'use client';

import React, { useState } from 'react';
import { 
  MagnifyingGlassIcon,
  BellIcon,
  Bars3Icon,
  ChevronDownIcon
} from '@heroicons/react/24/outline';
import { cn } from '@/utils/cn';
import { useAuth } from '@/contexts/AuthContext';
import Link from 'next/link';

interface TopBarProps {
  onMenuClick: () => void;
  sidebarCollapsed: boolean;
}

export function TopBar({ onMenuClick, sidebarCollapsed }: TopBarProps) {
  const { user, logout } = useAuth();
  const [searchQuery, setSearchQuery] = useState('');
  const [showNotifications, setShowNotifications] = useState(false);
  const [showUserMenu, setShowUserMenu] = useState(false);

  const getUserInitials = (name: string) => {
    return name.split(' ').map(n => n[0]).join('').toUpperCase();
  };

  const notifications = [
    {
      id: 1,
      title: 'Tugas Baru Tersedia',
      message: 'HACCP - Hazard Analysis Critical Control Point',
      time: '5 menit yang lalu',
      isRead: false
    },
    {
      id: 2,
      title: 'Ujian Akan Dimulai',
      message: 'SLHS - Sanitasi Lingkungan Hidup Sehat dalam 30 menit',
      time: '25 menit yang lalu',
      isRead: false
    },
    {
      id: 3,
      title: 'Sertifikat Siap Diunduh',
      message: 'Sertifikat Halal - Sistem Jaminan Halal telah tersedia',
      time: '2 jam yang lalu',
      isRead: true
    }
  ];

  const unreadCount = notifications.filter(n => !n.isRead).length;

  return (
    <header className="bg-white border-b border-gray-200 h-16">
      <div className="flex items-center justify-between h-full px-4 sm:px-6 lg:px-8">
        {/* Left side */}
        <div className="flex items-center space-x-4">
          {/* Mobile menu button */}
          <button
            onClick={onMenuClick}
            className="lg:hidden rounded-md p-2 text-gray-400 hover:bg-gray-100 hover:text-gray-500"
          >
            <Bars3Icon className="h-6 w-6" />
          </button>

          {/* Search bar */}
          <div className="relative flex-1 max-w-lg">
            <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
              <MagnifyingGlassIcon className="h-5 w-5 text-gray-400" />
            </div>
            <input
              type="text"
              value={searchQuery}
              onChange={(e) => setSearchQuery(e.target.value)}
              className="block w-full pl-10 pr-3 py-2 border border-gray-300 rounded-lg leading-5 bg-white placeholder-gray-500 focus:outline-none focus:placeholder-gray-400 focus:ring-1 focus:ring-primary-500 focus:border-primary-500 sm:text-sm"
              placeholder="Cari kursus, materi, atau instruktur..."
            />
          </div>
        </div>

        {/* Right side */}
        <div className="flex items-center space-x-4">
          {/* Notifications */}
          <div className="relative">
            <button
              onClick={() => setShowNotifications(!showNotifications)}
              className="relative rounded-full p-2 text-gray-400 hover:text-gray-500 hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-primary-500"
            >
              <BellIcon className="h-6 w-6" />
              {unreadCount > 0 && (
                <span className="absolute -top-1 -right-1 h-5 w-5 rounded-full bg-red-500 flex items-center justify-center">
                  <span className="text-xs font-medium text-white">{unreadCount}</span>
                </span>
              )}
            </button>

            {/* Notifications dropdown */}
            {showNotifications && (
              <div className="absolute right-0 mt-2 w-80 bg-white rounded-lg shadow-lg ring-1 ring-black ring-opacity-5 z-50">
                <div className="p-4">
                  <h3 className="text-sm font-medium text-gray-900 mb-3">Notifikasi</h3>
                  <div className="space-y-3 max-h-64 overflow-y-auto">
                    {notifications.map((notification) => (
                      <div
                        key={notification.id}
                        className={cn(
                          'p-3 rounded-lg border cursor-pointer hover:bg-gray-50',
                          notification.isRead ? 'bg-white border-gray-200' : 'bg-blue-50 border-blue-200'
                        )}
                      >
                        <div className="flex justify-between items-start">
                          <div className="flex-1">
                            <p className="text-sm font-medium text-gray-900">
                              {notification.title}
                            </p>
                            <p className="text-sm text-gray-600 mt-1">
                              {notification.message}
                            </p>
                            <p className="text-xs text-gray-400 mt-2">
                              {notification.time}
                            </p>
                          </div>
                          {!notification.isRead && (
                            <div className="w-2 h-2 bg-blue-500 rounded-full ml-2 mt-1"></div>
                          )}
                        </div>
                      </div>
                    ))}
                  </div>
                  <div className="mt-3 pt-3 border-t border-gray-200">
                    <button className="text-sm text-primary-600 hover:text-primary-700 font-medium">
                      Lihat Semua Notifikasi
                    </button>
                  </div>
                </div>
              </div>
            )}
          </div>

          {/* User menu */}
          <div className="relative">
            <button
              onClick={() => setShowUserMenu(!showUserMenu)}
              className="flex items-center space-x-3 rounded-full p-2 text-sm hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-primary-500"
            >
              <div className="h-8 w-8 rounded-full bg-gradient-to-r from-primary-500 to-secondary-500 flex items-center justify-center">
                <span className="text-sm font-medium text-white">
                  {user ? getUserInitials(user.name) : 'U'}
                </span>
              </div>
              <div className="hidden md:block text-left">
                <p className="text-sm font-medium text-gray-700">{user?.name || 'User'}</p>
                <p className="text-xs text-gray-500 capitalize">{user?.role || 'User'}</p>
              </div>
              <ChevronDownIcon className="h-4 w-4 text-gray-400" />
            </button>

            {/* User dropdown */}
            {showUserMenu && (
              <div className="absolute right-0 mt-2 w-48 bg-white rounded-lg shadow-lg ring-1 ring-black ring-opacity-5 z-50">
                <div className="py-1">
                  <Link
                    href="/profile"
                    className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100"
                    onClick={() => setShowUserMenu(false)}
                  >
                    Profil Saya
                  </Link>
                  <Link
                    href="/settings"
                    className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100"
                    onClick={() => setShowUserMenu(false)}
                  >
                    Pengaturan
                  </Link>
                  <Link
                    href="/help"
                    className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100"
                    onClick={() => setShowUserMenu(false)}
                  >
                    Bantuan
                  </Link>
                  <div className="border-t border-gray-100">
                    <button
                      className="block w-full text-left px-4 py-2 text-sm text-gray-700 hover:bg-gray-100"
                      onClick={() => {
                        setShowUserMenu(false);
                        logout();
                      }}
                    >
                      Keluar
                    </button>
                  </div>
                </div>
              </div>
            )}
          </div>
        </div>
      </div>
    </header>
  );
}

export default TopBar;