// ============================================
// ROBOTS.TXT - Allow AI Bots + Add Sitemap
// ============================================
function patnetpro_robots_txt( $output, $public ) {
    $sitemap_url = home_url('/sitemap.xml');
    $robots  = "User-agent: *\n";
    $robots .= "Disallow: /wp-admin/\n";
    $robots .= "Allow: /wp-admin/admin-ajax.php\n\n";
    $robots .= "# Allow AI Crawlers\n";
    $robots .= "User-agent: GPTBot\n";
    $robots .= "Allow: /\n\n";
    $robots .= "User-agent: ChatGPT-User\n";
    $robots .= "Allow: /\n\n";
    $robots .= "User-agent: PerplexityBot\n";
    $robots .= "Allow: /\n\n";
    $robots .= "User-agent: Claude-Web\n";
    $robots .= "Allow: /\n\n";
    $robots .= "User-agent: ClaudeBot\n";
    $robots .= "Allow: /\n\n";
    $robots .= "User-agent: Gemini-Web-Crawler\n";
    $robots .= "Allow: /\n\n";
    $robots .= "User-agent: Bingbot\n";
    $robots .= "Allow: /\n\n";
    $robots .= "# Sitemap\n";
    $robots .= "Sitemap: " . $sitemap_url . "\n";
    return $robots;
}
add_filter( 'robots_txt', 'patnetpro_robots_txt', 10, 2 );

// Delete physical robots.txt to allow WordPress to manage it
// Write robots.txt directly to override physical file
add_action('init', function() {
    $sitemap_url = home_url('/sitemap.xml');
    $robots_content = "User-agent: *\nDisallow: /wp-admin/\nAllow: /wp-admin/admin-ajax.php\n\n# Allow AI Crawlers\nUser-agent: GPTBot\nAllow: /\n\nUser-agent: ChatGPT-User\nAllow: /\n\nUser-agent: PerplexityBot\nAllow: /\n\nUser-agent: Claude-Web\nAllow: /\n\nUser-agent: ClaudeBot\nAllow: /\n\nUser-agent: Gemini-Web-Crawler\nAllow: /\n\nUser-agent: Bingbot\nAllow: /\n\n# Sitemap\nSitemap: " . $sitemap_url . "\n";
    $robots_file = ABSPATH . 'robots.txt';
    @file_put_contents($robots_file, $robots_content);
});

// ===== ADMIN TOOL: Write robots.txt =====
add_action('admin_menu', function() {
    add_management_page('כתוב robots.txt', 'כתוב robots.txt', 'manage_options', 'write-robots', 'patnetpro_write_robots_page');
});
function patnetpro_write_robots_page() {
    if (isset($_POST['write_robots']) && current_user_can('manage_options')) {
        check_admin_referer('write_robots_nonce');
        $sitemap_url = home_url('/sitemap.xml');
        $content = "User-agent: *\nDisallow: /wp-admin/\nAllow: /wp-admin/admin-ajax.php\n\n# Allow AI Crawlers\nUser-agent: GPTBot\nAllow: /\n\nUser-agent: ChatGPT-User\nAllow: /\n\nUser-agent: PerplexityBot\nAllow: /\n\nUser-agent: Claude-Web\nAllow: /\n\nUser-agent: ClaudeBot\nAllow: /\n\nUser-agent: Gemini-Web-Crawler\nAllow: /\n\nUser-agent: Bingbot\nAllow: /\n\n# Sitemap\nSitemap: {$sitemap_url}\n";
        $result = file_put_contents(ABSPATH . 'robots.txt', $content);
        if ($result !== false) {
            echo '<div class="notice notice-success"><p>robots.txt נכתב בהצלחה!</p></div>';
        } else {
            echo '<div class="notice notice-error"><p>שגיאה בכתיבת הקובץ.</p></div>';
        }
    }
    add_action('rest_api_init', function() {
    register_rest_route('patnetpro/v1', '/write-robots', array(
        'methods'  => 'GET',
        'callback' => function($req) {
            if (!current_user_can('manage_options')) return new WP_Error('forbidden', 'Forbidden', array('status'=>403));
            $eol = chr(10);
            $su = home_url('/sitemap.xml');
            $lines = array(
                'User-agent: *',
                'Disallow: /wp-admin/',
                'Allow: /wp-admin/admin-ajax.php',
                '',
                '# AI Crawlers',
                'User-agent: GPTBot',
                'Allow: /',
                '',
                'User-agent: ChatGPT-User',
                'Allow: /',
                '',
                'User-agent: PerplexityBot',
                'Allow: /',
                '',
                'User-agent: Claude-Web',
                'Allow: /',
                '',
                'User-agent: ClaudeBot',
                'Allow: /',
                '',
                'User-agent: Gemini-Web-Crawler',
                'Allow: /',
                '',
                'User-agent: Bingbot',
                'Allow: /',
                '',
                'Sitemap: '.$su,
                ''
            );
            $content = implode($eol, $lines);
            $r = file_put_contents(ABSPATH.'robots.txt', $content);
            return array('success'=>($r!==false), 'bytes'=>$r);
        },
        'permission_callback' => '__return_true',
    ));
})
}