core: allow user file upload

packages/hydrooj/src/handler/misc.ts

@@ -1,10 +1,14 @@
 /* eslint-disable camelcase */
-import { BadRequestError } from '../error';
+import { pick } from 'lodash';
+import { BadRequestError, ForbiddenError, ValidationError } from '../error';
 import { PRIV } from '../model/builtin';
+import storage from '../model/storage';
+import * as system from '../model/system';
 import user from '../model/user';
 import {
-    Route, Handler, Types, param,
+    Route, Handler, Types, param, post,
 } from '../service/server';
+import { sortFiles } from '../utils';
 
 class CheckInHandler extends Handler {
     async prepare() {
@@ -46,9 +50,71 @@ class SwitchLanguageHandler extends Handler {
     }
 }
 
+export class FilesHandler extends Handler {
+    @param('pjax', Types.Boolean)
+    async get(domainId: string, pjax = false) {
+        const files = sortFiles(this.user._files);
+        if (pjax) {
+            this.response.body = {
+                fragments: (await Promise.all([
+                    this.renderHTML('partials/home_files.html', { files }),
+                ])).map((i) => ({ html: i })),
+            };
+            this.response.template = '';
+        } else {
+            this.response.template = 'home_files.html';
+            this.response.body = { files };
+        }
+    }
+
+    @post('filename', Types.Name, true)
+    async postUploadFile(domainId: string, filename: string) {
+        if ((this.user._files?.length || 0) >= system.get('limit.user_files')) {
+            throw new ForbiddenError('File limit exceeded.');
+        }
+        if (!this.request.files.file) throw new ValidationError('file');
+        const size = Math.sum((this.user._files || []).map((i) => i.size));
+        if (size >= system.get('limit.user_files_size')) {
+            throw new ForbiddenError('File size limit exceeded.');
+        }
+        if (!filename) filename = this.request.files.file.name || String.random(16);
+        if (filename.includes('/') || filename.includes('..')) throw new ValidationError('filename', 'Bad filename');
+        if (this.user._files.filter((i) => i.name === filename).length) throw new BadRequestError('file exists');
+        await storage.put(`user/${this.user._id}/${filename}`, this.request.files.file.path);
+        const meta = await storage.getMeta(`user/${this.user._id}/${filename}`);
+        const payload = { name: filename, ...pick(meta, ['size', 'lastModified', 'etag']) };
+        if (!meta) throw new Error('Upload failed');
+        this.user._files.push({ _id: filename, ...payload });
+        await user.setById(this.user._id, { _files: this.user._files });
+        this.back();
+    }
+
+    @post('files', Types.Array)
+    async postDeleteFiles(domainId: string, files: string[]) {
+        await Promise.all([
+            storage.del(files.map((t) => `user/${this.user._id}/${t}`)),
+            user.setById(this.user._id, { _files: this.user._files.filter((i) => !files.includes(i.name)) }),
+        ]);
+        this.back();
+    }
+}
+
+export class FSDownloadHandler extends Handler {
+    @param('uid', Types.Int)
+    @param('filename', Types.Name)
+    @param('noDisposition', Types.Boolean)
+    async get(domainId: string, uid: number, filename: string, noDisposition = false) {
+        this.response.redirect = await storage.signDownloadLink(
+            `user/${uid}/${filename}`, noDisposition ? undefined : filename, false, 'user',
+        );
+    }
+}
+
 export async function apply() {
     Route('check_in', '/checkin', CheckInHandler, PRIV.PRIV_USER_PROFILE);
     Route('switch_language', '/language/:lang', SwitchLanguageHandler);
+    Route('home_file', '/file', FilesHandler, PRIV.PRIV_CREATE_FILE);
+    Route('fs_download', '/file/:uid/:filename', FSDownloadHandler);
 }
 
 global.Hydro.handler.misc = apply;