import type { DownloadJob } from "./api";

// The i18n keys that explain a failed download, most specific first — the list form `t()` takes, so
// the first key a locale has wins. A failure-catalog entry (`error_detail`, e.g. `facebook.login_wall`)
// names what went wrong on that site and what to do; the category (`error_code`) is the generic
// sentence, and the fallback when an older client meets a detail it has no copy for; a category it has
// no copy for falls back to the unknown one, so the row never prints a key. One helper for the queue
// row's headline and the failure window, so the two can never explain the same job differently.
export function failCopyKeys(
  job: Pick<DownloadJob, "error_code" | "error_detail">,
  part: "short" | "body",
): string[] {
  const category = (code: string) => `downloads.errors.fail.cat.${code}.${part}`;
  const code = job.error_code || "unknown";
  return [
    ...(job.error_detail ? [`downloads.errors.fail.catalog.${job.error_detail}.${part}`] : []),
    category(code),
    ...(code === "unknown" ? [] : [category("unknown")]),
  ];
}