/**
 * What a client is shown for a shot.
 *
 * `Shot.clientCode` is the naming alias some productions supply — their own
 * code for the same shot. It already drives slates, overlay burn-ins and
 * delivered file names (RenderPipeline2 §11.2); internal paths, comp names and
 * every DB lookup stay on `shotCode`.
 *
 * The client portal is the other place the client's own naming belongs, and
 * that includes task titles: they follow the house convention
 * `UNG_102_019_010_cmp_TT_v004`, so the internal code is embedded in the
 * string the client reads and copies.
 *
 * Apply these at the API boundary rather than at each render site, so nothing
 * downstream has to remember which code it is holding.
 */

export interface ShotCodeFields {
  shotCode: string;
  clientCode?: string | null;
}

/** The shot's code as the client knows it; their alias if set, ours otherwise. */
export function clientShotCode(shot: ShotCodeFields): string {
  return shot.clientCode?.trim() || shot.shotCode;
}

/**
 * A task title with the internal shot code swapped for the client's alias.
 *
 * Titles are built from the shot code by convention, so this is a substring
 * swap rather than a rename — a title that does not contain the code (a
 * hand-edited one, say) is returned untouched rather than guessed at.
 */
export function clientTaskTitle(title: string, shot: ShotCodeFields): string {
  const alias = shot.clientCode?.trim();
  if (!alias || !title || alias === shot.shotCode) return title;
  // split/join rather than a regex: shot codes are user-supplied and would
  // otherwise need escaping.
  return title.split(shot.shotCode).join(alias);
}

/**
 * The High Res (ProRes) download name for a client. With an alias it follows
 * the slate's client naming, `{clientCode}_{version}` — no internal code and
 * no "_cmp_TT_" studio suffix; without one the file keeps its own name.
 */
export function clientHighResFilename(fileName: string, shot: ShotCodeFields | null): string {
  const alias = shot?.clientCode?.trim();
  if (!shot || !alias || alias === shot.shotCode) return fileName;
  const m = /_(v\d+)(\.[a-z0-9]+)$/i.exec(fileName);
  if (m && fileName.startsWith(shot.shotCode)) return `${alias}_${m[1]}${m[2]}`;
  return fileName.split(shot.shotCode).join(alias);
}