export const NO_BIKE = "No bike found for this number.";
export const NOT_IN_WORKSHOP = "This bike is not in the workshop.";

export const STAGE_LABELS: Record<string, string> = {
  received: "Received",
  diagnostic: "Diagnostic",
  in_repair: "In Repair",
  quality_check: "Quality Check",
  ready: "Ready",
  billed: "Billed",
};

export function stageLabel(stage: string): string {
  return STAGE_LABELS[stage] ?? stage;
}

export type JobPick = {
  id: string;
  stage: string;
  createdAt: string;
};

/** Newest non-deleted job that is not billed. Caller already dropped deleted rows. */
export function pickWorkshopJob(jobs: JobPick[]): JobPick | null {
  const open = jobs.filter((job) => job.stage !== "billed");
  open.sort((a, b) => {
    const byTime = b.createdAt.localeCompare(a.createdAt);
    if (byTime !== 0) return byTime;
    return b.id.localeCompare(a.id);
  });
  return open[0] ?? null;
}

export type BikeStatus = {
  registration: string;
  make: string;
  model: string;
  inWorkshop: boolean;
  stageLabel: string | null;
  stageAt: string | null;
};

export type StatusResult = {
  message: string | null;
  error: string | null;
  bikes: BikeStatus[];
};