import React, { useState } from 'react';
import { useNavigate, Link } from 'react-router-dom';
import { useAuth } from '../context/AuthContext';
import { Logo } from '../components/Logo';

export const Register: React.FC = () => {
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const [name, setName] = useState('');
  const [error, setError] = useState('');
  const [loading, setLoading] = useState(false);
  const { register } = useAuth();
  const navigate = useNavigate();

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

    if (password.length < 8) {
      setError('Password must be at least 8 characters long');
      return;
    }

    setLoading(true);

    try {
      await register(email, password, name);
      navigate('/');
    } catch (err: unknown) {
      const message = err instanceof Error ? err.message : 'Failed to register';
      setError(message);
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50 dark:bg-gray-900 px-4">
      <div className="max-w-md w-full space-y-8">
        <div className="text-center">
          <Logo className="mx-auto h-12 w-auto" />
          <h2 className="mt-6 text-3xl font-extrabold text-gray-900 dark:text-white">
            Create your account
          </h2>
          <p className="mt-2 text-sm text-gray-600 dark:text-gray-400">
            Or{' '}
            <Link
              to="/login"
              className="font-medium text-blue-600 hover:text-blue-500 dark:text-blue-400"
            >
              sign in to your existing account
            </Link>
          </p>
        </div>
        <form className="mt-8 space-y-6" onSubmit={handleSubmit}>
          {error && (
            <div className="rounded-md bg-red-50 dark:bg-red-900/20 p-4">
              <div className="text-sm text-red-800 dark:text-red-200">{error}</div>
            </div>
          )}
          <div className="rounded-md shadow-sm space-y-4">
            <div>
              <label htmlFor="name" className="sr-only">
                Name
              </label>
              <input
                id="name"
                name="name"
                type="text"
                autoComplete="name"
                required
                className="appearance-none relative block w-full px-3 py-2 border border-gray-300 dark:border-gray-700 placeholder-gray-500 dark:placeholder-gray-400 text-gray-900 dark:text-white dark:bg-gray-800 rounded-md focus:outline-none focus:ring-blue-500 focus:border-blue-500 focus:z-10 sm:text-sm"
                placeholder="Your name"
                value={name}
                onChange={(e) => setName(e.target.value)}
              />
            </div>
            <div>
              <label htmlFor="email" className="sr-only">
                Email address
              </label>
              <input
                id="email"
                name="email"
                type="email"
                autoComplete="email"
                required
                className="appearance-none relative block w-full px-3 py-2 border border-gray-300 dark:border-gray-700 placeholder-gray-500 dark:placeholder-gray-400 text-gray-900 dark:text-white dark:bg-gray-800 rounded-md focus:outline-none focus:ring-blue-500 focus:border-blue-500 focus:z-10 sm:text-sm"
                placeholder="Email address"
                value={email}
                onChange={(e) => setEmail(e.target.value)}
              />
            </div>
            <div>
              <label htmlFor="password" className="sr-only">
                Password
              </label>
              <input
                id="password"
                name="password"
                type="password"
                autoComplete="new-password"
                required
                minLength={8}
                className="appearance-none relative block w-full px-3 py-2 border border-gray-300 dark:border-gray-700 placeholder-gray-500 dark:placeholder-gray-400 text-gray-900 dark:text-white dark:bg-gray-800 rounded-md focus:outline-none focus:ring-blue-500 focus:border-blue-500 focus:z-10 sm:text-sm"
                placeholder="Password (min 8 characters)"
                value={password}
                onChange={(e) => setPassword(e.target.value)}
              />
            </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 disabled:cursor-not-allowed"
            >
              {loading ? 'Creating account...' : 'Create account'}
            </button>
          </div>
        </form>
      </div>
    </div>
  );
};