'use client';

import { useState } from 'react';
import { useRouter } from 'next/navigation';
import Link from 'next/link';
import { authApi } from '@/lib/api';
import { useAuthStore } from '@/store/authStore';

export default function LoginPage() {
  const router = useRouter();
  const setUser = useAuthStore((state) => state.setUser);
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const [error, setError] = useState('');
  const [loading, setLoading] = useState(false);

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setError('');
    setLoading(true);

    try {
      const response = await authApi.login({ username: email, password });
      localStorage.setItem('access_token', response.access_token);
      
      // Redirect to dashboard
      router.push('/dashboard');
    } catch (err: any) {
      setError(err.response?.data?.detail || 'Login failed. Please try again.');
    } finally {
      setLoading(false);
    }
  };

  const handleGoogleLogin = async () => {
    try {
      const redirectUri = `${window.location.origin}/auth/callback`;
      const authUrl = await authApi.getGoogleAuthUrl(redirectUri);
      window.location.href = authUrl;
    } catch (err: any) {
      setError('Failed to initialize Google login');
    }
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50 py-12 px-4 sm:px-6 lg:px-8">
      <div className="max-w-md w-full space-y-8">
        <div>
          <h2 className="mt-6 text-center text-3xl font-extrabold text-gray-900">
            POP3 to Gmail Forwarder
          </h2>
          <p className="mt-2 text-center text-sm text-gray-600">
            Sign in to your account
          </p>
        </div>
        <form className="mt-8 space-y-6" onSubmit={handleSubmit}>
          {error && (
            <div className="rounded-md bg-red-50 p-4">
              <p className="text-sm text-red-800">{error}</p>
            </div>
          )}
          <div className="rounded-md shadow-sm -space-y-px">
            <div>
              <label htmlFor="email" className="sr-only">
                Email address
              </label>
              <input
                id="email"
                name="email"
                type="email"
                autoComplete="email"
                required
                value={email}
                onChange={(e) => setEmail(e.target.value)}
                className="appearance-none rounded-none relative block w-full px-3 py-2 border border-gray-300 placeholder-gray-500 text-gray-900 rounded-t-md focus:outline-none focus:ring-blue-500 focus:border-blue-500 focus:z-10 sm:text-sm"
                placeholder="Email address"
              />
            </div>
            <div>
              <label htmlFor="password" className="sr-only">
                Password
              </label>
              <input
                id="password"
                name="password"
                type="password"
                autoComplete="current-password"
                required
                value={password}
                onChange={(e) => setPassword(e.target.value)}
                className="appearance-none rounded-none relative block w-full px-3 py-2 border border-gray-300 placeholder-gray-500 text-gray-900 rounded-b-md focus:outline-none focus:ring-blue-500 focus:border-blue-500 focus:z-10 sm:text-sm"
                placeholder="Password"
              />
            </div>
          </div>

          <div>
            <button
              type="submit"
              disabled={loading}
              className="group relative w-full flex justify-center py-2 px-4 border border-transparent text-sm font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 disabled:opacity-50"
            >
              {loading ? 'Signing in...' : 'Sign in'}
            </button>
          </div>

          <div className="relative">
            <div className="absolute inset-0 flex items-center">
              <div className="w-full border-t border-gray-300" />
            </div>
            <div className="relative flex justify-center text-sm">
              <span className="px-2 bg-gray-50 text-gray-500">Or continue with</span>
            </div>
          </div>

          <div>
            <button
              type="button"
              onClick={handleGoogleLogin}
              className="w-full flex justify-center items-center py-2 px-4 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
            >
              <svg className="w-5 h-5 mr-2" viewBox="0 0 24 24">
                <path
                  fill="currentColor"
                  d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"
                />
                <path
                  fill="currentColor"
                  d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"
                />
                <path
                  fill="currentColor"
                  d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"
                />
                <path
                  fill="currentColor"
                  d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"
                />
              </svg>
              Sign in with Google
            </button>
          </div>

          <div className="text-center">
            <p className="text-sm text-gray-600">
              Don&apos;t have an account?{' '}
              <Link href="/register" className="font-medium text-blue-600 hover:text-blue-500">
                Sign up
              </Link>
            </p>
          </div>
        </form>
      </div>
    </div>
  );
}
