) => {
-  return capture(video.videoWidth, video.videoHeight, (context, width, height) => {
-    context.drawImage(video, 0, 0, width, height);
-  });
-};
-
-const generateVideoThumbnail = (videoUrl: string, time = 0) => {
-  return new Promise<Blob>((resolve, reject) => {
-    const video = document.createElement("video");
-    video.onloadedmetadata = () => {
-      if (video.videoWidth === 0 || video.videoHeight === 0) {
-        return reject();
-      }
-
-      const callbackId = video.requestVideoFrameCallback(() => {
-        captureVideoThumbnail(video).then(resolve).catch(reject);
-        video.cancelVideoFrameCallback(callbackId);
-      });
-      video.currentTime = Math.min(time, video.duration);
-    };
-    video.onerror = reject;
-
-    video.muted = true;
-    video.playsInline = true;
-    video.src = videoUrl;
-  });
-};
-
-export const generateThumbnail = async (fileBuffer: ArrayBuffer, fileType: string) => {
-  let url;
-  try {
-    if (fileType.startsWith("image/")) {
-      const fileBlob = new Blob([fileBuffer], { type: fileType });
-      url = URL.createObjectURL(fileBlob);
-
-      try {
-        return await generateImageThumbnail(url);
-      } catch {
-        URL.revokeObjectURL(url);
-        url = undefined;
-
-        if (fileType === "image/heic") {
-          const { default: heic2any } = await import("heic2any");
-          url = URL.createObjectURL(
-            (await heic2any({ blob: fileBlob, toType: "image/png" })) as Blob,
-          );
-          return await generateImageThumbnail(url);
-        } else {
-          return null;
-        }
-      }
-    } else if (fileType.startsWith("video/")) {
-      url = URL.createObjectURL(new Blob([fileBuffer], { type: fileType }));
-      return await generateVideoThumbnail(url);
-    }
-    return null;
-  } catch {
-    return null;
-  } finally {
-    if (url) {
-      URL.revokeObjectURL(url);
-    }
-  }
-};
-
-export const generateThumbnailFromFile = async (file: File) => {
-  if (!file.type.startsWith("video/")) return null;
-
-  let url;
-  try {
-    url = URL.createObjectURL(file);
-    return await generateVideoThumbnail(url);
-  } catch {
-    return null;
-  } finally {
-    if (url) {
-      URL.revokeObjectURL(url);
-    }
-  }
-};
-
-export const getThumbnailUrl = (thumbnailBuffer: ArrayBuffer) => {
-  return `data:image/webp;base64,${encodeToBase64(thumbnailBuffer)}`;
-};

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/schemas/filesystem.ts

@@ -1,4 +0,0 @@
-import { z } from "zod";
-
-export const DirectoryIdSchema = z.union([z.literal("root"), z.int().positive()]);
-export const CategoryIdSchema = z.union([z.literal("root"), z.int().positive()]);

src/lib/schemas/index.ts

@@ -1 +0,0 @@
-export * from "./filesystem";

src/lib/server/db/category.ts

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

src/lib/server/db/client.ts

@@ -98,6 +98,22 @@ export const createUserClient = async (userId: number, clientId: number) => {
   }
 };
 
+export const getAllUserClients = async (userId: number) => {
+  const userClients = await db
+    .selectFrom("user_client")
+    .selectAll()
+    .where("user_id", "=", userId)
+    .execute();
+  return userClients.map(
+    ({ user_id, client_id, state }) =>
+      ({
+        userId: user_id,
+        clientId: client_id,
+        state,
+      }) satisfies UserClient,
+  );
+};
+
 export const getUserClient = async (userId: number, clientId: number) => {
   const userClient = await db
     .selectFrom("user_client")
@@ -162,7 +178,7 @@ export const registerUserClientChallenge = async (
   allowedIp: string,
   expiresAt: Date,
 ) => {
-  const { id } = await db
+  await db
     .insertInto("user_client_challenge")
     .values({
       user_id: userId,
@@ -171,25 +187,19 @@ export const registerUserClientChallenge = async (
       allowed_ip: allowedIp,
       expires_at: expiresAt,
     })
-    .returning("id")
-    .executeTakeFirstOrThrow();
-  return { id };
+    .execute();
 };
 
-export const consumeUserClientChallenge = async (
-  challengeId: number,
-  userId: number,
-  ip: string,
-) => {
+export const consumeUserClientChallenge = async (userId: number, answer: string, ip: string) => {
   const challenge = await db
     .deleteFrom("user_client_challenge")
-    .where("id", "=", challengeId)
     .where("user_id", "=", userId)
+    .where("answer", "=", answer)
     .where("allowed_ip", "=", ip)
     .where("expires_at", ">", new Date())
-    .returning(["client_id", "answer"])
+    .returning("client_id")
     .executeTakeFirst();
-  return challenge ? { clientId: challenge.client_id, answer: challenge.answer } : null;
+  return challenge ? { clientId: challenge.client_id } : null;
 };
 
 export const cleanupExpiredUserClientChallenges = async () => {

src/lib/server/db/file.ts

@@ -1,10 +1,11 @@
-import { sql } from "kysely";
-import { jsonArrayFrom } from "kysely/helpers/postgres";
+import { sql, type NotNull } from "kysely";
 import pg from "pg";
 import { IntegrityError } from "./error";
 import db from "./kysely";
 import type { Ciphertext } from "./schema";
 
+export type DirectoryId = "root" | number;
+
 interface Directory {
   id: number;
   parentId: DirectoryId;
@@ -15,6 +16,8 @@ interface Directory {
   encName: Ciphertext;
 }
 
+export type NewDirectory = Omit<Directory, "id">;
+
 interface File {
   id: number;
   parentId: DirectoryId;
@@ -26,23 +29,16 @@ interface File {
   hskVersion: number | null;
   contentHmac: string | null;
   contentType: string;
-  encContentIv: string | null;
+  encContentIv: string;
   encContentHash: string;
   encName: Ciphertext;
   encCreatedAt: Ciphertext | null;
   encLastModifiedAt: Ciphertext;
 }
 
-interface FileCategory {
-  id: number;
-  parentId: CategoryId;
-  mekVersion: number;
-  encDek: string;
-  dekVersion: Date;
-  encName: Ciphertext;
-}
+export type NewFile = Omit<File, "id">;
 
-export const registerDirectory = async (params: Omit<Directory, "id">) => {
+export const registerDirectory = async (params: NewDirectory) => {
   await db.transaction().execute(async (trx) => {
     const mek = await trx
       .selectFrom("master_encryption_key")
@@ -167,24 +163,16 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
     .setIsolationLevel("repeatable read") // TODO: Sufficient?
     .execute(async (trx) => {
       const unregisterFiles = async (parentId: number) => {
-        const files = await trx
-          .selectFrom("file")
-          .leftJoin("thumbnail", "file.id", "thumbnail.file_id")
-          .select(["file.id", "file.path", "thumbnail.path as thumbnailPath"])
-          .where("file.parent_id", "=", parentId)
-          .where("file.user_id", "=", userId)
-          .forUpdate("file")
-          .execute();
-        await trx
+        return await trx
           .deleteFrom("file")
           .where("parent_id", "=", parentId)
           .where("user_id", "=", userId)
+          .returning(["id", "path"])
           .execute();
-        return files;
       };
       const unregisterDirectoryRecursively = async (
         directoryId: number,
-      ): Promise<{ id: number; path: string; thumbnailPath: string | null }[]> => {
+      ): Promise<{ id: number; path: string }[]> => {
         const files = await unregisterFiles(directoryId);
         const subDirectories = await trx
           .selectFrom("directory")
@@ -210,41 +198,69 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
     });
 };
 
-export const registerFile = async (trx: typeof db, params: Omit<File, "id">) => {
+export const registerFile = async (params: NewFile) => {
   if ((params.hskVersion && !params.contentHmac) || (!params.hskVersion && params.contentHmac)) {
     throw new Error("Invalid arguments");
   }
 
-  const { fileId } = await trx
-    .insertInto("file")
-    .values({
-      parent_id: params.parentId !== "root" ? params.parentId : null,
-      user_id: params.userId,
-      path: params.path,
-      master_encryption_key_version: params.mekVersion,
-      encrypted_data_encryption_key: params.encDek,
-      data_encryption_key_version: params.dekVersion,
-      hmac_secret_key_version: params.hskVersion,
-      content_hmac: params.contentHmac,
-      content_type: params.contentType,
-      encrypted_content_iv: params.encContentIv,
-      encrypted_content_hash: params.encContentHash,
-      encrypted_name: params.encName,
-      encrypted_created_at: params.encCreatedAt,
-      encrypted_last_modified_at: params.encLastModifiedAt,
-    })
-    .returning("id as fileId")
-    .executeTakeFirstOrThrow();
-  await trx
-    .insertInto("file_log")
-    .values({
-      file_id: fileId,
-      timestamp: new Date(),
-      action: "create",
-      new_name: params.encName,
-    })
-    .execute();
-  return { id: fileId };
+  return await db.transaction().execute(async (trx) => {
+    const mek = await trx
+      .selectFrom("master_encryption_key")
+      .select("version")
+      .where("user_id", "=", params.userId)
+      .where("state", "=", "active")
+      .limit(1)
+      .forUpdate()
+      .executeTakeFirst();
+    if (mek?.version !== params.mekVersion) {
+      throw new IntegrityError("Inactive MEK version");
+    }
+
+    if (params.hskVersion) {
+      const hsk = await trx
+        .selectFrom("hmac_secret_key")
+        .select("version")
+        .where("user_id", "=", params.userId)
+        .where("state", "=", "active")
+        .limit(1)
+        .forUpdate()
+        .executeTakeFirst();
+      if (hsk?.version !== params.hskVersion) {
+        throw new IntegrityError("Inactive HSK version");
+      }
+    }
+
+    const { fileId } = await trx
+      .insertInto("file")
+      .values({
+        parent_id: params.parentId !== "root" ? params.parentId : null,
+        user_id: params.userId,
+        path: params.path,
+        master_encryption_key_version: params.mekVersion,
+        encrypted_data_encryption_key: params.encDek,
+        data_encryption_key_version: params.dekVersion,
+        hmac_secret_key_version: params.hskVersion,
+        content_hmac: params.contentHmac,
+        content_type: params.contentType,
+        encrypted_content_iv: params.encContentIv,
+        encrypted_content_hash: params.encContentHash,
+        encrypted_name: params.encName,
+        encrypted_created_at: params.encCreatedAt,
+        encrypted_last_modified_at: params.encLastModifiedAt,
+      })
+      .returning("id as fileId")
+      .executeTakeFirstOrThrow();
+    await trx
+      .insertInto("file_log")
+      .values({
+        file_id: fileId,
+        timestamp: new Date(),
+        action: "create",
+        new_name: params.encName,
+      })
+      .execute();
+    return { id: fileId };
+  });
 };
 
 export const getAllFilesByParent = async (userId: number, parentId: DirectoryId) => {
@@ -282,56 +298,38 @@ 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)
         .$if(recurse, (qb) =>
           qb.unionAll((db) =>
             db
               .selectFrom("category")
-              .innerJoin("category_tree", "category.parent_id", "category_tree.id")
-              .select(["category.id", sql<number>`depth + 1`.as("depth")]),
+              .leftJoin("file_category", "category.id", "file_category.category_id")
+              .innerJoin("cte", "category.parent_id", "cte.id")
+              .select([
+                "category.id",
+                "category.parent_id",
+                "category.user_id",
+                "file_category.file_id",
+              ])
+              .select(sql<number>`cte.depth + 1`.as("depth")),
           ),
         ),
     )
-    .selectFrom("category_tree")
-    .innerJoin("file_category", "category_tree.id", "file_category.category_id")
-    .innerJoin("file", "file_category.file_id", "file.id")
+    .selectFrom("cte")
     .select(["file_id", "depth"])
-    .selectAll("file")
     .distinctOn("file_id")
-    .orderBy("file_id")
-    .orderBy("depth")
+    .where("user_id", "=", userId)
+    .where("file_id", "is not", null)
+    .$narrowType<{ file_id: NotNull }>()
+    .orderBy(["file_id", "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 },
-  );
-};
-
-export const getAllFileIds = async (userId: number) => {
-  const files = await db.selectFrom("file").select("id").where("user_id", "=", userId).execute();
-  return files.map(({ id }) => id);
+  return files.map(({ file_id, depth }) => ({ id: file_id, isRecursive: depth > 0 }));
 };
 
 export const getAllFileIdsByContentHmac = async (
@@ -346,7 +344,7 @@ export const getAllFileIdsByContentHmac = async (
     .where("hmac_secret_key_version", "=", hskVersion)
     .where("content_hmac", "=", contentHmac)
     .execute();
-  return files.map(({ id }) => id);
+  return files.map(({ id }) => ({ id }));
 };
 
 export const getFile = async (userId: number, fileId: number) => {
@@ -378,52 +376,6 @@ export const getFile = async (userId: number, fileId: number) => {
     : null;
 };
 
-export const getFilesWithCategories = async (userId: number, fileIds: number[]) => {
-  const files = await db
-    .selectFrom("file")
-    .selectAll()
-    .select((eb) =>
-      jsonArrayFrom(
-        eb
-          .selectFrom("file_category")
-          .innerJoin("category", "file_category.category_id", "category.id")
-          .where("file_category.file_id", "=", eb.ref("file.id"))
-          .selectAll("category"),
-      ).as("categories"),
-    )
-    .where("id", "=", (eb) => eb.fn.any(eb.val(fileIds)))
-    .where("user_id", "=", userId)
-    .execute();
-  return files.map(
-    (file) =>
-      ({
-        id: file.id,
-        parentId: file.parent_id ?? "root",
-        userId: file.user_id,
-        path: file.path,
-        mekVersion: file.master_encryption_key_version,
-        encDek: file.encrypted_data_encryption_key,
-        dekVersion: file.data_encryption_key_version,
-        hskVersion: file.hmac_secret_key_version,
-        contentHmac: file.content_hmac,
-        contentType: file.content_type,
-        encContentIv: file.encrypted_content_iv,
-        encContentHash: file.encrypted_content_hash,
-        encName: file.encrypted_name,
-        encCreatedAt: file.encrypted_created_at,
-        encLastModifiedAt: file.encrypted_last_modified_at,
-        categories: file.categories.map((category) => ({
-          id: category.id,
-          parentId: category.parent_id ?? "root",
-          mekVersion: category.master_encryption_key_version,
-          encDek: category.encrypted_data_encryption_key,
-          dekVersion: new Date(category.data_encryption_key_version),
-          encName: category.encrypted_name,
-        })),
-      }) satisfies File & { categories: FileCategory[] },
-  );
-};
-
 export const setFileEncName = async (
   userId: number,
   fileId: number,
@@ -464,22 +416,16 @@ export const setFileEncName = async (
 };
 
 export const unregisterFile = async (userId: number, fileId: number) => {
-  return await db.transaction().execute(async (trx) => {
-    const file = await trx
-      .selectFrom("file")
-      .leftJoin("thumbnail", "file.id", "thumbnail.file_id")
-      .select(["file.path", "thumbnail.path as thumbnailPath"])
-      .where("file.id", "=", fileId)
-      .where("file.user_id", "=", userId)
-      .forUpdate("file")
-      .executeTakeFirst();
-    if (!file) {
-      throw new IntegrityError("File not found");
-    }
-
-    await trx.deleteFrom("file").where("id", "=", fileId).execute();
-    return file;
-  });
+  const file = await db
+    .deleteFrom("file")
+    .where("id", "=", fileId)
+    .where("user_id", "=", userId)
+    .returning("path")
+    .executeTakeFirst();
+  if (!file) {
+    throw new IntegrityError("File not found");
+  }
+  return { path: file.path };
 };
 
 export const addFileToCategory = async (fileId: number, categoryId: number) => {
@@ -510,21 +456,10 @@ 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,
-        parentId: category.parent_id ?? "root",
-        mekVersion: category.master_encryption_key_version,
-        encDek: category.encrypted_data_encryption_key,
-        dekVersion: category.data_encryption_key_version,
-        encName: category.encrypted_name,
-      }) satisfies FileCategory,
-  );
+  return categories.map(({ category_id }) => ({ id: category_id }));
 };
 
 export const removeFileFromCategory = async (fileId: number, categoryId: number) => {

src/lib/server/db/index.ts

@@ -1,11 +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 UploadRepo from "./upload";
-export * as UserRepo from "./user";
-
-export * from "./error";

src/lib/server/db/media.ts

@@ -1,109 +0,0 @@
-import type { NotNull } from "kysely";
-import { IntegrityError } from "./error";
-import db from "./kysely";
-
-interface Thumbnail {
-  id: number;
-  path: string;
-  updatedAt: Date;
-  encContentIv: string | null;
-}
-
-interface FileThumbnail extends Thumbnail {
-  fileId: number;
-}
-
-export const updateFileThumbnail = async (
-  trx: typeof db,
-  userId: number,
-  fileId: number,
-  dekVersion: Date,
-  path: string,
-  encContentIv: string | null,
-) => {
-  const file = await trx
-    .selectFrom("file")
-    .select("data_encryption_key_version")
-    .where("id", "=", fileId)
-    .where("user_id", "=", userId)
-    .limit(1)
-    .forUpdate()
-    .executeTakeFirst();
-  if (!file) {
-    throw new IntegrityError("File not found");
-  } else if (file.data_encryption_key_version.getTime() !== dekVersion.getTime()) {
-    throw new IntegrityError("Invalid DEK version");
-  }
-
-  const thumbnail = await trx
-    .selectFrom("thumbnail")
-    .select("path as oldPath")
-    .where("file_id", "=", fileId)
-    .limit(1)
-    .forUpdate()
-    .executeTakeFirst();
-  const now = new Date();
-
-  await trx
-    .insertInto("thumbnail")
-    .values({
-      file_id: fileId,
-      path,
-      updated_at: now,
-      encrypted_content_iv: encContentIv,
-    })
-    .onConflict((oc) =>
-      oc.column("file_id").doUpdateSet({
-        path,
-        updated_at: now,
-        encrypted_content_iv: encContentIv,
-      }),
-    )
-    .execute();
-  return thumbnail?.oldPath ?? null;
-};
-
-export const getFileThumbnail = async (userId: number, fileId: number) => {
-  const thumbnail = await db
-    .selectFrom("thumbnail")
-    .innerJoin("file", "thumbnail.file_id", "file.id")
-    .selectAll("thumbnail")
-    .where("file.id", "=", fileId)
-    .where("file.user_id", "=", userId)
-    .$narrowType<{ file_id: NotNull }>()
-    .limit(1)
-    .executeTakeFirst();
-  return thumbnail
-    ? ({
-        id: thumbnail.id,
-        fileId: thumbnail.file_id,
-        path: thumbnail.path,
-        encContentIv: thumbnail.encrypted_content_iv,
-        updatedAt: thumbnail.updated_at,
-      } satisfies FileThumbnail)
-    : null;
-};
-
-export const getMissingFileThumbnails = async (userId: number, limit: number = 100) => {
-  const files = await db
-    .selectFrom("file")
-    .select("id")
-    .where("user_id", "=", userId)
-    .where((eb) =>
-      eb.or([eb("content_type", "like", "image/%"), eb("content_type", "like", "video/%")]),
-    )
-    .where((eb) =>
-      eb.not(
-        eb.exists(
-          eb
-            .selectFrom("thumbnail")
-            .select("thumbnail.id")
-            .whereRef("thumbnail.file_id", "=", "file.id")
-            .limit(1),
-        ),
-      ),
-    )
-    .limit(limit)
-    .execute();
-  return files.map(({ id }) => id);
-};

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/migrations/1738409340-AddThumbnail.ts

@@ -1,31 +0,0 @@
-import { Kysely, sql } from "kysely";
-
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-export const up = async (db: Kysely<any>) => {
-  // media.ts
-  await db.schema
-    .createTable("thumbnail")
-    .addColumn("id", "integer", (col) => col.primaryKey().generatedAlwaysAsIdentity())
-    .addColumn("directory_id", "integer", (col) =>
-      col.references("directory.id").onDelete("cascade").unique(),
-    )
-    .addColumn("file_id", "integer", (col) =>
-      col.references("file.id").onDelete("cascade").unique(),
-    )
-    .addColumn("category_id", "integer", (col) =>
-      col.references("category.id").onDelete("cascade").unique(),
-    )
-    .addColumn("path", "text", (col) => col.unique().notNull())
-    .addColumn("updated_at", "timestamp(3)", (col) => col.notNull())
-    .addColumn("encrypted_content_iv", "text", (col) => col.notNull())
-    .addCheckConstraint(
-      "thumbnail_ck01",
-      sql`(file_id IS NOT NULL)::integer + (directory_id IS NOT NULL)::integer + (category_id IS NOT NULL)::integer = 1`,
-    )
-    .execute();
-};
-
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-export const down = async (db: Kysely<any>) => {
-  await db.schema.dropTable("thumbnail").execute();
-};

src/lib/server/db/migrations/1768062380-AddChunkedUpload.ts

@@ -1,63 +0,0 @@
-import { Kysely, sql } from "kysely";
-
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-export const up = async (db: Kysely<any>) => {
-  // file.ts
-  await db.schema
-    .alterTable("file")
-    .alterColumn("encrypted_content_iv", (col) => col.dropNotNull())
-    .execute();
-
-  // media.ts
-  await db.schema
-    .alterTable("thumbnail")
-    .alterColumn("encrypted_content_iv", (col) => col.dropNotNull())
-    .execute();
-
-  // upload.ts
-  await db.schema
-    .createTable("upload_session")
-    .addColumn("id", "uuid", (col) => col.primaryKey())
-    .addColumn("type", "text", (col) => col.notNull())
-    .addColumn("user_id", "integer", (col) => col.references("user.id").notNull())
-    .addColumn("path", "text", (col) => col.notNull())
-    .addColumn("total_chunks", "integer", (col) => col.notNull())
-    .addColumn("uploaded_chunks", sql`integer[]`, (col) => col.notNull().defaultTo(sql`'{}'`))
-    .addColumn("expires_at", "timestamp(3)", (col) => col.notNull())
-    .addColumn("parent_id", "integer", (col) => col.references("directory.id"))
-    .addColumn("master_encryption_key_version", "integer")
-    .addColumn("encrypted_data_encryption_key", "text")
-    .addColumn("data_encryption_key_version", "timestamp(3)")
-    .addColumn("hmac_secret_key_version", "integer")
-    .addColumn("content_type", "text")
-    .addColumn("encrypted_name", "json")
-    .addColumn("encrypted_created_at", "json")
-    .addColumn("encrypted_last_modified_at", "json")
-    .addColumn("file_id", "integer", (col) => col.references("file.id"))
-    .addForeignKeyConstraint(
-      "upload_session_fk01",
-      ["user_id", "master_encryption_key_version"],
-      "master_encryption_key",
-      ["user_id", "version"],
-    )
-    .addForeignKeyConstraint(
-      "upload_session_fk02",
-      ["user_id", "hmac_secret_key_version"],
-      "hmac_secret_key",
-      ["user_id", "version"],
-    )
-    .execute();
-};
-
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-export const down = async (db: Kysely<any>) => {
-  await db.schema.dropTable("upload_session").execute();
-  await db.schema
-    .alterTable("thumbnail")
-    .alterColumn("encrypted_content_iv", (col) => col.setNotNull())
-    .execute();
-  await db.schema
-    .alterTable("file")
-    .alterColumn("encrypted_content_iv", (col) => col.setNotNull())
-    .execute();
-};

src/lib/server/db/migrations/index.ts

@@ -1,11 +1,7 @@
 import * as Initial1737357000 from "./1737357000-Initial";
 import * as AddFileCategory1737422340 from "./1737422340-AddFileCategory";
-import * as AddThumbnail1738409340 from "./1738409340-AddThumbnail";
-import * as AddChunkedUpload1768062380 from "./1768062380-AddChunkedUpload";
 
 export default {
   "1737357000-Initial": Initial1737357000,
   "1737422340-AddFileCategory": AddFileCategory1737422340,
-  "1738409340-AddThumbnail": AddThumbnail1738409340,
-  "1768062380-AddChunkedUpload": AddChunkedUpload1768062380,
 };

src/lib/server/db/schema/category.ts

@@ -1,5 +1,5 @@
 import type { Generated } from "kysely";
-import type { Ciphertext } from "./utils";
+import type { Ciphertext } from "./util";
 
 interface CategoryTable {
   id: Generated<number>;

src/lib/server/db/schema/file.ts

@@ -1,5 +1,5 @@
 import type { ColumnType, Generated } from "kysely";
-import type { Ciphertext } from "./utils";
+import type { Ciphertext } from "./util";
 
 interface DirectoryTable {
   id: Generated<number>;
@@ -30,7 +30,7 @@ interface FileTable {
   hmac_secret_key_version: number | null;
   content_hmac: string | null; // Base64
   content_type: string;
-  encrypted_content_iv: string | null; // Base64
+  encrypted_content_iv: string; // Base64
   encrypted_content_hash: string; // Base64
   encrypted_name: Ciphertext;
   encrypted_created_at: Ciphertext | null;

src/lib/server/db/schema/index.ts

@@ -2,12 +2,10 @@ export * from "./category";
 export * from "./client";
 export * from "./file";
 export * from "./hsk";
-export * from "./media";
 export * from "./mek";
 export * from "./session";
-export * from "./upload";
 export * from "./user";
-export * from "./utils";
+export * from "./util";
 
 // eslint-disable-next-line @typescript-eslint/no-empty-object-type
 export interface Database {}

src/lib/server/db/schema/media.ts

@@ -1,17 +0,0 @@
-import type { Generated } from "kysely";
-
-interface ThumbnailTable {
-  id: Generated<number>;
-  directory_id: number | null;
-  file_id: number | null;
-  category_id: number | null;
-  path: string;
-  updated_at: Date;
-  encrypted_content_iv: string | null; // Base64
-}
-
-declare module "./index" {
-  interface Database {
-    thumbnail: ThumbnailTable;
-  }
-}

src/lib/server/db/schema/upload.ts

@@ -1,32 +0,0 @@
-import type { Generated } from "kysely";
-import type { Ciphertext } from "./utils";
-
-interface UploadSessionTable {
-  id: string;
-  type: "file" | "thumbnail";
-  user_id: number;
-  path: string;
-  total_chunks: number;
-  uploaded_chunks: Generated<number[]>;
-  expires_at: Date;
-
-  // For file uploads
-  parent_id: number | null;
-  master_encryption_key_version: number | null;
-  encrypted_data_encryption_key: string | null; // Base64
-  data_encryption_key_version: Date | null;
-  hmac_secret_key_version: number | null;
-  content_type: string | null;
-  encrypted_name: Ciphertext | null;
-  encrypted_created_at: Ciphertext | null;
-  encrypted_last_modified_at: Ciphertext | null;
-
-  // For thumbnail uploads
-  file_id: number | null;
-}
-
-declare module "./index" {
-  interface Database {
-    upload_session: UploadSessionTable;
-  }
-}

src/lib/server/db/session.ts

@@ -5,22 +5,31 @@ import db from "./kysely";
 
 export const createSession = async (
   userId: number,
+  clientId: number | null,
   sessionId: string,
   ip: string | null,
   agent: string | null,
 ) => {
-  const now = new Date();
-  await db
-    .insertInto("session")
-    .values({
-      id: sessionId,
-      user_id: userId,
-      created_at: now,
-      last_used_at: now,
-      last_used_by_ip: ip || null,
-      last_used_by_agent: agent || null,
-    })
-    .execute();
+  try {
+    const now = new Date();
+    await db
+      .insertInto("session")
+      .values({
+        id: sessionId,
+        user_id: userId,
+        client_id: clientId,
+        created_at: now,
+        last_used_at: now,
+        last_used_by_ip: ip || null,
+        last_used_by_agent: agent || null,
+      })
+      .execute();
+  } catch (e) {
+    if (e instanceof pg.DatabaseError && e.code === "23505") {
+      throw new IntegrityError("Session already exists");
+    }
+    throw e;
+  }
 };
 
 export const refreshSession = async (
@@ -46,37 +55,15 @@ export const refreshSession = async (
   return { userId: session.user_id, clientId: session.client_id };
 };
 
-export const upgradeSession = async (
-  userId: number,
-  sessionId: string,
-  clientId: number,
-  force: boolean,
-) => {
-  try {
-    await db.transaction().execute(async (trx) => {
-      if (force) {
-        await trx
-          .deleteFrom("session")
-          .where("id", "!=", sessionId)
-          .where("user_id", "=", userId)
-          .where("client_id", "=", clientId)
-          .execute();
-      }
-      const res = await trx
-        .updateTable("session")
-        .set({ client_id: clientId })
-        .where("id", "=", sessionId)
-        .where("client_id", "is", null)
-        .executeTakeFirst();
-      if (res.numUpdatedRows === 0n) {
-        throw new IntegrityError("Session not found");
-      }
-    });
-  } catch (e) {
-    if (e instanceof pg.DatabaseError && e.code === "23505") {
-      throw new IntegrityError("Session already exists");
-    }
-    throw e;
+export const upgradeSession = async (sessionId: string, clientId: number) => {
+  const res = await db
+    .updateTable("session")
+    .set({ client_id: clientId })
+    .where("id", "=", sessionId)
+    .where("client_id", "is", null)
+    .executeTakeFirst();
+  if (res.numUpdatedRows === 0n) {
+    throw new IntegrityError("Session not found");
   }
 };
 
@@ -107,7 +94,7 @@ export const registerSessionUpgradeChallenge = async (
   expiresAt: Date,
 ) => {
   try {
-    const { id } = await db
+    await db
       .insertInto("session_upgrade_challenge")
       .values({
         session_id: sessionId,
@@ -116,9 +103,7 @@ export const registerSessionUpgradeChallenge = async (
         allowed_ip: allowedIp,
         expires_at: expiresAt,
       })
-      .returning("id")
-      .executeTakeFirstOrThrow();
-    return { id };
+      .execute();
   } catch (e) {
     if (e instanceof pg.DatabaseError && e.code === "23505") {
       throw new IntegrityError("Challenge already registered");
@@ -128,19 +113,19 @@ export const registerSessionUpgradeChallenge = async (
 };
 
 export const consumeSessionUpgradeChallenge = async (
-  challengeId: number,
   sessionId: string,
+  answer: string,
   ip: string,
 ) => {
   const challenge = await db
     .deleteFrom("session_upgrade_challenge")
-    .where("id", "=", challengeId)
     .where("session_id", "=", sessionId)
+    .where("answer", "=", answer)
     .where("allowed_ip", "=", ip)
     .where("expires_at", ">", new Date())
-    .returning(["client_id", "answer"])
+    .returning("client_id")
     .executeTakeFirst();
-  return challenge ? { clientId: challenge.client_id, answer: challenge.answer } : null;
+  return challenge ? { clientId: challenge.client_id } : null;
 };
 
 export const cleanupExpiredSessionUpgradeChallenges = async () => {

src/lib/server/db/upload.ts

@@ -1,185 +0,0 @@
-import { sql } from "kysely";
-import { IntegrityError } from "./error";
-import db from "./kysely";
-import type { Ciphertext } from "./schema";
-
-interface BaseUploadSession {
-  id: string;
-  userId: number;
-  path: string;
-  totalChunks: number;
-  uploadedChunks: number[];
-  expiresAt: Date;
-}
-
-interface FileUploadSession extends BaseUploadSession {
-  type: "file";
-  parentId: DirectoryId;
-  mekVersion: number;
-  encDek: string;
-  dekVersion: Date;
-  hskVersion: number | null;
-  contentType: string;
-  encName: Ciphertext;
-  encCreatedAt: Ciphertext | null;
-  encLastModifiedAt: Ciphertext;
-}
-
-interface ThumbnailUploadSession extends BaseUploadSession {
-  type: "thumbnail";
-  fileId: number;
-  dekVersion: Date;
-}
-
-export const createFileUploadSession = async (
-  params: Omit<FileUploadSession, "type" | "uploadedChunks">,
-) => {
-  await db.transaction().execute(async (trx) => {
-    const mek = await trx
-      .selectFrom("master_encryption_key")
-      .select("version")
-      .where("user_id", "=", params.userId)
-      .where("state", "=", "active")
-      .limit(1)
-      .forUpdate()
-      .executeTakeFirst();
-    if (mek?.version !== params.mekVersion) {
-      throw new IntegrityError("Inactive MEK version");
-    }
-
-    if (params.hskVersion) {
-      const hsk = await trx
-        .selectFrom("hmac_secret_key")
-        .select("version")
-        .where("user_id", "=", params.userId)
-        .where("state", "=", "active")
-        .limit(1)
-        .forUpdate()
-        .executeTakeFirst();
-      if (hsk?.version !== params.hskVersion) {
-        throw new IntegrityError("Inactive HSK version");
-      }
-    }
-
-    await trx
-      .insertInto("upload_session")
-      .values({
-        id: params.id,
-        type: "file",
-        user_id: params.userId,
-        path: params.path,
-        total_chunks: params.totalChunks,
-        expires_at: params.expiresAt,
-        parent_id: params.parentId !== "root" ? params.parentId : null,
-        master_encryption_key_version: params.mekVersion,
-        encrypted_data_encryption_key: params.encDek,
-        data_encryption_key_version: params.dekVersion,
-        hmac_secret_key_version: params.hskVersion,
-        content_type: params.contentType,
-        encrypted_name: params.encName,
-        encrypted_created_at: params.encCreatedAt,
-        encrypted_last_modified_at: params.encLastModifiedAt,
-      })
-      .execute();
-  });
-};
-
-export const createThumbnailUploadSession = async (
-  params: Omit<ThumbnailUploadSession, "type" | "uploadedChunks">,
-) => {
-  await db.transaction().execute(async (trx) => {
-    const file = await trx
-      .selectFrom("file")
-      .select("data_encryption_key_version")
-      .where("id", "=", params.fileId)
-      .where("user_id", "=", params.userId)
-      .limit(1)
-      .forUpdate()
-      .executeTakeFirst();
-    if (!file) {
-      throw new IntegrityError("File not found");
-    } else if (file.data_encryption_key_version.getTime() !== params.dekVersion.getTime()) {
-      throw new IntegrityError("Invalid DEK version");
-    }
-
-    await trx
-      .insertInto("upload_session")
-      .values({
-        id: params.id,
-        type: "thumbnail",
-        user_id: params.userId,
-        path: params.path,
-        total_chunks: params.totalChunks,
-        expires_at: params.expiresAt,
-        file_id: params.fileId,
-        data_encryption_key_version: params.dekVersion,
-      })
-      .execute();
-  });
-};
-
-export const getUploadSession = async (sessionId: string, userId: number) => {
-  const session = await db
-    .selectFrom("upload_session")
-    .selectAll()
-    .where("id", "=", sessionId)
-    .where("user_id", "=", userId)
-    .where("expires_at", ">", new Date())
-    .limit(1)
-    .executeTakeFirst();
-  if (!session) {
-    return null;
-  } else if (session.type === "file") {
-    return {
-      type: "file",
-      id: session.id,
-      userId: session.user_id,
-      path: session.path,
-      totalChunks: session.total_chunks,
-      uploadedChunks: session.uploaded_chunks,
-      expiresAt: session.expires_at,
-      parentId: session.parent_id ?? "root",
-      mekVersion: session.master_encryption_key_version!,
-      encDek: session.encrypted_data_encryption_key!,
-      dekVersion: session.data_encryption_key_version!,
-      hskVersion: session.hmac_secret_key_version,
-      contentType: session.content_type!,
-      encName: session.encrypted_name!,
-      encCreatedAt: session.encrypted_created_at,
-      encLastModifiedAt: session.encrypted_last_modified_at!,
-    } satisfies FileUploadSession;
-  } else {
-    return {
-      type: "thumbnail",
-      id: session.id,
-      userId: session.user_id,
-      path: session.path,
-      totalChunks: session.total_chunks,
-      uploadedChunks: session.uploaded_chunks,
-      expiresAt: session.expires_at,
-      fileId: session.file_id!,
-      dekVersion: session.data_encryption_key_version!,
-    } satisfies ThumbnailUploadSession;
-  }
-};
-
-export const markChunkAsUploaded = async (sessionId: string, chunkIndex: number) => {
-  await db
-    .updateTable("upload_session")
-    .set({ uploaded_chunks: sql`array_append(uploaded_chunks, ${chunkIndex})` })
-    .where("id", "=", sessionId)
-    .execute();
-};
-
-export const deleteUploadSession = async (trx: typeof db, sessionId: string) => {
-  await trx.deleteFrom("upload_session").where("id", "=", sessionId).execute();
-};
-
-export const cleanupExpiredUploadSessions = async () => {
-  const sessions = await db
-    .deleteFrom("upload_session")
-    .where("expires_at", "<=", new Date())
-    .returning("path")
-    .execute();
-  return sessions.map(({ path }) => path);
-};

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/loadenv.ts

@@ -25,6 +25,4 @@ export default {
     sessionUpgradeExp: ms(env.SESSION_UPGRADE_CHALLENGE_EXPIRES || "5m"),
   },
   libraryPath: env.LIBRARY_PATH || "library",
-  thumbnailsPath: env.THUMBNAILS_PATH || "thumbnails",
-  uploadsPath: env.UPLOADS_PATH || "uploads",
 };

src/lib/server/middlewares/authenticate.ts

@@ -1,7 +1,12 @@
 import { error, redirect, type Handle } from "@sveltejs/kit";
-import { cookieOptions, authenticate, AuthenticationError } from "$lib/server/modules/auth";
+import { authenticate, AuthenticationError } from "$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 +15,9 @@ 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);
   } 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, null, 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

@@ -1,13 +0,0 @@
-import { rm, unlink } from "fs/promises";
-
-export const safeRecursiveRm = async (path: string | null | undefined) => {
-  if (path) {
-    await rm(path, { recursive: true }).catch(console.error);
-  }
-};
-
-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 +1,30 @@
+import { z } from "zod";
+
+export const passwordChangeRequest = z.object({
+  oldPassword: z.string().trim().nonempty(),
+  newPassword: z.string().trim().nonempty(),
+});
+export type PasswordChangeRequest = z.infer<typeof passwordChangeRequest>;
+
+export const loginRequest = z.object({
+  email: z.string().email(),
+  password: z.string().trim().nonempty(),
+});
+export type LoginRequest = z.infer<typeof loginRequest>;
+
+export const sessionUpgradeRequest = z.object({
+  encPubKey: z.string().base64().nonempty(),
+  sigPubKey: z.string().base64().nonempty(),
+});
+export type SessionUpgradeRequest = z.infer<typeof sessionUpgradeRequest>;
+
+export const sessionUpgradeResponse = z.object({
+  challenge: z.string().base64().nonempty(),
+});
+export type SessionUpgradeResponse = z.infer<typeof sessionUpgradeResponse>;
+
+export const sessionUpgradeVerifyRequest = z.object({
+  answer: z.string().base64().nonempty(),
+  answerSig: z.string().base64().nonempty(),
+});
+export type SessionUpgradeVerifyRequest = z.infer<typeof sessionUpgradeVerifyRequest>;

src/lib/server/schemas/category.ts

@@ -0,0 +1,55 @@
+import { z } from "zod";
+
+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.infer<typeof categoryInfoResponse>;
+
+export const categoryFileAddRequest = z.object({
+  file: z.number().int().positive(),
+});
+export type CategoryFileAddRequest = z.infer<typeof categoryFileAddRequest>;
+
+export const categoryFileListResponse = z.object({
+  files: z.array(
+    z.object({
+      file: z.number().int().positive(),
+      isRecursive: z.boolean(),
+    }),
+  ),
+});
+export type CategoryFileListResponse = z.infer<typeof categoryFileListResponse>;
+
+export const categoryFileRemoveRequest = z.object({
+  file: z.number().int().positive(),
+});
+export type CategoryFileRemoveRequest = z.infer<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.infer<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.infer<typeof categoryCreateRequest>;

src/lib/server/schemas/client.ts

@@ -0,0 +1,35 @@
+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.infer<typeof clientListResponse>;
+
+export const clientRegisterRequest = z.object({
+  encPubKey: z.string().base64().nonempty(),
+  sigPubKey: z.string().base64().nonempty(),
+});
+export type ClientRegisterRequest = z.infer<typeof clientRegisterRequest>;
+
+export const clientRegisterResponse = z.object({
+  challenge: z.string().base64().nonempty(),
+});
+export type ClientRegisterResponse = z.infer<typeof clientRegisterResponse>;
+
+export const clientRegisterVerifyRequest = z.object({
+  answer: z.string().base64().nonempty(),
+  answerSig: z.string().base64().nonempty(),
+});
+export type ClientRegisterVerifyRequest = z.infer<typeof clientRegisterVerifyRequest>;
+
+export const clientStatusResponse = z.object({
+  id: z.number().int().positive(),
+  state: z.enum(["pending", "active"]),
+  isInitialMekNeeded: z.boolean(),
+});
+export type ClientStatusResponse = z.infer<typeof clientStatusResponse>;

src/lib/server/schemas/directory.ts

@@ -0,0 +1,41 @@
+import { z } from "zod";
+
+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.infer<typeof directoryInfoResponse>;
+
+export const directoryDeleteResponse = z.object({
+  deletedFiles: z.number().int().positive().array(),
+});
+export type DirectoryDeleteResponse = z.infer<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.infer<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.infer<typeof directoryCreateRequest>;

src/lib/server/schemas/file.ts

@@ -0,0 +1,69 @@
+import mime from "mime";
+import { z } from "zod";
+import { directoryIdSchema } from "./directory";
+
+export const fileInfoResponse = z.object({
+  parent: directoryIdSchema,
+  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.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.infer<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.infer<typeof fileRenameRequest>;
+
+export const duplicateFileScanRequest = z.object({
+  hskVersion: z.number().int().positive(),
+  contentHmac: z.string().base64().nonempty(),
+});
+export type DuplicateFileScanRequest = z.infer<typeof duplicateFileScanRequest>;
+
+export const duplicateFileScanResponse = z.object({
+  files: z.number().int().positive().array(),
+});
+export type DuplicateFileScanResponse = z.infer<typeof duplicateFileScanResponse>;
+
+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.infer<typeof fileUploadRequest>;
+
+export const fileUploadResponse = z.object({
+  file: z.number().int().positive(),
+});
+export type FileUploadResponse = z.infer<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.infer<typeof hmacSecretListResponse>;
+
+export const initialHmacSecretRegisterRequest = z.object({
+  mekVersion: z.number().int().positive(),
+  hsk: z.string().base64().nonempty(),
+});
+export type InitialHmacSecretRegisterRequest = z.infer<typeof initialHmacSecretRegisterRequest>;

src/lib/server/schemas/index.ts

@@ -0,0 +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.infer<typeof masterKeyListResponse>;
+
+export const initialMasterKeyRegisterRequest = z.object({
+  mek: z.string().base64().nonempty(),
+  mekSig: z.string().base64().nonempty(),
+});
+export type InitialMasterKeyRegisterRequest = z.infer<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.infer<typeof userInfoResponse>;
+
+export const nicknameChangeRequest = z.object({
+  newNickname: z.string().trim().min(2).max(8),
+});
+export type NicknameChangeRequest = z.infer<typeof nicknameChangeRequest>;

src/lib/server/services/auth.ts

@@ -0,0 +1,121 @@
+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");
+  }
+
+  try {
+    return { sessionIdSigned: await startSession(user.id, ip, userAgent) };
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "Session already exists") {
+      error(403, "Already logged in");
+    }
+    throw e;
+  }
+};
+
+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);
+  await registerSessionUpgradeChallenge(
+    sessionId,
+    client.id,
+    answer.toString("base64"),
+    ip,
+    new Date(Date.now() + env.challenge.sessionUpgradeExp),
+  );
+
+  return { challenge: challenge.toString("base64") };
+};
+
+export const verifySessionUpgradeChallenge = async (
+  sessionId: string,
+  ip: string,
+  answer: string,
+  answerSig: string,
+) => {
+  const challenge = await consumeSessionUpgradeChallenge(sessionId, answer, 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(answer, "base64"), answerSig, client.sigPubKey)) {
+    error(403, "Invalid challenge answer signature");
+  }
+
+  try {
+    await upgradeSession(sessionId, client.id);
+  } catch (e) {
+    if (e instanceof IntegrityError && e.message === "Session not found") {
+      error(500, "Invalid challenge answer");
+    }
+    throw e;
+  }
+};