chore: import upstream snapshot with attribution

apps/sim/lib/uploads/utils/embedded-image-ref.test.ts

@@ -0,0 +1,60 @@
+import { describe, expect, it } from 'vitest'
+import {
+  extractEmbeddedFileRef,
+  extractEmbeddedFileRefs,
+} from '@/lib/uploads/utils/embedded-image-ref'
+
+const KEY = 'workspace/W1/1700000000000-deadbeefdeadbeef-photo.png'
+const ENCODED = encodeURIComponent(KEY)
+
+describe('extractEmbeddedFileRef', () => {
+  it('parses serve-url embeds (encoded, raw, and s3/blob prefixed) to the workspace key', () => {
+    expect(extractEmbeddedFileRef(`/api/files/serve/${ENCODED}?context=workspace`)).toEqual({
+      key: KEY,
+    })
+    expect(extractEmbeddedFileRef(`/api/files/serve/s3/${ENCODED}`)).toEqual({ key: KEY })
+    expect(extractEmbeddedFileRef(`/api/files/serve/blob/${ENCODED}`)).toEqual({ key: KEY })
+  })
+
+  it('parses view-url and in-app-path embeds to the file id', () => {
+    expect(extractEmbeddedFileRef('/api/files/view/wf_YwDXi8eWOkTxn0sbgChlB')).toEqual({
+      fileId: 'wf_YwDXi8eWOkTxn0sbgChlB',
+    })
+    expect(extractEmbeddedFileRef('/workspace/W1/files/wf_abc')).toEqual({ fileId: 'wf_abc' })
+  })
+
+  it('returns null for external, data, and non-workspace serve urls', () => {
+    expect(extractEmbeddedFileRef('https://cdn.example.com/a.png')).toBeNull()
+    expect(extractEmbeddedFileRef('data:image/png;base64,AAAA')).toBeNull()
+    expect(extractEmbeddedFileRef('/api/files/serve/profile-pictures%2Fu1%2Favatar.png')).toBeNull()
+  })
+})
+
+describe('extractEmbeddedFileRefs', () => {
+  it('collects de-duplicated keys and ids from a document via the shared parser', () => {
+    const content = `
+      ![a](/api/files/serve/${ENCODED}?context=workspace)
+      ![b](/api/files/view/wf_abc)
+      ![c](/workspace/W1/files/4bdaf6c4-072e-464e-891d-b6af3b5fe2cc)
+      ![dup](/api/files/serve/s3/${ENCODED})
+      ![ext](https://cdn.example.com/x.png)
+      ![pub](/api/files/serve/profile-pictures%2Fu1%2Favatar.png)
+    `
+    const { keys, ids } = extractEmbeddedFileRefs(content)
+    expect(keys).toEqual([KEY])
+    expect(ids.sort()).toEqual(['4bdaf6c4-072e-464e-891d-b6af3b5fe2cc', 'wf_abc'].sort())
+  })
+
+  it('caps total references (keys + ids) at 50 combined', () => {
+    const ids = Array.from(
+      { length: 40 },
+      (_, i) => `/api/files/view/wf_${String(i).padStart(6, '0')}`
+    )
+    const keys = Array.from(
+      { length: 40 },
+      (_, i) => `/api/files/serve/${encodeURIComponent(`workspace/W1/k${i}.png`)}`
+    )
+    const { keys: k, ids: d } = extractEmbeddedFileRefs([...ids, ...keys].join(' '))
+    expect(k.length + d.length).toBe(50)
+  })
+})