<?php
/**
 * Helper functions for the Responsive theme
 *
 * @package Responsive
 */

namespace Responsive\Extra;

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Set up theme defaults and register supported WordPress features.
 *
 * @return void
 */
function setup() {
	$n = function( $function ) {
		return __NAMESPACE__ . "\\$function";
	};

	add_action( 'widgets_init', $n( 'responsive_remove_recent_comments_style' ) );
	add_filter( 'wp_page_menu', $n( 'responsive_wp_page_menu' ) );
	add_filter( 'wp_nav_menu_items', $n( 'responsive_search_icon' ), 99, 2 );

	add_filter( 'gallery_style', $n( 'responsive_remove_gallery_css' ) );
	add_filter( 'get_the_excerpt', $n( 'responsive_custom_excerpt_more' ) );
	add_filter( 'excerpt_more', $n( 'responsive_auto_excerpt_more' ) );
	add_filter( 'excerpt_length', $n( 'responsive_excerpt_length' ) );

	add_filter( 'get_comments_number', $n( 'responsive_comment_count' ), 0 );

	add_filter( 'wp_list_categories', $n( 'responsive_category_rel_removal' ) );
	add_filter( 'the_category', $n( 'responsive_category_rel_removal' ) );

	if ( ! function_exists( 'responsive_title' ) && ! defined( 'AIOSEOP_VERSION' ) ) {
		add_filter( 'wp_title', $n( 'responsive_title' ), 10, 2 );
	}

}

/**
 * Helps file locations in child themes. If the file is not being overwritten by the child theme then
 * return the parent theme location of the file. Great for images.
 *
 * @param string $dir  directory.
 *
 * @return string complete uri
 */
function responsive_child_uri( $dir ) {
	if ( is_child_theme() ) {
		$directory = get_stylesheet_directory() . $dir;
		$test      = is_file( $directory );
		if ( is_file( $directory ) ) {
			$file = get_stylesheet_directory_uri() . $dir;
		} else {
			$file = get_template_directory_uri() . $dir;
		}
	} else {
		$file = get_template_directory_uri() . $dir;
	}

	return $file;
}

/**
 * This function removes WordPress generated category and tag atributes.
 * For W3C validation purposes only.
 *
 * @param string $output Output.
 */
function responsive_category_rel_removal( $output ) {
	$output = str_replace( ' rel="category tag"', '', $output );

	return $output;
}

/**
 * Filter 'get_comments_number'
 *
 * Filter 'get_comments_number' to display correct
 * number of comments (count only comments, not
 * trackbacks/pingbacks)
 *
 * @param int $count Number of comments.
 */
function responsive_comment_count( $count ) {
	if ( ! is_admin() ) {
		global $id;
		$comments         = get_comments( 'status=approve&post_id=' . $id );
		$comments_by_type = separate_comments( $comments );

		return count( $comments_by_type['comment'] );
	} else {
		return $count;
	}
}

/**
 * Pings Callback wp_list_comments()
 *
 * Callback function wp_list_comments() for.
 * Pings (Trackbacks/Pingbacks)
 *
 * @param string $comment Comment.
 */
function responsive_comment_list_pings( $comment ) {
	?>
	<li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>"><?php echo wp_kses_post( comment_author_link() ); ?></li>
	<?php
}

/**
 * Sets the post excerpt length to 40 words.
 * Adopted from Coraline
 *
 * @param  integer $length Length of excerpt.
 */
function responsive_excerpt_length( $length ) {
	return 40;
}

/**
 * Returns a "Read more" link for excerpts
 */
function responsive_read_more() {
	global $post;
	if ( is_object( $post ) ) {
		if ( 'product' !== $post->post_type ) {
			return '<div class="read-more"><a href="' . get_permalink() . '">' . __( 'Read more &#8250;', 'responsive' ) . '</a></div><!-- end of .read-more -->';
		}
	}
}

/**
 * Replaces "[...]" (appended to automatically generated excerpts) with an ellipsis and responsive_read_more_link().
 *
 * @param int $more More.
 */
function responsive_auto_excerpt_more( $more = 0 ) {
	return '<span class="ellipsis">&hellip;</span>';
}

/**
 * Adds a pretty "Read more" link to custom post excerpts.
 *
 * @param string $output Append read more text.
 */
function responsive_custom_excerpt_more( $output ) {
	if ( has_excerpt() && ! is_attachment() ) {
		$output .= responsive_read_more();
	}
	return $output;
}

/**
 * This function removes inline styles set by WordPress gallery.
 *
 * @param string $css Replace media gallary css.
 */
function responsive_remove_gallery_css( $css ) {
	return preg_replace( "#<style type='text/css'>(.*?)</style>#s", '', $css );
}

/**
 * This function removes default styles set by WordPress recent comments widget.
 */
function responsive_remove_recent_comments_style() {
	global $wp_widget_factory;
	if ( isset( $wp_widget_factory->widgets['WP_Widget_Recent_Comments'] ) ) {
		remove_action( 'wp_head', array( $wp_widget_factory->widgets['WP_Widget_Recent_Comments'], 'recent_comments_style' ) );
	}
}

/**
 * Filter for better SEO title.
 * Adopted from Twenty Twelve
 *
 * @param  [type] $title [description].
 * @param  [type] $sep   [description].
 * @return [type]        [description].
 * @see http://codex.wordpress.org/Plugin_API/Filter_Reference/wp_title
 */
function responsive_title( $title, $sep ) {
	global $page, $paged;

	if ( is_feed() ) {
		return $title;
	}

		// Add the site name.
		$title .= get_bloginfo( 'name' );

	// Add the site description for the home/front page.
	$site_description = get_bloginfo( 'description', 'display' );
	if ( $site_description && ( is_home() || is_front_page() ) ) {
		$title .= " $sep $site_description";
	}

	// Add a page number if necessary.
	if ( $paged >= 2 || $page >= 2 ) {
		$title .= " $sep " . sprintf( __( 'Page %s', 'responsive' ), max( $paged, $page ) );
	}

	return $title;
}

/**
 * This function removes .menu class from custom menus
 * in widgets only and fallback's on default widget lists
 * and assigns new unique class called .menu-widget
 *
 * Marko Heijnen Contribution
 */
class responsive_widget_menu_class {
	public function __construct() {
		add_action( 'widget_display_callback', array( $this, 'menu_different_class' ), 10, 2 );
	}

	public function menu_different_class( $settings, $widget ) {
		if ( $widget instanceof WP_Nav_Menu_Widget ) {
			add_filter( 'wp_nav_menu_args', array( $this, 'wp_nav_menu_args' ) );
		}

		return $settings;
	}

	/**
	 * Navigation Menu arguments
	 *
	 * @param array $args Arguments.
	 * @return mixed
	 */
	public function wp_nav_menu_args( $args ) {
		remove_filter( 'wp_nav_menu_args', array( $this, 'wp_nav_menu_args' ) );

		if ( 'menu' === $args['menu_class'] ) {
			$args['menu_class'] = apply_filters( 'responsive_menu_widget_class', 'menu-widget' );
		}

		return $args;
	}
}

$GLOBALS['nav_menu_widget_classname'] = new responsive_widget_menu_class();

/**
 * Removes div from wp_page_menu() and replace with ul.
 *
 * @param string $page_markup Page Markup.
 */
function responsive_wp_page_menu( $page_markup ) {
	preg_match( '/^<div class=\"([a-z0-9-_]+)\">/i', $page_markup, $matches );
	$divclass   = $matches[1];
	$replace    = array( '<div class="' . $divclass . '">', '</div>' );
	$new_markup = str_replace( $replace, '', $page_markup );
	$new_markup = preg_replace( '/^<ul>/i', '<ul class="' . $divclass . '">', $new_markup );

	return $new_markup;
}

/**
 * Adds Search icon to menu
 *
 * @param string $menu default menu.
 * @param array  $args check menu.
 */
function responsive_search_icon( $menu, $args ) {

	$search_icon = get_theme_mod( 'responsive_menu_last_item', 'none' );

	// Only used for the main menu.
	if ( 'header-menu' === $args->theme_location ) {
		if ( 'text-html' === $search_icon ) {
			$custom_html_content = get_theme_mod( 'responsive_text_html', 'Contact Us' );

			if ( ! empty( $custom_html_content ) ) {
				$menu .= '<li class="res-last-item res-custom-text-menu"><div class="res-custom-html">' . do_shortcode( wpautop( $custom_html_content ) ) . '</div></li>';
			}
		} elseif ( 'button' === $search_icon ) {
			$custom_button_text = get_theme_mod( 'responsive_menu_button_text', 'Call Now' );
			$custom_button_link = get_theme_mod( 'responsive_menu_button', 'https://cyberchimps.com' );

			$menu .= '<li class="res-last-item res-button-menu"><a href="' . esc_url( $custom_button_link ) . '" class="res-custom-button">' . esc_html( $custom_button_text ) . '</a></li>';

		}
	}
	return $menu;
}
