import type { TenantEvent } from '../api';
import {
  ADMIN_EVENT_INVITES_PATH,
  ADMIN_EVENT_PHOTOBOOTH_PATH,
  ADMIN_EVENT_PHOTOS_PATH,
  ADMIN_EVENT_TASKS_PATH,
  ADMIN_EVENT_VIEW_PATH,
  ADMIN_EVENT_RECAP_PATH,
  ADMIN_EVENT_BRANDING_PATH,
} from '../constants';

export type EventTabCounts = Partial<{
  photos: number;
  tasks: number;
  invites: number;
}>;

type Translator = (key: string, fallback: string) => string;

export function buildEventTabs(event: TenantEvent, translate: Translator, counts: EventTabCounts = {}) {
  if (!event.slug) {
    return [];
  }

  const formatBadge = (value?: number | null): number | undefined => {
    if (typeof value === 'number' && Number.isFinite(value)) {
      return value;
    }
    return undefined;
  };

  return [
    {
      key: 'overview',
      label: translate('eventMenu.summary', 'Übersicht'),
      href: ADMIN_EVENT_VIEW_PATH(event.slug),
    },
    {
      key: 'photos',
      label: translate('eventMenu.photos', 'Uploads'),
      href: ADMIN_EVENT_PHOTOS_PATH(event.slug),
      badge: formatBadge(counts.photos ?? event.photo_count ?? event.pending_photo_count ?? null),
    },
    {
      key: 'tasks',
      label: translate('eventMenu.tasks', 'Aufgaben'),
      href: ADMIN_EVENT_TASKS_PATH(event.slug),
      badge: formatBadge(counts.tasks ?? event.tasks_count ?? null),
    },
    {
      key: 'invites',
      label: translate('eventMenu.invites', 'Einladungen'),
      href: ADMIN_EVENT_INVITES_PATH(event.slug),
      badge: formatBadge(counts.invites ?? event.active_invites_count ?? event.total_invites_count ?? null),
    },
    {
      key: 'branding',
      label: translate('eventMenu.branding', 'Branding'),
      href: ADMIN_EVENT_BRANDING_PATH(event.slug),
    },
    {
      key: 'photobooth',
      label: translate('eventMenu.photobooth', 'Photobooth'),
      href: ADMIN_EVENT_PHOTOBOOTH_PATH(event.slug),
    },
    {
      key: 'recap',
      label: translate('eventMenu.recap', 'Nachbereitung'),
      href: ADMIN_EVENT_RECAP_PATH(event.slug),
    },
  ];
}