'use client';

/**
 * User Navigation Component
 * 
 * Displays login/register buttons when logged out
 * Displays user menu with logout when logged in
 */

import { useAuth } from '@/lib/contexts/AuthContext';
import { Button } from '@/components/ui/button';
import { useState } from 'react';
import { useRouter } from 'next/navigation';
import { AuthModal } from './AuthModal';

export function UserNav() {
  const { user, isAuthenticated, isLoading, logout } = useAuth();
  const router = useRouter();
  const [showAuthModal, setShowAuthModal] = useState(false);
  const [authMode, setAuthMode] = useState<'login' | 'register'>('login');

  const handleLogout = async () => {
    await logout();
    router.push('/');
  };

  const handleLogin = () => {
    setAuthMode('login');
    setShowAuthModal(true);
  };

  const handleRegister = () => {
    setAuthMode('register');
    setShowAuthModal(true);
  };

  if (isLoading) {
    return (
      <div className="flex items-center gap-2">
        <div className="h-9 w-20 animate-pulse bg-gray-200 rounded-md"></div>
      </div>
    );
  }

  if (isAuthenticated && user) {
    return (
      <div className="flex items-center gap-4">
        <div className="flex items-center gap-2">
          <div className="flex flex-col items-end">
            <span className="text-sm font-medium">{user.username}</span>
            <span className="text-xs text-gray-500">{user.email}</span>
          </div>
          <div className="h-9 w-9 rounded-full bg-gradient-to-br from-blue-500 to-purple-600 flex items-center justify-center text-white font-semibold">
            {user.username.charAt(0).toUpperCase()}
          </div>
        </div>
        <Button
          onClick={handleLogout}
          variant="outline"
          size="sm"
        >
          Logout
        </Button>
      </div>
    );
  }

  return (
    <>
      <div className="flex items-center gap-2">
        <Button
          onClick={handleLogin}
          variant="outline"
          size="sm"
        >
          Login
        </Button>
        <Button
          onClick={handleRegister}
          size="sm"
        >
          Sign Up
        </Button>
      </div>

      <AuthModal
        isOpen={showAuthModal}
        onClose={() => setShowAuthModal(false)}
        defaultMode={authMode}
      />
    </>
  );
}