"use client";
import { useState } from "react";
import { useRouter } from "next/navigation";

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: React.FormEvent) {
    e.preventDefault();
    setLoading(true);
    setError("");
    const res = await fetch("/api/auth/login", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ email, password }),
    });
    const data = await res.json();
    setLoading(false);
    if (!res.ok) { setError(data.error); return; }
    router.push("/dashboard");
  }

  return (
    <div className="min-h-screen bg-gradient-to-br from-brand-900 via-brand-800 to-brand-700 flex items-center justify-center p-4">
      <div className="w-full max-w-md">
        <div className="bg-white rounded-2xl shadow-2xl p-8">
          <div className="text-center mb-8">
            <div className="text-3xl font-bold text-brand-900">Ekelund</div>
            <div className="text-sm text-gray-500 mt-1">Sistema de Gestión de Vacaciones</div>
          </div>

          <form onSubmit={handleSubmit} className="space-y-5">
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-1">Email</label>
              <input
                type="email"
                value={email}
                onChange={e => setEmail(e.target.value)}
                required
                className="w-full border border-gray-300 rounded-lg px-3 py-2.5 text-sm focus:outline-none focus:ring-2 focus:ring-brand-500"
                placeholder="usuario@empresa.cl"
              />
            </div>
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-1">Contraseña</label>
              <input
                type="password"
                value={password}
                onChange={e => setPassword(e.target.value)}
                required
                className="w-full border border-gray-300 rounded-lg px-3 py-2.5 text-sm focus:outline-none focus:ring-2 focus:ring-brand-500"
              />
            </div>

            {error && (
              <div className="bg-red-50 border border-red-200 text-red-700 text-sm px-3 py-2 rounded-lg">
                {error}
              </div>
            )}

            <button
              type="submit"
              disabled={loading}
              className="w-full bg-brand-600 hover:bg-brand-700 disabled:bg-brand-400 text-white font-medium py-2.5 rounded-lg transition-colors text-sm"
            >
              {loading ? "Ingresando..." : "Ingresar"}
            </button>
          </form>

          <p className="text-xs text-gray-400 text-center mt-6">
            Acceso solo para personal autorizado de Ekelund Ekelund
          </p>
        </div>
      </div>
    </div>
  );
}