import { useState, useEffect } from 'react';
import { v4 as uuidv4 } from 'uuid';
import { Notification } from '@/components/notification/NotificationPopover';

export const useNotifications = () => {
  const [notifications, setNotifications] = useState<Notification[]>([]);

  // 로컬 스토리지에서 알림 불러오기
  useEffect(() => {
    try {
      const savedNotifications = localStorage.getItem('notifications');
      if (savedNotifications) {
        const parsedNotifications = JSON.parse(savedNotifications);
        // 시간 문자열을 Date 객체로 변환
        const formattedNotifications = parsedNotifications.map((notification: any) => ({
          ...notification,
          timestamp: new Date(notification.timestamp)
        }));
        setNotifications(formattedNotifications);
      }
    } catch (error) {
      console.error('알림 데이터 로드 중 오류 발생:', error);
    }
  }, []);

  // 알림 추가
  const addNotification = (title: string, message: string) => {
    const newNotification: Notification = {
      id: uuidv4(),
      title,
      message,
      timestamp: new Date(),
      read: false
    };

    setNotifications(prevNotifications => {
      const updatedNotifications = [newNotification, ...prevNotifications];
      // 로컬 스토리지 업데이트
      localStorage.setItem('notifications', JSON.stringify(updatedNotifications));
      return updatedNotifications;
    });
  };

  // 알림 읽음 표시
  const markAsRead = (id: string) => {
    setNotifications(prevNotifications => {
      const updatedNotifications = prevNotifications.map(notification => 
        notification.id === id ? { ...notification, read: true } : notification
      );
      // 로컬 스토리지 업데이트
      localStorage.setItem('notifications', JSON.stringify(updatedNotifications));
      return updatedNotifications;
    });
  };

  // 모든 알림 삭제
  const clearAllNotifications = () => {
    setNotifications([]);
    localStorage.removeItem('notifications');
  };

  return {
    notifications,
    addNotification,
    markAsRead,
    clearAllNotifications
  };
};

export default useNotifications;