tRPC Endpoint를 /api/trpc로 변경

Dockerfile

@@ -2,11 +2,7 @@
 FROM node:22-alpine AS base
 WORKDIR /app
 
-RUN apk add --no-cache bash curl && \
+RUN npm install -g pnpm@10
-    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
@@ -29,4 +25,4 @@ COPY --from=build /app/build ./build
 
 EXPOSE 3000
 ENV BODY_SIZE_LIMIT=Infinity
-CMD ["bash", "-c", "wait-for-it ${DATABASE_HOST:-localhost}:${DATABASE_PORT:-5432} -- node ./build/index.js"]
+CMD ["node", "./build/index.js"]

docker-compose.yaml

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

eslint.config.js

@@ -1,13 +1,11 @@
-import { includeIgnoreFile } from "@eslint/compat";
-import js from "@eslint/js";
-import svelteQuery from "@tanstack/eslint-plugin-query";
 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";
-
 const gitignorePath = fileURLToPath(new URL("./.gitignore", import.meta.url));
 
 export default ts.config(
@@ -28,11 +26,11 @@ export default ts.config(
   },
   {
     files: ["**/*.svelte"],
+
     languageOptions: {
       parserOptions: {
         parser: ts.parser,
       },
     },
   },
-  ...svelteQuery.configs["flat/recommended"],
 );

package.json

@@ -16,55 +16,55 @@
     "db:migrate": "kysely migrate"
   },
   "devDependencies": {
-    "@eslint/compat": "^1.3.1",
+    "@eslint/compat": "^1.4.1",
-    "@iconify-json/material-symbols": "^1.2.29",
+    "@iconify-json/material-symbols": "^1.2.44",
-    "@sveltejs/adapter-node": "^5.2.13",
+    "@sveltejs/adapter-node": "^5.4.0",
-    "@sveltejs/kit": "^2.22.5",
+    "@sveltejs/kit": "^2.48.4",
-    "@sveltejs/vite-plugin-svelte": "^4.0.4",
+    "@sveltejs/vite-plugin-svelte": "^6.2.1",
-    "@tanstack/eslint-plugin-query": "^5.81.2",
+    "@trpc/client": "^11.7.1",
-    "@tanstack/svelte-query": "^5.83.0",
     "@types/file-saver": "^2.0.7",
     "@types/ms": "^0.7.34",
     "@types/node-schedule": "^2.1.8",
-    "@types/pg": "^8.15.4",
+    "@types/pg": "^8.15.6",
     "autoprefixer": "^10.4.21",
-    "axios": "^1.10.0",
+    "axios": "^1.13.1",
-    "dexie": "^4.0.11",
+    "dexie": "^4.2.1",
-    "eslint": "^9.30.1",
+    "eslint": "^9.39.0",
-    "eslint-config-prettier": "^10.1.5",
+    "eslint-config-prettier": "^10.1.8",
-    "eslint-plugin-svelte": "^3.10.1",
+    "eslint-plugin-svelte": "^3.13.0",
-    "eslint-plugin-tailwindcss": "^3.18.0",
+    "eslint-plugin-tailwindcss": "^3.18.2",
-    "exifreader": "^4.31.1",
+    "exifreader": "^4.32.0",
     "file-saver": "^2.0.5",
-    "globals": "^16.3.0",
+    "globals": "^16.5.0",
     "heic2any": "^0.0.4",
-    "kysely-ctl": "^0.13.1",
+    "kysely-ctl": "^0.19.0",
-    "lru-cache": "^11.1.0",
+    "lru-cache": "^11.2.2",
-    "mime": "^4.0.7",
+    "mime": "^4.1.0",
-    "p-limit": "^6.2.0",
+    "p-limit": "^7.2.0",
     "prettier": "^3.6.2",
     "prettier-plugin-svelte": "^3.4.0",
-    "prettier-plugin-tailwindcss": "^0.6.14",
+    "prettier-plugin-tailwindcss": "^0.7.1",
-    "svelte": "^5.35.6",
+    "svelte": "^5.43.2",
-    "svelte-check": "^4.2.2",
+    "svelte-check": "^4.3.3",
-    "tailwindcss": "^3.4.17",
+    "tailwindcss": "^3.4.18",
-    "typescript": "^5.8.3",
+    "typescript": "^5.9.3",
-    "typescript-eslint": "^8.36.0",
+    "typescript-eslint": "^8.46.2",
-    "unplugin-icons": "^22.1.0",
+    "unplugin-icons": "^22.5.0",
-    "vite": "^5.4.19"
+    "vite": "^7.1.12"
   },
   "dependencies": {
-    "@fastify/busboy": "^3.1.1",
+    "@fastify/busboy": "^3.2.0",
-    "argon2": "^0.43.0",
+    "@trpc/server": "^11.7.1",
-    "kysely": "^0.28.2",
+    "argon2": "^0.44.0",
+    "kysely": "^0.28.8",
     "ms": "^2.1.3",
     "node-schedule": "^2.1.1",
     "pg": "^8.16.3",
-    "uuid": "^11.1.0",
+    "uuid": "^13.0.0",
     "zod": "^3.25.76"
   },
   "engines": {
     "node": "^22.0.0",
-    "pnpm": "^9.0.0"
+    "pnpm": "^10.0.0"
   }
 }

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

@@ -1,16 +1,14 @@
 <script lang="ts">
-  import type { Component } from "svelte";
+  import { untrack, type Component } from "svelte";
   import type { SvelteHTMLElements } from "svelte/elements";
-  import { derived } from "svelte/store";
+  import { get, type Writable } from "svelte/store";
-  import type { CategoryId } from "$lib/indexedDB";
+  import type { CategoryInfo } from "$lib/modules/filesystem";
-  import { getCategoryInfo, type SubCategoryInfo } from "$lib/modules/filesystem2";
   import { SortBy, sortEntries } from "$lib/modules/util";
-  import { masterKeyStore } from "$lib/stores";
   import Category from "./Category.svelte";
   import type { SelectedCategory } from "./service";
 
   interface Props {
-    categoryIds: CategoryId[];
+    categories: Writable<CategoryInfo | null>[];
     categoryMenuIcon?: Component<SvelteHTMLElements["svg"]>;
     onCategoryClick: (category: SelectedCategory) => void;
     onCategoryMenuClick?: (category: SelectedCategory) => void;
@@ -18,33 +16,42 @@
   }
 
   let {
-    categoryIds,
+    categories,
     categoryMenuIcon,
     onCategoryClick,
     onCategoryMenuClick,
     sortBy = SortBy.NAME_ASC,
   }: Props = $props();
 
-  let categories = $derived(
+  let categoriesWithName: { name?: string; info: Writable<CategoryInfo | null> }[] = $state([]);
-    derived(
+
-      categoryIds.map((id) => getCategoryInfo(id, $masterKeyStore?.get(1)?.key!)),
+  $effect(() => {
-      (infos) => {
+    categoriesWithName = categories.map((category) => ({
-        const categories = infos
+      name: get(category)?.name,
-          .filter(($info) => $info.status === "success")
+      info: category,
-          .map(($info) => ({
-            name: $info.data.name,
-            info: $info.data as SubCategoryInfo,
     }));
-        sortEntries(categories, sortBy);
+
-        return categories;
+    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 $categories.length > 0}
+{#if categoriesWithName.length > 0}
   <div class="space-y-1">
-    {#each $categories as { info }}
+    {#each categoriesWithName as { info }}
       <Category
         {info}
         menuIcon={categoryMenuIcon}

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

@@ -1,13 +1,14 @@
 <script lang="ts">
   import type { Component } from "svelte";
   import type { SvelteHTMLElements } from "svelte/elements";
+  import type { Writable } from "svelte/store";
   import { ActionEntryButton } from "$lib/components/atoms";
   import { CategoryLabel } from "$lib/components/molecules";
-  import type { SubCategoryInfo } from "$lib/modules/filesystem2";
+  import type { CategoryInfo } from "$lib/modules/filesystem";
   import type { SelectedCategory } from "./service";
 
   interface Props {
-    info: SubCategoryInfo;
+    info: Writable<CategoryInfo | null>;
     menuIcon?: Component<SvelteHTMLElements["svg"]>;
     onclick: (category: SelectedCategory) => void;
     onMenuClick?: (category: SelectedCategory) => void;
@@ -16,25 +17,27 @@
   let { info, menuIcon, onclick, onMenuClick }: Props = $props();
 
   const openCategory = () => {
-    const { id, dataKey, dataKeyVersion, name } = info;
+    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;
+    const { id, dataKey, dataKeyVersion, name } = $info as CategoryInfo;
     if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
 
     onMenuClick!({ id, dataKey, dataKeyVersion, name });
   };
 </script>
 
+{#if $info}
   <ActionEntryButton
     class="h-12"
     onclick={openCategory}
     actionButtonIcon={menuIcon}
     onActionButtonClick={openMenu}
   >
-  <CategoryLabel name={info.name} />
+    <CategoryLabel name={$info.name!} />
   </ActionEntryButton>
+{/if}

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/filesystem2";
+  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]}>
@@ -45,7 +55,7 @@
   {/if}
   {#key info}
     <Categories
-      categoryIds={info.subCategoryIds}
+      categories={subCategories}
       categoryMenuIcon={subCategoryMenuIcon}
       onCategoryClick={onSubCategoryClick}
       onCategoryMenuClick={onSubCategoryMenuClick}

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

@@ -1,8 +1,9 @@
 <script lang="ts">
-  import { derived } from "svelte/store";
+  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 CategoryInfo } from "$lib/modules/filesystem2";
+  import { getFileInfo, type FileInfo, type CategoryInfo } from "$lib/modules/filesystem";
   import { SortBy, sortEntries } from "$lib/modules/util";
   import { masterKeyStore } from "$lib/stores";
   import File from "./File.svelte";
@@ -18,7 +19,7 @@
     onSubCategoryCreateClick: () => void;
     onSubCategoryMenuClick: (subCategory: SelectedCategory) => void;
     sortBy?: SortBy;
-    isFileRecursive?: boolean;
+    isFileRecursive: boolean;
   }
 
   let {
@@ -32,35 +33,39 @@
     isFileRecursive = $bindable(),
   }: Props = $props();
 
-  let fileInfos = $derived(
+  let files: { name?: string; info: Writable<FileInfo | null>; isRecursive: boolean }[] = $state(
+    [],
+  );
+
+  $effect(() => {
+    files =
       info.files
         ?.filter(({ isRecursive }) => isFileRecursive || !isRecursive)
-      .map(({ id, isRecursive }) => ({
+        .map(({ id, isRecursive }) => {
-        info: getFileInfo(id, $masterKeyStore?.get(1)?.key!),
+          const info = getFileInfo(id, $masterKeyStore?.get(1)?.key!);
-        isRecursive,
-      })) ?? [],
-  );
-  let files = $derived(
-    derived(
-      fileInfos.map(({ info }) => info),
-      (infos) => {
-        const files = infos
-          .map(($info, i) => {
-            if ($info.status === "success") {
           return {
-                name: $info.data.name,
+            name: get(info)?.name,
-                isRecursive: fileInfos[i]!.isRecursive,
+            info,
-                info: $info.data,
+            isRecursive,
           };
-            }
+        }) ?? [];
-            return undefined;
+
-          })
+    const sort = () => {
-          .filter((info) => info !== undefined);
       sortEntries(files, sortBy);
-        return files;
+    };
-      },
+    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">
@@ -80,15 +85,13 @@
     <div class="space-y-4 bg-white p-4">
       <div class="flex items-center justify-between">
         <p class="text-lg font-bold text-gray-800">파일</p>
-        {#if isFileRecursive !== undefined}
         <CheckBox bind:checked={isFileRecursive}>
           <p class="font-medium">하위 카테고리의 파일</p>
         </CheckBox>
-        {/if}
       </div>
       <div class="space-y-1">
         {#key info}
-          {#each $files as { info, isRecursive }}
+          {#each files as { info, isRecursive }}
             <File
               {info}
               onclick={onFileClick}

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

@@ -1,13 +1,14 @@
 <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 "$lib/modules/filesystem2";
+  import type { FileInfo } from "$lib/modules/filesystem";
   import { requestFileThumbnailDownload, type SelectedFile } from "./service";
 
   import IconClose from "~icons/material-symbols/close";
 
   interface Props {
-    info: FileInfo;
+    info: Writable<FileInfo | null>;
     onclick: (selectedFile: SelectedFile) => void;
     onRemoveClick?: (selectedFile: SelectedFile) => void;
   }
@@ -17,22 +18,22 @@
   let thumbnail: string | undefined = $state();
 
   const openFile = () => {
-    const { id, dataKey, dataKeyVersion, name } = info;
+    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;
+    const { id, dataKey, dataKeyVersion, name } = $info as FileInfo;
     if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
 
     onRemoveClick!({ id, dataKey, dataKeyVersion, name });
   };
 
   $effect(() => {
-    if (info.dataKey) {
+    if ($info) {
-      requestFileThumbnailDownload(info.id, info.dataKey)
+      requestFileThumbnailDownload($info.id, $info.dataKey)
         .then((thumbnailUrl) => {
           thumbnail = thumbnailUrl ?? undefined;
         })
@@ -46,11 +47,13 @@
   });
 </script>
 
+{#if $info}
   <ActionEntryButton
     class="h-12"
     onclick={openFile}
     actionButtonIcon={onRemoveClick && IconClose}
     onActionButtonClick={removeFile}
   >
-  <DirectoryEntryLabel type="file" {thumbnail} name={info.name} />
+    <DirectoryEntryLabel type="file" {thumbnail} name={$info.name} />
   </ActionEntryButton>
+{/if}

src/lib/hooks/callApi.ts

@@ -1,24 +1,11 @@
-interface FetchOptions {
+export const callGetApi = async (input: RequestInfo, fetchInternal = fetch) => {
-  fetch?: typeof fetch;
+  return await fetchInternal(input);
-  signal?: AbortSignal;
-}
-
-export const callGetApi = async (
-  input: RequestInfo,
-  { fetch = globalThis.fetch, signal }: FetchOptions = {},
-) => {
-  return await fetch(input, { method: "GET", signal });
 };
 
-export const callPostApi = async <T>(
+export const callPostApi = async <T>(input: RequestInfo, payload?: T, fetchInternal = fetch) => {
-  input: RequestInfo,
+  return await fetchInternal(input, {
-  payload?: T,
-  { fetch = globalThis.fetch, signal }: FetchOptions = {},
-) => {
-  return await fetch(input, {
     method: "POST",
     headers: { "Content-Type": "application/json" },
     body: payload ? JSON.stringify(payload) : undefined,
-    signal,
   });
 };

src/lib/indexedDB/filesystem.ts

@@ -62,10 +62,6 @@ export const storeDirectoryInfo = async (directoryInfo: DirectoryInfo) => {
   await filesystem.directory.put(directoryInfo);
 };
 
-export const updateDirectoryInfo = async (id: number, changes: { name?: string }) => {
-  await filesystem.directory.update(id, changes);
-};
-
 export const deleteDirectoryInfo = async (id: number) => {
   await filesystem.directory.delete(id);
 };
@@ -86,10 +82,6 @@ export const storeFileInfo = async (fileInfo: FileInfo) => {
   await filesystem.file.put(fileInfo);
 };
 
-export const updateFileInfo = async (id: number, changes: { name?: string }) => {
-  await filesystem.file.update(id, changes);
-};
-
 export const deleteFileInfo = async (id: number) => {
   await filesystem.file.delete(id);
 };
@@ -106,10 +98,7 @@ export const storeCategoryInfo = async (categoryInfo: CategoryInfo) => {
   await filesystem.category.put(categoryInfo);
 };
 
-export const updateCategoryInfo = async (
+export const updateCategoryInfo = async (id: number, changes: { isFileRecursive?: boolean }) => {
-  id: number,
-  changes: { name?: string; isFileRecursive?: boolean },
-) => {
   await filesystem.category.update(id, changes);
 };
 

src/lib/modules/file/upload.ts

@@ -5,7 +5,6 @@ import { writable, type Writable } from "svelte/store";
 import {
   encodeToBase64,
   generateDataKey,
-  makeAESKeyNonextractable,
   wrapDataKey,
   encryptData,
   encryptString,
@@ -119,14 +118,12 @@ const encryptFile = limitFunction(
     });
 
     return {
-      dataKey: await makeAESKeyNonextractable(dataKey),
       dataKeyWrapped,
       dataKeyVersion,
       fileType,
       fileEncrypted,
       fileEncryptedHash,
       nameEncrypted,
-      createdAt,
       createdAtEncrypted,
       lastModifiedAtEncrypted,
       thumbnail: thumbnailEncrypted && { plaintext: thumbnailBuffer, ...thumbnailEncrypted },
@@ -179,7 +176,9 @@ export const uploadFile = async (
   hmacSecret: HmacSecret,
   masterKey: MasterKey,
   onDuplicate: () => Promise<boolean>,
-) => {
+): Promise<
+  { fileId: number; fileBuffer: ArrayBuffer; thumbnailBuffer?: ArrayBuffer } | undefined
+> => {
   const status = writable<FileUploadStatus>({
     name: file.name,
     parentId,
@@ -209,14 +208,12 @@ export const uploadFile = async (
     }
 
     const {
-      dataKey,
       dataKeyWrapped,
       dataKeyVersion,
       fileType,
       fileEncrypted,
       fileEncryptedHash,
       nameEncrypted,
-      createdAt,
       createdAtEncrypted,
       lastModifiedAtEncrypted,
       thumbnail,
@@ -259,16 +256,7 @@ export const uploadFile = async (
     }
 
     const { fileId } = await requestFileUpload(status, form, thumbnailForm);
-    return {
+    return { fileId, fileBuffer, thumbnailBuffer: thumbnail?.plaintext };
-      fileId,
-      fileDataKey: dataKey,
-      fileDataKeyVersion: dataKeyVersion,
-      fileType,
-      fileEncryptedIv: fileEncrypted.iv,
-      fileCreatedAt: createdAt,
-      fileBuffer,
-      thumbnailBuffer: thumbnail?.plaintext,
-    };
   } catch (e) {
     status.update((value) => {
       value.status = "error";

src/lib/modules/filesystem.ts

@@ -0,0 +1,360 @@
+import { get, writable, type Writable } from "svelte/store";
+import { callGetApi } from "$lib/hooks";
+import {
+  getDirectoryInfos as getDirectoryInfosFromIndexedDB,
+  getDirectoryInfo as getDirectoryInfoFromIndexedDB,
+  storeDirectoryInfo,
+  deleteDirectoryInfo,
+  getFileInfos as getFileInfosFromIndexedDB,
+  getFileInfo as getFileInfoFromIndexedDB,
+  storeFileInfo,
+  deleteFileInfo,
+  getCategoryInfos as getCategoryInfosFromIndexedDB,
+  getCategoryInfo as getCategoryInfoFromIndexedDB,
+  storeCategoryInfo,
+  updateCategoryInfo as updateCategoryInfoInIndexedDB,
+  deleteCategoryInfo,
+  type DirectoryId,
+  type CategoryId,
+} from "$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;
+      isFileRecursive?: undefined;
+    }
+  | {
+      id: number;
+      dataKey?: CryptoKey;
+      dataKeyVersion?: Date;
+      name: string;
+      subCategoryIds: number[];
+      files: { id: number; isRecursive: boolean }[];
+      isFileRecursive: 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,
+      isFileRecursive: category.isFileRecursive,
+    });
+  }
+};
+
+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 }));
+    let isFileRecursive: boolean | undefined = undefined;
+
+    info.update((value) => {
+      const newValue = {
+        isFileRecursive: false,
+        ...value,
+        id,
+        dataKey,
+        dataKeyVersion: new Date(metadata!.dekVersion),
+        name,
+        subCategoryIds: subCategories,
+        files: filesMapped,
+      };
+      isFileRecursive = newValue.isFileRecursive;
+      return newValue;
+    });
+    await storeCategoryInfo({
+      id,
+      parentId: metadata!.parent,
+      name,
+      files: filesMapped,
+      isFileRecursive: isFileRecursive!,
+    });
+  }
+};
+
+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;
+};
+
+export const updateCategoryInfo = async (
+  categoryId: number,
+  changes: { isFileRecursive?: boolean },
+) => {
+  await updateCategoryInfoInIndexedDB(categoryId, changes);
+  categoryInfoStore.get(categoryId)?.update((value) => {
+    if (!value) return value;
+    if (changes.isFileRecursive !== undefined) {
+      value.isFileRecursive = changes.isFileRecursive;
+    }
+    return value;
+  });
+};

src/lib/modules/filesystem2/category.ts

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

src/lib/modules/filesystem2/directory.ts

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

src/lib/modules/filesystem2/file.ts

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

src/lib/modules/filesystem2/index.ts

@@ -1,3 +0,0 @@
-export * from "./category";
-export * from "./directory";
-export * from "./file";

src/lib/server/db/category.ts

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

src/lib/server/db/client.ts

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

src/lib/server/db/file.ts

@@ -39,7 +39,7 @@ interface File {
 export type NewFile = Omit<File, "id">;
 
 export const registerDirectory = async (params: NewDirectory) => {
-  return await db.transaction().execute(async (trx) => {
+  await db.transaction().execute(async (trx) => {
     const mek = await trx
       .selectFrom("master_encryption_key")
       .select("version")
@@ -73,7 +73,6 @@ export const registerDirectory = async (params: NewDirectory) => {
         new_name: params.encName,
       })
       .execute();
-    return { id: directoryId };
   });
 };
 
@@ -181,10 +180,7 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
       };
       const unregisterDirectoryRecursively = async (
         directoryId: number,
-      ): Promise<{
+      ): Promise<{ id: number; path: string; thumbnailPath: string | null }[]> => {
-        subDirectories: { id: number }[];
-        files: { id: number; path: string; thumbnailPath: string | null }[];
-      }> => {
         const files = await unregisterFiles(directoryId);
         const subDirectories = await trx
           .selectFrom("directory")
@@ -192,7 +188,7 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
           .where("parent_id", "=", directoryId)
           .where("user_id", "=", userId)
           .execute();
-        const subDirectoryEntries = await Promise.all(
+        const subDirectoryFilePaths = await Promise.all(
           subDirectories.map(async ({ id }) => await unregisterDirectoryRecursively(id)),
         );
 
@@ -204,12 +200,7 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
         if (deleteRes.numDeletedRows === 0n) {
           throw new IntegrityError("Directory not found");
         }
-        return {
+        return files.concat(...subDirectoryFilePaths);
-          subDirectories: subDirectoryEntries
-            .flatMap(({ subDirectories }) => subDirectories)
-            .concat(subDirectories),
-          files: subDirectoryEntries.flatMap(({ files }) => files).concat(files),
-        };
       };
       return await unregisterDirectoryRecursively(directoryId);
     });

src/lib/server/db/index.ts

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

src/lib/server/db/mek.ts

@@ -60,19 +60,6 @@ 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/middlewares/authenticate.ts

@@ -4,7 +4,7 @@ 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") {
+  if (pathname === "/api/auth/login" || pathname.startsWith("/api/trpc")) {
     return await resolve(event);
   }
 

src/lib/server/modules/auth.ts

@@ -11,10 +11,17 @@ interface Session {
   clientId?: number;
 }
 
-interface ClientSession extends Session {
+export interface ClientSession extends Session {
   clientId: number;
 }
 
+export type SessionPermission =
+  | "any"
+  | "notClient"
+  | "anyClient"
+  | "pendingClient"
+  | "activeClient";
+
 export class AuthenticationError extends Error {
   constructor(
     public status: 400 | 401,
@@ -25,6 +32,16 @@ export class AuthenticationError extends Error {
   }
 }
 
+export class AuthorizationError extends Error {
+  constructor(
+    public status: 403 | 500,
+    message: string,
+  ) {
+    super(message);
+    this.name = "AuthorizationError";
+  }
+}
+
 export const startSession = async (userId: number, ip: string, userAgent: string) => {
   const { sessionId, sessionIdSigned } = await issueSessionId(32, env.session.secret);
   await createSession(userId, sessionId, ip, userAgent);
@@ -52,34 +69,12 @@ export const authenticate = async (sessionIdSigned: string, ip: string, userAgen
   }
 };
 
-export async function authorize(locals: App.Locals, requiredPermission: "any"): Promise<Session>;
+export const authorizeInternal = async (
-
-export async function authorize(
   locals: App.Locals,
-  requiredPermission: "notClient",
+  requiredPermission: SessionPermission,
-): Promise<Session>;
+): 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) {
-    error(500, "Unauthenticated");
+    throw new AuthorizationError(500, "Unauthenticated");
   }
 
   const { id: sessionId, userId, clientId } = locals.session;
@@ -89,39 +84,63 @@ export async function authorize(
       break;
     case "notClient":
       if (clientId) {
-        error(403, "Forbidden");
+        throw new AuthorizationError(403, "Forbidden");
       }
       break;
     case "anyClient":
       if (!clientId) {
-        error(403, "Forbidden");
+        throw new AuthorizationError(403, "Forbidden");
       }
       break;
     case "pendingClient": {
       if (!clientId) {
-        error(403, "Forbidden");
+        throw new AuthorizationError(403, "Forbidden");
       }
       const userClient = await getUserClient(userId, clientId);
       if (!userClient) {
-        error(500, "Invalid session id");
+        throw new AuthorizationError(500, "Invalid session id");
       } else if (userClient.state !== "pending") {
-        error(403, "Forbidden");
+        throw new AuthorizationError(403, "Forbidden");
       }
       break;
     }
     case "activeClient": {
       if (!clientId) {
-        error(403, "Forbidden");
+        throw new AuthorizationError(403, "Forbidden");
       }
       const userClient = await getUserClient(userId, clientId);
       if (!userClient) {
-        error(500, "Invalid session id");
+        throw new AuthorizationError(500, "Invalid session id");
       } else if (userClient.state !== "active") {
-        error(403, "Forbidden");
+        throw new AuthorizationError(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/mek.ts

@@ -1,25 +0,0 @@
-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/category.ts

@@ -53,8 +53,3 @@ export const categoryCreateRequest = z.object({
   nameIv: z.string().base64().nonempty(),
 });
 export type CategoryCreateRequest = z.input<typeof categoryCreateRequest>;
-
-export const categoryCreateResponse = z.object({
-  category: z.number().int().positive(),
-});
-export type CategoryCreateResponse = z.output<typeof categoryCreateResponse>;

src/lib/server/schemas/client.ts

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

src/lib/server/schemas/directory.ts

@@ -19,7 +19,6 @@ export const directoryInfoResponse = z.object({
 export type DirectoryInfoResponse = z.output<typeof directoryInfoResponse>;
 
 export const directoryDeleteResponse = z.object({
-  deletedDirectories: z.number().int().positive().array(),
   deletedFiles: z.number().int().positive().array(),
 });
 export type DirectoryDeleteResponse = z.output<typeof directoryDeleteResponse>;
@@ -40,8 +39,3 @@ export const directoryCreateRequest = z.object({
   nameIv: z.string().base64().nonempty(),
 });
 export type DirectoryCreateRequest = z.input<typeof directoryCreateRequest>;
-
-export const directoryCreateResponse = z.object({
-  directory: z.number().int().positive(),
-});
-export type DirectoryCreateResponse = z.output<typeof directoryCreateResponse>;

src/lib/server/schemas/hsk.ts

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

src/lib/server/schemas/index.ts

@@ -1,8 +1,4 @@
 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

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

src/lib/server/schemas/user.ts

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

src/lib/server/services/category.ts

@@ -123,8 +123,7 @@ export const createCategory = async (params: NewCategory) => {
   }
 
   try {
-    const { id } = await registerCategory(params);
+    await registerCategory(params);
-    return { id };
   } catch (e) {
     if (e instanceof IntegrityError && e.message === "Inactive MEK version") {
       error(400, "Inactive MEK version");

src/lib/server/services/client.ts

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

src/lib/server/services/directory.ts

@@ -42,9 +42,8 @@ const safeUnlink = async (path: string | null) => {
 
 export const deleteDirectory = async (userId: number, directoryId: number) => {
   try {
-    const { subDirectories, files } = await unregisterDirectory(userId, directoryId);
+    const files = await unregisterDirectory(userId, directoryId);
     return {
-      directories: [...subDirectories.map(({ id }) => id), directoryId],
       files: files.map(({ id, path, thumbnailPath }) => {
         safeUnlink(path); // Intended
         safeUnlink(thumbnailPath); // Intended
@@ -87,8 +86,7 @@ export const createDirectory = async (params: NewDirectory) => {
   }
 
   try {
-    const { id } = await registerDirectory(params);
+    await registerDirectory(params);
-    return { id };
   } catch (e) {
     if (e instanceof IntegrityError && e.message === "Inactive MEK version") {
       error(400, "Invalid MEK version");

src/lib/server/services/hsk.ts

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

src/lib/server/services/mek.ts

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

src/lib/server/services/user.ts

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

src/lib/services/file.ts

@@ -48,9 +48,9 @@ export const requestFileThumbnailUpload = async (
   return await fetch(`/api/file/${fileId}/thumbnail/upload`, { method: "POST", body: form });
 };
 
-export const requestFileThumbnailDownload = async (fileId: number, dataKey: CryptoKey) => {
+export const requestFileThumbnailDownload = async (fileId: number, dataKey?: CryptoKey) => {
   const cache = await getFileThumbnailCache(fileId);
-  if (cache) return cache;
+  if (cache || !dataKey) return cache;
 
   let res = await callGetApi(`/api/file/${fileId}/thumbnail`);
   if (!res.ok) return null;

src/lib/services/key.ts

@@ -1,4 +1,4 @@
-import { callGetApi, callPostApi } from "$lib/hooks";
+import { TRPCClientError } from "@trpc/client";
 import { storeMasterKeys } from "$lib/indexedDB";
 import {
   encodeToBase64,
@@ -9,16 +9,9 @@ import {
   signMasterKeyWrapped,
   verifyMasterKeyWrapped,
 } from "$lib/modules/crypto";
-import type {
-  ClientRegisterRequest,
-  ClientRegisterResponse,
-  ClientRegisterVerifyRequest,
-  InitialHmacSecretRegisterRequest,
-  MasterKeyListResponse,
-  InitialMasterKeyRegisterRequest,
-} from "$lib/server/schemas";
 import { requestSessionUpgrade } from "$lib/services/auth";
 import { masterKeyStore, type ClientKeys } from "$lib/stores";
+import { useTRPC } from "$trpc/client";
 
 export const requestClientRegistration = async (
   encryptKeyBase64: string,
@@ -26,21 +19,24 @@ export const requestClientRegistration = async (
   verifyKeyBase64: string,
   signKey: CryptoKey,
 ) => {
-  let res = await callPostApi<ClientRegisterRequest>("/api/client/register", {
+  const trpc = useTRPC();
+
+  try {
+    const { id, challenge } = await trpc.client.register.mutate({
       encPubKey: encryptKeyBase64,
       sigPubKey: verifyKeyBase64,
     });
-  if (!res.ok) return false;
-
-  const { id, challenge }: ClientRegisterResponse = await res.json();
     const answer = await decryptChallenge(challenge, decryptKey);
     const answerSig = await signMessageRSA(answer, signKey);
-
+    await trpc.client.verify.mutate({
-  res = await callPostApi<ClientRegisterVerifyRequest>("/api/client/register/verify", {
       id,
       answerSig: encodeToBase64(answerSig),
     });
-  return res.ok;
+    return true;
+  } catch {
+    // TODO: Error Handling
+    return false;
+  }
 };
 
 export const requestClientRegistrationAndSessionUpgrade = async (
@@ -73,10 +69,16 @@ export const requestClientRegistrationAndSessionUpgrade = async (
 };
 
 export const requestMasterKeyDownload = async (decryptKey: CryptoKey, verifyKey: CryptoKey) => {
-  const res = await callGetApi("/api/mek/list");
+  const trpc = useTRPC();
-  if (!res.ok) return false;
+
+  let masterKeysWrapped;
+  try {
+    masterKeysWrapped = await trpc.mek.list.query();
+  } catch {
+    // TODO: Error Handling
+    return false;
+  }
 
-  const { meks: masterKeysWrapped }: MasterKeyListResponse = await res.json();
   const masterKeys = await Promise.all(
     masterKeysWrapped.map(
       async ({ version, state, mek: masterKeyWrapped, mekSig: masterKeyWrappedSig }) => {
@@ -108,17 +110,32 @@ export const requestInitialMasterKeyAndHmacSecretRegistration = async (
   hmacSecretWrapped: string,
   signKey: CryptoKey,
 ) => {
-  let res = await callPostApi<InitialMasterKeyRegisterRequest>("/api/mek/register/initial", {
+  const trpc = useTRPC();
+
+  try {
+    await trpc.mek.registerInitial.mutate({
       mek: masterKeyWrapped,
       mekSig: await signMasterKeyWrapped(masterKeyWrapped, 1, signKey),
     });
-  if (!res.ok) {
+  } catch (e) {
-    return res.status === 403 || res.status === 409;
+    if (
+      e instanceof TRPCClientError &&
+      (e.data?.code === "FORBIDDEN" || e.data?.code === "CONFLICT")
+    ) {
+      return true;
+    }
+    // TODO: Error Handling
+    return false;
   }
 
-  res = await callPostApi<InitialHmacSecretRegisterRequest>("/api/hsk/register/initial", {
+  try {
+    await trpc.hsk.registerInitial.mutate({
       mekVersion: 1,
       hsk: hmacSecretWrapped,
     });
-  return res.ok;
+    return true;
+  } catch {
+    // TODO: Error Handling
+    return false;
+  }
 };

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

@@ -5,8 +5,12 @@
   import { goto } from "$app/navigation";
   import { FullscreenDiv } from "$lib/components/atoms";
   import { Categories, IconEntryButton, TopBar } from "$lib/components/molecules";
-  import { getCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem2";
+  import {
-  import { getFileInfo } from "$lib/modules/filesystem2";
+    getFileInfo,
+    getCategoryInfo,
+    type FileInfo,
+    type CategoryInfo,
+  } from "$lib/modules/filesystem";
   import { captureVideoThumbnail } from "$lib/modules/thumbnail";
   import { fileDownloadStatusStore, isFileDownloading, masterKeyStore } from "$lib/stores";
   import AddToCategoryBottomSheet from "./AddToCategoryBottomSheet.svelte";
@@ -24,7 +28,8 @@
 
   let { data } = $props();
 
-  let info = $derived(getFileInfo(data.id, $masterKeyStore?.get(1)?.key!));
+  let info: Writable<FileInfo | null> | undefined = $state();
+  let categories: Writable<CategoryInfo | null>[] = $state([]);
 
   let isAddToCategoryBottomSheetOpen = $state(false);
 
@@ -80,14 +85,19 @@
   };
 
   $effect(() => {
-    data.id;
+    info = getFileInfo(data.id, $masterKeyStore?.get(1)?.key!);
     isDownloadRequested = false;
     viewerType = undefined;
   });
 
   $effect(() => {
-    if ($info.data?.dataKey && $info.data?.contentIv) {
+    categories =
-      const contentType = $info.data.contentType;
+      $info?.categoryIds.map((id) => getCategoryInfo(id, $masterKeyStore?.get(1)?.key!)) ?? [];
+  });
+
+  $effect(() => {
+    if ($info && $info.dataKey && $info.contentIv) {
+      const contentType = $info.contentType;
       if (contentType.startsWith("image")) {
         viewerType = "image";
       } else if (contentType.startsWith("video")) {
@@ -97,23 +107,21 @@
       untrack(() => {
         if (!downloadStatus && !isDownloadRequested) {
           isDownloadRequested = true;
-          requestFileDownload(data.id, $info.data.contentIv!, $info.data.dataKey!).then(
+          requestFileDownload(data.id, $info.contentIv!, $info.dataKey!).then(async (buffer) => {
-            async (buffer) => {
             const blob = await updateViewer(buffer, contentType);
             if (!viewerType) {
-                FileSaver.saveAs(blob, $info.data.name);
+              FileSaver.saveAs(blob, $info.name);
             }
-            },
+          });
-          );
         }
       });
     }
   });
 
   $effect(() => {
-    if ($info.status === "success" && $downloadStatus?.status === "decrypted") {
+    if ($info && $downloadStatus?.status === "decrypted") {
       untrack(
-        () => !isDownloadRequested && updateViewer($downloadStatus.result!, $info.data.contentType),
+        () => !isDownloadRequested && updateViewer($downloadStatus.result!, $info.contentType),
       );
     }
   });
@@ -125,11 +133,11 @@
   <title>파일</title>
 </svelte:head>
 
-<TopBar title={$info.data?.name} />
+<TopBar title={$info?.name} />
 <FullscreenDiv>
   <div class="space-y-4 pb-4">
     <DownloadStatus status={downloadStatus} />
-    {#if $info.status === "success" && viewerType}
+    {#if $info && viewerType}
       <div class="flex w-full justify-center">
         {#snippet viewerLoading(message: string)}
           <p class="text-gray-500">{message}</p>
@@ -137,7 +145,7 @@
 
         {#if viewerType === "image"}
           {#if fileBlobUrl}
-            <img src={fileBlobUrl} alt={$info.data.name} onerror={convertHeicToJpeg} />
+            <img src={fileBlobUrl} alt={$info.name} onerror={convertHeicToJpeg} />
           {:else}
             {@render viewerLoading("이미지를 불러오고 있어요.")}
           {/if}
@@ -148,7 +156,7 @@
               <video bind:this={videoElement} src={fileBlobUrl} controls muted></video>
               <IconEntryButton
                 icon={IconCamera}
-                onclick={() => updateThumbnail($info.data.dataKey!, $info.data.dataKeyVersion!)}
+                onclick={() => updateThumbnail($info.dataKey!, $info.dataKeyVersion!)}
                 class="w-full"
               >
                 이 장면을 썸네일로 설정하기
@@ -164,7 +172,7 @@
       <p class="text-lg font-bold">카테고리</p>
       <div class="space-y-1">
         <Categories
-          categoryIds={$info.data?.categoryIds ?? []}
+          {categories}
           categoryMenuIcon={IconClose}
           onCategoryClick={({ id }) => goto(`/category/${id}`)}
           onCategoryMenuClick={({ id }) => removeFromCategory(id)}

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

@@ -1,8 +1,9 @@
 <script lang="ts">
+  import type { Writable } from "svelte/store";
   import { BottomDiv, BottomSheet, Button, FullscreenDiv } from "$lib/components/atoms";
   import { SubCategories } from "$lib/components/molecules";
   import { CategoryCreateModal } from "$lib/components/organisms";
-  import { getCategoryInfo, type CategoryInfoStore } from "$lib/modules/filesystem2";
+  import { getCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem";
   import { masterKeyStore } from "$lib/stores";
   import { requestCategoryCreation } from "./service";
 
@@ -13,7 +14,7 @@
 
   let { onAddToCategoryClick, isOpen = $bindable() }: Props = $props();
 
-  let category: CategoryInfoStore | undefined = $state();
+  let category: Writable<CategoryInfo | null> | undefined = $state();
 
   let isCategoryCreateModalOpen = $state(false);
 
@@ -24,20 +25,20 @@
   });
 </script>
 
-{#if $category?.status === "success"}
+{#if $category}
   <BottomSheet bind:isOpen class="flex flex-col">
     <FullscreenDiv>
       <SubCategories
         class="py-4"
-        info={$category.data}
+        info={$category}
         onSubCategoryClick={({ id }) =>
           (category = getCategoryInfo(id, $masterKeyStore?.get(1)?.key!))}
         onSubCategoryCreateClick={() => (isCategoryCreateModalOpen = true)}
         subCategoryCreatePosition="top"
       />
-      {#if $category.data.id !== "root"}
+      {#if $category.id !== "root"}
         <BottomDiv>
-          <Button onclick={() => onAddToCategoryClick($category.data.id as number)} class="w-full">
+          <Button onclick={() => onAddToCategoryClick($category.id)} class="w-full">
             이 카테고리에 추가하기
           </Button>
         </BottomDiv>
@@ -49,8 +50,8 @@
 <CategoryCreateModal
   bind:isOpen={isCategoryCreateModalOpen}
   onCreateClick={async (name: string) => {
-    if (await requestCategoryCreation(name, $category!.data!.id, $masterKeyStore?.get(1)!)) {
+    if (await requestCategoryCreation(name, $category!.id, $masterKeyStore?.get(1)!)) {
-      category = getCategoryInfo($category!.data!.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+      category = getCategoryInfo($category!.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
       return true;
     }
     return false;

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

@@ -1,6 +1,6 @@
 <script lang="ts">
   import { get, type Writable } from "svelte/store";
-  import { getFileInfo } from "$lib/modules/filesystem2";
+  import { getFileInfo, type FileInfo } from "$lib/modules/filesystem";
   import { formatNetworkSpeed } from "$lib/modules/util";
   import { masterKeyStore, type FileDownloadStatus } from "$lib/stores";
 
@@ -17,10 +17,14 @@
 
   let { status }: Props = $props();
 
-  let fileInfo = $derived(getFileInfo(get(status).id, $masterKeyStore?.get(1)?.key!));
+  let fileInfo: Writable<FileInfo | null> | undefined = $state();
+
+  $effect(() => {
+    fileInfo = getFileInfo(get(status).id, $masterKeyStore?.get(1)?.key!);
+  });
 </script>
 
-{#if $fileInfo.status === "success"}
+{#if $fileInfo}
   <div class="flex h-14 items-center gap-x-4 p-2">
     <div class="flex-shrink-0 text-lg text-gray-600">
       {#if $status.status === "download-pending"}
@@ -38,8 +42,8 @@
       {/if}
     </div>
     <div class="flex-grow overflow-hidden">
-      <p title={$fileInfo.data.name} class="truncate font-medium">
+      <p title={$fileInfo.name} class="truncate font-medium">
-        {$fileInfo.data.name}
+        {$fileInfo.name}
       </p>
       <p class="text-xs text-gray-800">
         {#if $status.status === "download-pending"}

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

@@ -1,17 +1,18 @@
 <script lang="ts">
   import { onMount } from "svelte";
+  import type { Writable } from "svelte/store";
   import { FullscreenDiv } from "$lib/components/atoms";
   import { TopBar } from "$lib/components/molecules";
   import type { FileCacheIndex } from "$lib/indexedDB";
   import { getFileCacheIndex, deleteFileCache as doDeleteFileCache } from "$lib/modules/file";
-  import { getFileInfo, type FileInfoStore } from "$lib/modules/filesystem2";
+  import { getFileInfo, type FileInfo } from "$lib/modules/filesystem";
   import { formatFileSize } from "$lib/modules/util";
   import { masterKeyStore } from "$lib/stores";
   import File from "./File.svelte";
 
   interface FileCache {
     index: FileCacheIndex;
-    fileInfo: FileInfoStore;
+    fileInfo: Writable<FileInfo | null>;
   }
 
   let fileCache: FileCache[] | undefined = $state();

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

@@ -1,6 +1,7 @@
 <script lang="ts">
+  import type { Writable } from "svelte/store";
   import type { FileCacheIndex } from "$lib/indexedDB";
-  import type { FileInfoStore } from "$lib/modules/filesystem2";
+  import type { FileInfo } from "$lib/modules/filesystem";
   import { formatDate, formatFileSize } from "$lib/modules/util";
 
   import IconDraft from "~icons/material-symbols/draft";
@@ -9,7 +10,7 @@
 
   interface Props {
     index: FileCacheIndex;
-    info: FileInfoStore;
+    info: Writable<FileInfo | null>;
     onDeleteClick: (fileId: number) => void;
   }
 
@@ -27,8 +28,8 @@
     </div>
   {/if}
   <div class="flex-grow overflow-hidden">
-    {#if $info.status === "success"}
+    {#if $info}
-      <p title={$info.data.name} class="truncate font-medium">{$info.data.name}</p>
+      <p title={$info.name} class="truncate font-medium">{$info.name}</p>
     {:else}
       <p class="font-medium">삭제된 파일</p>
     {/if}

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

@@ -5,7 +5,7 @@
   import { BottomDiv, Button, FullscreenDiv } from "$lib/components/atoms";
   import { IconEntryButton, TopBar } from "$lib/components/molecules";
   import { deleteAllFileThumbnailCaches } from "$lib/modules/file";
-  import { getFileInfo } from "$lib/modules/filesystem2";
+  import { getFileInfo } from "$lib/modules/filesystem";
   import { masterKeyStore } from "$lib/stores";
   import File from "./File.svelte";
   import {
@@ -21,8 +21,8 @@
   const generateAllThumbnails = () => {
     persistentStates.files.forEach(({ info }) => {
       const fileInfo = get(info);
-      if (fileInfo.data) {
+      if (fileInfo) {
-        requestThumbnailGeneration(fileInfo.data);
+        requestThumbnailGeneration(fileInfo);
       }
     });
   };

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

@@ -4,7 +4,7 @@ import type { MissingThumbnailFileScanResponse } from "$lib/server/schemas";
 import type { PageLoad } from "./$types";
 
 export const load: PageLoad = async ({ fetch }) => {
-  const res = await callPostApi("/api/file/scanMissingThumbnails", undefined, { fetch });
+  const res = await callPostApi("/api/file/scanMissingThumbnails", undefined, fetch);
   if (!res.ok) {
     error(500, "Internal server error");
   }

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

@@ -13,14 +13,14 @@
   import type { Writable } from "svelte/store";
   import { ActionEntryButton } from "$lib/components/atoms";
   import { DirectoryEntryLabel } from "$lib/components/molecules";
-  import type { FileInfo, FileInfoStore } from "$lib/modules/filesystem2";
+  import type { FileInfo } from "$lib/modules/filesystem";
   import { formatDateTime } from "$lib/modules/util";
   import type { GenerationStatus } from "./service.svelte";
 
   import IconCamera from "~icons/material-symbols/camera";
 
   interface Props {
-    info: FileInfoStore;
+    info: Writable<FileInfo | null>;
     onclick: (selectedFile: FileInfo) => void;
     onGenerateThumbnailClick: (selectedFile: FileInfo) => void;
     generationStatus?: Writable<GenerationStatus>;
@@ -29,18 +29,18 @@
   let { info, onclick, onGenerateThumbnailClick, generationStatus }: Props = $props();
 </script>
 
-{#if $info.status === "success"}
+{#if $info}
   <ActionEntryButton
     class="h-14"
-    onclick={() => onclick($info.data)}
+    onclick={() => onclick($info)}
     actionButtonIcon={!$generationStatus || $generationStatus === "error" ? IconCamera : undefined}
-    onActionButtonClick={() => onGenerateThumbnailClick($info.data)}
+    onActionButtonClick={() => onGenerateThumbnailClick($info)}
     actionButtonClass="text-gray-800"
   >
     {@const subtext =
       $generationStatus && $generationStatus !== "uploaded"
         ? subtexts[$generationStatus]
-        : formatDateTime($info.data.createdAt ?? $info.data.lastModifiedAt)}
+        : formatDateTime($info.createdAt ?? $info.lastModifiedAt)}
-    <DirectoryEntryLabel type="file" name={$info.data.name} {subtext} />
+    <DirectoryEntryLabel type="file" name={$info.name} {subtext} />
   </ActionEntryButton>
 {/if}

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

@@ -2,7 +2,7 @@ import { limitFunction } from "p-limit";
 import { get, writable, type Writable } from "svelte/store";
 import { encryptData } from "$lib/modules/crypto";
 import { storeFileThumbnailCache } from "$lib/modules/file";
-import type { FileInfo, FileInfoStore } from "$lib/modules/filesystem2";
+import type { FileInfo } from "$lib/modules/filesystem";
 import { generateThumbnail as doGenerateThumbnail } from "$lib/modules/thumbnail";
 import { requestFileDownload, requestFileThumbnailUpload } from "$lib/services/file";
 
@@ -17,7 +17,7 @@ export type GenerationStatus =
 
 interface File {
   id: number;
-  info: FileInfoStore;
+  info: Writable<FileInfo | null>;
   status?: Writable<GenerationStatus>;
 }
 

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

@@ -1,8 +1,9 @@
 <script lang="ts">
+  import type { Writable } from "svelte/store";
   import { goto } from "$app/navigation";
   import { TopBar } from "$lib/components/molecules";
   import { Category, CategoryCreateModal } from "$lib/components/organisms";
-  import { getCategoryInfo, useCategoryFileRecursionToggle } from "$lib/modules/filesystem2";
+  import { getCategoryInfo, updateCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem";
   import { masterKeyStore } from "$lib/stores";
   import CategoryDeleteModal from "./CategoryDeleteModal.svelte";
   import CategoryMenuBottomSheet from "./CategoryMenuBottomSheet.svelte";
@@ -18,9 +19,9 @@
   let { data } = $props();
   let context = createContext();
 
-  let info = $derived(getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!));
+  let info: Writable<CategoryInfo | null> | undefined = $state();
-  let toggleFileRecursion = useCategoryFileRecursionToggle();
+
-  let isFileRecursive = $derived($info.data?.isFileRecursive);
+  let isFileRecursive: boolean | undefined = $state();
 
   let isCategoryCreateModalOpen = $state(false);
   let isCategoryMenuBottomSheetOpen = $state(false);
@@ -28,8 +29,19 @@
   let isCategoryDeleteModalOpen = $state(false);
 
   $effect(() => {
-    if (isFileRecursive !== undefined && $info.data?.isFileRecursive !== isFileRecursive) {
+    info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!);
-      $toggleFileRecursion.mutate({ id: data.id as number, isFileRecursive });
+    isFileRecursive = undefined;
+  });
+
+  $effect(() => {
+    if ($info && isFileRecursive === undefined) {
+      isFileRecursive = $info.isFileRecursive ?? false;
+    }
+  });
+
+  $effect(() => {
+    if (data.id !== "root" && $info?.isFileRecursive !== isFileRecursive) {
+      updateCategoryInfo(data.id as number, { isFileRecursive });
     }
   });
 </script>
@@ -39,13 +51,13 @@
 </svelte:head>
 
 {#if data.id !== "root"}
-  <TopBar title={$info.data?.name} />
+  <TopBar title={$info?.name} />
 {/if}
 <div class="min-h-full bg-gray-100 pb-[5.5em]">
-  {#if $info.status === "success"}
+  {#if $info && isFileRecursive !== undefined}
     <Category
       bind:isFileRecursive
-      info={$info.data}
+      info={$info}
       onFileClick={({ id }) => goto(`/file/${id}`)}
       onFileRemoveClick={async ({ id }) => {
         await requestFileRemovalFromCategory(id, data.id as number);

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

@@ -1,23 +1,10 @@
 <script lang="ts">
   import { onMount } from "svelte";
+  import type { Writable } from "svelte/store";
   import { goto } from "$app/navigation";
   import { FloatingButton } from "$lib/components/atoms";
   import { TopBar } from "$lib/components/molecules";
-  import {
+  import { getDirectoryInfo, type DirectoryInfo } from "$lib/modules/filesystem";
-    storeFileCache,
-    deleteFileCache,
-    storeFileThumbnailCache,
-    deleteFileThumbnailCache,
-  } from "$lib/modules/file";
-  import {
-    getDirectoryInfo,
-    useDirectoryCreation,
-    useDirectoryRename,
-    useDirectoryDeletion,
-    useFileUpload,
-    useFileRename,
-    useFileDeletion,
-  } from "$lib/modules/filesystem2";
   import { masterKeyStore, hmacSecretStore } from "$lib/stores";
   import DirectoryCreateModal from "./DirectoryCreateModal.svelte";
   import DirectoryEntries from "./DirectoryEntries";
@@ -28,23 +15,21 @@
   import EntryMenuBottomSheet from "./EntryMenuBottomSheet.svelte";
   import EntryRenameModal from "./EntryRenameModal.svelte";
   import UploadStatusCard from "./UploadStatusCard.svelte";
-  import { createContext, requestHmacSecretDownload } from "./service.svelte";
+  import {
+    createContext,
+    requestHmacSecretDownload,
+    requestDirectoryCreation,
+    requestFileUpload,
+    requestEntryRename,
+    requestEntryDeletion,
+  } from "./service.svelte";
 
   import IconAdd from "~icons/material-symbols/add";
 
   let { data } = $props();
   let context = createContext();
 
-  let info = $derived(getDirectoryInfo(data.id, $masterKeyStore?.get(1)?.key!));
+  let info: Writable<DirectoryInfo | null> | undefined = $state();
-  let requestDirectoryCreation = $derived(useDirectoryCreation(data.id, $masterKeyStore?.get(1)!));
-  let requestDirectoryRename = useDirectoryRename();
-  let requestDirectoryDeletion = $derived(useDirectoryDeletion(data.id));
-  let requestFileUpload = $derived(
-    useFileUpload(data.id, $masterKeyStore?.get(1)!, $hmacSecretStore?.get(1)!),
-  );
-  let requestFileRename = $derived(useFileRename());
-  let requestFileDeletion = $derived(useFileDeletion(data.id));
-
   let fileInput: HTMLInputElement | undefined = $state();
   let duplicatedFile: File | undefined = $state();
   let resolveForDuplicateFileModal: ((res: boolean) => void) | undefined = $state();
@@ -62,24 +47,21 @@
     if (!files || files.length === 0) return;
 
     for (const file of files) {
-      $requestFileUpload
+      requestFileUpload(file, data.id, $hmacSecretStore?.get(1)!, $masterKeyStore?.get(1)!, () => {
-        .mutateAsync({
-          file,
-          onDuplicate: () => {
         return new Promise((resolve) => {
           duplicatedFile = file;
           resolveForDuplicateFileModal = resolve;
           isDuplicateFileModalOpen = true;
         });
-          },
       })
         .then((res) => {
-          if (res) {
+          if (!res) return;
-            storeFileCache(res.fileId, res.fileBuffer); // Intended
+          // TODO: FIXME
-            if (res.thumbnailBuffer) {
+          info = getDirectoryInfo(data.id, $masterKeyStore?.get(1)?.key!);
-              storeFileThumbnailCache(res.fileId, res.thumbnailBuffer); // Intended
+        })
-            }
+        .catch((e: Error) => {
-          }
+          // TODO: FIXME
+          console.error(e);
         });
     }
 
@@ -91,6 +73,10 @@
       throw new Error("Failed to download hmac secrets");
     }
   });
+
+  $effect(() => {
+    info = getDirectoryInfo(data.id, $masterKeyStore?.get(1)?.key!);
+  });
 </script>
 
 <svelte:head>
@@ -101,17 +87,17 @@
 
 <div class="flex h-full flex-col">
   {#if data.id !== "root"}
-    <TopBar title={$info.data?.name} class="flex-shrink-0" />
+    <TopBar title={$info?.name} class="flex-shrink-0" />
   {/if}
-  {#if $info.status === "success"}
+  {#if $info}
     <div class={["flex flex-grow flex-col px-4 pb-4", data.id === "root" && "pt-4"]}>
       <div class="flex gap-x-2">
         <UploadStatusCard onclick={() => goto("/file/uploads")} />
         <DownloadStatusCard onclick={() => goto("/file/downloads")} />
       </div>
-      {#key $info.data.id}
+      {#key $info}
         <DirectoryEntries
-          info={$info.data}
+          info={$info}
           onEntryClick={({ type, id }) => goto(`/${type}/${id}`)}
           onEntryMenuClick={(entry) => {
             context.selectedEntry = entry;
@@ -144,8 +130,11 @@
 <DirectoryCreateModal
   bind:isOpen={isDirectoryCreateModalOpen}
   onCreateClick={async (name) => {
-    $requestDirectoryCreation.mutate({ name });
+    if (await requestDirectoryCreation(name, data.id, $masterKeyStore?.get(1)!)) {
-    return true; // TODO
+      info = getDirectoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
+      return true;
+    }
+    return false;
   }}
 />
 <DuplicateFileModal
@@ -175,45 +164,20 @@
 <EntryRenameModal
   bind:isOpen={isEntryRenameModalOpen}
   onRenameClick={async (newName: string) => {
-    if (context.selectedEntry!.type === "directory") {
+    if (await requestEntryRename(context.selectedEntry!, newName)) {
-      $requestDirectoryRename.mutate({
+      info = getDirectoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
-        id: context.selectedEntry!.id,
+      return true;
-        dataKey: context.selectedEntry!.dataKey,
-        dataKeyVersion: context.selectedEntry!.dataKeyVersion,
-        newName,
-      });
-      return true; // TODO
-    } else {
-      $requestFileRename.mutate({
-        id: context.selectedEntry!.id,
-        dataKey: context.selectedEntry!.dataKey,
-        dataKeyVersion: context.selectedEntry!.dataKeyVersion,
-        newName,
-      });
-      return true; // TODO
     }
+    return false;
   }}
 />
 <EntryDeleteModal
   bind:isOpen={isEntryDeleteModalOpen}
   onDeleteClick={async () => {
-    if (context.selectedEntry!.type === "directory") {
+    if (await requestEntryDeletion(context.selectedEntry!)) {
-      const res = await $requestDirectoryDeletion.mutateAsync({ id: context.selectedEntry!.id });
+      info = getDirectoryInfo(data.id, $masterKeyStore?.get(1)?.key!); // TODO: FIXME
-      if (!res) return false;
+      return true;
-      await Promise.all(
-        res.deletedFiles.flatMap((fileId) => [
-          deleteFileCache(fileId),
-          deleteFileThumbnailCache(fileId),
-        ]),
-      );
-      return true; // TODO
-    } else {
-      await $requestFileDeletion.mutateAsync({ id: context.selectedEntry!.id });
-      await Promise.all([
-        deleteFileCache(context.selectedEntry!.id),
-        deleteFileThumbnailCache(context.selectedEntry!.id),
-      ]);
-      return true; // TODO
     }
+    return false;
   }}
 />

src/routes/(main)/directory/[[id]]/DirectoryEntries/DirectoryEntries.svelte

@@ -1,12 +1,12 @@
 <script lang="ts">
-  import { derived } from "svelte/store";
+  import { untrack } from "svelte";
+  import { get, type Writable } from "svelte/store";
   import {
     getDirectoryInfo,
     getFileInfo,
     type DirectoryInfo,
-    type SubDirectoryInfo,
     type FileInfo,
-  } from "$lib/modules/filesystem2";
+  } from "$lib/modules/filesystem";
   import { SortBy, sortEntries } from "$lib/modules/util";
   import {
     fileUploadStatusStore,
@@ -30,84 +30,88 @@
 
   interface DirectoryEntry {
     name?: string;
-    info: SubDirectoryInfo;
+    info: Writable<DirectoryInfo | null>;
   }
 
   type FileEntry =
     | {
         type: "file";
         name?: string;
-        info: FileInfo;
+        info: Writable<FileInfo | null>;
       }
     | {
         type: "uploading-file";
         name: string;
-        info: FileUploadStatus;
+        info: Writable<FileUploadStatus>;
       };
 
-  let subDirectories = $derived(
+  let subDirectories: DirectoryEntry[] = $state([]);
-    derived(
+  let files: FileEntry[] = $state([]);
-      info.subDirectoryIds.map((id) => getDirectoryInfo(id, $masterKeyStore?.get(1)?.key!)),
+
-      (infos) => {
+  $effect(() => {
-        const subDirectories = infos
+    // TODO: Fix duplicated requests
-          .filter(($info) => $info.status === "success")
+
-          .map(
+    subDirectories = info.subDirectoryIds.map((id) => {
-            ($info) =>
+      const info = getDirectoryInfo(id, $masterKeyStore?.get(1)?.key!);
-              ({
+      return { name: get(info)?.name, info };
-                name: $info.data.name,
+    });
-                info: $info.data as SubDirectoryInfo,
+    files = info.fileIds
-              }) satisfies DirectoryEntry,
+      .map((id): FileEntry => {
-          );
+        const info = getFileInfo(id, $masterKeyStore?.get(1)?.key!);
-        sortEntries(subDirectories, sortBy);
+        return {
-        return subDirectories;
-      },
-    ),
-  );
-  let files = $derived(
-    derived(
-      info.fileIds.map((id) => getFileInfo(id, $masterKeyStore?.get(1)?.key!)),
-      (infos) =>
-        infos
-          .filter(($info) => $info.status === "success")
-          .map(
-            ($info) =>
-              ({
           type: "file",
-                name: $info.data.name,
+          name: get(info)?.name,
-                info: $info.data,
+          info,
-              }) satisfies FileEntry,
+        };
-          ),
+      })
-    ),
+      .concat(
-  );
+        $fileUploadStatusStore
-  let uploadingFiles = $derived(
+          .filter((statusStore) => {
-    derived($fileUploadStatusStore, (statuses) =>
+            const { parentId, status } = get(statusStore);
-      statuses
+            return parentId === info.id && isFileUploading(status);
-        .filter(({ parentId, status }) => parentId === info.id && isFileUploading(status))
+          })
-        .map(
+          .map((status) => ({
-          ($status) =>
-            ({
             type: "uploading-file",
-              name: $status.name,
+            name: get(status).name,
-              info: $status,
+            info: status,
-            }) satisfies FileEntry,
+          })),
-        ),
-    ),
       );
-  let everyFiles = $derived(
+
-    derived([files, uploadingFiles], ([$files, $uploadingFiles]) => {
+    const sort = () => {
-      const allFiles = [...$files, ...$uploadingFiles];
+      sortEntries(subDirectories, sortBy);
-      sortEntries(allFiles, sortBy);
+      sortEntries(files, sortBy);
-      return allFiles;
+    };
+    return untrack(() => {
+      sort();
+
+      const unsubscribes = subDirectories
+        .map((subDirectory) =>
+          subDirectory.info.subscribe((value) => {
+            if (subDirectory.name === value?.name) return;
+            subDirectory.name = value?.name;
+            sort();
           }),
+        )
+        .concat(
+          files.map((file) =>
+            file.info.subscribe((value) => {
+              if (file.name === value?.name) return;
+              file.name = value?.name;
+              sort();
+            }),
+          ),
         );
+      return () => unsubscribes.forEach((unsubscribe) => unsubscribe());
+    });
+  });
 </script>
 
-{#if $subDirectories.length + $everyFiles.length > 0}
+{#if subDirectories.length + files.length > 0}
   <div class="space-y-1 pb-[4.5rem]">
-    {#each $subDirectories as { info }}
+    {#each subDirectories as { info }}
       <SubDirectory {info} onclick={onEntryClick} onOpenMenuClick={onEntryMenuClick} />
     {/each}
-    {#each $everyFiles as file}
+    {#each files as file}
       {#if file.type === "file"}
         <File info={file.info} onclick={onEntryClick} onOpenMenuClick={onEntryMenuClick} />
       {:else}

src/routes/(main)/directory/[[id]]/DirectoryEntries/File.svelte

@@ -1,7 +1,8 @@
 <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 "$lib/modules/filesystem2";
+  import type { FileInfo } from "$lib/modules/filesystem";
   import { formatDateTime } from "$lib/modules/util";
   import { requestFileThumbnailDownload } from "./service";
   import type { SelectedEntry } from "../service.svelte";
@@ -9,7 +10,7 @@
   import IconMoreVert from "~icons/material-symbols/more-vert";
 
   interface Props {
-    info: FileInfo;
+    info: Writable<FileInfo | null>;
     onclick: (selectedEntry: SelectedEntry) => void;
     onOpenMenuClick: (selectedEntry: SelectedEntry) => void;
   }
@@ -19,22 +20,22 @@
   let thumbnail: string | undefined = $state();
 
   const openFile = () => {
-    const { id, dataKey, dataKeyVersion, name } = info;
+    const { id, dataKey, dataKeyVersion, name } = $info!;
     if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
 
     onclick({ type: "file", id, dataKey, dataKeyVersion, name });
   };
 
   const openMenu = () => {
-    const { id, dataKey, dataKeyVersion, name } = info;
+    const { id, dataKey, dataKeyVersion, name } = $info!;
     if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
 
     onOpenMenuClick({ type: "file", id, dataKey, dataKeyVersion, name });
   };
 
   $effect(() => {
-    if (info.dataKey) {
+    if ($info) {
-      requestFileThumbnailDownload(info.id, info.dataKey)
+      requestFileThumbnailDownload($info.id, $info.dataKey)
         .then((thumbnailUrl) => {
           thumbnail = thumbnailUrl ?? undefined;
         })
@@ -48,6 +49,7 @@
   });
 </script>
 
+{#if $info}
   <ActionEntryButton
     class="h-14"
     onclick={openFile}
@@ -57,7 +59,8 @@
     <DirectoryEntryLabel
       type="file"
       {thumbnail}
-    name={info.name}
+      name={$info.name}
-    subtext={formatDateTime(info.createdAt ?? info.lastModifiedAt)}
+      subtext={formatDateTime($info.createdAt ?? $info.lastModifiedAt)}
     />
   </ActionEntryButton>
+{/if}

src/routes/(main)/directory/[[id]]/DirectoryEntries/SubDirectory.svelte

@@ -1,13 +1,16 @@
 <script lang="ts">
+  import type { Writable } from "svelte/store";
   import { ActionEntryButton } from "$lib/components/atoms";
   import { DirectoryEntryLabel } from "$lib/components/molecules";
-  import type { SubDirectoryInfo } from "$lib/modules/filesystem2";
+  import type { DirectoryInfo } from "$lib/modules/filesystem";
   import type { SelectedEntry } from "../service.svelte";
 
   import IconMoreVert from "~icons/material-symbols/more-vert";
 
+  type SubDirectoryInfo = DirectoryInfo & { id: number };
+
   interface Props {
-    info: SubDirectoryInfo;
+    info: Writable<DirectoryInfo | null>;
     onclick: (selectedEntry: SelectedEntry) => void;
     onOpenMenuClick: (selectedEntry: SelectedEntry) => void;
   }
@@ -15,25 +18,27 @@
   let { info, onclick, onOpenMenuClick }: Props = $props();
 
   const openDirectory = () => {
-    const { id, dataKey, dataKeyVersion, name } = info;
+    const { id, dataKey, dataKeyVersion, name } = $info as SubDirectoryInfo;
     if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
 
     onclick({ type: "directory", id, dataKey, dataKeyVersion, name });
   };
 
   const openMenu = () => {
-    const { id, dataKey, dataKeyVersion, name } = info;
+    const { id, dataKey, dataKeyVersion, name } = $info as SubDirectoryInfo;
     if (!dataKey || !dataKeyVersion) return; // TODO: Error handling
 
     onOpenMenuClick({ type: "directory", id, dataKey, dataKeyVersion, name });
   };
 </script>
 
+{#if $info}
   <ActionEntryButton
     class="h-14"
     onclick={openDirectory}
     actionButtonIcon={IconMoreVert}
     onActionButtonClick={openMenu}
   >
-  <DirectoryEntryLabel type="directory" name={info.name} />
+    <DirectoryEntryLabel type="directory" name={$info.name!} />
   </ActionEntryButton>
+{/if}

src/routes/(main)/directory/[[id]]/DirectoryEntries/UploadingFile.svelte

@@ -1,35 +1,36 @@
 <script lang="ts">
+  import type { Writable } from "svelte/store";
   import { formatNetworkSpeed } from "$lib/modules/util";
   import { isFileUploading, type FileUploadStatus } from "$lib/stores";
 
   import IconDraft from "~icons/material-symbols/draft";
 
   interface Props {
-    status: FileUploadStatus;
+    status: Writable<FileUploadStatus>;
   }
 
   let { status }: Props = $props();
 </script>
 
-{#if isFileUploading(status.status)}
+{#if isFileUploading($status.status)}
   <div class="flex h-14 gap-x-4 p-2">
     <div class="flex h-10 w-10 flex-shrink-0 items-center justify-center text-xl">
       <IconDraft class="text-gray-600" />
     </div>
     <div class="flex flex-grow flex-col overflow-hidden text-gray-800">
-      <p title={status.name} class="truncate font-medium">
+      <p title={$status.name} class="truncate font-medium">
-        {status.name}
+        {$status.name}
       </p>
       <p class="text-xs">
-        {#if status.status === "encryption-pending"}
+        {#if $status.status === "encryption-pending"}
           준비 중
-        {:else if status.status === "encrypting"}
+        {:else if $status.status === "encrypting"}
           암호화하는 중
-        {:else if status.status === "upload-pending"}
+        {:else if $status.status === "upload-pending"}
           업로드를 기다리는 중
-        {:else if status.status === "uploading"}
+        {:else if $status.status === "uploading"}
-          전송됨 {Math.floor((status.progress ?? 0) * 100)}% ·
+          전송됨 {Math.floor(($status.progress ?? 0) * 100)}% ·
-          {formatNetworkSpeed((status.rate ?? 0) * 8)}
+          {formatNetworkSpeed(($status.rate ?? 0) * 8)}
         {/if}
       </p>
     </div>

src/routes/(main)/directory/[[id]]/service.svelte.ts

@@ -1,5 +1,5 @@
 import { getContext, setContext } from "svelte";
-import { callGetApi, callPostApi } from "$lib/hooks";
+import { callPostApi } from "$lib/hooks";
 import { storeHmacSecrets } from "$lib/indexedDB";
 import { generateDataKey, wrapDataKey, unwrapHmacSecret, encryptString } from "$lib/modules/crypto";
 import {
@@ -13,10 +13,10 @@ import type {
   DirectoryRenameRequest,
   DirectoryCreateRequest,
   FileRenameRequest,
-  HmacSecretListResponse,
   DirectoryDeleteResponse,
 } from "$lib/server/schemas";
 import { hmacSecretStore, type MasterKey, type HmacSecret } from "$lib/stores";
+import { useTRPC } from "$trpc/client";
 
 export interface SelectedEntry {
   type: "directory" | "file";
@@ -40,10 +40,16 @@ export const useContext = () => {
 export const requestHmacSecretDownload = async (masterKey: CryptoKey) => {
   // TODO: MEK rotation
 
-  const res = await callGetApi("/api/hsk/list");
+  const trpc = useTRPC();
-  if (!res.ok) return false;
+
+  let hmacSecretsWrapped;
+  try {
+    hmacSecretsWrapped = await trpc.hsk.list.query();
+  } catch {
+    // TODO: Error Handling
+    return false;
+  }
 
-  const { hsks: hmacSecretsWrapped }: HmacSecretListResponse = await res.json();
   const hmacSecrets = await Promise.all(
     hmacSecretsWrapped.map(async ({ version, state, hsk: hmacSecretWrapped }) => {
       const { hmacSecret } = await unwrapHmacSecret(hmacSecretWrapped, masterKey);

src/routes/(main)/menu/+page.ts

@@ -1,14 +1,14 @@
 import { error } from "@sveltejs/kit";
-import { callGetApi } from "$lib/hooks";
+import { useTRPC } from "$trpc/client";
-import type { UserInfoResponse } from "$lib/server/schemas";
 import type { PageLoad } from "./$types";
 
 export const load: PageLoad = async ({ fetch }) => {
-  const res = await callGetApi("/api/user", { fetch });
+  const trpc = useTRPC(fetch);
-  if (!res.ok) {
+
+  try {
+    const { nickname } = await trpc.user.info.query();
+    return { nickname };
+  } catch {
     error(500, "Internal server error");
   }
-
-  const { nickname }: UserInfoResponse = await res.json();
-  return { nickname };
 };

src/routes/+layout.svelte

@@ -1,8 +1,6 @@
 <script lang="ts">
-  import { QueryClient, QueryClientProvider } from "@tanstack/svelte-query";
   import { onMount } from "svelte";
   import { get } from "svelte/store";
-  import { browser } from "$app/environment";
   import { goto as svelteGoto } from "$app/navigation";
   import {
     fileUploadStatusStore,
@@ -12,19 +10,10 @@
     clientKeyStore,
     masterKeyStore,
   } from "$lib/stores";
-
   import "../app.css";
 
   let { children } = $props();
 
-  const queryClient = new QueryClient({
-    defaultOptions: {
-      queries: {
-        enabled: browser,
-      },
-    },
-  });
-
   const protectFileUploadAndDownload = (e: BeforeUnloadEvent) => {
     if (
       $fileUploadStatusStore.some((status) => isFileUploading(get(status).status)) ||
@@ -35,8 +24,6 @@
   };
 
   onMount(async () => {
-    window.__TANSTACK_QUERY_CLIENT__ = queryClient;
-
     const goto = async (url: string) => {
       const whitelist = ["/auth/login", "/key", "/client/pending"];
       if (!whitelist.some((path) => location.pathname.startsWith(path))) {
@@ -56,6 +43,4 @@
 
 <svelte:window onbeforeunload={protectFileUploadAndDownload} />
 
-<QueryClientProvider client={queryClient}>
 {@render children()}
-</QueryClientProvider>

src/routes/api/category/create/+server.ts

@@ -1,10 +1,6 @@
-import { error, json } from "@sveltejs/kit";
+import { error, text } from "@sveltejs/kit";
 import { authorize } from "$lib/server/modules/auth";
-import {
+import { categoryCreateRequest } from "$lib/server/schemas";
-  categoryCreateRequest,
-  categoryCreateResponse,
-  type CategoryCreateResponse,
-} from "$lib/server/schemas";
 import { createCategory } from "$lib/server/services/category";
 import type { RequestHandler } from "./$types";
 
@@ -15,7 +11,7 @@ export const POST: RequestHandler = async ({ locals, request }) => {
   if (!zodRes.success) error(400, "Invalid request body");
   const { parent, mekVersion, dek, dekVersion, name, nameIv } = zodRes.data;
 
-  const { id } = await createCategory({
+  await createCategory({
     userId,
     parentId: parent,
     mekVersion,
@@ -23,5 +19,5 @@ export const POST: RequestHandler = async ({ locals, request }) => {
     dekVersion: new Date(dekVersion),
     encName: { ciphertext: name, iv: nameIv },
   });
-  return json(categoryCreateResponse.parse({ category: id } satisfies CategoryCreateResponse));
+  return text("Category created", { headers: { "Content-Type": "text/plain" } });
 };

src/routes/api/client/list/+server.ts

@@ -1,11 +0,0 @@
-import { json } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import { clientListResponse, type ClientListResponse } from "$lib/server/schemas";
-import { getUserClientList } from "$lib/server/services/client";
-import type { RequestHandler } from "./$types";
-
-export const GET: RequestHandler = async ({ locals }) => {
-  const { userId } = await authorize(locals, "anyClient");
-  const { userClients } = await getUserClientList(userId);
-  return json(clientListResponse.parse({ clients: userClients } satisfies ClientListResponse));
-};

src/routes/api/client/register/+server.ts

@@ -1,20 +0,0 @@
-import { error, json } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import {
-  clientRegisterRequest,
-  clientRegisterResponse,
-  type ClientRegisterResponse,
-} from "$lib/server/schemas";
-import { registerUserClient } from "$lib/server/services/client";
-import type { RequestHandler } from "./$types";
-
-export const POST: RequestHandler = async ({ locals, request }) => {
-  const { userId } = await authorize(locals, "notClient");
-
-  const zodRes = clientRegisterRequest.safeParse(await request.json());
-  if (!zodRes.success) error(400, "Invalid request body");
-  const { encPubKey, sigPubKey } = zodRes.data;
-
-  const { id, challenge } = await registerUserClient(userId, locals.ip, encPubKey, sigPubKey);
-  return json(clientRegisterResponse.parse({ id, challenge } satisfies ClientRegisterResponse));
-};

src/routes/api/client/register/verify/+server.ts

@@ -1,16 +0,0 @@
-import { error, text } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import { clientRegisterVerifyRequest } from "$lib/server/schemas";
-import { verifyUserClient } from "$lib/server/services/client";
-import type { RequestHandler } from "./$types";
-
-export const POST: RequestHandler = async ({ locals, request }) => {
-  const { userId } = await authorize(locals, "notClient");
-
-  const zodRes = clientRegisterVerifyRequest.safeParse(await request.json());
-  if (!zodRes.success) error(400, "Invalid request body");
-  const { id, answerSig } = zodRes.data;
-
-  await verifyUserClient(userId, locals.ip, id, answerSig);
-  return text("Client verified", { headers: { "Content-Type": "text/plain" } });
-};

src/routes/api/client/status/+server.ts

@@ -1,17 +0,0 @@
-import { json } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import { clientStatusResponse, type ClientStatusResponse } from "$lib/server/schemas";
-import { getUserClientStatus } from "$lib/server/services/client";
-import type { RequestHandler } from "./$types";
-
-export const GET: RequestHandler = async ({ locals }) => {
-  const { userId, clientId } = await authorize(locals, "anyClient");
-  const { state, isInitialMekNeeded } = await getUserClientStatus(userId, clientId);
-  return json(
-    clientStatusResponse.parse({
-      id: clientId,
-      state,
-      isInitialMekNeeded,
-    } satisfies ClientStatusResponse),
-  );
-};

src/routes/api/directory/[id]/delete/+server.ts

@@ -16,11 +16,8 @@ export const POST: RequestHandler = async ({ locals, params }) => {
   if (!zodRes.success) error(400, "Invalid path parameters");
   const { id } = zodRes.data;
 
-  const { directories, files } = await deleteDirectory(userId, id);
+  const { files } = await deleteDirectory(userId, id);
   return json(
-    directoryDeleteResponse.parse({
+    directoryDeleteResponse.parse({ deletedFiles: files } satisfies DirectoryDeleteResponse),
-      deletedDirectories: directories,
-      deletedFiles: files,
-    } satisfies DirectoryDeleteResponse),
   );
 };

src/routes/api/directory/create/+server.ts

@@ -1,10 +1,6 @@
-import { error, json } from "@sveltejs/kit";
+import { error, text } from "@sveltejs/kit";
 import { authorize } from "$lib/server/modules/auth";
-import {
+import { directoryCreateRequest } from "$lib/server/schemas";
-  directoryCreateRequest,
-  directoryCreateResponse,
-  type DirectoryCreateResponse,
-} from "$lib/server/schemas";
 import { createDirectory } from "$lib/server/services/directory";
 import type { RequestHandler } from "./$types";
 
@@ -15,7 +11,7 @@ export const POST: RequestHandler = async ({ locals, request }) => {
   if (!zodRes.success) error(400, "Invalid request body");
   const { parent, mekVersion, dek, dekVersion, name, nameIv } = zodRes.data;
 
-  const { id } = await createDirectory({
+  await createDirectory({
     userId,
     parentId: parent,
     mekVersion,
@@ -23,5 +19,5 @@ export const POST: RequestHandler = async ({ locals, request }) => {
     dekVersion: new Date(dekVersion),
     encName: { ciphertext: name, iv: nameIv },
   });
-  return json(directoryCreateResponse.parse({ directory: id } satisfies DirectoryCreateResponse));
+  return text("Directory created", { headers: { "Content-Type": "text/plain" } });
 };

src/routes/api/hsk/list/+server.ts

@@ -1,20 +0,0 @@
-import { json } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import { hmacSecretListResponse, type HmacSecretListResponse } from "$lib/server/schemas";
-import { getHskList } from "$lib/server/services/hsk";
-import type { RequestHandler } from "./$types";
-
-export const GET: RequestHandler = async ({ locals }) => {
-  const { userId } = await authorize(locals, "activeClient");
-  const { encHsks } = await getHskList(userId);
-  return json(
-    hmacSecretListResponse.parse({
-      hsks: encHsks.map(({ version, state, mekVersion, encHsk }) => ({
-        version,
-        state,
-        mekVersion,
-        hsk: encHsk,
-      })),
-    } satisfies HmacSecretListResponse),
-  );
-};

src/routes/api/hsk/register/initial/+server.ts

@@ -1,16 +0,0 @@
-import { error, text } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import { initialHmacSecretRegisterRequest } from "$lib/server/schemas";
-import { registerInitialActiveHsk } from "$lib/server/services/hsk";
-import type { RequestHandler } from "./$types";
-
-export const POST: RequestHandler = async ({ locals, request }) => {
-  const { userId, clientId } = await authorize(locals, "activeClient");
-
-  const zodRes = initialHmacSecretRegisterRequest.safeParse(await request.json());
-  if (!zodRes.success) error(400, "Invalid request body");
-  const { mekVersion, hsk } = zodRes.data;
-
-  await registerInitialActiveHsk(userId, clientId, mekVersion, hsk);
-  return text("HSK registered", { headers: { "Content-Type": "text/plain" } });
-};

src/routes/api/mek/list/+server.ts

@@ -1,20 +0,0 @@
-import { json } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import { masterKeyListResponse, type MasterKeyListResponse } from "$lib/server/schemas";
-import { getClientMekList } from "$lib/server/services/mek";
-import type { RequestHandler } from "./$types";
-
-export const GET: RequestHandler = async ({ locals }) => {
-  const { userId, clientId } = await authorize(locals, "activeClient");
-  const { encMeks } = await getClientMekList(userId, clientId);
-  return json(
-    masterKeyListResponse.parse({
-      meks: encMeks.map(({ version, state, encMek, encMekSig }) => ({
-        version,
-        state,
-        mek: encMek,
-        mekSig: encMekSig,
-      })),
-    } satisfies MasterKeyListResponse),
-  );
-};

src/routes/api/mek/register/initial/+server.ts

@@ -1,16 +0,0 @@
-import { error, text } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import { initialMasterKeyRegisterRequest } from "$lib/server/schemas";
-import { registerInitialActiveMek } from "$lib/server/services/mek";
-import type { RequestHandler } from "./$types";
-
-export const POST: RequestHandler = async ({ locals, request }) => {
-  const { userId, clientId } = await authorize(locals, "pendingClient");
-
-  const zodRes = initialMasterKeyRegisterRequest.safeParse(await request.json());
-  if (!zodRes.success) error(400, "Invalid request body");
-  const { mek, mekSig } = zodRes.data;
-
-  await registerInitialActiveMek(userId, clientId, mek, mekSig);
-  return text("MEK registered", { headers: { "Content-Type": "text/plain" } });
-};

src/routes/api/trpc/[trpc]/+server.ts

@@ -0,0 +1,15 @@
+import { fetchRequestHandler } from "@trpc/server/adapters/fetch";
+import { createContext } from "$trpc/init.server";
+import { appRouter } from "$trpc/router.server";
+import type { RequestHandler } from "./$types";
+
+const trpcHandler: RequestHandler = (event) =>
+  fetchRequestHandler({
+    endpoint: "/api/trpc",
+    req: event.request,
+    router: appRouter,
+    createContext: () => createContext(event),
+  });
+
+export const GET = trpcHandler;
+export const POST = trpcHandler;

src/routes/api/user/+server.ts

@@ -1,11 +0,0 @@
-import { json } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import { userInfoResponse, type UserInfoResponse } from "$lib/server/schemas";
-import { getUserInformation } from "$lib/server/services/user";
-import type { RequestHandler } from "./$types";
-
-export const GET: RequestHandler = async ({ locals }) => {
-  const { userId } = await authorize(locals, "any");
-  const { email, nickname } = await getUserInformation(userId);
-  return json(userInfoResponse.parse({ email, nickname } satisfies UserInfoResponse));
-};

src/routes/api/user/changeNickname/+server.ts

@@ -1,16 +0,0 @@
-import { error, text } from "@sveltejs/kit";
-import { authorize } from "$lib/server/modules/auth";
-import { nicknameChangeRequest } from "$lib/server/schemas";
-import { changeNickname } from "$lib/server/services/user";
-import type { RequestHandler } from "./$types";
-
-export const POST: RequestHandler = async ({ locals, request }) => {
-  const { userId } = await authorize(locals, "any");
-
-  const zodRes = nicknameChangeRequest.safeParse(await request.json());
-  if (!zodRes.success) error(400, "Invalid request body");
-  const { newNickname } = zodRes.data;
-
-  await changeNickname(userId, newNickname);
-  return text("Nickname changed", { headers: { "Content-Type": "text/plain" } });
-};

src/trpc/client.ts

@@ -0,0 +1,23 @@
+import { createTRPCClient, httpBatchLink } from "@trpc/client";
+import { browser } from "$app/environment";
+import type { AppRouter } from "./router.server";
+
+const createClient = (fetch: typeof globalThis.fetch) =>
+  createTRPCClient<AppRouter>({
+    links: [
+      httpBatchLink({
+        url: "/api/trpc",
+        fetch,
+      }),
+    ],
+  });
+
+let browserClient: ReturnType<typeof createClient>;
+
+export const useTRPC = (fetch = globalThis.fetch) => {
+  const client = browserClient ?? createClient(fetch);
+  if (browser) {
+    browserClient ??= client;
+  }
+  return client;
+};

src/trpc/init.server.ts

@@ -0,0 +1,25 @@
+import type { RequestEvent } from "@sveltejs/kit";
+import { initTRPC, TRPCError } from "@trpc/server";
+import { authorizeMiddleware, authorizeClientMiddleware } from "./middlewares/authorize";
+
+export const createContext = (event: RequestEvent) => event;
+
+export const t = initTRPC.context<Awaited<ReturnType<typeof createContext>>>().create();
+
+export const router = t.router;
+export const publicProcedure = t.procedure;
+
+const authedProcedure = publicProcedure.use(async ({ ctx, next }) => {
+  if (!ctx.locals.session) {
+    throw new TRPCError({ code: "UNAUTHORIZED" });
+  }
+  return next();
+});
+
+export const roleProcedure = {
+  any: authedProcedure.use(authorizeMiddleware("any")),
+  notClient: authedProcedure.use(authorizeMiddleware("notClient")),
+  anyClient: authedProcedure.use(authorizeClientMiddleware("anyClient")),
+  pendingClient: authedProcedure.use(authorizeClientMiddleware("pendingClient")),
+  activeClient: authedProcedure.use(authorizeClientMiddleware("activeClient")),
+};

src/trpc/middlewares/authorize.ts

@@ -0,0 +1,36 @@
+import { TRPCError } from "@trpc/server";
+import {
+  AuthorizationError,
+  authorizeInternal,
+  type ClientSession,
+  type SessionPermission,
+} from "$lib/server/modules/auth";
+import { t } from "../init.server";
+
+const authorize = async (locals: App.Locals, requiredPermission: SessionPermission) => {
+  try {
+    return await authorizeInternal(locals, requiredPermission);
+  } catch (e) {
+    if (e instanceof AuthorizationError) {
+      throw new TRPCError({
+        code: e.status === 403 ? "FORBIDDEN" : "INTERNAL_SERVER_ERROR",
+        message: e.message,
+      });
+    }
+    throw e;
+  }
+};
+
+export const authorizeMiddleware = (requiredPermission: "any" | "notClient") =>
+  t.middleware(async ({ ctx, next }) => {
+    const session = await authorize(ctx.locals, requiredPermission);
+    return next({ ctx: { session } });
+  });
+
+export const authorizeClientMiddleware = (
+  requiredPermission: "anyClient" | "pendingClient" | "activeClient",
+) =>
+  t.middleware(async ({ ctx, next }) => {
+    const session = (await authorize(ctx.locals, requiredPermission)) as ClientSession;
+    return next({ ctx: { session } });
+  });

src/trpc/router.server.ts

@@ -0,0 +1,17 @@
+import type { RequestEvent } from "@sveltejs/kit";
+import type { inferRouterInputs, inferRouterOutputs } from "@trpc/server";
+import { createContext, router } from "./init.server";
+import { clientRouter, hskRouter, mekRouter, userRouter } from "./routers";
+
+export const appRouter = router({
+  client: clientRouter,
+  hsk: hskRouter,
+  mek: mekRouter,
+  user: userRouter,
+});
+
+export const createCaller = (event: RequestEvent) => appRouter.createCaller(createContext(event));
+
+export type AppRouter = typeof appRouter;
+export type RouterInputs = inferRouterInputs<AppRouter>;
+export type RouterOutputs = inferRouterOutputs<AppRouter>;

src/trpc/routers/client.ts

@@ -0,0 +1,96 @@
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import { ClientRepo, IntegrityError } from "$lib/server/db";
+import { verifyPubKey, verifySignature, generateChallenge } from "$lib/server/modules/crypto";
+import env from "$lib/server/loadenv";
+import { router, roleProcedure } from "../init.server";
+
+const createUserClientChallenge = async (
+  ip: string,
+  userId: number,
+  clientId: number,
+  encPubKey: string,
+) => {
+  const { answer, challenge } = await generateChallenge(32, encPubKey);
+  const { id } = await ClientRepo.registerUserClientChallenge(
+    userId,
+    clientId,
+    answer.toString("base64"),
+    ip,
+    new Date(Date.now() + env.challenge.userClientExp),
+  );
+  return { id, challenge: challenge.toString("base64") };
+};
+
+const clientRouter = router({
+  register: roleProcedure["notClient"]
+    .input(
+      z.object({
+        encPubKey: z.string().base64().nonempty(),
+        sigPubKey: z.string().base64().nonempty(),
+      }),
+    )
+    .mutation(async ({ ctx, input }) => {
+      const { userId } = ctx.session;
+      const { encPubKey, sigPubKey } = input;
+      const client = await ClientRepo.getClientByPubKeys(encPubKey, sigPubKey);
+      if (client) {
+        try {
+          await ClientRepo.createUserClient(userId, client.id);
+          return await createUserClientChallenge(ctx.locals.ip, userId, client.id, encPubKey);
+        } catch (e) {
+          if (e instanceof IntegrityError && e.message === "User client already exists") {
+            throw new TRPCError({ code: "CONFLICT", message: "Client already registered" });
+          }
+          throw e;
+        }
+      } else {
+        if (encPubKey === sigPubKey) {
+          throw new TRPCError({ code: "BAD_REQUEST", message: "Same public keys" });
+        } else if (!verifyPubKey(encPubKey) || !verifyPubKey(sigPubKey)) {
+          throw new TRPCError({ code: "BAD_REQUEST", message: "Invalid public key(s)" });
+        }
+
+        try {
+          const { id: clientId } = await ClientRepo.createClient(encPubKey, sigPubKey, userId);
+          return await createUserClientChallenge(ctx.locals.ip, userId, clientId, encPubKey);
+        } catch (e) {
+          if (e instanceof IntegrityError && e.message === "Public key(s) already registered") {
+            throw new TRPCError({ code: "CONFLICT", message: "Public key(s) already used" });
+          }
+          throw e;
+        }
+      }
+    }),
+
+  verify: roleProcedure["notClient"]
+    .input(
+      z.object({
+        id: z.number().int().positive(),
+        answerSig: z.string().base64().nonempty(),
+      }),
+    )
+    .mutation(async ({ ctx, input }) => {
+      const challenge = await ClientRepo.consumeUserClientChallenge(
+        input.id,
+        ctx.session.userId,
+        ctx.locals.ip,
+      );
+      if (!challenge) {
+        throw new TRPCError({ code: "FORBIDDEN", message: "Invalid challenge answer" });
+      }
+
+      const client = await ClientRepo.getClient(challenge.clientId);
+      if (!client) {
+        throw new TRPCError({ code: "INTERNAL_SERVER_ERROR", message: "Invalid challenge answer" });
+      } else if (
+        !verifySignature(Buffer.from(challenge.answer, "base64"), input.answerSig, client.sigPubKey)
+      ) {
+        throw new TRPCError({ code: "FORBIDDEN", message: "Invalid challenge answer signature" });
+      }
+
+      await ClientRepo.setUserClientStateToPending(ctx.session.userId, client.id);
+    }),
+});
+
+export default clientRouter;

src/trpc/routers/hsk.ts

@@ -0,0 +1,41 @@
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import { HskRepo, IntegrityError } from "$lib/server/db";
+import { router, roleProcedure } from "../init.server";
+
+const hskRouter = router({
+  list: roleProcedure["activeClient"].query(async ({ ctx }) => {
+    const hsks = await HskRepo.getAllValidHsks(ctx.session.userId);
+    return hsks.map(({ version, state, mekVersion, encHsk }) => ({
+      version,
+      state,
+      mekVersion,
+      hsk: encHsk,
+    }));
+  }),
+
+  registerInitial: roleProcedure["activeClient"]
+    .input(
+      z.object({
+        mekVersion: z.number().int().positive(),
+        hsk: z.string().base64().nonempty(),
+      }),
+    )
+    .mutation(async ({ ctx, input }) => {
+      try {
+        await HskRepo.registerInitialHsk(
+          ctx.session.userId,
+          ctx.session.clientId,
+          input.mekVersion,
+          input.hsk,
+        );
+      } catch (e) {
+        if (e instanceof IntegrityError && e.message === "HSK already registered") {
+          throw new TRPCError({ code: "CONFLICT", message: "Initial HSK already registered" });
+        }
+        throw e;
+      }
+    }),
+});
+
+export default hskRouter;

src/trpc/routers/index.ts

@@ -0,0 +1,4 @@
+export { default as clientRouter } from "./client";
+export { default as hskRouter } from "./hsk";
+export { default as mekRouter } from "./mek";
+export { default as userRouter } from "./user";

src/trpc/routers/mek.ts

@@ -0,0 +1,63 @@
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import { ClientRepo, MekRepo, IntegrityError } from "$lib/server/db";
+import { verifySignature } from "$lib/server/modules/crypto";
+import { router, roleProcedure } from "../init.server";
+
+const verifyClientEncMekSig = async (
+  userId: number,
+  clientId: number,
+  version: number,
+  encMek: string,
+  encMekSig: string,
+) => {
+  const userClient = await ClientRepo.getUserClientWithDetails(userId, clientId);
+  if (!userClient) {
+    throw new TRPCError({ code: "INTERNAL_SERVER_ERROR", message: "Invalid session id" });
+  }
+
+  const data = JSON.stringify({ version, key: encMek });
+  return verifySignature(Buffer.from(data), encMekSig, userClient.sigPubKey);
+};
+
+const mekRouter = router({
+  list: roleProcedure["activeClient"].query(async ({ ctx }) => {
+    const clientMeks = await MekRepo.getAllValidClientMeks(
+      ctx.session.userId,
+      ctx.session.clientId,
+    );
+    return clientMeks.map(({ version, state, encMek, encMekSig }) => ({
+      version,
+      state,
+      mek: encMek,
+      mekSig: encMekSig,
+    }));
+  }),
+
+  registerInitial: roleProcedure["pendingClient"]
+    .input(
+      z.object({
+        mek: z.string().base64().nonempty(),
+        mekSig: z.string().base64().nonempty(),
+      }),
+    )
+    .mutation(async ({ ctx, input }) => {
+      const { userId, clientId } = ctx.session;
+      const { mek, mekSig } = input;
+      if (!(await verifyClientEncMekSig(userId, clientId, 1, mek, mekSig))) {
+        throw new TRPCError({ code: "BAD_REQUEST", message: "Invalid signature" });
+      }
+
+      try {
+        await MekRepo.registerInitialMek(userId, clientId, mek, mekSig);
+        await ClientRepo.setUserClientStateToActive(userId, clientId);
+      } catch (e) {
+        if (e instanceof IntegrityError && e.message === "MEK already registered") {
+          throw new TRPCError({ code: "CONFLICT", message: "Initial MEK already registered" });
+        }
+        throw e;
+      }
+    }),
+});
+
+export default mekRouter;

src/trpc/routers/user.ts

@@ -0,0 +1,27 @@
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import { UserRepo } from "$lib/server/db";
+import { router, roleProcedure } from "../init.server";
+
+const userRouter = router({
+  info: roleProcedure.any.query(async ({ ctx }) => {
+    const user = await UserRepo.getUser(ctx.session.userId);
+    if (!user) {
+      throw new TRPCError({ code: "INTERNAL_SERVER_ERROR", message: "Invalid session id" });
+    }
+
+    return { email: user.email, nickname: user.nickname };
+  }),
+
+  changeNickname: roleProcedure.any
+    .input(
+      z.object({
+        newNickname: z.string().trim().min(2).max(8),
+      }),
+    )
+    .mutation(async ({ ctx, input }) => {
+      await UserRepo.setUserNickname(ctx.session.userId, input.newNickname);
+    }),
+});
+
+export default userRouter;

svelte.config.js

@@ -3,15 +3,12 @@ import { vitePreprocess } from "@sveltejs/vite-plugin-svelte";
 
 /** @type {import('@sveltejs/kit').Config} */
 const config = {
-  // Consult https://svelte.dev/docs/kit/integrations
-  // for more information about preprocessors
   preprocess: vitePreprocess(),
-
   kit: {
-    // adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
-    // If your environment is not supported, or you settled on a specific environment, switch out the adapter.
-    // See https://svelte.dev/docs/kit/adapters for more information about adapters.
     adapter: adapter(),
+    alias: {
+      $trpc: "./src/trpc",
+    },
   },
 };