VIDSOL-134 add route to handle assetlinks request

Author: manolovn

backend/.well-known/assetlinks.json

@@ -0,0 +1,27 @@
+import { Request, Response, Router } from 'express';
+
+const assetLinksRouter = Router();
+
+/**
+ * tl:dr: Serve the static file needed for mobile deep linking
+ * more info: https://developer.android.com/training/app-links/verify-android-applinks#publish-json
+ */
+assetLinksRouter.get('/assetlinks.json', (_req: Request, res: Response) => {
+  res.json([
+    {
+      // Grants the target permission to handle all URLs that the source can handle
+      relation: ['delegate_permission/common.handle_all_urls'],
+      target: {
+        namespace: 'android_app',
+        // Package name for the Android app
+        package_name: 'com.vonage.android',
+        // SHA-256 certificate fingerprints for the Android app
+        sha256_cert_fingerprints: [
+          'A4:26:72:80:DA:75:99:75:ED:D2:32:ED:0A:DC:2C:7C:27:78:6A:8C:9A:37:22:41:23:CF:9E:DB:03:78:FC:6C',
+        ],
+      },
+    },
+  ]);
+});
+
+export default assetLinksRouter;

backend/routes/assetlinks.ts

@@ -2,11 +2,13 @@ import { Router } from 'express';
 import healthRoute from './health';
 import sessionRouter from './session';
 import feedbackRouter from './feedback';
+import assetLinksRouter from './assetlinks';
 
 const router = Router();
 
 router.use('/_', healthRoute);
 router.use('/session', sessionRouter);
 router.use('/feedback', feedbackRouter);
+router.use('/.well-known', assetLinksRouter);
 
 export default router;

backend/routes/index.ts

@@ -27,14 +27,6 @@ app.use((_req, res, next) => {
 
 app.use(express.static(path.join(dirName, './dist')));
 
-/**
- * tl:dr: Serve the static file needed for mobile deep linking
- * more info: https://developer.android.com/training/app-links/verify-android-applinks#publish-json
- */
-app.get('/.well-known/assetlinks.json', (_req: Request, res: Response) => {
-  res.sendFile(path.join(dirName, '.well-known', 'assetlinks.json'));
-});
-
 app.get('/*', (_req: Request, res: Response) => {
   res.sendFile(path.join(dirName, 'dist', 'index.html'));
 });

backend/server.ts

@@ -23,17 +23,30 @@ describe('GET /.well-known/assetlinks.json', () => {
 
   it('returns the correct Content-Type header', async () => {
     const res = await request(server).get('/.well-known/assetlinks.json');
-    expect(res.headers['content-type']).toEqual('application/json; charset=UTF-8');
+    expect(res.headers['content-type']).toEqual('application/json; charset=utf-8');
   });
 
   it('returns valid JSON content', async () => {
     const res = await request(server).get('/.well-known/assetlinks.json');
     expect(() => JSON.parse(res.text)).not.toThrow();
   });
 
-  it('returns the same content as the static assetlinks.json file', async () => {
+  it('returns the correct structure for asset links', async () => {
     const res = await request(server).get('/.well-known/assetlinks.json');
-    const expectedContent = (await import('../.well-known/assetlinks.json')).default;
-    expect(JSON.parse(res.text)).toEqual(expectedContent);
+    const json = JSON.parse(res.text);
+    expect(json).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          relation: expect.arrayContaining(['delegate_permission/common.handle_all_urls']),
+          target: expect.objectContaining({
+            namespace: 'android_app',
+            package_name: 'com.vonage.android',
+            sha256_cert_fingerprints: expect.arrayContaining([
+              'A4:26:72:80:DA:75:99:75:ED:D2:32:ED:0A:DC:2C:7C:27:78:6A:8C:9A:37:22:41:23:CF:9E:DB:03:78:FC:6C',
+            ]),
+          }),
+        }),
+      ])
+    );
   });
 });