import { useState } from 'react';
import { Button } from '../ui/button';
import { Card, CardContent } from '../ui/card';
import { Input } from '../ui/input';
import { Label } from '../ui/label';
import { requestPasswordReset } from '../../lib/auth-client';
import { ArrowLeft } from 'lucide-react';

const logo = '/logo.png';

interface Props {
  onBack: () => void;
}

export function ForgotPassword({ onBack }: Props) {
  const [email, setEmail] = useState('');
  const [sent, setSent] = useState(false);
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState('');

  async function handleSubmit(e: React.FormEvent) {
    e.preventDefault();
    setError('');
    setLoading(true);
    const res = await requestPasswordReset({
      email,
      redirectTo: `${window.location.origin}/reset-password`,
    });
    setLoading(false);
    if (res.error) {
      setError(res.error.message || 'Something went wrong');
    } else {
      setSent(true);
    }
  }

  return (
    <div className="flex h-screen items-center justify-center bg-secondary">
      <Card className="w-full max-w-sm">
        <CardContent className="p-8 space-y-6">
          <div className="flex justify-center">
            <img src={logo} alt="LabWise" className="h-12" />
          </div>

          {sent ? (
            <div className="space-y-4 text-center">
              <h2 className="font-semibold text-lg">Check your email</h2>
              <p className="text-sm text-muted-foreground">
                If an account exists for <span className="font-medium text-foreground">{email}</span>,
                we've sent a password reset link.
              </p>
              <Button variant="outline" className="w-full" onClick={onBack}>
                Back to sign in
              </Button>
            </div>
          ) : (
            <>
              <div className="space-y-1">
                <h2 className="font-semibold text-lg">Forgot password?</h2>
                <p className="text-sm text-muted-foreground">
                  Enter your email and we'll send you a reset link.
                </p>
              </div>
              <form onSubmit={handleSubmit} className="space-y-4">
                <div className="space-y-1">
                  <Label htmlFor="email">Email</Label>
                  <Input
                    id="email"
                    type="email"
                    value={email}
                    onChange={e => setEmail(e.target.value)}
                    required
                    autoComplete="email"
                  />
                </div>
                {error && <p className="text-sm text-red-600">{error}</p>}
                <Button type="submit" className="w-full" disabled={loading}>
                  {loading ? 'Sending…' : 'Send reset link'}
                </Button>
              </form>
              <button
                onClick={onBack}
                className="flex items-center gap-1 text-sm text-muted-foreground hover:text-foreground transition-colors"
              >
                <ArrowLeft className="h-3 w-3" /> Back to sign in
              </button>
            </>
          )}
        </CardContent>
      </Card>
    </div>
  );
}
