import { api } from './request';

export interface Appointment {
  id: string;
  patient_name: string;
  doctor_name: string;
  department?: string;
  appointment_date: string;
  start_time: string;
  end_time: string;
  status: string;
  version: number;
}

export interface Doctor {
  id: string;
  name: string;
  department: string;
  title?: string;
}

export interface DoctorSchedule {
  id: string;
  doctor_id: string;
  date: string;
  start_time: string;
  end_time: string;
  max_appointments: number;
  current_appointments: number;
  available_count: number;
}

export async function listAppointments(patientId?: string, page = 1) {
  return api.get<{ data: Appointment[]; total: number }>('/health/appointments', {
    page,
    page_size: 20,
    ...(patientId && { patient_id: patientId }),
  });
}

export async function getAppointment(id: string) {
  return api.get<Appointment>(`/health/appointments/${id}`);
}

export async function createAppointment(data: {
  patient_id: string;
  doctor_id: string;
  appointment_date: string;
  start_time: string;
  end_time: string;
  notes?: string;
  appointment_type?: string;
}) {
  return api.post<Appointment>('/health/appointments', data);
}

export async function cancelAppointment(id: string, version: number) {
  return api.put(`/health/appointments/${id}/status`, {
    status: 'cancelled',
    version,
  });
}

export async function getDoctorSchedules(doctorId: string, startDate: string, endDate: string) {
  const resp = await api.get<{ data: DoctorSchedule[]; total: number }>('/health/doctor-schedules', {
    doctor_id: doctorId,
    start_date: startDate,
    end_date: endDate,
    page_size: 50,
  });
  // 计算可用号源数
  for (const s of resp.data) {
    s.available_count = s.available_count ?? (s.max_appointments - s.current_appointments);
  }
  return resp;
}

export async function listDoctors(department?: string) {
  return api.get<{ data: Doctor[]; total: number }>('/health/doctors', {
    page_size: 100,
    ...(department && { department }),
  });
}

export async function calendarView(startDate: string, endDate: string, doctorId?: string) {
  const raw = await api.get<{ date: string; schedules: DoctorSchedule[] }[]>(
    '/health/doctor-schedules/calendar',
    {
      start_date: startDate,
      end_date: endDate,
      ...(doctorId && { doctor_id: doctorId }),
    },
  );
  // 后台返回按日期分组的嵌套结构，展平为扁平数组并计算 available_count
  const flat: DoctorSchedule[] = [];
  for (const day of (raw as unknown as { date: string; schedules: DoctorSchedule[] }[])) {
    for (const s of day.schedules) {
      flat.push({
        ...s,
        date: s.date || day.date,
        available_count: s.available_count ?? (s.max_appointments - s.current_appointments),
      });
    }
  }
  return flat;
}