<?php

/**
 * Core functions and definitions
 *
 * Sets up the theme
 *
 * The first function, rock_star_initial_setup(), sets up the theme by registering support
 * for various features in WordPress, such as theme support, post thumbnails, navigation menu, and the like.
 *
 * Rock Star functions and definitions
 *
 * @package Catch Themes
 * @subpackage Rock Star
 * @since Rock Star 0.3
 */

if (! function_exists('rock_star_content_width')) :
	/**
	 * Set the content width in pixels, based on the theme's design and stylesheet.
	 *
	 * Priority 0 to make it available to lower priority callbacks.
	 *
	 * @global int $content_width
	 */
	function rock_star_content_width()
	{
		$GLOBALS['content_width'] = apply_filters('rock_star_content_width', 840);
	}
endif;
add_action('after_setup_theme', 'rock_star_content_width', 0);


if (! function_exists('rock_star_template_redirect')) :
	/**
	 * Set the content width in pixels, based on the theme's design and stylesheet for different value other than the default one
	 *
	 * @global int $content_width
	 */
	function rock_star_template_redirect()
	{
		$layout = rock_star_get_theme_layout();

		if ('no-sidebar-full-width' == $layout) {
			$GLOBALS['content_width'] = 1200;
		}
	}
endif;
add_action('template_redirect', 'rock_star_template_redirect');


if (! function_exists('rock_star_setup')) :
	/**
	 * Sets up theme defaults and registers support for various WordPress features.
	 *
	 * Note that this function is hooked into the after_setup_theme hook, which runs
	 * before the init hook. The init hook is too late for some features, such as indicating
	 * support post thumbnails.
	 */
	function rock_star_setup()
	{
		/**
		 * Get Theme Options Values
		 */
		$options 	= rock_star_get_theme_options();

		/**
		 * Make theme available for translation
		 * Translations can be filed in the /languages/ directory
		 * If you're building a theme based on Rock Star, use a find and replace
		 * to change 'rock-star' to the name of your theme in all the template files
		 */
		load_theme_textdomain('rock-star', get_template_directory() . '/languages');

		/**
		 * Add default posts and comments RSS feed links to head
		 */
		add_theme_support('automatic-feed-links');

		/**
		 * Enable support for Post Thumbnails on posts and pages
		 *
		 * @link http://codex.wordpress.org/Function_Reference/add_theme_support#Post_Thumbnails
		 */
		add_theme_support('post-thumbnails');

		/**
		 * Add excerpt box in pages
		 */
		add_post_type_support('page', 'excerpt');

		// used in Header Highlight small image, Featured Content, Post Thumbnail( Except Sticky ) Ratio 4:3
		set_post_thumbnail_size(420, 280, true);

		// Add Rock Star's custom image sizes
		add_image_size('rock-star-slider', 1920, 1080, true); // Used for Featured slider

		//Archive Images for Archive Image Top Ratio 4:3
		add_image_size('rock-star-featured', 840, 630, true);

		add_image_size('rock-star-landscape', 385, 257, true); // used in Archive Image Left/Right Ratio 4:3

		//Small Images for Featured posts widget and widgets 90x68
		add_image_size('rock-star-small', 90, 68, true);


		/**
		 * This theme uses wp_nav_menu() in one location.
		 */
		register_nav_menus(array(
			'primary' => esc_html__('Primary Menu', 'rock-star'),
		));

		/**
		 * Enable support for Post Formats
		 */
		add_theme_support('post-formats', array('aside', 'image', 'video', 'quote', 'link'));

		/**
		 * Setup the WordPress core custom background feature.
		 */
		$default_options = rock_star_get_default_theme_options(); //Get Default Theme Options Values

		/**
		 * Setup the WordPress core custom background feature.
		 */
		$bg_defaults = array(
			'default-preset'     => 'fit',
			'default-repeat'     => 'no-repeat',
			'default-position-x' => 'center',
			'default-attachment' => 'fixed',
		);

		if ('dark' == $options['color_scheme']) {
			$default_bg_color = rock_star_get_default_theme_options();

			$bg_defaults['default-image'] = trailingslashit(esc_url(get_template_directory_uri())) . 'images/background-dark-1920x1080.jpg';
		} elseif ('light' == $options['color_scheme']) {
			$default_bg_color = rock_star_default_light_color_options();

			$bg_defaults['default-image'] = trailingslashit(esc_url(get_template_directory_uri())) . 'images/background-light-1920x1080.jpg';
		}

		$bg_defaults['default-color'] = $default_bg_color['background_color'];

		add_theme_support('custom-background', apply_filters('rock_star_custom_background_args', $bg_defaults));

		/**
		 * Setup Editor style
		 */
		add_editor_style('css/editor-style.css');

		/**
		 * Setup title support for theme
		 * Supported from WordPress version 4.1 onwards
		 * More Info: https://make.wordpress.org/core/2014/10/29/title-tags-in-4-1/
		 */
		add_theme_support('title-tag');

		/**
		 * Setup Custom Logo Support for theme
		 * Supported from WordPress version 4.5 onwards
		 * More Info: https://make.wordpress.org/core/2016/03/10/custom-logo/
		 */
		add_theme_support('custom-logo');

		/**
		 * Setup Infinite Scroll using JetPack if navigation type is set
		 */
		$pagination_type	= $options['pagination_type'];

		if ('infinite-scroll-click' == $pagination_type) {
			add_theme_support('infinite-scroll', array(
				'type'		=> 'click',
				'container' => 'archive-blog-wrapper',
				'wrapper'   => false,
				'footer'    => 'page'
			));
		} elseif ('infinite-scroll-scroll' == $pagination_type) {
			//Override infinite scroll disable scroll option
			update_option('infinite_scroll', true);

			add_theme_support('infinite-scroll', array(
				'type'      => 'scroll',
				'container' => 'archive-blog-wrapper',
				'wrapper'   => false,
				'footer'    => 'page'
			));
		}
	}
endif; // rock_star_setup
add_action('after_setup_theme', 'rock_star_setup');


/**
 * Enqueue scripts and styles
 *
 * @uses  wp_register_script, wp_enqueue_script, wp_register_style, wp_enqueue_style, wp_localize_script
 * @action wp_enqueue_scripts
 *
 * @since Rock Star 0.3
 */
function rock_star_scripts()
{
	$options = rock_star_get_theme_options();

	//For fontawesome
	wp_enqueue_style('font-awesome', trailingslashit(esc_url(get_template_directory_uri())) . 'css/font-awesome/css/all.min.css', array(), '6.7.2', 'all');

	$deps[] = 'font-awesome';

	wp_enqueue_style('rock-star-style', get_stylesheet_uri(), $deps, ROCK_STAR_THEME_VERSION);

	wp_enqueue_style('rock-star-fonts', rock_star_fonts_url(), array(), ROCK_STAR_THEME_VERSION);

	/**
	 * Enqueue the styles for the current color scheme for catchbase.
	 */
	if ('dark' != $options['color_scheme']) {
		wp_enqueue_style('rock-star-' . $options['color_scheme'], trailingslashit(esc_url(get_template_directory_uri())) . 'css/colors/' . $options['color_scheme'] . '.css', array(), null);
	}

	wp_enqueue_script('rock-star-navigation', trailingslashit(esc_url(get_template_directory_uri())) . 'js/navigation.min.js', array(), '20120206', true);

	wp_enqueue_script('rock-star-skip-link-focus-fix', trailingslashit(esc_url(get_template_directory_uri())) . 'js/skip-link-focus-fix.min.js', array(), '20130115', true);

	/**
	 * Adds JavaScript to pages with the comment form to support
	 * sites with threaded comments (when in use).
	 */
	if (is_singular() && comments_open() && get_option('thread_comments')) {
		wp_enqueue_script('comment-reply');
	}

	/**
	 * Loads up fit vids
	 */
	if ($options['enable_fitvid']) {
		wp_enqueue_script('jquery-fitvids', trailingslashit(esc_url(get_template_directory_uri())) . 'js/fitvids.min.js', array('jquery'), '1.1', true);
	}

	/**
	 * Loads up Cycle JS
	 */
	if ($options['featured_slider_option'] != 'disabled' || $options['news_ticker_option'] != 'disabled') {
		wp_register_script('jquery-cycle2', trailingslashit(esc_url(get_template_directory_uri())) . 'js/jquery.cycle/jquery.cycle2.min.js', array('jquery'), '2.1.5', true);

		$transition_effects = array(
			$options['featured_slide_transition_effect'],
			$options['news_ticker_transition_effect']
		);

		/**
		 * Condition checks for additional slider transition plugins
		 */
		// Scroll Vertical transition plugin addition
		if (in_array('scrollVert', $transition_effects)) {
			wp_enqueue_script('jquery-cycle2-scrollVert', trailingslashit(esc_url(get_template_directory_uri())) . 'js/jquery.cycle/jquery.cycle2.scrollVert.min.js', array('jquery-cycle2'), '20140128', true);
		}

		// Flip transition plugin addition
		if (in_array('flipHorz', $transition_effects) || in_array('flipVert', $transition_effects)) {
			wp_enqueue_script('jquery-cycle2-flip', trailingslashit(esc_url(get_template_directory_uri())) . 'js/jquery.cycle/jquery.cycle2.flip.min.js', array('jquery-cycle2'), '20140128', true);
		}

		// Shuffle transition plugin addition
		if (in_array('tileSlide', $transition_effects) || in_array('tileBlind', $transition_effects)) {
			wp_enqueue_script('jquery-cycle2-tile', trailingslashit(esc_url(get_template_directory_uri())) . 'js/jquery.cycle/jquery.cycle2.tile.min.js', array('jquery-cycle2'), '20140128', true);
		}

		//Load jquery cycle alone if no plugin is required
		if (!(in_array('scrollVert', $transition_effects) || in_array('flipHorz', $transition_effects) || in_array('flipVert', $transition_effects) || in_array('tileSlide', $transition_effects) || in_array('tileBlind', $transition_effects))) {
			wp_enqueue_script('jquery-cycle2');
		}
	}

	/**
	 * Loads up Scroll Up script
	 */
	if (! $options['disable_scrollup']) {
		wp_enqueue_script('rock-star-scrollup', trailingslashit(esc_url(get_template_directory_uri())) . 'js/scrollup.min.js', array('jquery'), '20072014', true);
	}

	/**
	 * Enqueue custom script for Rock Star.
	 */
	wp_enqueue_script('rock-star-custom-scripts', trailingslashit(esc_url(get_template_directory_uri())) . 'js/custom-scripts.min.js', array('jquery'), null);

	wp_localize_script('rock-star-custom-scripts', 'screenReaderText', array(
		'expand'   => __('expand child menu', 'rock-star'),
		'collapse' => __('collapse child menu', 'rock-star'),
	));
}
add_action('wp_enqueue_scripts', 'rock_star_scripts');


/**
 * Register Google fonts.
 *
 */
function rock_star_fonts_url()
{
	$fonts_url = '';

	/* Translators: If there are characters in your language that are not
	* supported by Montserrat, translate this to 'off'. Do not translate
	* into your own language.
	*/
	$courgette = _x('on', 'Courgette font: on or off', 'rock-star');

	if ('off' !== $courgette) {
		$fonts_url = 'https://fonts.googleapis.com/css?family=Courgette';
	}
	// Load google font locally.
	require_once get_theme_file_path('inc/wptt-webfont-loader.php');

	return esc_url_raw(wptt_get_webfont_url($fonts_url));
}


/**
 * Enqueue scripts and styles for Metaboxes
 * @uses wp_register_script, wp_enqueue_script, and  wp_enqueue_style
 *
 * @action admin_print_scripts-post-new, admin_print_scripts-post, admin_print_scripts-page-new, admin_print_scripts-page
 *
 * @since Rock Star 0.3
 */

/**
 * Default Options.
 */
require trailingslashit(get_template_directory()) . 'inc/default-options.php';

/**
 * Custom Header.
 */
require trailingslashit(get_template_directory()) . 'inc/custom-header.php';


/**
 * Structure for Rock Star
 */
require trailingslashit(get_template_directory()) . 'inc/structure.php';


/**
 * Customizer additions.
 */
require trailingslashit(get_template_directory()) . 'inc/customizer-includes/customizer.php';


/**
 * Custom Menus
 */
require trailingslashit(get_template_directory()) . 'inc/menus.php';


/**
 * Load Slider file.
 */
require trailingslashit(get_template_directory()) . 'inc/featured-slider.php';


/**
 * Load Featured Content.
 */
require trailingslashit(get_template_directory()) . 'inc/featured-content.php';


/**
 * Load News Ticker
 */
require trailingslashit(get_template_directory()) . 'inc/news-ticker.php';


/**
 * Load Breadcrumb file.
 */
require trailingslashit(get_template_directory()) . 'inc/breadcrumb.php';


/**
 * Load Widgets and Sidebars
 */
require trailingslashit(get_template_directory()) . 'inc/widgets/widgets.php';


/**
 * Load Social Icons
 */
require trailingslashit(get_template_directory()) . 'inc/social-icons.php';


/**
 * Load Metaboxes
 */
require trailingslashit(get_template_directory()) . 'inc/metabox.php';

/**
 * Load JSON_LD Breadcrumb file.
 */
require trailingslashit(get_template_directory()) . 'inc/json-ld-schema.php';


/**
 * Returns the options array for Rock Star.
 * @uses  get_theme_mod
 *
 * @since Rock Star 0.3
 */
function rock_star_get_theme_options()
{
	$default_options = rock_star_get_default_theme_options();

	return array_merge($default_options, get_theme_mod('rock_star_theme_options', $default_options));
}


/**
 * Flush out all transients
 *
 * @uses delete_transient
 *
 * @action customize_save, rock_star_customize_preview (see rock_star_customizer function: rock_star_customize_preview)
 *
 * @since Rock Star 0.3
 */
function rock_star_flush_transients()
{
	delete_transient('rock_star_featured_content');

	delete_transient('rock_star_news_ticker');

	delete_transient('rock_star_featured_slider');

	delete_transient('rock_star_custom_css');

	delete_transient('rock_star_footer_content');

	delete_transient('rock_star_featured_image');

	delete_transient('rock_star_social_icons');

	delete_transient('all_the_cool_cats');

	//Add Rock Star default themes if there is no values
	if (!get_theme_mod('rock_star_theme_options')) {
		set_theme_mod('rock_star_theme_options', rock_star_get_default_theme_options());
	}
}
add_action('customize_save', 'rock_star_flush_transients');

/**
 * Flush out category transients
 *
 * @uses delete_transient
 *
 * @action edit_category
 *
 * @since Rock Star 0.3
 */
function rock_star_flush_category_transients()
{
	delete_transient('all_the_cool_cats');
}
add_action('edit_category', 'rock_star_flush_category_transients');


/**
 * Flush out post related transients
 *
 * @uses delete_transient
 *
 * @action save_post
 *
 * @since Rock Star 0.3
 */
function rock_star_flush_post_transients()
{
	delete_transient('rock_star_featured_content');

	delete_transient('rock_star_news_ticker');

	delete_transient('rock_star_featured_slider');

	delete_transient('rock_star_featured_image');

	delete_transient('all_the_cool_cats');
}
add_action('save_post', 'rock_star_flush_post_transients');


if (! function_exists('rock_star_custom_css')) :
	/**
	 * Enqueue Custon CSS
	 *
	 * @uses  set_transient, wp_head, wp_enqueue_style
	 *
	 * @action wp_enqueue_scripts
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_custom_css()
	{
		//rock_star_flush_transients();
		$options  = rock_star_get_theme_options();
		$defaults = rock_star_get_default_theme_options();

		if (! $custom_css = get_transient('rock_star_custom_css')) {
			$custom_css = '';

			$text_color = get_header_textcolor();

			if ('blank' == $text_color) {
				$custom_css	.=  ".site-title a, .site-description { position: absolute !important; clip: rect(1px 1px 1px 1px); clip: rect(1px, 1px, 1px, 1px); }" . "\n";
			} elseif (get_theme_support('custom-header', 'default-text-color') !== $text_color) {
				$custom_css	.=  ".site-title a, .site-description { color: #" .  $text_color . "; }" . "\n";
			}

			// Featured Content Background Image Options
			if ('' == $options['featured_content_background_image']) {
				//Remove Background Image
				$custom_css .= "#featured-content { background-image: none; }";
			} elseif ($defaults['featured_content_background_image'] != $options['featured_content_background_image'] || $defaults['featured_content_background_display_position'] != $options['featured_content_background_display_position'] || $defaults['featured_content_background_repeat'] != $options['featured_content_background_repeat'] || $defaults['featured_content_background_attachment'] != $options['featured_content_background_attachment']) {

				$custom_css .= "#featured-content {" . "\n";
				if ($defaults['featured_content_background_image'] != $options['featured_content_background_image']) {
					$custom_css	.=  "background-image: url(\"" . esc_url($options['featured_content_background_image']) . "\");" . "\n";
				}

				if ($defaults['featured_content_background_display_position'] != $options['featured_content_background_display_position']) {
					$custom_css	.=  "background-position: center " . $options['featured_content_background_display_position'] . ";" . "\n";
				}

				if ($defaults['featured_content_background_repeat'] != $options['featured_content_background_repeat']) {
					$custom_css	.=  "background-repeat: " . $options['featured_content_background_repeat'] . ";\n";
					$custom_css	.=  "background-size: inherit;\n";
				}

				if ($defaults['featured_content_background_attachment'] != $options['featured_content_background_attachment']) {
					$custom_css	.=  "background-attachment: " . $options['featured_content_background_attachment'] . "\n";
				}
				$custom_css .= "}";
			}

			//Custom CSS Option
			if (!empty($options['custom_css'])) {

				if ('' != $custom_css) {
					// Just add a new line.
					$custom_css	.=  $custom_css . "\n";
				}
				$custom_css	.=  "/* Custom CSS from Custom CSS box */" . "\n" . $options['custom_css'] . "\n";
			}

			if ('' != $custom_css) {
				echo '<!-- refreshing cache -->' . "\n";

				$custom_css = '<!-- ' . get_bloginfo('name') . ' inline CSS Styles -->' . "\n" . '<style type="text/css" media="screen">' . "\n" . $custom_css;

				$custom_css .= '</style>' . "\n";
			}

			set_transient('rock_star_custom_css', htmlspecialchars_decode($custom_css), 86940);
		}

		echo $custom_css;
	}
endif; //rock_star_custom_css
add_action('wp_head', 'rock_star_custom_css', 101);


/**
 * Alter the query for the main loop in homepage
 *
 * @action pre_get_posts
 *
 * @since Rock Star 0.3
 */
function rock_star_alter_home($query)
{
	if ($query->is_main_query() && $query->is_home()) {
		$options 	= rock_star_get_theme_options();
		$cats 		= $options['front_page_category'];

		if (is_array($cats) && !in_array('0', $cats)) {
			$query->query_vars['category__in'] =  $cats;
		}
	}
}
add_action('pre_get_posts', 'rock_star_alter_home');


if (! function_exists('rock_star_content_nav')) :
	/**
	 * Display navigation to next/previous pages when applicable
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_content_nav($nav_id)
	{
		global $wp_query, $post;

		// Don't print empty markup on single pages if there's nowhere to navigate.
		if (is_single()) {
			$previous = (is_attachment()) ? get_post($post->post_parent) : get_adjacent_post(false, '', true);
			$next = get_adjacent_post(false, '', false);

			if (! $next && ! $previous)
				return;
		}

		// Don't print empty markup in archives if there's only one page.
		if ($wp_query->max_num_pages < 2 && (is_home() || is_archive() || is_search())) {
			return;
		}

		$options			= rock_star_get_theme_options();

		$pagination_type	= $options['pagination_type'];

		$nav_class = (is_single()) ? 'site-navigation post-navigation' : 'site-navigation paging-navigation';

		/**
		 * Check if navigation type is Jetpack Infinite Scroll and if it is enabled, else goto default pagination
		 * if it's active then disable pagination
		 */
		if (('infinite-scroll-click' == $pagination_type || 'infinite-scroll-scroll' == $pagination_type) && class_exists('Jetpack') && Jetpack::is_module_active('infinite-scroll')) {
			return false;
		}

?>
		<nav class="navigation post-navigation" role="navigation" id="<?php echo esc_attr($nav_id); ?>">
			<div class="nav-links">
				<h3 class="screen-reader-text"><?php esc_html_e('Post navigation', 'rock-star'); ?></h3>
				<?php
				/**
				 * Check if navigation type is numeric and if Wp-PageNavi Plugin is enabled
				 */
				if ('numeric' == $pagination_type) {
					if (function_exists('wp_pagenavi')) {
						wp_pagenavi();
					} else {
						the_posts_pagination(array(
							'prev_text'          => esc_html__('Previous page', 'rock-star'),
							'next_text'          => esc_html__('Next page', 'rock-star'),
							'before_page_number' => '<span class="meta-nav screen-reader-text">' . esc_html__('Page', 'rock-star') . ' </span>',
						));
					}
				} else { ?>
					<div class="nav-previous"><?php next_posts_link(__('<span class="meta-nav">&larr;</span> Older posts', 'rock-star')); ?></div>
					<div class="nav-next"><?php previous_posts_link(__('Newer posts <span class="meta-nav">&rarr;</span>', 'rock-star')); ?></div>
				<?php
				} ?>
			</div>
		</nav><!-- #nav -->
		<?php
	}
endif; // rock_star_content_nav


if (! function_exists('rock_star_comment')) :
	/**
	 * Template for comments and pingbacks.
	 *
	 * Used as a callback by wp_list_comments() for displaying the comments.
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_comment($comment, $args, $depth)
	{
		if ('pingback' == $comment->comment_type || 'trackback' == $comment->comment_type) : ?>

			<li id="comment-<?php comment_ID(); ?>" <?php comment_class(); ?>>
				<div class="comment-body">
					<?php esc_html_e('Pingback:', 'rock-star'); ?> <?php comment_author_link(); ?> <?php edit_comment_link(esc_html__('Edit', 'rock-star'), '<span class="edit-link">', '</span>'); ?>
				</div>

			<?php else : ?>

			<li id="comment-<?php comment_ID(); ?>" <?php comment_class(empty($args['has_children']) ? '' : 'parent'); ?>>
				<article id="div-comment-<?php comment_ID(); ?>" class="comment-body">
					<footer class="comment-meta">
						<div class="comment-author vcard">
							<?php if (0 != $args['avatar_size']) echo get_avatar($comment, $args['avatar_size']); ?>
							<?php printf(__('%s <span class="says">says:</span>', 'rock-star'), sprintf('<cite class="fn">%s</cite>', get_comment_author_link())); ?>
						</div><!-- .comment-author -->

						<div class="comment-metadata">
							<a href="<?php echo esc_url(get_comment_link($comment->comment_ID)); ?>">
								<time datetime="<?php comment_time('c'); ?>">
									<?php printf(_x('%1$s at %2$s', '1: date, 2: time', 'rock-star'), get_comment_date(), get_comment_time()); ?>
								</time>
							</a>
							<?php edit_comment_link(esc_html__('Edit', 'rock-star'), '<span class="edit-link">', '</span>'); ?>
						</div><!-- .comment-metadata -->

						<?php if ('0' == $comment->comment_approved) : ?>
							<p class="comment-awaiting-moderation"><?php esc_html_e('Your comment is awaiting moderation.', 'rock-star'); ?></p>
						<?php endif; ?>
					</footer><!-- .comment-meta -->

					<div class="comment-content">
						<?php comment_text(); ?>
					</div><!-- .comment-content -->

					<?php
					comment_reply_link(wp_parse_args($args, array(
						'add_below' => 'div-comment',
						'depth'     => $depth,
						'max_depth' => $args['max_depth'],
						'before'    => '<div class="reply">',
						'after'     => '</div>',
					)));
					?>
				</article><!-- .comment-body -->

			<?php
		endif;
	}
endif; // rock_star_comment()


if (! function_exists('rock_star_the_attached_image')) :
	/**
	 * Prints the attached image with a link to the next attached image.
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_the_attached_image()
	{
		$post                = get_post();
		$attachment_size     = apply_filters('rock_star_attachment_size', array(1200, 1200));
		$next_attachment_url = wp_get_attachment_url();

		/**
		 * Grab the IDs of all the image attachments in a gallery so we can get the
		 * URL of the next adjacent image in a gallery, or the first image (if
		 * we're looking at the last image in a gallery), or, in a gallery of one,
		 * just the link to that image file.
		 */
		$attachment_ids = get_posts(array(
			'post_parent'    => $post->post_parent,
			'fields'         => 'ids',
			'numberposts'    => 1,
			'post_status'    => 'inherit',
			'post_type'      => 'attachment',
			'post_mime_type' => 'image',
			'order'          => 'ASC',
			'orderby'        => 'menu_order ID'
		));

		// If there is more than 1 attachment in a gallery...
		if (count($attachment_ids) > 1) {
			foreach ($attachment_ids as $attachment_id) {
				if ($attachment_id == $post->ID) {
					$next_id = current($attachment_ids);
					break;
				}
			}

			// get the URL of the next image attachment...
			if ($next_id)
				$next_attachment_url = get_attachment_link($next_id);

			// or get the URL of the first image attachment.
			else
				$next_attachment_url = get_attachment_link(array_shift($attachment_ids));
		}

		printf(
			'<a href="%1$s" title="%2$s" rel="attachment">%3$s</a>',
			esc_url($next_attachment_url),
			the_title_attribute('echo=0'),
			wp_get_attachment_image($post->ID, $attachment_size)
		);
	}
endif; //rock_star_the_attached_image


if (! function_exists('rock_star_entry_meta')) :
	/**
	 * Prints HTML with meta information for the current post-date/time and author.
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_entry_meta()
	{
		echo '<p class="entry-meta">';

		$time_string = '<time datetime="%1$s" class="entry-date published updated">%2$s</time>';

		if (get_the_time('U') !== get_the_modified_time('U')) {
			$time_string = '<time datetime="%1$s" class="entry-date published">%2$s</time><time datetime="%1$s" class="updated">%2$s</time>';
		}

		$time_string = sprintf(
			$time_string,
			esc_attr(get_the_date('c')),
			esc_html(get_the_date()),
			esc_attr(get_the_modified_date('c')),
			esc_html(get_the_modified_date())
		);

		printf(
			'<span class="posted-on">%1$s<a href="%2$s" rel="bookmark">%3$s</a></span>',
			sprintf(_x('<span class="screen-reader-text">Posted on</span>', 'Used before publish date.', 'rock-star')),
			esc_url(get_permalink()),
			$time_string
		);

		if (is_singular() || is_multi_author()) {
			printf(
				'<span class="byline"><span class="author vcard">%1$s<a class="url fn n" href="%2$s">%3$s</a></span></span>',
				sprintf(_x('<span class="screen-reader-text">Author</span>', 'Used before post author name.', 'rock-star')),
				esc_url(get_author_posts_url(get_the_author_meta('ID'))),
				esc_html(get_the_author())
			);
		}

		if (! post_password_required() && (comments_open() || '0' != get_comments_number())) {
			echo '<span class="comments-link">';
			comments_popup_link(esc_html__('Leave a comment', 'rock-star'), esc_html__('1 Comment', 'rock-star'), esc_html__('% Comments', 'rock-star'));
			echo '</span>';
		}

		edit_post_link(esc_html__('Edit', 'rock-star'), '<span class="edit-link">', '</span>');

		echo '</p><!-- .entry-meta -->';
	}
endif; //rock_star_entry_meta


if (! function_exists('rock_star_tag_category')) :
	/**
	 * Prints HTML with meta information for the categories, tags.
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_tag_category()
	{
		echo '<p class="entry-meta">';

		if ('post' == get_post_type()) {
			$categories_list = get_the_category_list(_x(', ', 'Used between list items, there is a space after the comma.', 'rock-star'));
			if ($categories_list && rock_star_categorized_blog()) {
				printf(
					'<span class="cat-links">%1$s%2$s</span>',
					sprintf(_x('<span class="screen-reader-text">Categories</span>', 'Used before category names.', 'rock-star')),
					$categories_list
				);
			}

			$tags_list = get_the_tag_list('', _x(', ', 'Used between list items, there is a space after the comma.', 'rock-star'));
			if ($tags_list) {
				printf(
					'<span class="tags-links">%1$s%2$s</span>',
					sprintf(_x('<span class="screen-reader-text">Tags</span>', 'Used before tag names.', 'rock-star')),
					$tags_list
				);
			}
		}

		echo '</p><!-- .entry-meta -->';
	}
endif; //rock_star_tag_category


if (! function_exists('rock_star_get_highlight_meta')) :
	/**
	 * Returns HTML with meta information for the categories, tags, date and author.
	 *
	 * @param [boolean] $hide_category Adds screen-reader-text class to category meta if true
	 * @param [boolean] $hide_tags Adds screen-reader-text class to tag meta if true
	 * @param [boolean] $hide_posted_by Adds screen-reader-text class to date meta if true
	 * @param [boolean] $hide_author Adds screen-reader-text class to author meta if true
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_get_highlight_meta($hide_category = false, $hide_tags = false, $hide_posted_by = false, $hide_author = false)
	{
		$output = '<p class="entry-meta">';

		if ('post' == get_post_type()) {

			$class = $hide_category ? 'screen-reader-text' : '';

			$categories_list = get_the_category_list(_x(', ', 'Used between list items, there is a space after the comma.', 'rock-star'));
			if ($categories_list && rock_star_categorized_blog()) {
				$output .= sprintf(
					'<span class="cat-links ' . $class . '">%1$s%2$s</span>',
					sprintf(_x('<span class="screen-reader-text">Categories</span>', 'Used before category names.', 'rock-star')),
					$categories_list
				);
			}

			$class = $hide_tags ? 'screen-reader-text' : '';

			$tags_list = get_the_tag_list('', _x(', ', 'Used between list items, there is a space after the comma.', 'rock-star'));
			if ($tags_list) {
				$output .= sprintf(
					'<span class="tags-links ' . $class . '">%1$s%2$s</span>',
					sprintf(_x('<span class="screen-reader-text">Tags</span>', 'Used before tag names.', 'rock-star')),
					$tags_list
				);
			}

			$time_string = '<time class="entry-date published updated" datetime="%1$s">%2$s</time>';

			if (get_the_time('U') !== get_the_modified_time('U')) {
				$time_string = '<time class="entry-date published" datetime="%1$s">%2$s</time><time class="updated" datetime="%3$s">%4$s</time>';
			}

			$time_string = sprintf(
				$time_string,
				esc_attr(get_the_date('c')),
				esc_html(get_the_date()),
				esc_attr(get_the_modified_date('c')),
				esc_html(get_the_modified_date())
			);

			$class = $hide_posted_by ? 'screen-reader-text' : '';

			$output .= sprintf(
				'<span class="posted-on ' . $class . '">%1$s<a href="%2$s" rel="bookmark">%3$s</a></span>',
				sprintf(_x('<span class="screen-reader-text">Posted on</span>', 'Used before publish date.', 'rock-star')),
				esc_url(get_permalink()),
				$time_string
			);

			if (is_singular() || is_multi_author()) {
				$class = $hide_author ? 'screen-reader-text' : '';

				$output .= sprintf(
					'<span class="byline ' . $class . '"><span class="author vcard">%1$s<a class="url fn n" href="%2$s">%3$s</a></span></span>',
					sprintf(_x('<span class="screen-reader-text">Author</span>', 'Used before post author name.', 'rock-star')),
					esc_url(get_author_posts_url(get_the_author_meta('ID'))),
					esc_html(get_the_author())
				);
			}
		}

		$output .= '</p><!-- .entry-meta -->';

		return $output;
	}
endif; //rock_star_get_highlight_meta


/**
 * Returns true if a blog has more than 1 category
 *
 * @since Rock Star 0.3
 */
function rock_star_categorized_blog()
{
	if (false === ($all_the_cool_cats = get_transient('all_the_cool_cats'))) {
		// Create an array of all the categories that are attached to posts
		$all_the_cool_cats = get_categories(array(
			'hide_empty' => 1,
		));

		// Count the number of categories that are attached to the posts
		$all_the_cool_cats = count($all_the_cool_cats);

		set_transient('all_the_cool_cats', $all_the_cool_cats);
	}

	if ('1' != $all_the_cool_cats) {
		// This blog has more than 1 category so rock_star_categorized_blog should return true
		return true;
	} else {
		// This blog has only 1 category so rock_star_categorized_blog should return false
		return false;
	}
}


/**
 * Get our wp_nav_menu() fallback, wp_page_menu(), to show a home link.
 *
 * @since Rock Star 0.3
 */
function rock_star_page_menu_args($args)
{
	$args['show_home'] = true;
	return $args;
}
add_filter('wp_page_menu_args', 'rock_star_page_menu_args');


/**
 * Filter in a link to a content ID attribute for the next/previous image links on image attachment pages
 *
 * @since Rock Star 0.3
 */
function rock_star_enhanced_image_navigation($url, $id)
{
	if (! is_attachment() && ! wp_attachment_is_image($id))
		return $url;

	$image = get_post($id);
	if (! empty($image->post_parent) && $image->post_parent != $id)
		$url .= '#main';

	return $url;
}
add_filter('attachment_link', 'rock_star_enhanced_image_navigation', 10, 2);


if (! function_exists('rock_star_excerpt_length')) :
	/**
	 * Sets the post excerpt length to n words.
	 *
	 * function tied to the excerpt_length filter hook.
	 * @uses filter excerpt_length
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_excerpt_length($length)
	{
		// Getting data from Customizer Options
		$options	= rock_star_get_theme_options();
		$length	= $options['excerpt_length'];
		return $length;
	}
endif; //rock_star_excerpt_length
add_filter('excerpt_length', 'rock_star_excerpt_length');


if (! function_exists('rock_star_continue_reading')) :
	/**
	 * Returns a "Custom Continue Reading" link for excerpts
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_continue_reading()
	{
		// Getting data from Customizer Options
		$options		=	rock_star_get_theme_options();
		$more_tag_text	= $options['excerpt_more_text'];

		return ' <span class="read-more"><a class="more-link btn btn-transparent" href="' . esc_url(get_permalink()) . '">' .  $more_tag_text . '</a></span>';
	}
endif; //rock_star_continue_reading
add_filter('excerpt_more', 'rock_star_continue_reading');


if (! function_exists('rock_star_excerpt_more')) :
	/**
	 * Replaces "[...]" (appended to automatically generated excerpts) with rock_star_continue_reading().
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_excerpt_more($more)
	{
		return rock_star_continue_reading();
	}
endif; //rock_star_excerpt_more
add_filter('excerpt_more', 'rock_star_excerpt_more');


if (! function_exists('rock_star_custom_excerpt')) :
	/**
	 * Adds Continue Reading link to more tag excerpts.
	 *
	 * function tied to the get_the_excerpt filter hook.
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_custom_excerpt($output)
	{
		if (has_excerpt() && ! is_attachment()) {
			$output .= rock_star_continue_reading();
		}
		return $output;
	}
endif; //rock_star_custom_excerpt
add_filter('get_the_excerpt', 'rock_star_custom_excerpt');


if (! function_exists('rock_star_more_link')) :
	/**
	 * Replacing Continue Reading link to the_content more.
	 *
	 * function tied to the the_content_more_link filter hook.
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_more_link($more_link, $more_link_text)
	{
		$options		=	rock_star_get_theme_options();
		$more_tag_text	= $options['excerpt_more_text'];

		return str_replace($more_link_text, $more_tag_text, $more_link);
	}
endif; //rock_star_more_link
add_filter('the_content_more_link', 'rock_star_more_link', 10, 2);


if (! function_exists('rock_star_body_classes')) :
	/**
	 * Adds Rock Star layout classes to the array of body classes.
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_body_classes($classes)
	{
		global $wp_query;
		$options = rock_star_get_theme_options();

		// Adds a class of group-blog to blogs with more than 1 published author
		if (is_multi_author()) {
			$classes[] = 'group-blog';
		}

		$layout = rock_star_get_theme_layout();

		switch ($layout) {
			case 'left-sidebar':
				$classes[] = 'layout-two-columns content-right';
				break;

			case 'right-sidebar':
				$classes[] = 'layout-two-columns content-left';
				break;

			case 'no-sidebar-full-width':
				$classes[] = 'layout-one-column no-sidebar full-width';
				break;
		}

		$current_content_layout = $options['content_layout'];
		if ("" != $current_content_layout) {
			$classes[] = esc_attr($current_content_layout);
		}

		$page_id        = $wp_query->get_queried_object_id();
		$page_for_posts = get_option('page_for_posts');

		//Check if slider is inactive
		$enable_slider   = $options['featured_slider_option'];
		$slider_disabled = true;

		if ('entire-site' == $enable_slider || ((is_front_page() || (is_home() && $page_for_posts != $page_id)) && 'homepage' == $enable_slider)) {
			$slider_disabled = false;
		}

		//Check if header image is enabled
		$header_image_disabled = !rock_star_featured_image();

		if ($slider_disabled && $header_image_disabled) {
			//Add class if slider and header image is  disabled
			$classes[] = 'header-bg';
		}

		//Check if news-ticker is inactive
		$enable_news_ticker = $options['news_ticker_option'];

		if ('entire-site' == $enable_news_ticker || ((is_front_page() || (is_home() && $page_for_posts != $page_id)) && 'homepage' == $enable_news_ticker)) {
			$classes[] = 'news-ticker-' . $options['news_ticker_position'];
		}


		$classes = apply_filters('rock_star_body_classes', $classes);

		return $classes;
	}
endif; //rock_star_body_classes
add_filter('body_class', 'rock_star_body_classes');


/**
 * Count the number of footer sidebars to enable dynamic classes for the footer
 *
 * @since Rock Star 0.3
 */
function rock_star_footer_sidebar_class()
{
	$count = 0;

	if (is_active_sidebar('footer-1'))
		$count++;

	if (is_active_sidebar('footer-2'))
		$count++;

	if (is_active_sidebar('footer-3'))
		$count++;

	if (is_active_sidebar('footer-4'))
		$count++;

	$class = '';

	switch ($count) {
		case '1':
			$class = 'widget-area one';
			break;
		case '2':
			$class = 'widget-area two';
			break;
		case '3':
			$class = 'widget-area three';
			break;
		case '4':
			$class = 'widget-area four';
			break;
	}

	if ($class)
		echo 'class="' . $class . '"';
}


if (! function_exists('rock_star_post_classes')) :
	/**
	 * Adds Rock Star post classes to the array of post classes.
	 * used for supporting different content layouts
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_post_classes($classes)
	{
		//Getting Ready to load data from Theme Options Panel
		$options = rock_star_get_theme_options();

		$contentlayout = $options['content_layout'];

		if (is_archive() || is_home()) {
			$classes[] = esc_attr($contentlayout);
		}

		return $classes;
	}
endif; //rock_star_post_classes
add_filter('post_class', 'rock_star_post_classes');

if (! function_exists('rock_star_get_theme_layout')) :
	/**
	 * Returns Theme Layout prioritizing the meta box layouts
	 *
	 * @uses  get_theme_mod
	 *
	 * @action wp_head
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_get_theme_layout()
	{
		$id = '';

		global $post, $wp_query;

		// Front page displays in Reading Settings
		$page_on_front  = get_option('page_on_front');
		$page_for_posts = get_option('page_for_posts');

		// Get Page ID outside Loop
		$page_id = $wp_query->get_queried_object_id();

		// Blog Page or Front Page setting in Reading Settings
		if ($page_id == $page_for_posts || $page_id == $page_on_front) {
			$id = $page_id;
		} elseif (is_singular()) {
			if (is_attachment()) {
				$id = $post->post_parent;
			} else {
				$id = $post->ID;
			}
		}

		//Get appropriate metabox value of layout
		if ('' != $id) {
			$layout = get_post_meta($id, 'rock-star-layout-option', true);
		} else {
			$layout = 'default';
		}

		//Load options data
		$options = rock_star_get_theme_options();

		//check empty and load default
		if (empty($layout) || 'default' == $layout) {
			if (is_single() || is_page()) {
				$layout = $options['single_page_post_layout'];
			} else {
				$layout = $options['theme_layout'];
			}
		}

		return $layout;
	}
endif; //rock_star_get_theme_layout


if (! function_exists('rock_star_archive_content_image')) :
	/**
	 * Template for Featured Image in Archive Content
	 *
	 * To override this in a child theme
	 * simply create your own rock_star_archive_content_image(), and that function will be used instead.
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_archive_content_image()
	{
		$options        = rock_star_get_theme_options();
		$content_layout = $options['content_layout'];

		if (has_post_thumbnail() && 'full-content' != $content_layout) { ?>
				<figure class="featured-image">
					<a rel="bookmark" href="<?php the_permalink(); ?>">
						<?php the_post_thumbnail(); ?>
					</a>
				</figure>
			<?php
		}
	}
endif; //rock_star_archive_content_image
add_action('rock_star_before_entry_container', 'rock_star_archive_content_image', 10);


if (! function_exists('rock_star_single_content_image')) :
	/**
	 * Template for Featured Image in Single Post
	 *
	 * To override this in a child theme
	 * simply create your own rock_star_single_content_image(), and that function will be used instead.
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_single_content_image()
	{
		global $post, $wp_query;

		// Get Page ID outside Loop
		$page_id = $wp_query->get_queried_object_id();
		if ($post) {
			if (is_attachment()) {
				$parent = $post->post_parent;
				$individual_featured_image = get_post_meta($parent, 'rock-star-featured-image', true);
			} else {
				$individual_featured_image = get_post_meta($page_id, 'rock-star-featured-image', true);
			}
		}

		if (empty($individual_featured_image) || (!is_page() && !is_single())) {
			$individual_featured_image = 'default';
		}

		// Getting data from Theme Options
		$options = rock_star_get_theme_options();

		$featured_image = $options['single_post_image_size'];

		if (('disable' == $individual_featured_image  || '' == get_the_post_thumbnail() || ($individual_featured_image == 'default' && 'disabled' == $featured_image))) {
			echo '<!-- Page/Post Single Image Disabled or No Image set in Post Thumbnail -->';
			return false;
		} else {
			$class = '';

			if ('default' == $individual_featured_image) {
				$class = $featured_image;
			} else {
				$class = 'from-metabox ' . $individual_featured_image;
			}

			?>
				<figure class="featured-image <?php echo $class; ?>">
					<?php
					if ('large' == $individual_featured_image  || ($individual_featured_image == 'default' && 'large' == $featured_image)) {
						the_post_thumbnail('large');
					} elseif ('slider' == $individual_featured_image  || ($individual_featured_image == 'default' && 'slider-image-size' == $featured_image)) {
						the_post_thumbnail('rock-star-slider');
					} elseif ('featured' == $individual_featured_image  || ($individual_featured_image == 'default' && 'featured' == $featured_image)) {
						the_post_thumbnail('rock-star-featured');
					} else {
						the_post_thumbnail('full');
					} ?>
				</figure>
	<?php
		}
	}
endif; //rock_star_single_content_image
add_action('rock_star_before_post_container', 'rock_star_single_content_image', 10);
add_action('rock_star_before_page_container', 'rock_star_single_content_image', 10);


if (! function_exists('rock_star_get_comment_section')) :
	/**
	 * Comment Section
	 *
	 * @get comment setting from theme options and display comments sections accordingly
	 * @display comments_template
	 * @action rock_star_comment_section
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_get_comment_section()
	{
		if (comments_open() || '0' != get_comments_number()) {
			comments_template();
		}
	}
endif;
add_action('rock_star_comment_section', 'rock_star_get_comment_section', 10);


/**
 * Footer Text
 *
 * @get footer text from theme options and display them accordingly
 * @display footer_text
 * @action rock_star_footer
 *
 * @since Rock Star 0.3
 */
function rock_star_footer_content()
{
	//rock_star_flush_transients();
	if ((!$footer_content = get_transient('rock_star_footer_content'))) {
		$theme_data = wp_get_theme();
		$year       =  esc_attr(date_i18n(__('Y', 'rock-star')));
		$site_link  = '<a href="' . esc_url(home_url('/')) . '">' . esc_attr(get_bloginfo('name', 'display')) . '</a>';
		$privacy_policy = get_the_privacy_policy_link();

		$footer_content =  '
			<div id="site-generator" class="site-info" role="contentinfo">
				<div class="wrapper">
					<span>' . sprintf(_x('Copyright &copy; %1$s %2$s. All Rights Reserved. %3$s', '1: Year, 2: Site Title with home URL, 3: Privacy Policy Link', 'rock-star'), $year, $site_link, $privacy_policy) . ' &#124; ' . $theme_data->get('Name') . '&nbsp;' . esc_html__('by', 'rock-star') . '&nbsp;<a target="_blank" href="' . esc_url($theme_data->get('AuthorURI')) . '">' . esc_html($theme_data->get('Author')) . '</a>' . '</span>
				</div><!-- .wrapper -->
			</div><!-- .site-info -->
	    	';

		set_transient('rock_star_footer_content', $footer_content, 86940);
	}

	echo $footer_content;
}
add_action('rock_star_footer', 'rock_star_footer_content', 100);


/**
 * Return the first image in a post. Works inside a loop.
 * @param [integer] $post_id [Post or page id]
 * @param [string/array] $size Image size. Either a string keyword (thumbnail, medium, large or full) or a 2-item array representing width and height in pixels, e.g. array(32,32).
 * @param [string/array] $attr Query string or array of attributes.
 * @return [string] image html
 *
 * @since Rock Star 0.3
 */

function rock_star_get_first_image($postID, $size, $attr)
{
	ob_start();

	ob_end_clean();

	$image 	= '';

	$output = preg_match_all('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', get_post_field('post_content', $postID), $matches);

	if (isset($matches[1][0])) {
		//Get first image
		$first_img = $matches[1][0];

		return '<img class="wp-post-image" src="' . esc_url($first_img) . '">';
	}

	return false;
}


if (! function_exists('rock_star_scrollup')) {
	/**
	 * This function loads Scroll Up Navigation
	 *
	 * @action rock_star_footer action
	 * @uses set_transient and delete_transient
	 */
	function rock_star_scrollup()
	{
		// get the data value from theme options
		$options = rock_star_get_theme_options();

		if ($options['disable_scrollup']) {
			//bail if scroll up is disabled
			return;
		}

		echo '
		<div class="backtotop font-awesome fa-collapse">
			<span class="screen-reader-text">' . esc_html__('Scroll Up', 'rock-star') . '</span>
		</div><!-- .backtotop -->';
	}
}
add_action('rock_star_after', 'rock_star_scrollup', 10);


if (! function_exists('rock_star_page_post_meta')) :
	/**
	 * Post/Page Meta for Google Structure Data
	 */
	function rock_star_page_post_meta()
	{
		$author_url     = esc_url(get_author_posts_url(get_the_author_meta("ID")));

		$page_post_meta = '
			<span class="post-time">' . esc_html__('Posted on', 'rock-star') . '
				<time class="entry-date updated" datetime="' . esc_attr(get_the_date('c')) . '">' . esc_html(get_the_date()) . '</time>
			</span>

			<span class="post-author">
				' . esc_html__('By', 'rock-star') . '

				<span class="author vcard">
					<a class="url fn n" href="' . esc_url($author_url) . '" title="View all posts by ' . esc_attr(get_the_author()) . '" rel="author">' . esc_html(get_the_author()) . '</a>
					</span>
			</span>';

		return $page_post_meta;
	}
endif; //rock_star_page_post_meta


if (! function_exists('rock_star_truncate_phrase')) :
	/**
	 * Return a phrase shortened in length to a maximum number of characters.
	 *
	 * Result will be truncated at the last white space in the original string. In this function the word separator is a
	 * single space. Other white space characters (like newlines and tabs) are ignored.
	 *
	 * If the first `$max_characters` of the string does not contain a space character, an empty string will be returned.
	 *
	 * @since Rock Star 0.3
	 *
	 * @param string $text            A string to be shortened.
	 * @param integer $max_characters The maximum number of characters to return.
	 *
	 * @return string Truncated string
	 */
	function rock_star_truncate_phrase($text, $max_characters)
	{

		$text = trim($text);

		if (mb_strlen($text) > $max_characters) {
			//* Truncate $text to $max_characters + 1
			$text = mb_substr($text, 0, $max_characters + 1);

			//* Truncate to the last space in the truncated string
			$text = trim(mb_substr($text, 0, mb_strrpos($text, ' ')));
		}

		return $text;
	}
endif; //rock_star_truncate_phrase


if (! function_exists('rock_star_get_the_content_limit')) :
	/**
	 * Return content stripped down and limited content.
	 *
	 * Strips out tags and shortcodes, limits the output to `$max_char` characters, and appends an ellipsis and more link to the end.
	 *
	 * @since Rock Star 0.3
	 *
	 * @param integer $max_characters The maximum number of characters to return.
	 * @param string  $more_link_text Optional. Text of the more link. Default is "(more...)".
	 * @param bool    $stripteaser    Optional. Strip teaser content before the more text. Default is false.
	 *
	 * @return string Limited content.
	 */
	function rock_star_get_the_content_limit($max_characters, $more_link_text = '(more...)', $stripteaser = false)
	{

		$content = get_the_content('', $stripteaser);

		//* Strip tags and shortcodes so the content truncation count is done correctly
		$content = strip_tags(strip_shortcodes($content), apply_filters('get_the_content_limit_allowedtags', '<script>,<style>'));

		//* Remove inline styles / scripts
		$content = trim(preg_replace('#<(s(cript|tyle)).*?</\1>#si', '', $content));

		//* Truncate $content to $max_char
		$content = rock_star_truncate_phrase($content, $max_characters);

		//* More link?
		if ($more_link_text) {
			$link   = apply_filters('get_the_content_more_link', sprintf('<a href="%s" class="more-link">%s</a>', esc_url(get_permalink()), $more_link_text), $more_link_text);
			$output = sprintf('<p>%s %s</p>', $content, $link);
		} else {
			$output = sprintf('<p>%s</p>', $content);
			$link = '';
		}

		return apply_filters('rock_star_get_the_content_limit', $output, $content, $link, $max_characters);
	}
endif; //rock_star_get_the_content_limit


if (! function_exists('rock_star_post_navigation')) :
	/**
	 * Displays Single post Navigation
	 *
	 * @uses  the_post_navigation
	 *
	 * @action rock_star_after_post
	 *
	 * @since Rock Star 0.3
	 */
	function rock_star_post_navigation()
	{
		// Previous/next post navigation.
		the_post_navigation(array(
			'next_text' => '<span class="screen-reader-text">' . esc_html__('Next post:', 'rock-star') . '</span> ' .
				'<span class="post-title">%title</span> <span class="meta-nav"> &rarr;</span>',
			'prev_text' => '<span class="meta-nav" aria-hidden="true">&larr; </span>' .
				'<span class="screen-reader-text">' . esc_html__('Previous post:', 'rock-star') . '</span>' .
				'<span class="post-title">%title</span>',
		));
	}
endif; //rock_star_post_navigation
add_action('rock_star_after_post', 'rock_star_post_navigation', 10);


/**
 * Display Multiple Select type for and array of categories
 *
 * @param  [string] $name  [field name]
 * @param  [string] $id    [field_id]
 * @param  [array] $selected    [selected values]
 * @param  string $label [label of the field]
 */
function rock_star_dropdown_categories($name, $id, $selected, $label = '')
{
	$dropdown = wp_dropdown_categories(
		array(
			'name'             => $name,
			'echo'             => 0,
			'hide_empty'       => false,
			'show_option_none' => false,
			'hierarchical'     => 1,
		)
	);

	if ('' != $label) {
		echo '<label for="' . $id . '">
			' . $label . '
			</label>';
	}

	$dropdown = str_replace('<select', '<select multiple = "multiple" style = "height:120px; width: 100%" ', $dropdown);

	foreach ($selected as $selected) {
		$dropdown = str_replace('value="' . $selected . '"', 'value="' . $selected . '" selected="selected"', $dropdown);
	}

	echo $dropdown;

	echo '<span class="description">' . esc_html__('Hold down the Ctrl (windows) / Command (Mac) button to select multiple options.', 'rock-star') . '</span>';
}


/**
 * Return registered image sizes.
 *
 * Return a two-dimensional array of just the additionally registered image sizes, with width, height and crop sub-keys.
 *
 * @since 0.1.7
 *
 * @global array $_wp_additional_image_sizes Additionally registered image sizes.
 *
 * @return array Two-dimensional, with width, height and crop sub-keys.
 */
function rock_star_get_additional_image_sizes()
{
	global $_wp_additional_image_sizes;

	if ($_wp_additional_image_sizes)
		return $_wp_additional_image_sizes;

	return array();
}


/**
 * Migrate Custom CSS to WordPress core Custom CSS
 *
 * Runs if version number saved in theme_mod "custom_css_version" doesn't match current theme version.
 */
function rock_star_custom_css_migrate()
{
	$ver = get_theme_mod('custom_css_version', false);

	// Return if update has already been run
	if (version_compare($ver, '4.7') >= 0) {
		return;
	}

	if (function_exists('wp_update_custom_css_post')) {
		// Migrate any existing theme CSS to the core option added in WordPress 4.7.

		/**
		 * Get Theme Options Values
		 */
		$options = rock_star_get_theme_options();

		if ('' != $options['custom_css']) {
			$core_css = wp_get_custom_css(); // Preserve any CSS already added to the core option.
			$return   = wp_update_custom_css_post($core_css . $options['custom_css']);
			if (! is_wp_error($return)) {
				// Remove the old theme_mod, so that the CSS is stored in only one place moving forward.
				unset($options['custom_css']);
				set_theme_mod('rock_star_theme_options', $options);

				// Update to match custom_css_version so that script is not executed continously
				set_theme_mod('custom_css_version', '4.7');
			}
		}
	}
}
add_action('after_setup_theme', 'rock_star_custom_css_migrate');

if (! function_exists('rock_star_blocks_support')) :
	/**
	 * Create add default blocks support
	 */
	function rock_star_blocks_support()
	{
		// Add support for Block Styles.
		add_theme_support('wp-block-styles');

		// Add support for full and wide align images.
		add_theme_support('align-wide');

		// Add support for editor styles.
		add_theme_support('editor-styles');

		// Add support for responsive embeds.
		add_theme_support('responsive-embeds');

		// Add custom editor font sizes.
		add_theme_support(
			'editor-font-sizes',
			array(
				array(
					'name'      => esc_html__('Small', 'rock-star'),
					'shortName' => esc_html__('S', 'rock-star'),
					'size'      => 14,
					'slug'      => 'small',
				),
				array(
					'name'      => esc_html__('Normal', 'rock-star'),
					'shortName' => esc_html__('M', 'rock-star'),
					'size'      => 18,
					'slug'      => 'normal',
				),
				array(
					'name'      => esc_html__('Large', 'rock-star'),
					'shortName' => esc_html__('L', 'rock-star'),
					'size'      => 42,
					'slug'      => 'large',
				),
				array(
					'name'      => esc_html__('Huge', 'rock-star'),
					'shortName' => esc_html__('XL', 'rock-star'),
					'size'      => 54,
					'slug'      => 'huge',
				),
			)
		);

		// Add support for custom color scheme.
		add_theme_support('editor-color-palette', array(
			array(
				'name'  => esc_html__('White', 'rock-star'),
				'slug'  => 'white',
				'color' => '#ffffff',
			),
			array(
				'name'  => esc_html__('Black', 'rock-star'),
				'slug'  => 'black',
				'color' => '#111111',
			),
			array(
				'name'  => esc_html__('Gray', 'rock-star'),
				'slug'  => 'gray',
				'color' => '#f4f4f4',
			),
			array(
				'name'  => esc_html__('Blue', 'rock-star'),
				'slug'  => 'blue',
				'color' => '#21759b',
			),
			array(
				'name'  => esc_html__('Yellow', 'rock-star'),
				'slug'  => 'yellow',
				'color' => '#ffc300',
			),
			array(
				'name'  => esc_html__('Red', 'rock-star'),
				'slug'  => 'red',
				'color' => '#e8554e',
			),
		));
	}
	add_action('after_setup_theme', 'rock_star_blocks_support', 20);
endif; //rock_star_blocks_support

if (! function_exists('rock_star_add_blocks_style')) :
	/**
	 * Add Blocks Style
	 */
	function rock_star_add_blocks_style()
	{
		// Theme block stylesheet.
		wp_enqueue_style('rock-star-block-style', get_theme_file_uri('/css/blocks.css'), array('rock-star-style'), date('Ymd-Gis', filemtime(get_template_directory() . '/css/blocks.css')));
	}
	add_action('wp_enqueue_scripts', 'rock_star_add_blocks_style');
endif; //rock_star_add_blocks_style
