wehub-resource-sync
33 lines
1.1 KiB
TypeScript
33 lines
1.1 KiB
TypeScript
export async function sha256(blob: Blob): Promise<string> {
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const buffer = await blob.arrayBuffer();
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const hashBuffer = await crypto.subtle.digest('SHA-256', buffer);
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return [...new Uint8Array(hashBuffer)].map((b) => b.toString(16).padStart(2, '0')).join('');
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}
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/**
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* Upload a single blob to object storage and return its CDN URL.
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*
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* The content hash dedups uploads server-side, so re-uploading the same bytes
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* is cheap and returns the same URL (makes callers idempotent). Returns `null`
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* on any failure or when storage is unconfigured — callers decide the fallback.
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*/
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export async function uploadBlobToStorage(
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blob: Blob,
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type: 'media' | 'audio' | 'poster',
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signal?: AbortSignal,
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): Promise<string | null> {
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try {
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const hash = await sha256(blob);
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const formData = new FormData();
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formData.append('hash', hash);
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formData.append('type', type);
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formData.append('file', blob);
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const res = await fetch('/api/storage/upload', { method: 'POST', body: formData, signal });
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if (!res.ok) return null;
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const { url } = await res.json();
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return typeof url === 'string' ? url : null;
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} catch {
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return null;
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}
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}
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