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

// Which row actions apply to a completed library / shared item — gated on the stored media_kind and
// job_kind. A generic uploaded file (media_kind='file') opens in the Files viewer instead of a player,
// and has no trim and no details edit. Re-download needs a re-fetchable source, which an edit clip and an upload
// both lack (the backend 409s both). A single source for the gate the Library + Shared rows render,
// so it's unit-testable instead of buried in JSX conditionals — and the two tabs can't drift apart.

const isMediaKind = (job: DownloadJob): boolean => job.asset?.media_kind !== "file";
const hasDuration = (job: DownloadJob): boolean => (job.asset?.duration_s ?? 0) > 0;

export interface LibraryRowActions {
  play: boolean;
  /** Opens in the Files viewer: a file that is not media (its preview, or the "no preview" card). */
  view: boolean;
  edit: boolean;
  editDetails: boolean;
  redownload: boolean;
}

export function libraryRowActions(job: DownloadJob): LibraryRowActions {
  const media = isMediaKind(job);
  return {
    play: media,
    view: !media && job.can_download,
    edit: media && job.can_download && hasDuration(job),
    editDetails: media,
    redownload: !job.job_kind || job.job_kind === "download",
  };
}

export interface SharedRowActions {
  play: boolean;
  view: boolean;
  save: boolean;
  edit: boolean;
}

export function sharedRowActions(job: DownloadJob): SharedRowActions {
  const media = isMediaKind(job);
  // The owner's `can_download` gates save/play/edit on a shared item (it reflects their link ACL).
  return {
    play: media && job.can_download,
    view: !media && job.can_download,
    save: job.can_download,
    edit: media && job.can_download && hasDuration(job),
  };
}