import axios from 'axios';
import apiClient from '@/lib/api/axios-instance';
import { createHeaders } from '@/lib/api';
import { API_BASE_URL } from '../config';
import {
  MeetingRoom,
  MeetingRoomCreateRequest,
  MeetingRoomUpdateRequest,
  RoomBooking,
  RoomBookingCreateRequest,
  RoomBookingUpdateRequest,
  ResponseData
} from '../types';

const BASE_URL = `${API_BASE_URL}/api`;

// Meeting Room APIs
export const getMeetingRooms = async (): Promise<MeetingRoom[]> => {
  const response = await apiClient.get(`${BASE_URL}/MeetingRoom`);
  return response.data;
};

export const getMeetingRoomById = async (id: number): Promise<MeetingRoom> => {
  const response = await apiClient.get(`${BASE_URL}/MeetingRoom/${id}`);
  return response.data;
};

export const createMeetingRoom = async (room: MeetingRoomCreateRequest): Promise<MeetingRoom> => {
  const response = await apiClient.post(`${BASE_URL}/MeetingRoom`, room);
  return response.data;
};

export const updateMeetingRoom = async (room: MeetingRoomUpdateRequest): Promise<MeetingRoom> => {
  const response = await apiClient.put(`${BASE_URL}/MeetingRoom/${room.id}`, room);
  return response.data;
};

export const deleteMeetingRoom = async (id: number): Promise<boolean> => {
  const response = await apiClient.delete(`${BASE_URL}/MeetingRoom/${id}`);
  return response.status === 200;
};

// Room Booking APIs
export const getRoomBookings = async (): Promise<RoomBooking[]> => {
  const response = await apiClient.get(`${BASE_URL}/RoomBooking`);
  return response.data;
};

export const getRoomBookingById = async (id: number): Promise<RoomBooking> => {
  const response = await apiClient.get(`${BASE_URL}/RoomBooking/${id}`);
  return response.data;
};

export const createRoomBooking = async (booking: RoomBookingCreateRequest): Promise<RoomBooking> => {
  const response = await apiClient.post(`${BASE_URL}/RoomBooking`, booking);
  return response.data;
};

export const updateRoomBooking = async (booking: RoomBookingUpdateRequest): Promise<RoomBooking> => {
  const response = await apiClient.put(`${BASE_URL}/RoomBooking/${booking.id}`, booking);
  return response.data;
};

export const deleteRoomBooking = async (id: number): Promise<boolean> => {
  const response = await apiClient.delete(`${BASE_URL}/RoomBooking/${id}`);
  return response.status === 200;
};

// Additional helper functions
export const getRoomBookingsByRoomId = async (roomId: number): Promise<RoomBooking[]> => {
  const bookings = await getRoomBookings();
  return bookings.filter(booking => booking.roomId === roomId);
};

export const getRoomBookingsByEmployeeId = async (employeeId: number): Promise<RoomBooking[]> => {
  const bookings = await getRoomBookings();
  return bookings.filter(booking => booking.employeeId === employeeId);
};

export const checkRoomAvailability = async (
  roomId: number, 
  startTime: string, 
  endTime: string, 
  excludeBookingId?: number
): Promise<boolean> => {
  const bookings = await getRoomBookingsByRoomId(roomId);
  
  // Convert input times to Date objects
  const start = new Date(startTime);
  const end = new Date(endTime);
  
  // Check if the requested time slot overlaps with any existing booking
  return !bookings.some(booking => {
    // Skip the current booking if we're checking for an update
    if (excludeBookingId && booking.id === excludeBookingId) {
      return false;
    }
    
    const bookingStart = new Date(booking.startTime);
    const bookingEnd = new Date(booking.endTime);
    
    // Check for overlap: 
    // If the new start time is before the existing end time
    // AND the new end time is after the existing start time
    return start < bookingEnd && end > bookingStart;
  });
};