Implement notification history feature

Adds a notification history view accessible from the header, including a clear button and a notification count badge.

src/components/Header.tsx

@@ -1,11 +1,12 @@
 
 import React, { useState, useEffect } from 'react';
-import { Bell } from 'lucide-react';
-import { useAuth } from '@/contexts/auth';
 import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar';
 import { Skeleton } from '@/components/ui/skeleton';
+import { useAuth } from '@/contexts/auth';
 import { useIsMobile } from '@/hooks/use-mobile';
 import { isIOSPlatform } from '@/utils/platform';
+import NotificationPopover from './notification/NotificationPopover';
+import useNotifications from '@/hooks/useNotifications';
 
 const Header: React.FC = () => {
   const {
@@ -16,6 +17,7 @@ const Header: React.FC = () => {
   const [imageError, setImageError] = useState(false);
   const isMobile = useIsMobile();
   const [isIOS, setIsIOS] = useState(false);
+  const { notifications, clearAllNotifications, markAsRead } = useNotifications();
 
   // 플랫폼 감지
   useEffect(() => {
@@ -64,9 +66,13 @@ const Header: React.FC = () => {
             <p className="text-gray-500 text-left">젤리의 적자탈출</p>
           </div>
         </div>
-        <button className="neuro-flat p-2.5 rounded-full">
-          <Bell size={20} className="text-gray-600" />
-        </button>
+        <div className="neuro-flat p-2.5 rounded-full">
+          <NotificationPopover 
+            notifications={notifications}
+            onClearAll={clearAllNotifications}
+            onReadNotification={markAsRead}
+          />
+        </div>
       </div>
     </header>
   );

src/components/notification/NotificationPopover.tsx

@@ -0,0 +1,123 @@
+
+import React from 'react';
+import { BellRing, X, Check } from 'lucide-react';
+import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover';
+import { Button } from '@/components/ui/button';
+import { Badge } from '@/components/ui/badge';
+import { Separator } from '@/components/ui/separator';
+import { toast } from 'sonner';
+
+// 알림 타입 정의
+export interface Notification {
+  id: string;
+  title: string;
+  message: string;
+  timestamp: Date;
+  read: boolean;
+}
+
+interface NotificationPopoverProps {
+  notifications: Notification[];
+  onClearAll: () => void;
+  onReadNotification: (id: string) => void;
+}
+
+const NotificationPopover: React.FC<NotificationPopoverProps> = ({
+  notifications,
+  onClearAll,
+  onReadNotification
+}) => {
+  const unreadCount = notifications.filter(notification => !notification.read).length;
+  
+  const handleClearAll = () => {
+    onClearAll();
+    toast.success('모든 알림이 삭제되었습니다.');
+  };
+
+  const formatDate = (date: Date) => {
+    return new Intl.DateTimeFormat('ko-KR', {
+      month: 'short',
+      day: 'numeric',
+      hour: '2-digit',
+      minute: '2-digit'
+    }).format(date);
+  };
+
+  return (
+    <Popover>
+      <PopoverTrigger asChild>
+        <Button variant="ghost" size="icon" className="relative">
+          <BellRing size={20} className="text-gray-600" />
+          {unreadCount > 0 && (
+            <Badge 
+              className="absolute -top-1 -right-1 px-1.5 py-0.5 min-w-5 h-5 flex items-center justify-center text-xs bg-neuro-income text-white border-2 border-neuro-background"
+            >
+              {unreadCount}
+            </Badge>
+          )}
+        </Button>
+      </PopoverTrigger>
+      <PopoverContent className="w-80 p-0 neuro-flat" align="end">
+        <div className="flex items-center justify-between p-4">
+          <div className="flex items-center">
+            <BellRing size={16} className="mr-2 text-neuro-income" />
+            <h3 className="font-medium">알림</h3>
+            {unreadCount > 0 && (
+              <Badge 
+                className="ml-2 px-1.5 py-0.5 bg-neuro-income text-white"
+              >
+                {unreadCount}
+              </Badge>
+            )}
+          </div>
+          {notifications.length > 0 && (
+            <Button 
+              variant="ghost" 
+              size="sm" 
+              onClick={handleClearAll}
+              className="text-xs hover:bg-red-100 hover:text-red-600"
+            >
+              모두 삭제
+            </Button>
+          )}
+        </div>
+        
+        <Separator />
+        
+        <div className="max-h-[300px] overflow-y-auto">
+          {notifications.length === 0 ? (
+            <div className="py-6 text-center text-gray-500">
+              알림이 없습니다.
+            </div>
+          ) : (
+            notifications.map((notification) => (
+              <div key={notification.id} className={`p-4 border-b last:border-b-0 ${!notification.read ? 'bg-[#F2FCE2]' : ''}`}>
+                <div className="flex items-start justify-between">
+                  <div className="flex-1">
+                    <h4 className="text-sm font-medium">{notification.title}</h4>
+                    <p className="text-xs text-gray-600 mt-1">{notification.message}</p>
+                    <p className="text-xs text-gray-400 mt-1">{formatDate(notification.timestamp)}</p>
+                  </div>
+                  <Button
+                    variant="ghost"
+                    size="icon"
+                    className="h-6 w-6 rounded-full hover:bg-gray-200"
+                    onClick={() => onReadNotification(notification.id)}
+                  >
+                    {notification.read ? (
+                      <Check size={14} className="text-gray-400" />
+                    ) : (
+                      <X size={14} className="text-gray-400" />
+                    )}
+                  </Button>
+                </div>
+              </div>
+            ))
+          )}
+        </div>
+      </PopoverContent>
+    </Popover>
+  );
+};
+
+export default NotificationPopover;

src/hooks/useNotifications.ts

@@ -0,0 +1,71 @@
+
+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;

src/pages/Index.tsx

@@ -10,6 +10,7 @@ import { useAuth } from '@/contexts/auth';
 import { useWelcomeDialog } from '@/hooks/useWelcomeDialog';
 import { useDataInitialization } from '@/hooks/useDataInitialization';
 import { useIsMobile } from '@/hooks/use-mobile';
+import useNotifications from '@/hooks/useNotifications';
 
 // 메인 컴포넌트
 const Index = () => {
@@ -28,6 +29,7 @@ const Index = () => {
   const { showWelcome, checkWelcomeDialogState, handleCloseWelcome } = useWelcomeDialog();
   const { isInitialized } = useDataInitialization(resetBudgetData);
   const isMobile = useIsMobile();
+  const { addNotification } = useNotifications();
 
   // 초기화 후 환영 메시지 표시 상태 확인
   useEffect(() => {
@@ -37,6 +39,21 @@ const Index = () => {
     }
   }, [isInitialized, checkWelcomeDialogState]);
 
+  // 앱 시작시 예시 알림 추가 (실제 앱에서는 필요한 이벤트에 따라 알림 추가)
+  useEffect(() => {
+    if (isInitialized && user) {
+      // 사용자 로그인 시 알림 예시
+      const timeoutId = setTimeout(() => {
+        addNotification(
+          '환영합니다!', 
+          '젤리의 적자탈출에 오신 것을 환영합니다. 예산을 설정하고 지출을 기록해보세요.'
+        );
+      }, 2000);
+      
+      return () => clearTimeout(timeoutId);
+    }
+  }, [isInitialized, user, addNotification]);
+
   // 페이지가 처음 로드될 때 데이터 로딩 확인
   useEffect(() => {
     console.log('Index 페이지 마운트, 현재 데이터 상태:');