'use client';

import { useState, FormEvent } from 'react';
import { useRouter } from 'next/navigation';
import Link from 'next/link';
import api from '@/lib/api';
import { saveAuth } from '@/lib/auth';

export default function LoginPage() {
  const router = useRouter();
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const [error, setError] = useState('');
  const [loading, setLoading] = useState(false);

  async function handleSubmit(e: FormEvent) {
    e.preventDefault();
    setError('');
    setLoading(true);
    try {
      const { data } = await api.post('/auth/login', { email, password });
      saveAuth(data);
      router.push('/');
    } catch (err: any) {
      setError(err.response?.data?.message ?? 'Credenciais inválidas');
    } finally {
      setLoading(false);
    }
  }

  return (
    <div className="min-h-screen flex items-center justify-center bg-[#FAF7F2]">
      <div className="w-full max-w-sm">
        <div className="text-center mb-8">
          <span className="text-3xl font-semibold tracking-tight text-[#0E0F12]">Klavo</span>
          <p className="text-sm text-[#0E0F12]/50 mt-1">Faça login para continuar</p>
        </div>

        <form onSubmit={handleSubmit} className="bg-white rounded-2xl border border-[#EAE4D9] p-8 space-y-4">
          {error && (
            <div className="bg-red-50 text-red-700 text-sm px-4 py-3 rounded-lg">{error}</div>
          )}
          <div>
            <label className="block text-sm font-medium text-[#0E0F12] mb-1">E-mail</label>
            <input
              type="email" required
              value={email} onChange={(e) => setEmail(e.target.value)}
              className="input"
              placeholder="voce@empresa.com"
            />
          </div>
          <div>
            <label className="block text-sm font-medium text-[#0E0F12] mb-1">Senha</label>
            <input
              type="password" required
              value={password} onChange={(e) => setPassword(e.target.value)}
              className="input"
              placeholder="••••••••"
            />
          </div>
          <button type="submit" disabled={loading} className="btn-primary w-full">
            {loading ? 'Entrando...' : 'Entrar'}
          </button>
        </form>

        <p className="text-center text-sm text-[#0E0F12]/50 mt-4">
          Ainda não tem conta?{' '}
          <Link href="/register" className="text-[#B7895A] hover:text-[#9E7248] transition-colors">Cadastrar empresa</Link>
        </p>
      </div>
    </div>
  );
}