import { api, PaginatedResult } from "@/lib/api";

export interface TimeSlotApi {
  id: string;
  date: string;
  start_time: string;
  end_time: string;
  is_blocked: boolean;
  is_booked: boolean;
}

export interface BookingApi {
  id: string;
  user_id: string | null;
  slot_id: string;
  slot_date: string;
  slot_start: string;
  slot_end: string;
  service_note: string | null;
  client_name: string | null;
  client_email: string | null;
  client_phone: string | null;
  status: "pending" | "confirmed" | "cancelled" | "completed" | "no_show";
  amount_paid: number | null;
  stripe_payment_intent_id: string | null;
  admin_notes: string | null;
  created_at: string;
}

export interface CreateBookingPayload {
  slot_id: string;
  service_note?: string;
  guest_name?: string;
  guest_email?: string;
  guest_phone?: string;
}

export interface BookingResult {
  booking_id: string;
}

export async function getAvailableSlots(
  from_date: string,
  to_date: string
): Promise<TimeSlotApi[]> {
  return api.get<TimeSlotApi[]>(
    `/bookings/slots?from_date=${from_date}&to_date=${to_date}`
  );
}

export async function createBooking(payload: CreateBookingPayload): Promise<BookingResult> {
  return api.post<BookingResult>("/bookings", payload);
}

export async function listMyBookings(): Promise<PaginatedResult<BookingApi>> {
  return api.get<PaginatedResult<BookingApi>>("/bookings");
}

export async function cancelBooking(id: string): Promise<void> {
  await api.del(`/bookings/${id}`);
}

// ── Admin — Schedule ──────────────────────────────────────────────────────────

export interface WeeklySchedule {
  id: string;
  day_of_week: number; // 0=Monday, 6=Sunday
  start_time: string;
  end_time: string;
  slot_duration_minutes: number;
  is_active: boolean;
}

export interface BlockedDate {
  id: string;
  date: string;
  reason: string | null;
}

export async function adminGetSchedule(): Promise<WeeklySchedule[]> {
  return api.get<WeeklySchedule[]>("/admin/schedule");
}

export async function adminCreateSchedule(payload: {
  day_of_week: number;
  start_time: string;
  end_time: string;
  slot_duration_minutes: number;
}): Promise<WeeklySchedule> {
  return api.post<WeeklySchedule>("/admin/schedule", payload);
}

export async function adminDeleteSchedule(id: string): Promise<void> {
  await api.del(`/admin/schedule/${id}`);
}

export async function adminListSlots(from_date: string, to_date: string): Promise<TimeSlotApi[]> {
  return api.get<TimeSlotApi[]>(`/admin/slots?from_date=${from_date}&to_date=${to_date}`);
}

export async function adminGenerateSlots(from_date: string, to_date: string): Promise<{ created: number }> {
  return api.post<{ created: number }>("/admin/slots/generate", { from_date, to_date });
}

export async function adminUpdateSlot(id: string, is_blocked: boolean, block_reason?: string): Promise<TimeSlotApi> {
  return api.patch<TimeSlotApi>(`/admin/slots/${id}`, { is_blocked, block_reason });
}

export async function adminDeleteSlot(id: string): Promise<void> {
  await api.del(`/admin/slots/${id}`);
}

export async function adminGetBlockedDates(): Promise<BlockedDate[]> {
  return api.get<BlockedDate[]>("/admin/blocked-dates");
}

export async function adminAddBlockedDate(date: string, reason?: string): Promise<BlockedDate> {
  return api.post<BlockedDate>("/admin/blocked-dates", { date, reason });
}

export async function adminRemoveBlockedDate(id: string): Promise<void> {
  await api.del(`/admin/blocked-dates/${id}`);
}

// ── Admin — Bookings ──────────────────────────────────────────────────────────

export async function adminListBookings(
  status?: string
): Promise<PaginatedResult<BookingApi>> {
  const qs = status ? `?status=${status}&per_page=100` : "?per_page=100";
  return api.get<PaginatedResult<BookingApi>>(`/admin/bookings${qs}`);
}

export async function adminUpdateBookingStatus(
  id: string,
  status: string
): Promise<BookingApi> {
  return api.patch<BookingApi>(`/admin/bookings/${id}`, { status });
}

export async function adminDeleteBooking(id: string): Promise<void> {
  await api.del(`/admin/bookings/${id}`);
}