디렉터리를 삭제하는 경우, 디렉터리 하위에 있던 파일의 캐시를 자동으로 삭제하도록 구현

src/lib/server/db/file.ts

@@ -129,14 +129,15 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
   return await db.transaction(
     async (tx) => {
       const unregisterFiles = async (parentId: number) => {
-        const files = await tx
+        return await tx
           .delete(file)
           .where(and(eq(file.userId, userId), eq(file.parentId, parentId)))
-          .returning({ path: file.path });
-        return files.map(({ path }) => path);
+          .returning({ id: file.id, path: file.path });
       };
-      const unregisterDirectoryRecursively = async (directoryId: number): Promise<string[]> => {
-        const filePaths = await unregisterFiles(directoryId);
+      const unregisterDirectoryRecursively = async (
+        directoryId: number,
+      ): Promise<{ id: number; path: string }[]> => {
+        const files = await unregisterFiles(directoryId);
         const subDirectories = await tx
           .select({ id: directory.id })
           .from(directory)
@@ -149,7 +150,7 @@ export const unregisterDirectory = async (userId: number, directoryId: number) =
         if (deleteRes.changes === 0) {
           throw new IntegrityError("Directory not found");
         }
-        return filePaths.concat(...subDirectoryFilePaths);
+        return files.concat(...subDirectoryFilePaths);
       };
       return await unregisterDirectoryRecursively(directoryId);
     },

src/lib/server/schemas/directory.ts

@@ -15,6 +15,11 @@ export const directoryInfoResponse = z.object({
 });
 export type DirectoryInfoResponse = z.infer<typeof directoryInfoResponse>;
 
+export const directoryDeleteResponse = z.object({
+  deletedFiles: z.number().int().positive().array(),
+});
+export type DirectoryDeleteResponse = z.infer<typeof directoryDeleteResponse>;
+
 export const directoryRenameRequest = z.object({
   dekVersion: z.string().datetime(),
   name: z.string().base64().nonempty(),

src/lib/server/services/directory.ts

@@ -34,8 +34,13 @@ export const getDirectoryInformation = async (userId: number, directoryId: "root
 
 export const deleteDirectory = async (userId: number, directoryId: number) => {
   try {
-    const filePaths = await unregisterDirectory(userId, directoryId);
-    filePaths.map((path) => unlink(path)); // Intended
+    const files = await unregisterDirectory(userId, directoryId);
+    return {
+      files: files.map(({ id, path }) => {
+        unlink(path); // Intended
+        return id;
+      }),
+    };
   } catch (e) {
     if (e instanceof IntegrityError && e.message === "Directory not found") {
       error(404, "Invalid directory id");