feat: tạo hook useNotification.tsx để dùng chung toàn hệ thống

frontend/src/hooks/useNotification.tsx

@@ -0,0 +1,64 @@
+import React, { createContext, useContext, useState, useCallback, useEffect } from 'react';
+import { NotificationModal } from '../components/NotificationModal';
+
+interface NotificationOptions {
+  title: string;
+  message: string;
+  type?: 'success' | 'error' | 'info';
+}
+
+const NotificationContext = createContext<((options: NotificationOptions) => void) | undefined>(undefined);
+
+export const NotificationProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
+  const [state, setState] = useState<{
+    isOpen: boolean;
+    title?: string;
+    message?: string;
+    type?: 'success' | 'error' | 'info';
+  }>({ isOpen: false });
+
+  const notify = useCallback(({ title, message, type = 'info' }: NotificationOptions) => {
+    setState({
+      isOpen: true,
+      title,
+      message,
+      type,
+    });
+  }, []);
+
+  const handleClose = useCallback(() => {
+    setState(prev => ({ ...prev, isOpen: false }));
+  }, []);
+
+  // Tự động đóng sau 3 giây nếu modal đang mở
+  useEffect(() => {
+    if (state.isOpen) {
+      const timer = setTimeout(() => {
+        handleClose();
+      }, 3000);
+
+      return () => clearTimeout(timer); // Xóa timer nếu người dùng bấm nút đóng trước 3 giây hoặc thông báo mới đè lên
+    }
+  }, [state.isOpen, handleClose]);
+
+  return (
+    <NotificationContext.Provider value={notify}>
+      {children}
+      <NotificationModal
+        isOpen={state.isOpen}
+        title={state.title}
+        message={state.message}
+        type={state.type}
+        onConfirm={handleClose}
+      />
+    </NotificationContext.Provider>
+  );
+};
+
+export const useNotification = () => {
+  const context = useContext(NotificationContext);
+  if (!context) {
+    throw new Error('useNotification must be used within a NotificationProvider');
+  }
+  return context;
+};