import { getDeviceId } from '../lib/device';

export interface EventData {
  id: number;
  slug: string;
  name: string;
  default_locale: string;
  created_at: string;
  updated_at: string;
  join_token?: string | null;
  type?: {
    slug: string;
    name: string;
    icon: string;
  };
}

export interface PackageData {
  id: number;
  name: string;
  max_photos: number;
}

export interface EventPackage {
  id: number;
  used_photos: number;
  expires_at: string;
  package: PackageData;
}

export interface EventStats {
  onlineGuests: number;
  tasksSolved: number;
  latestPhotoAt: string | null;
}

export async function fetchEvent(eventKey: string): Promise<EventData> {
  const res = await fetch(`/api/v1/events/${encodeURIComponent(eventKey)}`);
  if (!res.ok) throw new Error('Event fetch failed');
  return await res.json();
}

export async function fetchStats(eventKey: string): Promise<EventStats> {
  const res = await fetch(`/api/v1/events/${encodeURIComponent(eventKey)}/stats`, {
    headers: {
      'X-Device-Id': getDeviceId(),
    },
  });
  if (!res.ok) throw new Error('Stats fetch failed');
  const json = await res.json();
  return {
    onlineGuests: json.online_guests ?? json.onlineGuests ?? 0,
    tasksSolved: json.tasks_solved ?? json.tasksSolved ?? 0,
    latestPhotoAt: json.latest_photo_at ?? json.latestPhotoAt ?? null,
  };
}

export async function getEventPackage(slug: string): Promise<EventPackage | null> {
  const res = await fetch(`/api/v1/events/${encodeURIComponent(slug)}/package`);
  if (!res.ok) {
    if (res.status === 404) return null;
    throw new Error('Failed to load event package');
  }
  return await res.json();
}