APP-3015: Fix link metadata type detection (#11637)

__tests__/lib/link-meta.test.ts

@@ -1,13 +1,58 @@
-import {getLikelyType, LikelyType} from '../../src/lib/link-meta/link-meta'
+import {
+  getLikelyType,
+  getLinkMeta,
+  LikelyType,
+} from '../../src/lib/link-meta/link-meta'
 
 describe('getLikelyType', () => {
-  it('correctly handles non-parsed url', async () => {
-    const output = await getLikelyType('https://example.com')
+  it('correctly handles non-parsed url', () => {
+    const output = getLikelyType('https://example.com')
     expect(output).toEqual(LikelyType.HTML)
   })
 
-  it('handles non-string urls without crashing', async () => {
-    const output = await getLikelyType('123')
+  it('handles non-string urls without crashing', () => {
+    const output = getLikelyType('123')
     expect(output).toEqual(LikelyType.Other)
   })
 })
+
+describe('getLinkMeta', () => {
+  const originalFetch = global.fetch
+
+  afterEach(() => {
+    global.fetch = originalFetch
+  })
+
+  it('fetches metadata for stream.place routes that look like files', async () => {
+    const fetchMock = jest.fn().mockResolvedValue({
+      json: () =>
+        Promise.resolve({
+          error: '',
+          description: 'AT Protocol livestreams',
+          image: 'https://stream.place/thumbnail.jpg',
+          title: 'atproto.com on stream.place',
+        }),
+    })
+    global.fetch = fetchMock
+
+    const output = await getLinkMeta('https://stream.place/atproto.com')
+
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    expect(output).toMatchObject({
+      description: 'AT Protocol livestreams',
+      image: 'https://stream.place/thumbnail.jpg',
+      likelyType: LikelyType.HTML,
+      title: 'atproto.com on stream.place',
+    })
+  })
+
+  it('skips metadata fetching for direct image URLs', async () => {
+    const fetchMock = jest.fn()
+    global.fetch = fetchMock
+
+    const output = await getLinkMeta('https://example.com/image.JPEG')
+
+    expect(fetchMock).not.toHaveBeenCalled()
+    expect(output).toMatchObject({likelyType: LikelyType.Image})
+  })
+})