Function fetchFileIcon

src/renderer/lib/hooks/use-project-icon.ts:8–32

(projectId: string, fileUrl: string)

const pendingFetches = new Map<string, Promise<string | null>>()

async function fetchFileIcon(projectId: string, fileUrl: string): Promise<string | null> {
  const cached = fileIconCache.get(projectId)
  if (cached) return cached

  const pending = pendingFetches.get(projectId)
  if (pending) return pending

  const promise = (async () => {
    try {
      const res = await fetch(fileUrl)
      if (!res.ok) return null
      const blob = await res.blob()
      const blobUrl = URL.createObjectURL(blob)
      fileIconCache.set(projectId, blobUrl)
      return blobUrl
    } catch {
      return null
    } finally {
      pendingFetches.delete(projectId)
    }
  })()

  pendingFetches.set(projectId, promise)
  return promise
}

/**
 * Invalidate a project's cached icon (call after upload/remove).