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import { WebBlob } from "./WebBlob";
import { isFrontend } from "./isFrontend";
/**
* This function allow to retrieve either a FileBlob or a WebBlob from a URL.
*
* From the backend:
* - support local files
* - support local folders
* - support http resources with absolute URLs
*
* From the frontend:
* - support http resources with absolute or relative URLs
*/
export async function createBlobs(
url: URL,
destPath: string,
opts?: { fetch?: typeof fetch; maxFolderDepth?: number; accessToken?: string }
): Promise<Array<{ path: string; blob: Blob }>> {
if (url.protocol === "http:" || url.protocol === "https:") {
const blob = await WebBlob.create(url, { fetch: opts?.fetch, accessToken: opts?.accessToken });
return [{ path: destPath, blob }];
}
if (isFrontend) {
throw new TypeError(`Unsupported URL protocol "${url.protocol}"`);
}
if (url.protocol === "file:") {
const { FileBlob } = await import("./FileBlob");
const { subPaths } = await import("./sub-paths");
const paths = await subPaths(url, opts?.maxFolderDepth);
if (paths.length === 1 && paths[0].relativePath === ".") {
const blob = await FileBlob.create(url);
return [{ path: destPath, blob }];
}
return Promise.all(
paths.map(async (path) => ({
path: `${destPath}/${path.relativePath}`
.replace(/\/[.]$/, "")
.replaceAll("//", "/")
.replace(/^[.]?\//, ""),
blob: await FileBlob.create(new URL(path.path)),
}))
);
}
throw new TypeError(`Unsupported URL protocol "${url.protocol}"`);
}
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