"use client";

import { useEffect, useState } from "react";
import { requestNotificationPermission, onForegroundMessage } from "../utils/firebase";
import AuthService from "../services/AuthService";

export default function NotificationHandler() {
  const [notification, setNotification] = useState(null);
  const [unsubscribe, setUnsubscribe] = useState(null);

  useEffect(() => {
    const user = AuthService.getUser();
    if (!user) return;

    // User is signed in — request permission and listen for messages
    requestNotificationPermission().then((token) => {
      if (token) {
        console.log("[Notifications] FCM token obtained");
      }
    });

    const unsub = onForegroundMessage((payload) => {
      const title = payload.notification?.title || payload.data?.title || "Sweet Home";
      const body = payload.notification?.body || payload.data?.body || "";
      setNotification({ title, body });
      setTimeout(() => setNotification(null), 5000);
    });

    setUnsubscribe(() => unsub);
    return () => unsub();
  }, []);

  if (!notification) return null;

  return (
    <div className="fixed bottom-4 left-4 right-4 md:left-auto md:right-4 md:w-96 bg-white rounded-xl shadow-2xl border border-gray-200 p-4 z-[9999] animate-slide-up">
      <div className="flex items-start gap-3">
        <div className="w-10 h-10 bg-amber-100 rounded-lg flex items-center justify-center flex-shrink-0">
          <span className="text-xl">🏠</span>
        </div>
        <div className="flex-1 min-w-0">
          <p className="font-bold text-gray-900 text-sm">{notification.title}</p>
          <p className="text-gray-600 text-sm mt-0.5">{notification.body}</p>
        </div>
        <button
          onClick={() => setNotification(null)}
          className="text-gray-400 hover:text-gray-600 flex-shrink-0"
        >
          ✕
        </button>
      </div>
    </div>
  );
}