frontend/src/app/login/page.tsx

"use client";

import { signIn } from "next-auth/react";
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);

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

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

    setLoading(false);

    if (result?.error) {
      setError("Invalid email or password");
    } else {
      router.push("/");
      router.refresh();
    }
  };

  const handleSocialLogin = (provider: "google" | "facebook") => {
    signIn(provider, { callbackUrl: "/" });
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gray-50 py-12 px-4 sm:px-6 lg:px-8">
      <div className="max-w-md w-full space-y-8">
        <div>
          <h2 className="mt-6 text-center text-3xl font-extrabold text-gray-900">
            Real Estate Platform
          </h2>
          <p className="mt-2 text-center text-sm text-gray-600">
            Sign in to your account
          </p>
        </div>

        {/* SSO Buttons */}
        <div className="space-y-3">
          <button
            onClick={() => handleSocialLogin("google")}
            className="w-full flex items-center justify-center gap-3 px-4 py-3 border border-gray-300 rounded-lg shadow-sm bg-white text-gray-700 hover:bg-gray-50 transition-colors"
          >
            <svg className="w-5 h-5" viewBox="0 0 24 24">
              <path
                fill="#4285F4"
                d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"
              />
              <path
                fill="#34A853"
                d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"
              />
              <path
                fill="#FBBC05"
                d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"
              />
              <path
                fill="#EA4335"
                d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"
              />
            </svg>
            Continue with Google
          </button>

          <button
            onClick={() => handleSocialLogin("facebook")}
            className="w-full flex items-center justify-center gap-3 px-4 py-3 border border-gray-300 rounded-lg shadow-sm bg-[#1877F2] text-white hover:bg-[#166FE5] transition-colors"
          >
            <svg className="w-5 h-5" fill="currentColor" viewBox="0 0 24 24">
              <path d="M24 12.073c0-6.627-5.373-12-12-12s-12 5.373-12 12c0 5.99 4.388 10.954 10.125 11.854v-8.385H7.078v-3.47h3.047V9.43c0-3.007 1.792-4.669 4.533-4.669 1.312 0 2.686.235 2.686.235v2.953H15.83c-1.491 0-1.956.925-1.956 1.874v2.25h3.328l-.532 3.47h-2.796v8.385C19.612 23.027 24 18.062 24 12.073z" />
            </svg>
            Continue with Facebook
          </button>
        </div>

        <div className="relative">
          <div className="absolute inset-0 flex items-center">
            <div className="w-full border-t border-gray-300" />
          </div>
          <div className="relative flex justify-center text-sm">
            <span className="px-2 bg-gray-50 text-gray-500">
              Or continue with email
            </span>
          </div>
        </div>

        {/* Email/Password Form */}
        <form className="space-y-6" onSubmit={handleCredentialsLogin}>
          {error && (
            <div className="bg-red-50 border border-red-200 text-red-600 px-4 py-3 rounded-lg text-sm">
              {error}
            </div>
          )}

          <div>
            <label
              htmlFor="email"
              className="block text-sm font-medium text-gray-700"
            >
              Email address
            </label>
            <input
              id="email"
              name="email"
              type="email"
              autoComplete="email"
              required
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              className="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-lg shadow-sm focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
            />
          </div>

          <div>
            <label
              htmlFor="password"
              className="block text-sm font-medium text-gray-700"
            >
              Password
            </label>
            <input
              id="password"
              name="password"
              type="password"
              autoComplete="current-password"
              required
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              className="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-lg shadow-sm focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
            />
          </div>

          <div className="flex items-center justify-between">
            <a
              href="/forgot-password"
              className="text-sm text-blue-600 hover:text-blue-500"
            >
              Forgot your password?
            </a>
          </div>

          <button
            type="submit"
            disabled={loading}
            className="w-full flex justify-center py-3 px-4 border border-transparent rounded-lg shadow-sm text-sm font-medium text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 disabled:opacity-50 disabled:cursor-not-allowed"
          >
            {loading ? "Signing in..." : "Sign in"}
          </button>
        </form>

        <p className="text-center text-sm text-gray-600">
          Don&apos;t have an account?{" "}
          <a
            href="/register"
            className="font-medium text-blue-600 hover:text-blue-500"
          >
            Sign up
          </a>
        </p>
      </div>
    </div>
  );
}