<?php

function get_flatsome_blog_breadcrumbs() {
    $delimiter = '<span class="divider">&#47;</span>';
    $home = 'Trang chủ';
    $before = '';
    $after = '';
    if ( !is_home() && !is_front_page() || is_paged() ) {
        echo '<div class="page-title shop-page-title product-page-title"><div class="page-title-inner flex-row medium-flex-wrap container"><div class="flex-col flex-grow medium-text-center"><div class="is-medium">';
        echo '<nav class="breadcrumbs">';
        global $post;
        $homeLink = get_bloginfo('url');
        echo '<a href="' . $homeLink . '">' . $home . '</a> ' . $delimiter . ' ';
        if ( is_category() ) {
            global $wp_query;
            $cat_obj = $wp_query->get_queried_object();
            $thisCat = $cat_obj->term_id;
            $thisCat = get_category($thisCat);
            $parentCat = get_category($thisCat->parent);
            if ($thisCat->parent != 0) echo(get_category_parents($parentCat, TRUE, ' ' . $delimiter . ' '));
            echo $before . single_cat_title('', false) . $after;
        } elseif ( is_day() ) {
            echo '<a href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
            echo '<a href="' . get_month_link(get_the_time('Y'),get_the_time('m')) . '">' . get_the_time('F') . '</a> ' . $delimiter . ' ';
            echo $before . get_the_time('d') . $after;
        } elseif ( is_month() ) {
            echo '<a href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
            echo $before . get_the_time('F') . $after;
        } elseif ( is_year() ) {
            echo $before . get_the_time('Y') . $after;
        } elseif ( is_single() && !is_attachment() ) {
            if ( get_post_type() != 'post' ) {
                $post_type = get_post_type_object(get_post_type());
                $slug = $post_type->rewrite;
                echo '<a href="' . $homeLink . '/' . $slug['slug'] . '/">' . $post_type->labels->singular_name . '</a> ' . $delimiter . ' ';
                echo $before . get_the_title() . $after;
            } else {
                $cat = get_the_category(); $cat = $cat[0];
                echo get_category_parents($cat, TRUE, ' ' . $delimiter . ' ');
                echo $before . get_the_title() . $after;
            }
        } elseif ( !is_single() && !is_page() && get_post_type() != 'post' && !is_404() ) {
            $post_type = get_post_type_object(get_post_type());
            echo $before . $post_type->labels->singular_name . $after;
        } elseif ( is_attachment() ) {
            $parent = get_post($post->post_parent);
            $cat = get_the_category($parent->ID); $cat = $cat[0];
            echo get_category_parents($cat, TRUE, ' ' . $delimiter . ' ');
            echo '<a href="' . get_permalink($parent) . '">' . $parent->post_title . '</a> ' . $delimiter . ' ';
            echo $before . get_the_title() . $after;
        } elseif ( is_page() && !$post->post_parent ) {
            echo $before . get_the_title() . $after;
        } elseif ( is_page() && $post->post_parent ) {
            $parent_id = $post->post_parent;
            $breadcrumbs = array();
            while ($parent_id) {
                $page = get_page($parent_id);
                $breadcrumbs[] = '<a href="' . get_permalink($page->ID) . '">' . get_the_title($page->ID) . '</a>';
                $parent_id = $page->post_parent;
            }
            $breadcrumbs = array_reverse($breadcrumbs);
            foreach ($breadcrumbs as $crumb) echo $crumb . ' ' . $delimiter . ' ';
            echo $before . get_the_title() . $after;
        } elseif ( is_search() ) {
            echo $before . 'Search results for "' . get_search_query() . '"' . $after;
        } elseif ( is_tag() ) {
            echo $before . 'Posts tagged "' . single_tag_title('', false) . '"' . $after;
        } elseif ( is_author() ) {
            global $author;
            echo $before . 'Articles posted by ' . $userdata->display_name . $after;
        } elseif ( is_404() ) {
            echo $before . 'Error 404' . $after;
        }
        if ( get_query_var('paged') ) {
            if ( is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author() ) echo ' (';
            echo __('Page') . ' ' . get_query_var('paged');
            if ( is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author() ) echo ')';
        }
        echo '</nav>';
        echo '</div></div></div></div>';
    }
}
add_action( 'flatsome_before_blog' , 'get_flatsome_blog_breadcrumbs', 20 );

add_filter( 'gutenberg_use_widgets_block_editor', '__return_false' );
function print_menu_shortcode($atts, $content = null) {
    extract(shortcode_atts(array( 'name' => null, 'class' => null ), $atts));
    return wp_nav_menu( array( 'menu' => $name, 'menu_class' => 'myclass', 'echo' => false ) );
}
add_shortcode('menu', 'print_menu_shortcode');

//WordPress - 使用 PHP 缩小 CSS、HTML、JS 文件
class WP_HTML_Compression{
    protected $wp_compress_css = true;
    protected $wp_compress_js = true;
    protected $wp_info_comment = true;
    protected $wp_remove_comments = true;
    protected $html;
    public function __construct($html)
    {
        if (!empty($html)) {
            $this->wp_parseHTML($html);
        }
    }
    public function __toString()
    {
        return $this->html;
    }
    protected function wp_bottomComment($raw, $compressed)
    {
        $raw = strlen($raw);
        $compressed = strlen($compressed);
        $savings = ($raw - $compressed) / $raw * 100;
        $savings = round($savings, 2);
        return '<!--HTML compressed, size saved ' . $savings . '%. From ' . $raw . ' bytes, now ' . $compressed . ' bytes-->';
    }
    protected function wp_minifyHTML($html)
    {
        $pattern = '/<(?<script>script).*?<\/script\s*>|<(?<style>style).*?<\/style\s*>|<!(?<comment>--).*?-->|<(?<tag>[\/\w.:-]*)(?:".*?"|\'.*?\'|[^\'">]+)*>|(?<text>((<[^!\/\w.:-])?[^<]*)+)|/si';
        preg_match_all($pattern, $html, $matches, PREG_SET_ORDER);
        $overriding = false;
        $raw_tag = false;
        $html = '';
        foreach ($matches as $token) {
            $tag = (isset($token['tag'])) ? strtolower($token['tag']) : null;
            $content = $token[0];
            if (is_null($tag)) {
                if (!empty($token['script'])) {
                    $strip = $this->wp_compress_js;
                } else if (!empty($token['style'])) {
                    $strip = $this->wp_compress_css;
                } else if ($content == '<!--wp-html-compression no compression-->') {
                    $overriding = !$overriding;
                    continue;
                } else if ($this->wp_remove_comments) {
                    if (!$overriding && $raw_tag != 'textarea') {
                        $content = preg_replace('/<!--(?!\s*(?:\[if [^\]]+]|<!|>))(?:(?!-->).)*-->/s', '', $content);
                    }
                }
            } else {
                if ($tag == 'pre' || $tag == 'textarea') {
                    $raw_tag = $tag;
                } else if ($tag == '/pre' || $tag == '/textarea') {
                    $raw_tag = false;
                } else {
                    if ($raw_tag || $overriding) {
                        $strip = false;
                    } else {
                        $strip = true;
                        $content = preg_replace('/(\s+)(\w++(?<!\baction|\balt|\bcontent|\bsrc)="")/', '$1', $content);
                        $content = str_replace(' />', '/>', $content);
                    }
                }
            }
            if ($strip) {
                $content = $this->wp_removeWhiteSpace($content);
            }
            $html .= $content;
        }
        return $html;
    }
    public function wp_parseHTML($html)
    {
        $this->html = $this->wp_minifyHTML($html);
        if ($this->wp_info_comment) {
            $this->html .= "\n" . $this->wp_bottomComment($html, $this->html);
        }
    }
    protected function wp_removeWhiteSpace($str)
    {
        $str = str_replace("\t", ' ', $str);
        $str = str_replace("\n",  '', $str);
        $str = str_replace("\r",  '', $str);
        $str = str_replace(" This function requires postMessage and CORS (if the site is cross domain).", '', $str);
        while (stristr($str, '  ')) {
            $str = str_replace('  ', ' ', $str);
        }
        return $str;
    }
}


function wp_html_compression_finish($html){
    return new WP_HTML_Compression($html);
}

function wp_wp_html_compression_start(){
    ob_start('wp_html_compression_finish');
}

add_action('get_header', 'wp_wp_html_compression_start');