/**
 * The calendars, in one place.
 *
 * The Angular app kept this mapping three times - a switch in the admin page,
 * an index-into-array in the move popup (which only worked because ids 3 and 4
 * happen to sit in that order) and `calendarId === 5` checks in the API service
 * and the filter - and the copies had drifted: the move popup could not move an
 * event to Birthdays.
 *
 * Ids and slugs mirror `calendarNames` in the API's events.router.ts; the API
 * has no endpoint that lists them (docs/api-wishlist.md), so a new calendar
 * needs an entry here too.
 *
 * Class names are written out in full so Tailwind's source scan finds them.
 */

export type CalendarSlug = "public" | "members" | "choir" | "management" | "birthdays";

export interface Calendar {
  id: number;
  slug: CalendarSlug;
  label: string;
  /** Shown by default in the admin list. Birthdays would flood it. */
  defaultVisible: boolean;
  /**
   * A recurrence every event in this calendar gets, whatever the form says.
   * Replaces the old `calendarId === 5` special case in api.service.ts.
   */
  forcedRepeatFrequency?: string;
  dotClass: string;
  badgeClass: string;
}

export const CALENDARS: readonly Calendar[] = [
  {
    id: 1,
    slug: "public",
    label: "Öffentlich",
    defaultVisible: true,
    dotClass: "bg-sky-500",
    badgeClass: "bg-sky-50 text-sky-800 ring-sky-200",
  },
  {
    id: 2,
    slug: "members",
    label: "Mitglieder",
    defaultVisible: true,
    dotClass: "bg-emerald-500",
    badgeClass: "bg-emerald-50 text-emerald-800 ring-emerald-200",
  },
  {
    id: 4,
    slug: "choir",
    label: "Chor",
    defaultVisible: true,
    dotClass: "bg-violet-500",
    badgeClass: "bg-violet-50 text-violet-800 ring-violet-200",
  },
  {
    id: 3,
    slug: "management",
    label: "Management",
    defaultVisible: true,
    dotClass: "bg-amber-500",
    badgeClass: "bg-amber-50 text-amber-900 ring-amber-200",
  },
  {
    id: 5,
    slug: "birthdays",
    label: "Geburtstage",
    defaultVisible: false,
    forcedRepeatFrequency: "YEARLY",
    dotClass: "bg-rose-500",
    badgeClass: "bg-rose-50 text-rose-800 ring-rose-200",
  },
];

export const calendarById = (id: number): Calendar | undefined => CALENDARS.find((c) => c.id === id);

export const calendarBySlug = (slug: string): Calendar | undefined => CALENDARS.find((c) => c.slug === slug);

export const DEFAULT_VISIBLE_CALENDAR_IDS: readonly number[] = CALENDARS.filter((c) => c.defaultVisible).map((c) => c.id);