<?php
// Add custom Theme Functions here

// =======================
// 1. Di chuyển archive description WooCommerce
// =======================
add_action('woocommerce_archive_description', 'custom_archive_description', 2 );
function custom_archive_description(){
    if( is_product_category() ) :
        remove_action('woocommerce_archive_description', 'woocommerce_taxonomy_archive_description', 10 );
        add_action( 'woocommerce_after_main_content', 'woocommerce_taxonomy_archive_description', 5 );
    endif;
}

// =======================
// 3. Đổi slug post type featured_item
// =======================
function change_slug_of_post_type_portfolio() {
    $args = get_post_type_object("featured_item");
    if ( $args && isset( $args->rewrite ) && is_array( $args->rewrite ) ) {
        $args->rewrite["slug"] = "phao-khung-tranh";
        register_post_type($args->name, (array) $args);
    }
}
add_action('init', 'change_slug_of_post_type_portfolio', 20);

// =======================
// 4. Tối giản field checkout WooCommerce
// =======================
add_filter( 'woocommerce_checkout_fields' , 'custom_fields_woocommerce' );
function custom_fields_woocommerce( $fields ) {
    unset( $fields['billing']['billing_last_name'] );
    unset( $fields['billing']['billing_country'] );
    unset( $fields['billing']['billing_postcode'] );
    unset( $fields['billing']['billing_city'] );
    unset( $fields['billing']['billing_company'] );
    unset( $fields['billing']['billing_email'] );
    return $fields;
}

// =======================
// 6. Vô hiệu hoá WooCommerce blocks (JS/CSS) trên frontend
// =======================
function disable_woocommerce_blocks() {
    wp_dequeue_style('wc-blocks-style');
    wp_deregister_style('wc-blocks-style');

    wp_dequeue_script('wc-blocks');
    wp_deregister_script('wc-blocks');
}
add_action('wp_enqueue_scripts', 'disable_woocommerce_blocks', 99);

// =======================
// 7. Vô hiệu hoá script Stripe ngoài trang thanh toán/giỏ hàng
// =======================
function disable_stripe_scripts() {
    if ( ! is_checkout() && ! is_cart() ) {
        wp_dequeue_script('stripe');
        wp_deregister_script('stripe');

        wp_dequeue_script('woocommerce_stripe');
        wp_deregister_script('woocommerce_stripe');
    }
}
add_action('wp_enqueue_scripts', 'disable_stripe_scripts', 99);

// =======================
// 8. Bỏ DNS prefetch s.w.org
// =======================
function remove_dns_prefetch_s_w_org($hints, $relation_type) {
    if ('dns-prefetch' === $relation_type) {
        $key = array_search('https://s.w.org', $hints, true);
        if (false !== $key) {
            unset($hints[$key]);
        }
    }
    return $hints;
}
add_filter('wp_resource_hints', 'remove_dns_prefetch_s_w_org', 10, 2);

// =======================
// 9. Bỏ jquery-migrate trên frontend
// =======================
function remove_jquery_migrate( $scripts ) {
    if ( ! is_admin() && isset( $scripts->registered['jquery'] ) ) {
        $script = $scripts->registered['jquery'];
        if ( $script->deps ) {
            $script->deps = array_diff( $script->deps, array( 'jquery-migrate' ) );
        }
    }
}
add_action( 'wp_default_scripts', 'remove_jquery_migrate' );

// =======================
// 10. Loại bớt meta/head, RSS, emoji, embed...
// =======================

// Remove WordPress meta generator tag
remove_action('wp_head', 'wp_generator');

// Remove WooCommerce meta generator tag
add_action('wp_loaded', 'remove_woocommerce_generator_tag');
function remove_woocommerce_generator_tag() {
    if ( isset( $GLOBALS['woocommerce'] ) ) {
        remove_action('wp_head', array($GLOBALS['woocommerce'], 'generator'));
    }
}
remove_action('wp_head', 'wc_generator_tag');

// Remove emoji styles and scripts
remove_action('wp_head', 'print_emoji_detection_script', 7);
remove_action('wp_print_styles', 'print_emoji_styles');
remove_action('admin_print_scripts', 'print_emoji_detection_script');
remove_action('admin_print_styles', 'print_emoji_styles');

// Filter to remove TinyMCE emojis
add_filter('tiny_mce_plugins', 'disable_emojis_tinymce');
function disable_emojis_tinymce($plugins) {
    if (is_array($plugins)) {
        return array_diff($plugins, array('wpemoji'));
    }
    return array();
}

// Prevent DNS prefetching for emojis
add_filter('emoji_svg_url', '__return_false');

// Disable wp-embed script
function disable_wp_embed() {
    wp_deregister_script('wp-embed');
}
add_action('wp_footer', 'disable_wp_embed');

// Remove RSS feed links from head
remove_action('wp_head', 'feed_links', 2);
remove_action('wp_head', 'feed_links_extra', 3);

// Disable all RSS/Atom feeds
function disable_feeds() {
    wp_die(__('No feed available. Please visit our <a href="'. get_bloginfo('url') .'">homepage</a>!'));
}
add_action('do_feed', 'disable_feeds', 1);
add_action('do_feed_rdf', 'disable_feeds', 1);
add_action('do_feed_rss', 'disable_feeds', 1);
add_action('do_feed_rss2', 'disable_feeds', 1);
add_action('do_feed_atom', 'disable_feeds', 1);
add_action('do_feed_rss2_comments', 'disable_feeds', 1);
add_action('do_feed_atom_comments', 'disable_feeds', 1);

// Remove generator tag from RSS feeds
function remove_rss_generator() {
    return '';
}
add_filter('the_generator', 'remove_rss_generator');

// Remove Windows Live Writer manifest link
remove_action('wp_head', 'wlwmanifest_link');
// Remove RSD link
remove_action('wp_head', 'rsd_link');
// Remove shortlink from HTTP headers
remove_action('template_redirect', 'wp_shortlink_header', 11);

// =======================
// 11. (Rất rủi ro) Tắt kiểm tra update plugin - bạn đang dùng
// =======================
remove_action('load-plugins.php', 'wp_update_plugins');
remove_action('load-update.php', 'wp_update_plugins');
remove_action('admin_init', '_maybe_update_plugins');
remove_action('wp_update_plugins', 'wp_update_plugins');
remove_action('do_all_pings', 'wp_update_plugins');
remove_action('wp_version_check', 'wp_update_plugins');
remove_action('admin_init', '_maybe_update_plugins');
add_filter('pre_site_transient_update_plugins', '__return_null');

// =======================
// 12. Bỏ một số script không cần thiết
// =======================
function remove_unnecessary_scripts() {
    if (!is_admin()) {
        wp_deregister_script('jquery-migrate');
    }

    if (!current_user_can('manage_options')) {
        wp_dequeue_script('query-monitor');
    }

    if (!is_user_logged_in()) {
        wp_dequeue_script('admin-bar');
    }

    wp_dequeue_script('hoverIntent');
}
add_action('wp_enqueue_scripts', 'remove_unnecessary_scripts', 100);

// Thumbnail gallery nhỏ hơn
add_filter( 'woocommerce_get_image_size_gallery_thumbnail', function( $size ) {
    return array(
        'width'  => 125,
        'height' => 125,
        'crop'   => 1,
    );
} );

// =======================
// 13. LOG PERF TRANG PRODUCT (WCVD PERF TEST)
// =======================

// Bật lưu query nếu chưa bật (có thể đã khai báo trong wp-config.php)
if ( ! defined( 'SAVEQUERIES' ) ) {
    define( 'SAVEQUERIES', true );
}

/**
 * Log thời gian PHP xử lý + số lượng query SQL trên TRANG SẢN PHẨM.
 */
add_action( 'shutdown', function() {
    if ( ! defined( 'WP_DEBUG' ) || ! WP_DEBUG ) {
        return;
    }

    if ( ! function_exists( 'is_product' ) || ! is_product() ) {
        return;
    }

    $time = timer_stop( 0, 3 );

    global $wpdb;
    $queries = ( isset( $wpdb->queries ) && is_array( $wpdb->queries ) ) ? count( $wpdb->queries ) : 0;

    error_log( sprintf(
        'WCVD PERF TEST: PAGE TIME (PHP) on single product: %s s, SQL QUERIES: %d',
        $time,
        $queries
    ) );
} );

// =======================
// 13. TAT JS MINI CART
// =======================
add_action('wp_enqueue_scripts', 'wptangtoc_clear_ajax_dieu_kien_gio_hang', 99);
function wptangtoc_clear_ajax_dieu_kien_gio_hang() {
	if(function_exists('is_woocommerce')) {
		wp_dequeue_script('wc-cart-fragments');
		wp_deregister_script('wc-cart-fragments');
	}
}

// =======================
// 14. THEM SCHEMA
// =======================
add_filter('rank_math/json_ld', function ($data, $jsonld) {

    // Chỉ áp dụng cho TRANG CHỦ (front page). Nếu homepage là posts page thì thêm is_home() bên dưới.
    if ( ! is_front_page() ) {
        return $data;
    }

    // ========= 1) INPUT (từ bạn cung cấp) =========
    $site_url  = 'https://khungtranhre.com/';
    $brand     = 'KHUNG TRANH RẺ';

    $logo_url  = 'https://khungtranhre.com/wp-content/uploads/2026/01/logo-vuong.png';
    $images    = [
        'https://khungtranhre.com/wp-content/uploads/2022/05/banner-ngang-khung-tranh-re.jpg',
        'https://khungtranhre.com/wp-content/uploads/2022/05/banner-khungtranhre.jpg',
        $logo_url,
    ];

    // Địa chỉ: để “khớp Google Maps listing” + vẫn đúng mô tả mới
    // StreetAddress + Locality tách rõ ràng giúp Google hiểu tốt hơn.
    $address = [
        '@type'           => 'PostalAddress',
        'streetAddress'   => '38, Athena Complex, Xuân Phương',
        'addressLocality' => 'Nam Từ Liêm',
        'addressRegion'   => 'Hà Nội',
        'addressCountry'  => 'VN',
    ];

    // Tọa độ lấy trực tiếp từ link maps bạn gửi (dạng number)
    $geo = [
        '@type'     => 'GeoCoordinates',
        'latitude'  => 21.0400562,
        'longitude' => 105.7343999,
    ];

    $map_url = 'https://maps.app.goo.gl/g3QYHUz2Gk6poqE9A';

    $phone_e164 = '+84988391380';
    $email      = 'xuongkhungtranhre@gmail.com';

    // Giờ mở cửa: 8h–17h hằng ngày
    $opening_hours = [[
        '@type'     => 'OpeningHoursSpecification',
        'dayOfWeek' => ['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday'],
        'opens'     => '08:00',
        'closes'    => '17:00',
    ]];

    $same_as = [
        'https://www.facebook.com/khungtranhre',
        'https://twitter.com/khungtranhre',
    ];

    $legal_pages = [
        'about'   => 'https://khungtranhre.com/gioi-thieu/',
        'contact' => 'https://khungtranhre.com/lien-he/',
        'privacy' => 'https://khungtranhre.com/chinh-sach-bao-mat/',
        'terms'   => 'https://khungtranhre.com/chinh-sach-ban-hang/',
    ];

    $price_range = '10000-1000000 VND';

    // ========= 2) IDs thống nhất =========
    $org_id      = rtrim($site_url, '/') . '/#organization';
    $website_id  = rtrim($site_url, '/') . '/#website';
    $webpage_id  = rtrim($site_url, '/') . '/#webpage';
    $logo_id     = rtrim($site_url, '/') . '/#logo';
    $biz_id      = rtrim($site_url, '/') . '/#localbusiness';

    // ========= 3) Helper: tìm node Organization của Rank Math để "làm dày" =========
    $org_key = null;
    foreach ($data as $key => $node) {
        if (!is_array($node) || empty($node['@type']) || empty($node['@id'])) continue;
        $types = is_array($node['@type']) ? $node['@type'] : [$node['@type']];
        if (in_array('Organization', $types, true) && $node['@id'] === $org_id) {
            $org_key = $key;
            break;
        }
    }

    // Nếu Rank Math chưa tạo đúng key Organization (hiếm), ta tự tạo
    if ($org_key === null) {
        $data['Organization'] = [
            '@type' => 'Organization',
            '@id'   => $org_id,
            'name'  => $brand,
        ];
        $org_key = 'Organization';
    }

    // ========= 4) Làm dày Organization =========
    $data[$org_key]['name'] = $brand;
    $data[$org_key]['url']  = $site_url;
    $data[$org_key]['logo'] = [
        '@type' => 'ImageObject',
        '@id'   => $logo_id,
        'url'   => $logo_url,
    ];
    $data[$org_key]['image']  = $images;
    $data[$org_key]['sameAs'] = $same_as;
    $data[$org_key]['email']  = $email;

    // ContactPoint cho Organization (tốt cho Knowledge Graph)
    $data[$org_key]['contactPoint'] = [[
        '@type'              => 'ContactPoint',
        'telephone'          => $phone_e164,
        'email'              => $email,
        'contactType'        => 'customer support',
        'areaServed'         => 'VN',
        'availableLanguage'  => ['vi'],
    ]];

    // ========= 5) Ensure WebSite/WebPage trỏ đúng publisher/about =========
    foreach ($data as $key => $node) {
        if (!is_array($node) || empty($node['@type']) || empty($node['@id'])) continue;

        if ($node['@id'] === $website_id) {
            // WebSite.publisher -> Organization
            $data[$key]['publisher'] = ['@id' => $org_id];
            $data[$key]['url']       = rtrim($site_url, '/'); // RankMath hay dùng không slash
            $data[$key]['name']      = $brand;
        }

        if ($node['@id'] === $webpage_id) {
            // WebPage.about -> Organization, isPartOf -> WebSite
            $data[$key]['about']    = ['@id' => $org_id];
            $data[$key]['isPartOf'] = ['@id' => $website_id];
            $data[$key]['url']      = $site_url;
        }
    }

    // ========= 6) Add Logo ImageObject node (để graph rõ ràng hơn) =========
    $data['Logo'] = [
        '@type' => 'ImageObject',
        '@id'   => $logo_id,
        'url'   => $logo_url,
    ];

    // ========= 7) Add/replace LocalBusiness node (FurnitureStore) =========
    $data['LocalBusiness'] = [
        '@type' => ['LocalBusiness', 'FurnitureStore'],
        '@id'   => $biz_id,
        'name'  => $brand,
        'url'   => $site_url,
        'image' => $images,
        'logo'  => ['@id' => $logo_id],

        'telephone' => $phone_e164,
        'email'     => $email,

        'parentOrganization' => ['@id' => $org_id],

        'address' => $address,
        'geo'     => $geo,

        'hasMap'  => $map_url,

        'openingHoursSpecification' => $opening_hours,

        'areaServed' => [
            '@type' => 'Country',
            'name'  => 'Vietnam',
        ],

        'contactPoint' => [[
            '@type'              => 'ContactPoint',
            'telephone'          => $phone_e164,
            'email'              => $email,
            'contactType'        => 'customer support',
            'areaServed'         => 'VN',
            'availableLanguage'  => ['vi'],
        ]],

        'sameAs'        => $same_as,
        'priceRange'    => $price_range,
        'currenciesAccepted' => 'VND',

        // Trang pháp lý (không bắt buộc nhưng sạch + hữu ích)
        'subjectOf' => [
            ['@type' => 'WebPage', 'url' => $legal_pages['about'],   'name' => 'Giới thiệu'],
            ['@type' => 'WebPage', 'url' => $legal_pages['contact'], 'name' => 'Liên hệ'],
            ['@type' => 'WebPage', 'url' => $legal_pages['privacy'], 'name' => 'Chính sách bảo mật'],
            ['@type' => 'WebPage', 'url' => $legal_pages['terms'],   'name' => 'Chính sách bán hàng'],
        ],
    ];

    return $data;
}, 99, 2);
// =======================
// 14. 301 phan trang 404
// =======================
add_action('template_redirect', 'redirect_custom_404_pagination');
function redirect_custom_404_pagination() {
    // Chỉ chạy nếu là trang lỗi 404
    if ( is_404() ) {
        $url = $_SERVER['REQUEST_URI'];
        
        // Kiểm tra xem trong URL có chứa chuỗi "/page/số_thứ_tự/" hay không
        if ( preg_match('#/page/[0-9]+/?#', $url) ) {
            
            // Xóa phần "/page/xxx/" khỏi URL để lấy link gốc
            $redirect_url = preg_replace('#/page/[0-9]+/?.*#', '', $url);
            
            // Chuyển hướng 301 về link gốc đó
            wp_redirect( home_url( $redirect_url ), 301 );
            exit();
        }
    }
}

<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="//khungtranhre.com/main-sitemap.xsl"?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
	<sitemap>
		<loc>https://khungtranhre.com/post-sitemap.xml</loc>
		<lastmod>2026-01-29T09:52:35+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>https://khungtranhre.com/page-sitemap.xml</loc>
		<lastmod>2026-03-24T08:18:34+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>https://khungtranhre.com/product-sitemap.xml</loc>
		<lastmod>2026-04-29T04:20:58+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>https://khungtranhre.com/featured_item-sitemap.xml</loc>
		<lastmod>2022-05-11T03:45:46+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>https://khungtranhre.com/product_cat-sitemap.xml</loc>
		<lastmod>2026-04-29T04:20:58+00:00</lastmod>
	</sitemap>
</sitemapindex>
<!-- XML Sitemap generated by Rank Math SEO Plugin (c) Rank Math - rankmath.com -->