'use client';

import { signIn } from 'next-auth/react';
import { useState } from 'react';

export default function SignIn() {
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState('');

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

    try {
      const result = await signIn('credentials', {
        email,
        password,
        redirect: false
      });

      if (result?.error) {
        setError('Invalid credentials');
      } else {
        window.location.href = '/';
      }
    } catch (err) {
      setError('Login failed');
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="min-h-screen bg-gradient-to-br from-slate-900 to-slate-800 flex items-center justify-center p-4">
      <div className="max-w-md w-full bg-slate-800/50 rounded-lg p-8 border border-slate-700">
        <h1 className="text-3xl font-bold text-center mb-2 bg-gradient-to-r from-blue-400 to-purple-500 bg-clip-text text-transparent">
          Fiscal Clone
        </h1>
        <p className="text-slate-400 text-center mb-8">Sign in to your account</p>

        {error && (
          <div className="bg-red-500/20 border border-red-500 text-red-400 px-4 py-3 rounded-lg mb-6">
            {error}
          </div>
        )}

        <form onSubmit={handleCredentialsLogin} className="space-y-4">
          <div>
            <label className="block text-sm font-medium text-slate-300 mb-2">
              Email
            </label>
            <input
              type="email"
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              className="w-full bg-slate-700/50 border border-slate-600 rounded-lg px-4 py-3 text-white placeholder-slate-400 focus:outline-none focus:ring-2 focus:ring-blue-500"
              placeholder="you@example.com"
              required
            />
          </div>

          <div>
            <label className="block text-sm font-medium text-slate-300 mb-2">
              Password
            </label>
            <input
              type="password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              className="w-full bg-slate-700/50 border border-slate-600 rounded-lg px-4 py-3 text-white placeholder-slate-400 focus:outline-none focus:ring-2 focus:ring-blue-500"
              placeholder="•••••••••"
              required
              minLength={8}
            />
          </div>

          <button
            type="submit"
            disabled={loading}
            className="w-full bg-gradient-to-r from-blue-500 to-purple-500 hover:from-blue-600 hover:to-purple-600 text-white font-semibold py-3 rounded-lg transition disabled:opacity-50 disabled:cursor-not-allowed"
          >
            {loading ? 'Signing in...' : 'Sign In'}
          </button>
        </form>

        <div className="mt-6">
          <div className="relative">
            <div className="absolute inset-0 flex items-center">
              <div className="w-full border-t border-slate-600"></div>
            </div>
            <div className="relative flex justify-center text-sm">
              <span className="px-2 bg-slate-800 text-slate-400">Or continue with</span>
            </div>
          </div>
        </div>

        <div className="mt-6 grid grid-cols-2 gap-4">
          <button
            onClick={() => signIn('github')}
            className="bg-slate-700 hover:bg-slate-600 text-white font-semibold py-3 rounded-lg transition flex items-center justify-center gap-2"
          >
            <svg className="w-5 h-5" fill="currentColor" viewBox="0 0 24 24">
              <path d="M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546 1.377-1.333 1.377-1.333 1.06 0 1.783.591 1.783.591.266 0 .494-.107.68-.297.107-.297.469-.936.469-1.684 0-1.251-1.006-2.261-2.261-2.261-.965 0-1.757.781-1.757 1.753 0 .286.08.526.212.743.265.265.265.265.673 0 .995-.265.323-.646.454-.646.454-.323 0-.543-.181-.699-.468-.156-.287-.234-.744-.234-1.364v-2.261c-3.37.726-4.148-1.417-4.148-1.417-.557 1.39-1.353 1.39-1.353 1.073 0 1.814.603 1.814.603.277 0 .516-.111.728-.296.212-.185.313-.61.313-1.303 0-1.258-1.018-2.274-2.274-2.274-.984 0-1.796.802-1.796 1.796 0 .29.095.536.26.758.26.26.26.669 0 .996-.266.327-.649.457-.649.457-.33 0-.556-.186-.713-.48-.157-.293-.236-.767-.236-1.404v-2.279c-3.404.741-4.242-1.447-4.242-1.447-.569 1.416-1.379 1.416-1.379 1.084 0 1.829.616 1.829.616.283 0 .523-.113.742-.301.22-.188.327-.626.327-1.323 0-1.265-1.03-2.29-2.29-2.29-1.006 0-1.831.825-1.831 1.831 0 .294.099.543.277.767.277.277.277.693 0 1.004-.27.311-.663.437-.663.437-.34 0-.571-.197-.736-.506-.165-.31-.248-.794-.248-1.447v-2.293c-3.432.748-4.338-1.48-4.338-1.48-.583 1.44-1.404 1.44-1.404 1.095 0 1.846.629 1.846.629.29 0 .537-.116.76-.308.223-.192.34-.648.34-1.35 0-1.271-1.044-2.304-2.304-2.304-1.029 0-1.867.839-1.867 1.867 0 .298.102.55.286.775.286.286.286.718 0 1.039-.278.316-.682.443-.682.443-.349 0-.597-.204-.761-.523-.165-.32-.248-.825-.248-1.491v-2.307c-3.462.756-4.432-1.514-4.432-1.514-.597 1.463-1.431 1.463-1.431 1.105 0 1.864.64 1.864.64.297 0 .55-.119.774-.313.224-.193.353-.672.353-1.377 0-1.277-1.059-2.318-2.318-2.318-1.053 0-1.904.865-1.904 1.904 0 .302.105.557.297.786.297.297.297.741 0 1.075-.284.32-.716.447-.716.447-.358 0-.622-.211-.788-.549-.167-.338-.25-.858-.25-1.536v-2.322c-3.49.764-4.525-1.549-4.525-1.549-.611 1.487-1.457 1.487-1.457 1.116 0 1.882.651 1.882.651.303 0 .562-.123.792-.319.23-.196.361-.696.361-1.405 0-1.283-1.074-2.332-2.332-2.332-1.078 0-1.94.881-1.94 1.94 0 .306.107.567.303.798.303.303.303.763 0 1.111-.29.325-.75.452-.75.452-.367 0-.646-.219-.814-.575-.168-.357-.254-.891-.254-1.582v-2.336c-3.52.772-4.617-1.585-4.617-1.585-.625 1.511-1.484 1.511-1.484 1.127 0 1.9.663 1.9.663.309 0 .574-.127.81-.326.236-.199.368-.721.368-1.432 0-1.29-1.089-2.346-2.346-2.346-1.103 0-1.976.904-1.976 1.976 0 .31.109.579.31.81.31.31.31.784 0 1.147-.298.331-.783.457-.783.457-.376 0-.67-.227-.842-.602-.172-.376-.259-.923-.259-1.628v-2.35z"/>
            </svg>
            GitHub
          </button>
          <button
            onClick={() => signIn('google')}
            className="bg-slate-700 hover:bg-slate-600 text-white font-semibold py-3 rounded-lg transition flex items-center justify-center gap-2"
          >
            <svg className="w-5 h-5" 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>
            Google
          </button>
        </div>

        <p className="mt-8 text-center text-sm text-slate-400">
          Don't have an account?{' '}
          <a href="/auth/signup" className="text-blue-400 hover:text-blue-300">
            Sign up
          </a>
        </p>
      </div>
    </div>
  );
}