add_action( 'after_setup_theme', 'child_theme_setup', 20 );

function child_theme_setup() {
    remove_shortcode( 'blog' );
    add_shortcode( 'blog', 'my_blog' );
}

function my_blog($attributes, $content = null)
    {
        $attributes = shortcode_atts(
            array(
                'pagination' => false,
                'type' => 'square',
                'show_date' => null,
                'show_author' => null,
                'show_categories' => null,
                'show_tags' => null,
                'show_comments' => null,
                'show_read_more' => null,
                'category' => null,
                'items' => null,
                'columns' => null,
            ), $attributes);

        $blog_thumbnails = array(
            'square' => 'blog-list','rounded' => 'blog-list','masonry' => 'blog-grid'
        );

        if ( ! in_array($attributes['type'], array('square','rounded','masonry')))
        {
            $attributes['type'] = 'square';
        }

        if ( ! in_array($attributes['columns'], array(1,2,3)))
        {
            $attributes['columns'] = 1;
        }

        if ($attributes['pagination'] == 1 OR $attributes['pagination'] == 'yes') {
            $paged = get_query_var('paged') ? get_query_var('paged') : 1;
        } else {
            $paged = 1;
        }

        $args = array(
//            'post_type'       => 'us_portfolio',
            'post_type'         => 'post',
            'post_status'       => 'publish',
            'orderby'           => 'date',
            'order'             => 'DESC',
            'paged'             => $paged
        );

        $categories_slugs = null;

        if ( ! empty($attributes['category']))
        {
            $categories_slugs = explode(',', $attributes['category']);
            $args['tax_query'] = array(
                array(
                    'taxonomy' => 'category',
                    'field' => 'slug',
                    'terms' => $categories_slugs
                )
            );
        }

        $attributes['items'] = intval($attributes['items']);
        if (is_integer($attributes['items']) AND $attributes['items'] > 0) {
            $args['posts_per_page'] = $attributes['items'];
        }

        $classes = 'w-blog columns_'.$attributes['columns'];;

        switch ($attributes['type']) {
            case 'square': $classes .= ' imgpos_atleft';
                break;
            case 'rounded': $classes .= ' imgpos_atleft circle';
                break;
            case 'masonry': $classes .= ' imgpos_attop type_masonry';
                break;
        }

        $output = '<div class="'.$classes.'">
                        <div class="w-blog-list">';


        global $wp_query;

        $temp = $wp_query; $wp_query= null;
        $wp_query = new WP_Query(); $wp_query->query($args);


        $us_thumbnail_size = $blog_thumbnails[$attributes['type']];
        if (empty($us_thumbnail_size))
        {
            $us_thumbnail_size = 'blog-list';
        }

        while ($wp_query->have_posts())
        {
            $wp_query->the_post();
            global $smof_data;

            $post_format = get_post_format()?get_post_format():'standard';

            global $post;

            $preview = (has_post_thumbnail())?get_the_post_thumbnail(get_the_ID(), $us_thumbnail_size):'';


            if (empty($preview) AND $us_thumbnail_size == 'blog-list')
            {
                $preview = '<img src="'.get_template_directory_uri().'/img/placeholder/500x500.gif" alt="">';
            }
            $output .= '<div class="' . join( ' ', get_post_class( 'w-blog-entry', null ) ) . '">
                <div class="w-blog-entry-h">
                    <a class="w-blog-entry-link" href="'.get_permalink().'">';
            if ($preview) {
                $output .= '<span class="w-blog-entry-preview">'.$preview.'</span>';
            }
//            if ($post_format == 'quote')
//            {
//                $output .= '<div class="w-blog-entry-title">
//                <blockquote class="w-blog-entry-title-h">'.get_the_title().'</blockquote>
//                </div>';
//            }
//            else
//            {
                $output .= '<h2 class="w-blog-entry-title"><span>'.get_the_title().'</span></h2>';
//            }
            $output .= '</a>
                    <div class="w-blog-entry-body">
                        <div class="w-blog-meta">';
            if ($attributes['show_date'] == 1 OR $attributes['show_date'] == 'yes') {
                $output .= '<div class="w-blog-meta-date">
                                <i class="fa fa-clock-o"></i>
                                <span>'.get_the_date().'</span>
                            </div>';
            }
            if ($attributes['show_author'] == 1 OR $attributes['show_author'] == 'yes') {
                $output .= '<div class="w-blog-meta-author">
                                <i class="fa fa-user"></i>';
                if (get_the_author_meta('url')) {
                    $output .= '<a href="'.esc_url( get_the_author_meta('url') ).'">'.get_the_author().'</a>';
                } else {
                    $output .= '<span>'.get_the_author().'</span>';
                }
                $output .= '</div>';
            }
            if ($attributes['show_categories'] == 1 OR $attributes['show_categories'] == 'yes') {
                $output .= '<div class="w-blog-meta-category">
                                <i class="fa fa-folder-open"></i>';
                $categories = get_the_category();
                $categories_output = '';
                $separator = ', ';
                if($categories){
                    foreach($categories as $category) {
                        $categories_output .= '<a href="'.get_category_link( $category->term_id ).'" title="' . esc_attr( sprintf( __( "View all posts in %s" ), $category->name ) ) . '">'.$category->cat_name.'</a>'.$separator;
                    }
                }
                $output .= trim($categories_output, $separator).'
                                </div>';
            }
            if ($attributes['show_tags'] == 1 OR $attributes['show_tags'] == 'yes') {
                $tags = wp_get_post_tags($post->ID);
                if ($tags) {
                    $output .= '<div class="w-blog-meta-tags">
                                    <i class="fa fa-tags"></i>';

                    $tags_output = '';
                    $separator = ', ';
                    foreach($tags as $tag) {
                        $tags_output .= '<a href="'.get_tag_link($tag->term_id).'">'.$tag->name.'</a>'.$separator;
                    }

                    $output .= trim($tags_output, $separator).'
                                    </div>';
                }
            }
            if ($attributes['show_comments'] == 1 OR $attributes['show_comments'] == 'yes') {

                if ( ! (get_comments_number() == 0 AND ! comments_open() AND ! pings_open())) {
                    $output .= '<div class="w-blog-meta-comments">';
                    $output .= '<i class="fa fa-comments"></i>';
                    $number = get_comments_number();

                    if ( 0 == $number ) {
                        $comments_link = get_permalink() . '#respond';
                    }
                    else {
                        $comments_link = esc_url(get_comments_link());
                    }
                    $output .= '<a href="'.$comments_link.'">';

                    if ( $number > 1 )
                        $output .= str_replace('%', number_format_i18n($number), __('% Comments', 'us'));
                    elseif ( $number == 0 )
                        $output .= __('No Comments', 'us');
                    else // must be one
                        $output .= __('1 Comment', 'us');
                    $output .= '</a></div>';
                }

            }
            $output .= '</div>';

            $output .= '<div class="w-blog-entry-short">';

            $excerpt = get_the_content(get_the_ID());
            $excerpt = do_shortcode($excerpt);


            $excerpt = apply_filters('the_excerpt', $excerpt);
            $excerpt = str_replace(']]>', ']]&gt;', $excerpt);
            $excerpt_length = apply_filters('excerpt_length', 55);
            $excerpt_more = apply_filters('excerpt_more', ' ' . '[...]');
            $excerpt = wp_trim_words( $excerpt, $excerpt_length, $excerpt_more );

            $output .= $excerpt;

            $output .= '</div>';

            if ($attributes['show_read_more'] == 1 OR $attributes['show_read_more'] == 'yes') {
                $output .= '<a class="w-blog-entry-more g-btn color_faded outlined size_small" href="'.get_permalink().'"><span>'.__('Read More', 'us').'</span></a>';
            }

            $output .= '</div>
                </div>
            </div>';
        }

        $output .= '</div></div>';

        if ($attributes['pagination'] == 1 OR $attributes['pagination'] == 'yes') {
            if ($pagination = us_pagination()) {
                $output .= '<div class="w-portfolio-pagination">
                    <div class="g-pagination align_center">
                        '.$pagination.'
                    </div>
                </div>';
            }
        }

        wp_reset_postdata();
        $wp_query= $temp;

        return $output;
    }