import React from 'react';
import { login } from '../api';
import { useNavigate } from 'react-router-dom';
import { Input } from '@/components/ui/input';
import { Button } from '@/components/ui/button';
import AppearanceToggleDropdown from '@/components/appearance-dropdown';

export default function LoginPage() {
  const nav = useNavigate();
  const [email, setEmail] = React.useState('');
  const [password, setPassword] = React.useState('');
  const [error, setError] = React.useState<string | null>(null);
  const [loading, setLoading] = React.useState(false);

  async function submit(e: React.FormEvent) {
    e.preventDefault();
    setError(null);
    setLoading(true);
    try {
      const { token } = await login(email, password);
      localStorage.setItem('ta_token', token);
      nav('/admin', { replace: true });
    } catch (err: any) {
      setError('Login fehlgeschlagen');
    } finally { setLoading(false); }
  }

  return (
    <div className="mx-auto max-w-sm p-6">
      <div className="mb-4 flex items-center justify-between">
        <h1 className="text-lg font-semibold">Tenant Admin</h1>
        <AppearanceToggleDropdown />
      </div>
      <form onSubmit={submit} className="space-y-3">
        {error && <div className="rounded border border-red-300 bg-red-50 p-2 text-sm text-red-700">{error}</div>}
        <Input placeholder="E-Mail" type="email" value={email} onChange={(e) => setEmail(e.target.value)} />
        <Input placeholder="Passwort" type="password" value={password} onChange={(e) => setPassword(e.target.value)} />
        <Button type="submit" disabled={loading || !email || !password} className="w-full">{loading ? 'Bitte warten…' : 'Anmelden'}</Button>
      </form>
    </div>
  );
}