<?php
if( ! defined( 'ABSPATH' ) ) {  exit;  }    // Exit if accessed directly

/**
* File was added with version 4.3 and holds functions that are related to compressing/merging/enqueing scripts and styles
*
* @since 4.3
* @added_by Kriesi
*/


//reset merged assets generated by the asset manager
if( ! function_exists( 'avia_reset_merged_assets' ) )
{
	add_action( 'ava_after_theme_update', 'avia_reset_merged_assets', 100, 1 ); /*after theme update*/
	add_action( 'ava_after_import_demo_settings', 'avia_reset_merged_assets', 100, 1 ); /*after demo settings imoport*/
	add_action( 'avia_ajax_after_save_options_page', 'avia_reset_merged_assets', 100, 1 ); /*after options page saving*/

	function avia_reset_merged_assets( $options = false )
	{
		Avia_Builder()->asset_manager()->reset_db_asset_list();
	}
}


if( ! function_exists( 'av_asset_merging_settings' ) )
{
	/**
	 * Adjust the level of file merging in asset-manager.class.php by taking the backend options into account and filtering the file compression function
	 *
	 * @since 4.3
	 * @added_by Kriesi
	 * @param array $which_files
	 * @return array
	 */
	function av_asset_merging_settings( $which_files )
	{
		$css_merging = avia_get_option( 'merge_css', 'avia' );
		$js_merging  = avia_get_option( 'merge_js', 'avia' );

		//	in this case we change filename on register/enqueue
		if( 'minified_only' == $js_merging )
		{
			$js_merging = 'none';
		}

		if( av_count_untested_plugins() == 0 )
		{
			if( $css_merging == 'avia' )
			{
				$css_merging = 'all';
			}

			if( $js_merging == 'avia' )
			{
				$js_merging = 'all';
			}
		}

		$which_files['css'] = $css_merging;
		$which_files['js']  = $js_merging;

		return $which_files;
	}

	add_filter( 'avf_merge_assets', 'av_asset_merging_settings', 10, 1 );
}



if( ! function_exists( 'av_delete_asset_switch' ) )
{
	/**
	 * Changes if the theme deletes generated css and js files
	 *
	 * @since 4.3
	 * @added_by Kriesi
	 * @param bool $delete
	 * @return bool
	 */
	function av_delete_asset_switch( $delete )
	{
		$delete = avia_get_option( 'delete_assets_after_save', false );
		if( $delete === false || $delete == 'disabled' )
		{
			$delete = false;
		}
		else
		{
			$delete = true;
		}

		return $delete;
	}

	add_filter( 'avf_delete_assets', 'av_delete_asset_switch', 10, 1 );
}






if( ! function_exists( 'av_disable_emojis' ) )
{
	/**
	* Disable the emoji's. based on: https://kinsta.com/knowledgebase/disable-emojis-wordpress/
	*
	* @since 4.3
	* @added_by Kriesi
	*/
	function av_disable_emojis()
	{
		if( avia_get_option( 'disable_emoji' ) != 'disable_emoji' )
		{
			return false;
		}

		remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
		remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
		remove_action( 'wp_print_styles', 'print_emoji_styles' );
		remove_action( 'admin_print_styles', 'print_emoji_styles' );
		remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
		remove_filter( 'comment_text_rss', 'wp_staticize_emoji' );
		remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
		add_filter( 'tiny_mce_plugins', 'av_disable_emojis_tinymce' );
		add_filter( 'wp_resource_hints', 'av_disable_emojis_remove_dns_prefetch', 10, 2 );

		if( get_option('use_smilies') === '1' )
		{
			update_option( 'use_smilies', '0' );
		}
	}

	add_action( 'init', 'av_disable_emojis' );
}


if( ! function_exists( 'av_disable_emojis_tinymce' ) )
{
/**
 * Filter function used to remove the tinymce emoji plugin.
 *
 * @since 4.3
 * @added_by Kriesi
 * @param array $plugins
 * @return array Difference betwen the two arrays
 */

	function av_disable_emojis_tinymce( $plugins )
	{
		if ( is_array( $plugins ) )
		{
			return array_diff( $plugins, array( 'wpemoji' ) );
		}
		else
		{
			return array();
		}
	}
}

if( ! function_exists( 'av_disable_emojis_remove_dns_prefetch' ) )
{
	/**
	 * Remove emoji CDN hostname from DNS prefetching hints.
	 *
	 * @since 4.3
	 * @added_by Kriesi
	 * @param array $urls URLs to print for resource hints.
	 * @param string $relation_type The relation type the URLs are printed for.
	 * @return array Difference betwen the two arrays.
	 */
	function av_disable_emojis_remove_dns_prefetch( $urls, $relation_type )
	{
		if ( 'dns-prefetch' == $relation_type )
		{
			/** This filter is documented in wp-includes/formatting.php */
			$emoji_svg_url = apply_filters( 'emoji_svg_url', 'https://s.w.org/images/core/emoji/2/svg/' );

			$urls = array_diff( $urls, array( $emoji_svg_url ) );
		}

		return $urls;
	}
}



if( ! function_exists( 'av_disable_unused_assets' ) )
{
	/**
	* Disable unused assets based on option settings
	*
	* @since 4.3
	* @added_by Kriesi
	*/
	function av_disable_unused_assets( $disabled )
	{
		if( is_admin() )
		{
			return $disabled;
		}

		//	for preview we need to load all elements because we did not adjust used elements
		if( is_preview() )
		{
			return array();
		}

		//special use cases: audio and blog - they only can be disabled manually
		if( avia_get_option( 'disable_mediaelement' ) == 'disable_mediaelement' )
		{
			$disabled['av_audio'] = true;

			if( avia_get_option( 'disable_video' ) == 'disable_video' )
			{
				$disabled['av_video'] = true;
			}
		}

		if( avia_get_option( 'disable_blog' ) == 'disable_blog' )
		{
			$disabled['av_blog'] 			= true;
			$disabled['av_comments_list'] 	= true;
		}



		//auto disabling on
		$disabling_alb = avia_get_option( 'disable_alb_elements', 'auto' );

		if( 'auto' == $disabling_alb )
		{
			$elements = Avia_Builder()->element_manager()->get_elements_state( 'blog' );
			$may_be_disabled = Avia_Builder()->may_be_disabled_automatically;

			if( ! empty( $elements ) )
			{
				foreach( $elements as $key => $value )
				{
					if( empty( $value ) && in_array( $key, $may_be_disabled ) )
					{
						$disabled[ $key ] = true;
					}
				}
			}

			//check if the mailchimp widget is used. if so we do not disable that element
			if( is_active_widget( false, false, '\aviaFramework\widgets\avia_mailchimp_widget', true ) && isset( $disabled['av_mailchimp'] ) )
			{
				unset( $disabled['av_mailchimp'] );
			}

			//check if background video is used. if so we need the slideshow
			if( av_slideshow_required() )
			{
				unset( $disabled['av_slideshow'] );
			}
		}
		else if( 'manually' == $disabling_alb ) //manually disabling on
		{
			$options = avia_get_option();
			foreach( $options as $key => $option )
			{
				if( strpos( $key, 'av_alb_disable_' ) !== false )
				{
					$shortcode = str_replace( 'av_alb_disable_', '', $key );
					if( $option == $key )
					{
						$disabled[ $shortcode ] = true;
					}
				}
			}

		}

		//tabs can be necessary for the cookie bar setting
		if( avia_get_option( 'cookie_consent' ) == 'cookie_consent' )
		{
			$buttons = json_encode( avia_get_option( 'msg_bar_buttons', array() ) );
			if( strpos( $buttons, 'info_modal') !== false )
			{
				unset( $disabled['av_heading'] );
				unset( $disabled['av_hr'] );
				unset( $disabled['av_tab_container'] );
			}
		}

		//	tabs are needed in template-archive
		if( isset( $disabled['av_tab_container'] ) )
		{
			if( '' != locate_template( array( 'template-archives.php' ) ) )
			{
				unset( $disabled['av_tab_container'] );
			}
		}

		//	since 4.8.3 we need Social Button ALB CSS on single post for extended design
		unset( $disabled['av_social_share'] );

		return $disabled;
	}

	add_filter( 'avf_disable_frontend_assets', 'av_disable_unused_assets', 10, 1 );
}




if( ! function_exists( 'av_disable_button_in_backend' ) )
{
	/**
	 * Disable button in backend if the user has manually set them to be disabled
	 *
	 * @since 4.3
	 * @added_by Kriesi
	 * @param array
	 * @return array
	 */
	function av_disable_button_in_backend( $shortcode )
	{
		$key = 'av_alb_disable_' . $shortcode['shortcode'];
		$disabled = avia_get_option( $key );

		if( $key == $disabled && ! empty( $shortcode['disabling_allowed'] ) )
		{
			$shortcode['disabled'] = array(
				'condition' => true,
				'text'   	=> __( 'This element is disabled in your theme options. You can enable it in Enfold &raquo; Performance', 'avia_framework' )
				);
		}

		return $shortcode;
	}

	if( avia_get_option( 'disable_alb_elements' ) == 'manually' )
	{
		add_filter( 'avf_shortcode_insert_button_backend', 'av_disable_button_in_backend', 10, 1 );
	}
}

if( ! function_exists( 'av_video_assets_required' ) )
{
	/**
	* Checks the entries for the current page for av_video, av_audio, <audio>, <video> and background video elements.
	*
	* @since 4.3
	* @added_by Kriesi
	* @param array $assets
	*/
	function av_video_assets_required()
	{
		global $posts;

		$used = false;

		if( ! is_array( $posts ) )
		{
			return $used;
		}

		$regex = "!\[av_blog|\[av_postslider|\[av_video|\[av_audio|\[av_player|\[audio|<audio|<video|video\=\'http|video\=\"http!";

		foreach( $posts as $post )
		{
			$matches = array();
			preg_match( $regex, $post->post_content, $matches );

			if( isset( $matches[0] ) )
			{
				$used = true;
				break;
			}

			$format = get_post_format( $post->ID );

			if( $format == 'audio' || $format == 'video' )
			{
				$used = true;
				break;
			}
		}

		return $used;
	}
}

if( ! function_exists( 'av_slideshow_required' ) )
{
	/**
	* Checks the entries for background video elements.
	*
	* @since 4.4
	* @added_by Kriesi
	* @param array $assets
	*/
	function av_slideshow_required()
	{
		global $posts;

		$used = false;

		if( ! is_array( $posts ) )
		{
			return $used;
		}

		$regex = "!video\=\'http|video\=\"http!";

		foreach( $posts as $post )
		{
			$matches = array();
			preg_match( $regex, $post->post_content, $matches );

			if( isset( $matches[0] ) )
			{
				$used = true;
				break;
			}
		}

		return $used;
	}
}


if( ! function_exists( 'av_comments_on_builder_posts' ) )
{
	/**
	 * Checks the entries for the current page for comment list element
	 *
	 * @since 4.3
	 * @added_by Kriesi
	 * @param boolean $open
	 * @param int $post_id
	 */
	add_filter( 'comments_open', 'av_comments_on_builder_posts_required', 10, 2 );

	function av_comments_on_builder_posts_required( $open , $post_id )
	{
		if( $open && is_singular() )
		{
			$post = get_post( $post_id );

			if( 'active' === Avia_Builder()->get_alb_builder_status( $post_id ) )
			{
				$regex 	= "!\[av_comments_list!";
				preg_match( $regex, $post->post_content, $matches );

				if( ! isset( $matches[0] ) )
				{
					$open = false;
				}

			}
		}

		return $open;
	}
}



if( ! function_exists( 'av_move_jquery_into_footer' ) )
{
	/**
	* moves the jquery library to the footer. only recommended to use if we know that no plugins that we dont know are active
	*
	* either call directly or hook into add_action( 'wp_enqueue_scripts', 'av_move_jquery_into_footer' , 20);
	*
	* @since 4.3
	* @added_by Kriesi
	* @param array $assets
	*/

	function av_move_jquery_into_footer()
	{
		if( is_admin() )
		{
	        return;
	    }

	    wp_scripts()->add_data( 'jquery', 'group', 1 );
	    wp_scripts()->add_data( 'jquery-core', 'group', 1 );
	    wp_scripts()->add_data( 'jquery-migrate', 'group', 1 );
	}
}



if(!function_exists('av_count_untested_plugins'))
{
	/**
	* check how many plugins are active that we did not test the theme with.
	*
	* a plugin is considered 'tested' if it still works fine after these modifications:
	* - jQuery was moved to the footer in frontend
	*
	* the function is used to set certain optimized defaults on small installations that do not use a big amount of plugins
	*
	* @since 4.3
	* @added_by Kriesi
	* @param array $assets
	*/

	function av_count_untested_plugins()
	{
		//all plugins that start with the name 'avia' are considered tested
		$tested_plugins = apply_filters( 'avf_tested_plugin_list' , array(
							'hello.php',
							'akismet/akismet.php',
							'layerslider/layerslider.php',
							'tiny-compress-images/tiny-compress-images.php',
							'woocommerce/woocommerce.php',
							'shortpixel-image-optimiser/wp-shortpixel.php',
							'optimus/optimus.php',
							'wp-super-cache/wp-cache.php',
							'comet-cache/comet-cache.php',
							'comet-cache-pro/comet-cache-pro.php',
							'duplicate-post/duplicate-post.php',
							'wordpress-importer/wordpress-importer.php',
							'wordpress-beta-tester/wp-beta-tester.php',
							'worker/init.php', //managewp
							'really-simple-ssl/rlrsssl-really-simple-ssl.php',
							'bbpress/bbpress.php',
					));


		$count = 0;
		$plugins = array_flip( get_option( 'active_plugins', array() ) );

		if( is_multisite() && function_exists( 'get_site_option' ) )
		{
		   $plugins = array_merge( $plugins, get_site_option( 'active_sitewide_plugins', array() ) );
		}

		foreach( $plugins as $path => $value )
		{
			if( ! in_array( $path, $tested_plugins ) && strpos( $path, 'avia' ) === false )
			{
				$count++;
			}
		}

	   return $count;
	}
}




if( ! function_exists( 'av_untested_plugins_debugging_info' ) )
{
	/**
	 * Adds untested plugin count to debugging info
	 *
	 * @since 4.3
	 * @added_by Kriesi
	 * @param string $info
	 * @return string
	 */
	function av_untested_plugins_debugging_info( $info )
	{
		$info .= 'PLAu:' . av_count_untested_plugins() . "\n";
		return $info;
	}

	add_filter( 'avf_debugging_info_add', 'av_untested_plugins_debugging_info', 10, 1 );
}


if( ! function_exists( 'av_print_above_the_fold_assets' ) )
{
	/**
	* Guesses which elements are above the fold (usually the first section or slider) and prints the css in addition
	* Currently not used
	*
	* @since 4.3
	* @added_by Kriesi
	* @param array $assets
	*/
	function av_print_above_the_fold_assets( $assets )
	{
		return $assets;
	}

	// add_filter( 'avf_also_print_asset', 'av_print_above_the_fold_assets', 10, 1 );
}