// Mirrors the Payload backend's own src/lib/tracking.ts — same carrier
// set/labels/URL patterns, kept in sync by hand (two separate
// deployments, no shared package). Used to render a clickable tracking
// link on /konto/bestellungen/[orderNumber]; the backend's copy builds
// the same link for the order-shipped email.
export const CARRIER_LABELS: Record<string, string> = {
  dhl: "DHL",
  dpd: "DPD",
  hermes: "Hermes",
  ups: "UPS",
  gls: "GLS",
  other: "Sonstiger Versanddienstleister",
};

const CARRIER_TRACKING_URL: Record<string, (trackingNumber: string) => string> = {
  dhl: (n) => `https://www.dhl.de/de/privatkunden/dhl-sendungsverfolgung.html?piececode=${encodeURIComponent(n)}`,
  dpd: (n) => `https://tracking.dpd.de/status/de_DE/parcel/${encodeURIComponent(n)}`,
  hermes: (n) => `https://www.myhermes.de/empfangen/sendungsverfolgung/sendungsinformation/#${encodeURIComponent(n)}`,
  ups: (n) => `https://www.ups.com/track?loc=de_DE&tracknum=${encodeURIComponent(n)}`,
  gls: (n) => `https://www.gls-pakete.de/sendungsverfolgung?trackingNumber=${encodeURIComponent(n)}`,
};

export function buildTrackingUrl(carrier: string | null | undefined, trackingNumber: string | null | undefined): string | null {
  if (!carrier || !trackingNumber) return null;
  return CARRIER_TRACKING_URL[carrier]?.(trackingNumber) ?? null;
}