<?php
/**
 * Plugin Name: Admin Login Hide - PTI
 * Plugin URI: https://github.com/ptiwebtech/admin-login-hide-pti
 * Description: Hide or change the default WordPress login URL to enhance login security.
 * Requires at least: 5.0
 * Requires PHP: 7.2
 * Version: 1.0.3
 * Author: ptiwebtech2025
 * Author URI: https://www.ptiwebtech.com/
 * License: GPL-2.0+
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: admin-login-hide-pti
 */


if (!defined('ABSPATH')) exit;

// Admin
require_once plugin_dir_path(__FILE__) . 'includes/class-adlhpti-admin.php';

// Handle empty username or password
add_filter( 'authenticate', 'adlhpti_custom_auth_redirect', 30, 3 );
function adlhpti_custom_auth_redirect( $user, $username, $password ) {
    $is_enabled = get_option( 'adlhpti_enabled', false );
    if ( ! $is_enabled ) {
        return $user;
    }

    if ( empty( $username ) || empty( $password ) ) {
        $slug = trim( get_option( 'adlhpti_custom_login_slug', 'secure-login' ), '/' );

        $redirect_url = add_query_arg(
            [
                'login'      => 'failed',
                'reason'     => 'empty',
                '_adlhpti_nonce' => wp_create_nonce( 'adlhpti_login_notice' ),
            ],
            home_url( '/' . $slug . '/' )
        );

        wp_safe_redirect( $redirect_url );
        exit;
    }

    // Check for invalid username
    if ( ! username_exists( $username ) ) {
        $slug = trim( get_option( 'adlhpti_custom_login_slug', 'secure-login' ), '/' );

        $redirect_url = add_query_arg(
            [
                'login'      => 'failed',
                'reason'     => 'invalid_username',
                '_adlhpti_nonce' => wp_create_nonce( 'adlhpti_login_notice' ),
            ],
            home_url( '/' . $slug . '/' )
        );

        wp_safe_redirect( $redirect_url );
        exit;
    }

    return $user;
}

// Handle incorrect password
add_action( 'wp_login_failed', 'adlhpti_redirect_on_login_failed' );
function adlhpti_redirect_on_login_failed( $username ) {
    $is_enabled = get_option( 'adlhpti_enabled', false );
    if ( ! $is_enabled ) {
        return;
    }

    $slug = trim( get_option( 'adlhpti_custom_login_slug', 'secure-login' ), '/' );

    $redirect_url = add_query_arg(
        [
            'login'      => 'failed',
            'reason'     => 'wp_login_failed',
            '_adlhpti_nonce' => wp_create_nonce( 'adlhpti_login_notice' ),
        ],
        home_url( '/' . $slug . '/' )
    );

    wp_safe_redirect( $redirect_url );
    exit;
}