"use client";

import { useState } from "react";
import { signIn } from "next-auth/react";
import { useRouter } from "next/navigation";
import { AlertCircle, Loader2 } from "lucide-react";

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

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setError("");
    setLoading(true);

    try {
      const result = await signIn("credentials", {
        email,
        password,
        redirect: false,
      });

      if (result?.error) {
        setError("Email o contraseña incorrectos");
      } else {
        router.push("/");
        router.refresh();
      }
    } catch (err) {
      setError("Error al iniciar sesión");
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50 px-4">
      <div className="max-w-md w-full bg-white rounded-lg shadow-lg p-8">
        <div className="text-center mb-8">
          <h1 className="text-3xl font-bold text-gray-900 mb-2">APR Solo</h1>
          <p className="text-gray-600">Sistema de Gestión de Agua Potable Rural</p>
        </div>

        <form onSubmit={handleSubmit} className="space-y-6">
          {error && (
            <div className="bg-red-50 border border-red-200 text-red-700 px-4 py-3 rounded-lg flex items-center gap-2">
              <AlertCircle className="w-5 h-5" />
              <span>{error}</span>
            </div>
          )}

          <div>
            <label htmlFor="email" className="block text-sm font-medium text-gray-700 mb-2">
              Email
            </label>
            <input
              id="email"
              type="email"
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              required
              className="w-full px-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent text-base"
              placeholder="tu@email.com"
              autoComplete="email"
            />
          </div>

          <div>
            <label htmlFor="password" className="block text-sm font-medium text-gray-700 mb-2">
              Contraseña
            </label>
            <input
              id="password"
              type="password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              required
              className="w-full px-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent text-base"
              placeholder="••••••••"
              autoComplete="current-password"
            />
          </div>

          <button
            type="submit"
            disabled={loading}
            className="w-full bg-blue-600 text-white py-3 px-4 rounded-lg font-medium hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2 disabled:opacity-50 disabled:cursor-not-allowed flex items-center justify-center gap-2"
          >
            {loading ? (
              <>
                <Loader2 className="w-5 h-5 animate-spin" />
                Iniciando sesión...
              </>
            ) : (
              "Iniciar Sesión"
            )}
          </button>
        </form>

        <div className="mt-6 text-center text-sm text-gray-600">
          <p>Versión PWA Mobile</p>
        </div>
      </div>
    </div>
  );
}