<?php

// Display Older / Newer Posts Links
if ( ! function_exists( 'webcom_content_nav' ) ) :
function webcom_content_nav( $html_id ) {
    global $wp_query;

    $html_id = esc_attr( $html_id );

    if ( $wp_query->max_num_pages > 1 ) : ?>
        <nav id="<?php echo $html_id; ?>" class="blog-navigation" role="navigation">
            <h3 class="assistive-text">Post navigation</h3>
            <div class="nav-previous"><?php next_posts_link( '<span class="meta-nav"><i class="fa fa-arrow-left" aria-hidden="true"></i></span> Older posts' ); ?></div>
            <div class="nav-next"><?php previous_posts_link( 'Newer posts <span class="meta-nav"><i class="fa fa-arrow-right" aria-hidden="true"></i></span>' ); ?></div>
        </nav>
    <?php endif;
}
endif;

// Creates Post Entry Meta at bottom of each Post
if ( ! function_exists( 'webcom_entry_meta' ) ) :
function webcom_entry_meta() {

    $categories_list = get_the_category_list( ', ' );
    $tag_list = get_the_tag_list( '', ', ' );

    $date = sprintf( '<a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s">%4$s</time></a>',
        esc_url( get_permalink() ),
        esc_attr( get_the_time() ),
        esc_attr( get_the_date( 'c' ) ),
        esc_html( get_the_date() )
    );

    $author = sprintf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s" rel="author">%3$s</a></span>',
        esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
        esc_attr( sprintf( 'View all posts by %s', get_the_author() ) ),
        get_the_author()
    );

    // 1 is category, 2 is tag, 3 is the date and 4 is the author's name.
    $utility_text = 'This entry was posted';
    if( $categories_list )
        $utility_text .= ' in %1$s';
    if( $tag_list )
        $utility_text .= ' and tagged %2$s';
    $utility_text .= ' on %3$s';
    if(!user_can(get_the_author_meta('ID'), 'manage_network'))
        $utility_text .= ' <span class="by-author">by %4$s</span>';
    $utility_text .= '.';

    printf(
        $utility_text,
        $categories_list, // 1
        $tag_list,        // 2
        $date,            // 3
        $author           // 4
    );
}
endif;


/**
 * Creates a custom excerpt from the content of a post.
 *
 * If the excerpt has been set for the post, the excerpt will be shown along with the read more link.
 *
 * If no excerpt has been set, the content will be used. The content will be formated to have
 * shortcodes and some HTML removed. 
 *
 * @param array $args {
 *
 *     @type int     $limit          Number of words to be returned.
 *     @type string  $more_text      What to append to trimmed content. Default &hellip;.
 *     @type bool    $more_link_text Text to be used inside the read more link. Default 'Continue reading'.
 * }
 */
if ( ! function_exists( 'webcom_post_loop_summary' ) ) {
	function webcom_post_loop_summary( $args ) {
		
		$defaults = array(
			'word_limit'     => 55,
			'char_limit'     => false,
			'more_text'      => '&hellip;',
			'more_link_text' => 'Continue reading',
		);
		
		$args = wp_parse_args( $args, $defaults );

		if ( has_excerpt() ) {
			
			//the_excerpt();
			echo apply_filters( 'the_excerpt', get_the_excerpt() );
			
		} else {
			
			$allowed_tags = wp_kses_allowed_html( 'excerpt' );
			
			// Get the raw content for the current post.
			$post_content = get_post();
			$post_content = $post_content->post_content;
			$post_content = strip_shortcodes( $post_content );
			$post_content = str_replace(']]>', ']]&gt;', $post_content);
			$post_content = str_replace( array( '<!--more-->', '<!--nextpage-->' ), '', $post_content ); // Remove more and nextpage tags.

			if ( false !== $args['char_limit'] ) {
				
				$post_content = wp_strip_all_tags( $post_content );      // Strip all HTML from content.
				$post_content = substr( $post_content, 0, $args['char_limit'] ); // trims text to a certain number of words.
				
			} else {

				// https://core.trac.wordpress.org/ticket/29533
				$post_content = wp_kses( $post_content, $allowed_tags );            // Strip HTML from content.
				$post_content = htmlentities( $post_content );                      // Convert characters to HTML entities, so wp_trim_words dosn't remove them.
				$post_content = wp_trim_words( $post_content, $args['word_limit'], '' ); // trims text to a certain number of words.
				$post_content = html_entity_decode( $post_content );                // Convert all HTML entities to their applicable characters.
				$post_content = force_balance_tags( $post_content );                // Balances HTML tags inside a string.
				
			}
			
			$post_content = wpautop( $post_content . $args['more_text'] ); // Add P tags to the summary.

			echo $post_content;
		}
		
		if ( ! ( '' === $args['more_link_text'] || false === $args['more_link_text'] ) ) {
			echo '<p><a href="' . get_the_permalink() . '" class="more-link">' . $args['more_link_text'] . '</a></p>';
		}
	}
}