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 { signUp } from '../../lib/auth-client';

const logo = '/logo.png';

interface Props {
  onLogin: () => void;
  onVerify: () => void;
}

export function SignUpForm({ onLogin, onVerify }: Props) {
  const [name, setName] = useState('');
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const [confirm, setConfirm] = useState('');
  const [error, setError] = useState('');
  const [loading, setLoading] = useState(false);

  async function handleSubmit(e: React.FormEvent) {
    e.preventDefault();
    setError('');
    if (password.length < 8) {
      setError('Password must be at least 8 characters');
      return;
    }
    if (password !== confirm) {
      setError('Passwords do not match');
      return;
    }
    setLoading(true);
    const res = await signUp.email({
      name,
      email,
      password,
      callbackURL: window.location.origin,
    });
    setLoading(false);
    if (res.error) {
      setError(res.error.message || 'Failed to create account');
    } else {
      onVerify();
    }
  }

  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>
          <p className="text-center text-muted-foreground text-sm">
            Create your LabWise account.
          </p>

          <form onSubmit={handleSubmit} className="space-y-4">
            <div className="space-y-1">
              <Label htmlFor="name">Full name</Label>
              <Input
                id="name"
                type="text"
                value={name}
                onChange={e => setName(e.target.value)}
                required
                autoComplete="name"
              />
            </div>
            <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>
            <div className="space-y-1">
              <Label htmlFor="password">Password</Label>
              <Input
                id="password"
                type="password"
                value={password}
                onChange={e => setPassword(e.target.value)}
                required
                autoComplete="new-password"
                placeholder="Min. 8 characters"
              />
            </div>
            <div className="space-y-1">
              <Label htmlFor="confirm">Confirm password</Label>
              <Input
                id="confirm"
                type="password"
                value={confirm}
                onChange={e => setConfirm(e.target.value)}
                required
                autoComplete="new-password"
              />
            </div>
            {error && <p className="text-sm text-red-600">{error}</p>}
            <Button type="submit" className="w-full" disabled={loading}>
              {loading ? 'Creating account…' : 'Create account'}
            </Button>
          </form>

          <p className="text-center text-sm text-muted-foreground">
            Already have an account?{' '}
            <button onClick={onLogin} className="text-primary hover:underline font-medium">
              Sign in
            </button>
          </p>
        </CardContent>
      </Card>
    </div>
  );
}
