// `archilyzer feeds backfill-metadata <slug> [--feed <url>] [--dry-run]` —
// a podcast channel's records completed from its RSS feed, offline. The work
// and its rules are controller/feedMetadataBackfill.ts; the editor runs the
// same function as the `feed-metadata` job (`POST /api/ops/feed-metadata`).
//
// One fetch of the feed and nothing else on the network. It writes
// metadata.info.json files through the history, atomically; it does not see
// the editor's queues, so not beside a download on the same channel.

import { isValidChannelSlug } from "../controller/channels";
import {
  backfillFeedMetadata,
  feedBackfillSummary,
} from "../controller/feedMetadataBackfill";

export async function main(opts: {
  slug: string;
  feedUrl?: string;
  dryRun: boolean;
  signal?: AbortSignal;
}): Promise<number> {
  if (!isValidChannelSlug(opts.slug)) {
    console.error(`feeds backfill-metadata: "${opts.slug}" is not a channel slug`);
    return 2;
  }
  try {
    const result = await backfillFeedMetadata({
      slug: opts.slug,
      ...(opts.feedUrl ? { feedUrl: opts.feedUrl } : {}),
      dryRun: opts.dryRun,
      requestedBy: "cli",
      onLog: (line) => console.log(line.replace(/\n$/, "")),
      ...(opts.signal ? { signal: opts.signal } : {}),
    });
    console.log(feedBackfillSummary(result));
    return result.failed.length > 0 || opts.signal?.aborted ? 1 : 0;
  } catch (err) {
    console.error(`feeds backfill-metadata: ${(err as Error).message}`);
    return 1;
  }
}