import { useState } from 'react';
import { supabase } from '@imphnen-frontend-service/service';
import { Link } from 'react-router';
import { toast } from 'sonner';

export default function ForgotPasswordPage() {
  const [email, setEmail] = useState('');
  const [isLoading, setIsLoading] = useState(false);
  const [emailSent, setEmailSent] = useState(false);

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

    if (!email) {
      toast.error('Please enter your email');
      return;
    }

    try {
      setIsLoading(true);

      const { error } = await supabase.auth.resetPasswordForEmail(email, {
        redirectTo: `${window.location.origin}/auth/reset-password`,
      });

      if (error) {
        throw error;
      }

      setEmailSent(true);
      toast.success('Password reset email sent! Check your inbox.');
    } catch (err) {
      console.error('Failed to send reset email:', err);
      toast.error((err as Error).message || 'Failed to send reset email');
    } finally {
      setIsLoading(false);
    }
  };

  if (emailSent) {
    return (
      <div className="flex justify-center items-center min-h-screen bg-gray-50 p-4">
        <div className="bg-white w-full max-w-md p-8 rounded-2xl shadow-lg border border-gray-200 text-center">
          <div className="mb-6">
            <div className="mx-auto w-16 h-16 bg-green-100 rounded-full flex items-center justify-center mb-4">
              <span className="text-3xl">✓</span>
            </div>
            <h2 className="text-3xl font-bold text-gray-900 mb-2">
              Check Your Email
            </h2>
            <p className="text-gray-600">
              We've sent a password reset link to <strong>{email}</strong>
            </p>
          </div>

          <div className="space-y-4">
            <p className="text-sm text-gray-600">
              Click the link in the email to reset your password. The link will expire in 1 hour.
            </p>

            <Link to="/auth/login">
              <button className="w-full py-3 bg-primary-600 text-white rounded-lg font-semibold hover:bg-primary-700 transition-colors">
                Back to Login
              </button>
            </Link>

            <button
              onClick={() => setEmailSent(false)}
              className="w-full py-3 text-gray-600 hover:text-gray-900 transition-colors"
            >
              Send another email
            </button>
          </div>
        </div>
      </div>
    );
  }

  return (
    <div className="flex justify-center items-center min-h-screen bg-gray-50 p-4">
      <div className="bg-white w-full max-w-md p-8 rounded-2xl shadow-lg border border-gray-200">
        <div className="text-center mb-8">
          <h2 className="text-3xl font-bold text-gray-900 mb-2">
            Forgot Password?
          </h2>
          <p className="text-gray-600">
            No worries, we'll send you reset instructions
          </p>
        </div>

        <form onSubmit={handleSubmit} className="space-y-4">
          <div>
            <label htmlFor="email" className="block text-sm font-medium text-gray-700 mb-1">
              Email Address
            </label>
            <input
              id="email"
              type="email"
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              placeholder="your@email.com"
              disabled={isLoading}
              className="w-full px-4 py-2.5 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-primary-500 focus:border-transparent disabled:bg-gray-100 disabled:cursor-not-allowed"
              required
            />
          </div>

          <button
            type="submit"
            disabled={isLoading}
            className="w-full py-3 bg-primary-600 text-white rounded-lg font-semibold hover:bg-primary-700 focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2 disabled:bg-gray-400 disabled:cursor-not-allowed transition-colors"
          >
            {isLoading ? 'Sending...' : 'Send Reset Link'}
          </button>
        </form>

        <div className="mt-6 text-center">
          <Link to="/auth/login" className="text-primary-600 hover:text-primary-700 font-semibold">
            ← Back to Login
          </Link>
        </div>
      </div>
    </div>
  );
}