onlyoffice: add jwt support

packages/onlyoffice/index.ts

@@ -1,4 +1,7 @@
-import { Context, SystemModel, UiContextBase } from 'hydrooj';
+import { sign } from 'jsonwebtoken';
+import {
+    Context, Handler, SystemModel, UiContextBase,
+} from 'hydrooj';
 
 declare module 'hydrooj' {
     interface UiContextBase {
@@ -6,6 +9,56 @@ declare module 'hydrooj' {
     }
 }
 
+class OnlyofficeJWTHandler extends Handler {
+    noCheckPermView = true;
+    notUsage = true;
+
+    async get({ url }) {
+        const path = new URL(url).pathname;
+        const payload = {
+            document: {
+                fileType: path.split('.').pop(),
+                key: Math.random().toString(36).substring(2),
+                title: decodeURIComponent(path.split('/').pop()),
+                url,
+                permissions: {
+                    comment: false,
+                    copy: true,
+                    download: true,
+                    edit: false,
+                    fillForms: false,
+                    modifyContentControl: false,
+                    modifyFilter: false,
+                    print: true,
+                    protect: false,
+                    review: false,
+                },
+            },
+            editorConfig: {
+                lang: this.user.viewLang.includes('_') ? this.user.viewLang.split('_')[0] : this.user.viewLang,
+                mode: 'view',
+                user: {
+                    group: 'Hydro',
+                    id: this.user._id.toString(),
+                    name: this.user.uname,
+                },
+                customization: {
+                    chat: false,
+                    comments: false,
+                    help: false,
+                    hideRulers: true,
+                    plugins: false,
+                },
+            },
+        };
+        const token = sign(payload, SystemModel.get('onlyoffice.jwtsecret'));
+        this.response.body = {
+            ...payload,
+            token,
+        };
+    }
+}
+
 export function apply(ctx: Context) {
     Object.defineProperty(UiContextBase, 'onlyofficeApi', {
         configurable: true,
@@ -19,4 +72,5 @@ export function apply(ctx: Context) {
             enumerable: false,
         });
     });
+    ctx.Route('onlyoffice-jwt', '/onlyoffice-jwt', OnlyofficeJWTHandler);
 }