<?php


if ( ! function_exists( 'et_builder_should_load_framework' ) ) :
function et_builder_should_load_framework() {
	global $pagenow;

	static $should_load = null;

	if ( null !== $should_load ) {
		return $should_load;
	}

	$is_admin = is_admin();
	$required_admin_pages = array( 'edit.php', 'post.php', 'post-new.php', 'admin.php', 'customize.php', 'edit-tags.php', 'admin-ajax.php', 'export.php', 'options-permalink.php', 'themes.php', 'revision.php' ); // list of admin pages where we need to load builder files
	$specific_filter_pages = array( 'edit.php', 'admin.php', 'edit-tags.php' ); // list of admin pages where we need more specific filtering

	$is_edit_library_page = 'edit.php' === $pagenow && isset( $_GET['post_type'] ) && 'et_pb_layout' === $_GET['post_type'];
	$is_role_editor_page = 'admin.php' === $pagenow && isset( $_GET['page'] ) && apply_filters( 'et_divi_role_editor_page', 'et_divi_role_editor' ) === $_GET['page'];
	$is_import_page = 'admin.php' === $pagenow && isset( $_GET['import'] ) && 'wordpress' === $_GET['import']; // Page Builder files should be loaded on import page as well to register the et_pb_layout post type properly
	$is_wpml_page = 'admin.php' === $pagenow && isset( $_GET['page'] ) && 'sitepress-multilingual-cms/menu/languages.php' === $_GET['page']; // Page Builder files should be loaded on WPML clone page as well to register the custom taxonomies properly
	$is_edit_layout_category_page = 'edit-tags.php' === $pagenow && isset( $_GET['taxonomy'] ) && 'layout_category' === $_GET['taxonomy'];

	if ( ! $is_admin || ( $is_admin && in_array( $pagenow, $required_admin_pages ) && ( ! in_array( $pagenow, $specific_filter_pages ) || $is_edit_library_page || $is_role_editor_page || $is_edit_layout_category_page || $is_import_page || $is_wpml_page ) ) ) {
		$should_load = true;
	} else {
		$should_load = false;
	}

	return $should_load;
}
endif;

function et_builder_register_layouts(){
	$labels = array(
		'name'               => esc_html_x( 'Layouts', 'Layout type general name', 'et_builder' ),
		'singular_name'      => esc_html_x( 'Layout', 'Layout type singular name', 'et_builder' ),
		'add_new'            => esc_html_x( 'Add New', 'Layout item', 'et_builder' ),
		'add_new_item'       => esc_html__( 'Add New Layout', 'et_builder' ),
		'edit_item'          => esc_html__( 'Edit Layout', 'et_builder' ),
		'new_item'           => esc_html__( 'New Layout', 'et_builder' ),
		'all_items'          => esc_html__( 'All Layouts', 'et_builder' ),
		'view_item'          => esc_html__( 'View Layout', 'et_builder' ),
		'search_items'       => esc_html__( 'Search Layouts', 'et_builder' ),
		'not_found'          => esc_html__( 'Nothing found', 'et_builder' ),
		'not_found_in_trash' => esc_html__( 'Nothing found in Trash', 'et_builder' ),
		'parent_item_colon'  => '',
	);

	$args = array(
		'labels'             => $labels,
		'public'             => false,
		'show_ui'            => true,
		'show_in_menu'       => false,
		'publicly_queryable' => false,
		'can_export'         => true,
		'query_var'          => false,
		'has_archive'        => false,
		'capability_type'    => 'post',
		'map_meta_cap'       => true,
		'hierarchical'       => false,
		'supports'           => array( 'title', 'editor', 'revisions' ),
	);

	if ( is_user_logged_in() && current_user_can( 'edit_posts' ) && isset( $_GET['et_fb'] ) && '1' === $_GET['et_fb'] && et_pb_is_allowed( 'use_visual_builder' ) ) {
		$args['publicly_queryable'] = true;
	}

	// Cannot use is_et_pb_preview() because it's too early
	if ( isset( $_GET['et_pb_preview'] ) && ( isset( $_GET['et_pb_preview_nonce'] ) && wp_verify_nonce( $_GET['et_pb_preview_nonce'], 'et_pb_preview_nonce' ) ) ) {
		$args['publicly_queryable'] = true;
	}

	if ( ! defined( 'ET_BUILDER_LAYOUT_POST_TYPE' ) ) {
		define( 'ET_BUILDER_LAYOUT_POST_TYPE', 'et_pb_layout' );
	}

	register_post_type( ET_BUILDER_LAYOUT_POST_TYPE, apply_filters( 'et_pb_layout_args', $args ) );

	$labels = array(
		'name'              => esc_html__( 'Scope', 'et_builder' )
	);

	register_taxonomy( 'scope', array( 'et_pb_layout' ), array(
		'hierarchical'      => false,
		'labels'            => $labels,
		'show_ui'           => false,
		'show_admin_column' => false,
		'query_var'         => true,
		'show_in_nav_menus' => false,
	) );

	$labels = array(
		'name'              => esc_html__( 'Layout Type', 'et_builder' )
	);

	register_taxonomy( 'layout_type', array( 'et_pb_layout' ), array(
		'hierarchical'      => false,
		'labels'            => $labels,
		'show_ui'           => false,
		'show_admin_column' => true,
		'query_var'         => true,
		'show_in_nav_menus' => false,
	) );

	$labels = array(
		'name'              => esc_html__( 'Module Width', 'et_builder' )
	);

	register_taxonomy( 'module_width', array( 'et_pb_layout' ), array(
		'hierarchical'      => false,
		'labels'            => $labels,
		'show_ui'           => false,
		'show_admin_column' => false,
		'query_var'         => true,
		'show_in_nav_menus' => false,
	) );

	$labels = array(
		'name'              => esc_html__( 'Category', 'et_builder' )
	);

	register_taxonomy( 'layout_category', array( 'et_pb_layout' ), array(
		'hierarchical'      => true,
		'labels'            => $labels,
		'show_ui'           => true,
		'show_admin_column' => true,
		'query_var'         => true,
		'show_in_nav_menus' => false,
	) );
}

if ( et_builder_should_load_framework() ) {
	et_builder_register_layouts();
}

if ( ! function_exists( 'et_builder_maybe_enable_inline_styles' ) ):
function et_builder_maybe_enable_inline_styles() {
	et_update_option( 'static_css_custom_css_safety_check_done', true );

	if ( ! wp_get_custom_css() ) {
		return;
	}

	// This site has Custom CSS that existed prior to v3.0.54 which could contain syntax
	// errors that the user is unaware of. Such errors would cause problems in a unified
	// static CSS file so let's enable inline styles for the builder's design styles.
	et_update_option( 'et_pb_css_in_footer', 'on' );
}
endif;

if ( defined( 'ET_CORE_UPDATED' ) && ! et_get_option( 'static_css_custom_css_safety_check_done', false ) ) {
	et_builder_maybe_enable_inline_styles();
}

function et_pb_video_get_oembed_thumbnail() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) {
		die( -1 );
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$video_url = esc_url( $_POST['et_video_url'] );
	if ( false !== wp_oembed_get( $video_url ) ) {
		// Get image thumbnail
		add_filter( 'oembed_dataparse', 'et_pb_video_oembed_data_parse', 10, 3 );
		// Save thumbnail
		$image_src = wp_oembed_get( $video_url );
		// Set back to normal
		remove_filter( 'oembed_dataparse', 'et_pb_video_oembed_data_parse', 10, 3 );
		if ( '' === $image_src ) {
			die( -1 );
		}
		echo esc_url( $image_src );
	} else {
		die( -1 );
	}
	die();
}
add_action( 'wp_ajax_et_pb_video_get_oembed_thumbnail', 'et_pb_video_get_oembed_thumbnail' );

if ( ! function_exists( 'et_pb_video_oembed_data_parse' ) ) :
function et_pb_video_oembed_data_parse( $return, $data, $url ) {
	if ( isset( $data->thumbnail_url ) ) {
		return esc_url( str_replace( array('https://', 'http://'), '//', $data->thumbnail_url ), array('http') );
	} else {
		return false;
	}
}
endif;

function et_pb_add_widget_area(){
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die(-1);

	if ( ! current_user_can( 'manage_options' ) ) {
		die( -1 );
	}

	$et_pb_widgets = get_theme_mod( 'et_pb_widgets' );

	$number = $et_pb_widgets ? intval( $et_pb_widgets['number'] ) + 1 : 1;

	$et_widget_area_name = sanitize_text_field( $_POST['et_widget_area_name'] );
	$et_pb_widgets['areas']['et_pb_widget_area_' . $number] = $et_widget_area_name;
	$et_pb_widgets['number'] = $number;

	set_theme_mod( 'et_pb_widgets', $et_pb_widgets );

	et_pb_force_regenerate_templates();

	printf( et_get_safe_localization( __( '<strong>%1$s</strong> widget area has been created. You can create more areas, once you finish update the page to see all the areas.', 'et_builder' ) ),
		esc_html( $et_widget_area_name )
	);

	die();
}
add_action( 'wp_ajax_et_pb_add_widget_area', 'et_pb_add_widget_area' );

function et_pb_remove_widget_area(){
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die(-1);

	if ( ! current_user_can( 'manage_options' ) ) {
		die( -1 );
	}

	$et_pb_widgets = get_theme_mod( 'et_pb_widgets' );

	$et_widget_area_name = sanitize_text_field( $_POST['et_widget_area_name'] );
	unset( $et_pb_widgets['areas'][ $et_widget_area_name ] );

	set_theme_mod( 'et_pb_widgets', $et_pb_widgets );

	et_pb_force_regenerate_templates();

	die( esc_html( $et_widget_area_name ) );
}
add_action( 'wp_ajax_et_pb_remove_widget_area', 'et_pb_remove_widget_area' );

function et_pb_current_user_can_lock() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die( -1 );

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$permission = et_pb_is_allowed( 'lock_module' );
	$permission = json_encode( $permission );

	die( $permission );
}
add_action( 'wp_ajax_et_pb_current_user_can_lock', 'et_pb_current_user_can_lock' );

function et_builder_get_builder_post_types() {
	return apply_filters( 'et_builder_post_types', array(
		'page',
		'project',
		'et_pb_layout',
		'post',
	) );
}

function et_builder_get_fb_post_types() {
	return apply_filters( 'et_fb_post_types', array(
		'page',
		'project',
		'et_pb_layout',
		'post',
	) );
}

function et_is_extra_library_layout( $post_id ) {
	return 'layout' === get_post_meta( $post_id, '_et_pb_built_for_post_type', true ) ? true : false;
}

/**
 * Check whether the specified capability allowed for current user
 * @return bool
 */
function et_pb_is_allowed( $capabilities, $role = '' ) {
	$saved_capabilities = et_pb_get_role_settings();
	$role = '' === $role ? et_pb_get_current_user_role() : $role;

	foreach ( (array) $capabilities as $capability ) {
		if ( ! empty( $saved_capabilities[ $role ][ $capability ] ) && 'off' === $saved_capabilities[ $role ][ $capability ] ) {
			return false;
		}
	}

	return true;
}

/**
 * Gets the array of role settings
 * @return string
 */
function et_pb_get_role_settings() {
	global $et_pb_role_settings;

	// if we don't have saved global variable, then get the value from WPDB
	$et_pb_role_settings = isset( $et_pb_role_settings ) ? $et_pb_role_settings : get_option( 'et_pb_role_settings', array() );

	return $et_pb_role_settings;
}

/**
 * Determines the current user role
 * @return string
 */
function et_pb_get_current_user_role() {
	$current_user = wp_get_current_user();
	$user_roles = $current_user->roles;

	// retrieve the role from array if exists or determine it using custom mechanism
	// $user_roles array may start not from 0 index. Use reset() to retrieve the first value from array regardless its index
	$role = ! empty( $user_roles ) ? reset( $user_roles ) : et_pb_determine_current_user_role();

	return $role;
}

/**
 * Generate the list of all roles ( with editing permissions ) registered in current WP
 * @return string
 */
function et_pb_get_all_roles_list() {
	// get all roles registered in current WP
	if ( ! function_exists( 'get_editable_roles' ) ) {
		require_once( ABSPATH . 'wp-admin/includes/user.php' );
	}

	$all_roles = get_editable_roles();
	$builder_roles_array = array();

	if ( ! empty( $all_roles ) ) {
		foreach( $all_roles as $role => $role_data ) {
			// add roles with edit_posts capability into $builder_roles_array
			if ( ! empty( $role_data['capabilities']['edit_posts'] ) && 1 === (int) $role_data['capabilities']['edit_posts'] ) {
				$builder_roles_array[ $role ] = $role_data['name'];
			}
		}
	}

	// fill the builder roles array with default roles if it's empty
	if ( empty( $builder_roles_array ) ) {
		$builder_roles_array = array(
			'administrator' => esc_html__( 'Administrator', 'et_builder' ),
			'editor'        => esc_html__( 'Editor', 'et_builder' ),
			'author'        => esc_html__( 'Author', 'et_builder' ),
			'contributor'   => esc_html__( 'Contributor', 'et_builder' ),
		);
	}

	return $builder_roles_array;
}

/**
 * Determine the current user role by checking every single registered role via current_user_can()
 * @return string
 */
function et_pb_determine_current_user_role() {
	$all_roles = et_pb_get_all_roles_list();

	// go through all the registered roles and return the one current user have
	foreach( $all_roles as $role => $role_data ) {
		if ( current_user_can( $role ) ) {
			return $role;
		}
	}
}

function et_pb_show_all_layouts_built_for_post_type( $post_type ) {
	$similar_post_types = array(
		'post',
		'page',
		'project',
	);

	if ( in_array( $post_type, $similar_post_types ) ) {
		return $similar_post_types;
	}

	return $post_type;
}
add_filter( 'et_pb_show_all_layouts_built_for_post_type', 'et_pb_show_all_layouts_built_for_post_type' );

function et_pb_show_all_layouts() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die(-1);

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	printf( '
		<label for="et_pb_load_layout_replace">
			<input name="et_pb_load_layout_replace" type="checkbox" id="et_pb_load_layout_replace" %2$s/>
			%1$s
		</label>',
		esc_html__( 'Replace the existing content with loaded layout', 'et_builder' ),
		checked( get_theme_mod( 'et_pb_replace_content', 'on' ), 'on', false )
	);

	$post_type = ! empty( $_POST['et_layouts_built_for_post_type'] ) ? sanitize_text_field( $_POST['et_layouts_built_for_post_type'] ) : 'post';
	$layouts_type = ! empty( $_POST['et_load_layouts_type'] ) ? sanitize_text_field( $_POST['et_load_layouts_type'] ) : 'predefined';

	$predefined_operator = 'predefined' === $layouts_type ? 'EXISTS' : 'NOT EXISTS';

	$post_type = apply_filters( 'et_pb_show_all_layouts_built_for_post_type', $post_type, $layouts_type );

	$query_args = array(
		'meta_query'      => array(
			'relation' => 'AND',
			array(
				'key'     => '_et_pb_predefined_layout',
				'value'   => 'on',
				'compare' => $predefined_operator,
			),
			array(
				'key'     => '_et_pb_built_for_post_type',
				'value'   => $post_type,
				'compare' => 'IN',
			),
			array(
				'key'     => '_et_pb_layout_applicability',
				'value'   => 'product_tour',
				'compare' => 'NOT EXISTS',
			),
		),
		'tax_query' => array(
			array(
				'taxonomy' => 'layout_type',
				'field'    => 'slug',
				'terms'    => array( 'section', 'row', 'module', 'fullwidth_section', 'specialty_section', 'fullwidth_module' ),
				'operator' => 'NOT IN',
			),
		),
		'post_type'       => ET_BUILDER_LAYOUT_POST_TYPE,
		'posts_per_page'  => '-1',
		'suppress_filters' => 'predefined' === $layouts_type,
	);

	$query = new WP_Query( $query_args );

	if ( $query->have_posts() ) :

		echo '<ul class="et-pb-all-modules et-pb-load-layouts">';

		while ( $query->have_posts() ) : $query->the_post();

			printf( '<li class="et_pb_text" data-layout_id="%2$s">%1$s<span class="et_pb_layout_buttons"><a href="#" class="button-primary et_pb_layout_button_load">%3$s</a>%4$s</span></li>',
				esc_html( get_the_title() ),
				esc_attr( get_the_ID() ),
				esc_html__( 'Load', 'et_builder' ),
				'predefined' !== $layouts_type ?
					sprintf( '<a href="#" class="button et_pb_layout_button_delete">%1$s</a>',
						esc_html__( 'Delete', 'et_builder' )
					)
					: ''
			);

		endwhile;

		echo '</ul>';
	endif;

	wp_reset_postdata();

	die();
}
add_action( 'wp_ajax_et_pb_show_all_layouts', 'et_pb_show_all_layouts' );

function et_pb_get_saved_templates() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die(-1);

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$layout_type = ! empty( $_POST['et_layout_type'] ) ? sanitize_text_field( $_POST['et_layout_type'] ) : 'layout';
	$module_width = ! empty( $_POST['et_module_width'] ) && 'module' === $layout_type ? sanitize_text_field( $_POST['et_module_width'] ) : '';
	$is_global = ! empty( $_POST['et_is_global'] ) ? sanitize_text_field( $_POST['et_is_global'] ) : 'false';
	$specialty_query = ! empty( $_POST['et_specialty_columns'] ) && 'row' === $layout_type ? sanitize_text_field( $_POST['et_specialty_columns'] ) : '0';
	$post_type = ! empty( $_POST['et_post_type'] ) ? sanitize_text_field( $_POST['et_post_type'] ) : 'post';

	$templates_data = et_pb_retrieve_templates( $layout_type, $module_width, $is_global, $specialty_query, $post_type );

	if ( empty( $templates_data ) ) {
		$templates_data = array( 'error' => esc_html__( 'You have not saved any items to your Divi Library yet. Once an item has been saved to your library, it will appear here for easy use.', 'et_builder' ) );
	}

	$json_templates = json_encode( $templates_data );

	die( $json_templates );
}
add_action( 'wp_ajax_et_pb_get_saved_templates', 'et_pb_get_saved_templates' );

function et_pb_retrieve_templates( $layout_type = 'layout', $module_width = '', $is_global = 'false', $specialty_query = '0', $post_type = 'post', $layouts_type = 'predefined', $boundaries = array() ) {
	$templates_data = array();
	$suppress_filters = false;

	// need specific query for the layouts
	if ( 'layout' === $layout_type ) {
		$meta_query = array(
			'relation' => 'AND',
			array(
				'key'     => '_et_pb_built_for_post_type',
				'value'   => $post_type,
				'compare' => 'IN',
			),
		);

		if ( 'all' !== $layouts_type ) {
			$predefined_operator = 'predefined' === $layouts_type ? 'EXISTS' : 'NOT EXISTS';
			$meta_query[] = array(
				'key'     => '_et_pb_predefined_layout',
				'value'   => 'on',
				'compare' => $predefined_operator,
			);
		}

		$tax_query = array(
			array(
				'taxonomy' => 'layout_type',
				'field'    => 'slug',
				'terms'    => array( 'section', 'row', 'module', 'fullwidth_section', 'specialty_section', 'fullwidth_module' ),
				'operator' => 'NOT IN',
			),
		);
		$suppress_filters = 'predefined' === $layouts_type;
	} else {
		$additional_condition = '' !== $module_width ?
			array(
					'taxonomy' => 'module_width',
					'field'    => 'slug',
					'terms'    =>  $module_width,
				) : '';

		$meta_query = array();

		if ( '0' !== $specialty_query ) {
			$columns_val = '3' === $specialty_query ? array( '4_4', '1_2,1_2', '1_3,1_3,1_3' ) : array( '4_4', '1_2,1_2' );
			$meta_query[] = array(
				'key'     => '_et_pb_row_layout',
				'value'   => $columns_val,
				'compare' => 'IN',
			);
		}

		$post_type = apply_filters( 'et_pb_show_all_layouts_built_for_post_type', $post_type, $layout_type );
		$meta_query[] = array(
			'key'     => '_et_pb_built_for_post_type',
			'value'   => $post_type,
			'compare' => 'IN',
		);

		$tax_query = array(
			'relation' => 'AND',
			array(
				'taxonomy' => 'layout_type',
				'field'    => 'slug',
				'terms'    =>  $layout_type,
			),
			$additional_condition,
		);

		if ( 'all' !== $is_global ) {
			$global_operator = 'global' === $is_global ? 'IN' : 'NOT IN';
			$tax_query[] = array(
				'taxonomy' => 'scope',
				'field'    => 'slug',
				'terms'    => array( 'global' ),
				'operator' => $global_operator,
			);
		}
	}

	$start_from = 0;
	$limit_to = '-1';

	if ( ! empty( $boundaries ) ) {
		$start_from = $boundaries[0];
		$limit_to = $boundaries[1];
	}

	$query = new WP_Query( array(
		'tax_query'        => $tax_query,
		'post_type'        => ET_BUILDER_LAYOUT_POST_TYPE,
		'posts_per_page'   => $limit_to,
		'meta_query'       => $meta_query,
		'offset'           => $start_from,
		'suppress_filters' => $suppress_filters,
	) );

	wp_reset_postdata();

	if ( ! empty ( $query->posts ) ) {
		foreach( $query->posts as $single_post ) {

			if ( 'module' === $layout_type ) {
				$module_type = get_post_meta( $single_post->ID, '_et_pb_module_type', true );
			} else {
				$module_type = '';
			}

			// add only modules allowed for current user
			if ( '' === $module_type || et_pb_is_allowed( $module_type ) ) {
				$categories = wp_get_post_terms( $single_post->ID, 'layout_category' );
				$scope = wp_get_post_terms( $single_post->ID, 'scope' );
				$global_scope = isset( $scope[0] ) ? $scope[0]->slug : 'non_global';
				$categories_processed = array();
				$row_layout = '';
				$this_layout_type = '';
				$this_layout_applicability = '';

				if ( ! empty( $categories ) ) {
					foreach( $categories as $category_data ) {
						$categories_processed[] = esc_html( $category_data->slug );
					}
				}

				if ( 'row' === $layout_type ) {
					$row_layout = get_post_meta( $single_post->ID, '_et_pb_row_layout', true );
				}

				if ( 'layout' === $layout_type ) {
					$this_layout_type = 'on' === get_post_meta( $single_post->ID, '_et_pb_predefined_layout', true ) ? 'predefined' : 'library';
					$this_layout_applicability = get_post_meta( $single_post->ID, '_et_pb_layout_applicability', true );
				}

				// get unsynced global optoins for module
				if ( 'module' === $layout_type && 'false' !== $is_global ) {
					$unsynced_options = get_post_meta( $single_post->ID, '_et_pb_excluded_global_options' );
				}

				$templates_data[] = array(
					'ID'               => $single_post->ID,
					'title'            => esc_html( $single_post->post_title ),
					'shortcode'        => $single_post->post_content,
					'is_global'        => $global_scope,
					'layout_type'      => $layout_type,
					'applicability'    => $this_layout_applicability,
					'layouts_type'     => $this_layout_type,
					'module_type'      => $module_type,
					'categories'       => $categories_processed,
					'row_layout'       => $row_layout,
					'unsynced_options' => ! empty( $unsynced_options ) ? json_decode( $unsynced_options[0], true ) : array(),
				);
			}
		}
	}

	return $templates_data;
}


function et_pb_add_template_meta() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die(-1);

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$post_id = ! empty( $_POST['et_post_id'] ) ? sanitize_text_field( $_POST['et_post_id'] ) : '';
	$value = ! empty( $_POST['et_meta_value'] ) ? sanitize_text_field( $_POST['et_meta_value'] ) : '';
	$custom_field = ! empty( $_POST['et_custom_field'] ) ? sanitize_text_field( $_POST['et_custom_field'] ) : '';

	if ( '' !== $post_id ){
		update_post_meta( $post_id, $custom_field, $value );
	}
}
add_action( 'wp_ajax_et_pb_add_template_meta', 'et_pb_add_template_meta' );

if ( ! function_exists( 'et_pb_add_new_layout' ) ) {
	function et_pb_add_new_layout() {
		if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die( -1 );

		if ( ! current_user_can( 'edit_posts' ) ) {
			die( -1 );
		}

		$fields_data = isset( $_POST['et_layout_options'] ) ? $_POST['et_layout_options'] : '';

		if ( '' === $fields_data ) {
			die();
		}

		$fields_data_json = str_replace( '\\', '',  $fields_data );
		$fields_data_array = json_decode( $fields_data_json, true );
		$processed_data_array = array();

		// prepare array with fields data in convenient format
		if ( ! empty( $fields_data_array ) ) {
			foreach ( $fields_data_array as $index => $field_data ) {
				$processed_data_array[ $field_data['field_id'] ] = $field_data['field_val'];
			}
		}

		$processed_data_array = apply_filters( 'et_pb_new_layout_data_from_form', $processed_data_array, $fields_data_array );

		if ( empty( $processed_data_array ) ) {
			die();
		}

		$args = array(
			'layout_type'          => ! empty( $processed_data_array['new_template_type'] ) ? sanitize_text_field( $processed_data_array['new_template_type'] ) : 'layout',
			'layout_selected_cats' => ! empty( $processed_data_array['selected_cats'] ) ? sanitize_text_field( $processed_data_array['selected_cats'] ) : '',
			'built_for_post_type'  => ! empty( $processed_data_array['et_builder_layout_built_for_post_type'] ) ? sanitize_text_field( $processed_data_array['et_builder_layout_built_for_post_type'] ) : 'page',
			'layout_new_cat'       => ! empty( $processed_data_array['et_pb_new_cat_name'] ) ? sanitize_text_field( $processed_data_array['et_pb_new_cat_name'] ) : '',
			'columns_layout'       => ! empty( $processed_data_array['et_columns_layout'] ) ? sanitize_text_field( $processed_data_array['et_columns_layout'] ) : '0',
			'module_type'          => ! empty( $processed_data_array['et_module_type'] ) ? sanitize_text_field( $processed_data_array['et_module_type'] ) : 'et_pb_unknown',
			'layout_scope'         => ! empty( $processed_data_array['et_pb_template_global'] ) ? sanitize_text_field( $processed_data_array['et_pb_template_global'] ) : 'not_global',
			'module_width'         => 'regular',
			'layout_content'       => ! empty( $processed_data_array['template_shortcode'] ) ? $processed_data_array['template_shortcode'] : '',
			'layout_name'          => ! empty( $processed_data_array['et_pb_new_template_name'] ) ? sanitize_text_field( $processed_data_array['et_pb_new_template_name'] ) : '',
		);

		// construct the initial shortcode for new layout
		switch ( $args['layout_type'] ) {
			case 'row' :
				$args['layout_content'] = '[et_pb_row template_type="row"][/et_pb_row]';
				break;
			case 'section' :
				$args['layout_content'] = '[et_pb_section template_type="section"][et_pb_row][/et_pb_row][/et_pb_section]';
				break;
			case 'module' :
				$args['layout_content'] = '[et_pb_module_placeholder selected_tabs="all"]';
				break;
			case 'fullwidth_module' :
				$args['layout_content'] = '[et_pb_fullwidth_module_placeholder selected_tabs="all"]';
				$args['module_width'] = 'fullwidth';
				$args['layout_type'] = 'module';
				break;
			case 'fullwidth_section' :
				$args['layout_content'] = '[et_pb_section template_type="section" fullwidth="on"][/et_pb_section]';
				$args['layout_type'] = 'section';
				break;
			case 'specialty_section' :
				$args['layout_content'] = '[et_pb_section template_type="section" specialty="on" skip_module="true" specialty_placeholder="true"][/et_pb_section]';
				$args['layout_type'] = 'section';
				break;
		}

		$new_layout_meta = et_pb_submit_layout( apply_filters( 'et_pb_new_layout_args', $args ) );
		die( $new_layout_meta );
	}
}
add_action( 'wp_ajax_et_pb_add_new_layout', 'et_pb_add_new_layout' );

if ( ! function_exists( 'et_pb_submit_layout' ) ) {
	function et_pb_submit_layout( $args ) {
		if ( empty( $args ) ) {
			return;
		}

		$layout_cats_processed = array();

		if ( '' !== $args['layout_selected_cats'] ) {
			$layout_cats_array = explode( ',', $args['layout_selected_cats'] );
			$layout_cats_processed = array_map( 'intval', $layout_cats_array );
		}

		$meta = array();

		if ( 'row' === $args['layout_type'] && '0' !== $args['columns_layout'] ) {
			$meta = array_merge( $meta, array( '_et_pb_row_layout' => $args['columns_layout'] ) );
		}

		if ( 'module' === $args['layout_type'] ) {
			$meta = array_merge( $meta, array( '_et_pb_module_type' => $args['module_type'] ) );

			// save unsynced options for global modules. Always empty for new modules.
			if ( 'global' === $args['layout_scope'] ) {
				$meta = array_merge( $meta, array( '_et_pb_excluded_global_options' => json_encode( array() ) ) );
			}
		}

		//et_layouts_built_for_post_type
		$meta = array_merge( $meta, array( '_et_pb_built_for_post_type' => $args['built_for_post_type'] ) );

		$tax_input = array(
			'scope'           => $args['layout_scope'],
			'layout_type'     => $args['layout_type'],
			'module_width'    => $args['module_width'],
			'layout_category' => $layout_cats_processed,
		);

		$new_layout_id = et_pb_create_layout( $args['layout_name'], $args['layout_content'], $meta, $tax_input, $args['layout_new_cat'] );
		$new_post_data['post_id'] = $new_layout_id;

		$new_post_data['edit_link'] = htmlspecialchars_decode( get_edit_post_link( $new_layout_id ) );
		$json_post_data = json_encode( $new_post_data );

		return $json_post_data;
	}
}

if ( ! function_exists( 'et_pb_create_layout' ) ) :
function et_pb_create_layout( $name, $content, $meta = array(), $tax_input = array(), $new_category = '' ) {
	$layout = array(
		'post_title'   => sanitize_text_field( $name ),
		'post_content' => $content,
		'post_status'  => 'publish',
		'post_type'    => ET_BUILDER_LAYOUT_POST_TYPE,
	);

	$layout_id = wp_insert_post( $layout );

	if ( !empty( $meta ) ) {
		foreach ( $meta as $meta_key => $meta_value ) {
			add_post_meta( $layout_id, $meta_key, sanitize_text_field( $meta_value ) );
		}
	}
	if ( '' !== $new_category ) {
		$new_term_id = wp_insert_term( $new_category, 'layout_category' );
		$tax_input['layout_category'][] = (int) $new_term_id['term_id'];
	}

	if ( ! empty( $tax_input ) ) {
		foreach( $tax_input as $taxonomy => $terms ) {
			wp_set_post_terms( $layout_id, $terms, $taxonomy );
		}
	}

	return $layout_id;
}
endif;

function et_pb_save_layout() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die( -1 );

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	if ( empty( $_POST['et_layout_name'] ) ) {
		die();
	}

	$args = array(
		'layout_type'          => isset( $_POST['et_layout_type'] ) ? sanitize_text_field( $_POST['et_layout_type'] ) : 'layout',
		'layout_selected_cats' => isset( $_POST['et_layout_cats'] ) ? sanitize_text_field( $_POST['et_layout_cats'] ) : '',
		'built_for_post_type'  => isset( $_POST['et_post_type'] ) ? sanitize_text_field( $_POST['et_post_type'] ) : 'page',
		'layout_new_cat'       => isset( $_POST['et_layout_new_cat'] ) ? sanitize_text_field( $_POST['et_layout_new_cat'] ) : '',
		'columns_layout'       => isset( $_POST['et_columns_layout'] ) ? sanitize_text_field( $_POST['et_columns_layout'] ) : '0',
		'module_type'          => isset( $_POST['et_module_type'] ) ? sanitize_text_field( $_POST['et_module_type'] ) : 'et_pb_unknown',
		'layout_scope'         => isset( $_POST['et_layout_scope'] ) ? sanitize_text_field( $_POST['et_layout_scope'] ) : 'not_global',
		'module_width'         => isset( $_POST['et_module_width'] ) ? sanitize_text_field( $_POST['et_module_width'] ) : 'regular',
		'layout_content'       => isset( $_POST['et_layout_content'] ) ? $_POST['et_layout_content'] : '',
		'layout_name'          => isset( $_POST['et_layout_name'] ) ? sanitize_text_field( $_POST['et_layout_name'] ) : '',
	);

	$new_layout_meta = et_pb_submit_layout( $args );
	die( $new_layout_meta );
}
add_action( 'wp_ajax_et_pb_save_layout', 'et_pb_save_layout' );

function et_pb_get_global_module() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die( -1 );

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$post_id = isset( $_POST['et_global_id'] ) ? $_POST['et_global_id'] : '';

	if ( '' !== $post_id ) {
		$query = new WP_Query( array(
			'p'         => (int) $post_id,
			'post_type' => ET_BUILDER_LAYOUT_POST_TYPE
		) );

		wp_reset_postdata();

		if ( !empty( $query->post ) ) {
			$global_shortcode['shortcode'] = wpautop( $query->post->post_content );
			$excluded_global_options = get_post_meta( $post_id, '_et_pb_excluded_global_options' );
			$selective_sync_status = empty( $excluded_global_options ) ? '' : 'updated';

			$global_shortcode['sync_status'] = $selective_sync_status;
			$global_shortcode['excluded_options'] = $excluded_global_options;
		}
	}

	if ( empty( $global_shortcode ) ) {
		$global_shortcode['error'] = 'nothing';
	}

	$json_post_data = json_encode( $global_shortcode );

	die( $json_post_data );
}
add_action( 'wp_ajax_et_pb_get_global_module', 'et_pb_get_global_module' );

function et_pb_update_layout() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die( -1 );

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$post_id = isset( $_POST['et_template_post_id'] ) ? absint( $_POST['et_template_post_id'] ) : '';
	$new_content = isset( $_POST['et_layout_content'] ) ? et_pb_builder_post_content_capability_check( $_POST['et_layout_content'] ) : '';
	$layout_type = isset( $_POST['et_layout_type'] ) ? sanitize_text_field( $_POST['et_layout_type'] ) : '';

	if ( '' !== $post_id ) {
		$update = array(
			'ID'           => $post_id,
			'post_content' => $new_content,
		);

		$result = wp_update_post( $update );

		if ( ! $result || is_wp_error( $result ) ) {
			wp_send_json_error();
		}

		ET_Core_PageResource::remove_static_resources( 'all', 'all' );

		if ( 'module' === $layout_type && isset( $_POST['et_unsynced_options'] ) ) {
			$unsynced_options = sanitize_text_field( stripslashes( $_POST['et_unsynced_options'] ) );

			update_post_meta( $post_id, '_et_pb_excluded_global_options', $unsynced_options );
		}
	}

	die();
}
add_action( 'wp_ajax_et_pb_update_layout', 'et_pb_update_layout' );

function _et_pb_sanitize_code_module_content_regex( $matches ) {
	$sanitized_content = wp_kses_post( htmlspecialchars_decode( $matches[1] ) );
	$sanitized_shortcode = str_replace( $matches[1], $sanitized_content, $matches[0] );
	return $sanitized_shortcode;
}

function et_pb_builder_post_content_capability_check( $content) {
	if ( ! current_user_can( 'unfiltered_html' ) ) {
		$content = preg_replace_callback('/\[et_pb_code .*\](.*)\[\/et_pb_code\]/mis', '_et_pb_sanitize_code_module_content_regex', $content );
		$content = preg_replace_callback('/\[et_pb_fullwidth_code .*\](.*)\[\/et_pb_fullwidth_code\]/mis', '_et_pb_sanitize_code_module_content_regex', $content );
	}

	return $content;
}
add_filter( 'content_save_pre', 'et_pb_builder_post_content_capability_check' );

function et_pb_load_layout() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) die( -1 );

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$layout_id = (int) $_POST['et_layout_id'];

	if ( '' === $layout_id ) die( -1 );

	$replace_content = isset( $_POST['et_replace_content'] ) && 'on' === $_POST['et_replace_content'] ? 'on' : 'off';

	set_theme_mod( 'et_pb_replace_content', $replace_content );

	$layout = get_post( $layout_id );

	if ( $layout )
		echo $layout->post_content;

	die();
}
add_action( 'wp_ajax_et_pb_load_layout', 'et_pb_load_layout' );

function et_pb_delete_layout() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) {
		die( -1 );
	}

	if ( ! current_user_can( 'edit_others_posts' ) ) {
		die( -1 );
	}

	$layout_id = (int) $_POST['et_layout_id'];

	if ( '' === $layout_id ) die( -1 );

	wp_delete_post( $layout_id );

	die();
}
add_action( 'wp_ajax_et_pb_delete_layout', 'et_pb_delete_layout' );

function et_pb_get_backbone_templates() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) {
		die( -1 );
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$post_type = sanitize_text_field( $_POST['et_post_type'] );
	$start_from = isset( $_POST['et_templates_start_from'] ) ? sanitize_text_field( $_POST['et_templates_start_from'] ) : 0;
	$amount = ET_BUILDER_AJAX_TEMPLATES_AMOUNT;

	// get the portion of templates
	$result = json_encode( ET_Builder_Element::output_templates( $post_type, $start_from, $amount ) );

	die( $result );
}
add_action( 'wp_ajax_et_pb_get_backbone_templates', 'et_pb_get_backbone_templates' );

function et_builder_is_builder_built( $post_id = 0, $builder = '' ) {
	$post_id = $post_id ? $post_id : get_the_ID();

	$post = get_post( $post_id );

	if ( ! $post_id || ! $post || ! is_object( $post ) ) {
		return false;
	}

	// if no specific builder is passed, just check generically
	if ( empty( $builder ) ) {
		return et_pb_is_pagebuilder_used( $post->ID );
	// if a specific builder has been passed, see if its been used, this can also be used when passed a revision/autosave post
	} else if ( false !== strpos( $post->post_content, $builder .'_built="1"' ) ) {
		return true;
	} else {
		return false;
	}
}

/**
 * @return bool
 */
function et_is_builder_available_cookie_set() {
	static $builder_available = null;

	if ( null !== $builder_available ) {
		return $builder_available;
	}

	foreach( (array) $_COOKIE as $cookie => $value ) {
		if ( 0 === strpos( $cookie, 'et-editor-available-post-' ) ) {
			$builder_available = true;

			return $builder_available;
		}
	}

	$builder_available = false;

	return $builder_available;
}

function et_builder_heartbeat_interval() {
	return apply_filters( 'et_builder_heartbeat_interval', 30 );
}

function et_builder_ensure_heartbeat_interval( $response, $screen_id ) {
	if ( ! isset( $response['heartbeat_interval'] ) ) {
		return $response;
	}

	if ( et_builder_heartbeat_interval() === $response['heartbeat_interval'] ) {
		return $response;
	}

	if ( ! et_is_builder_available_cookie_set() ) {
		return $response;
	}

	$response['heartbeat_interval'] = et_builder_heartbeat_interval();

	return $response;
}
add_filter( 'heartbeat_send', 'et_builder_ensure_heartbeat_interval', 100, 2 );

function et_pb_heartbeat_post_modified( $response ) {
	if ( empty( $_POST['data'] ) ) {
		return $response;
	}

	$heartbeat_data = $_POST['data'];
	$has_focus = isset( $_POST['has_focus'] ) && 'true' == $_POST['has_focus'] ? true : false;
	$heartbeat_data_et = !empty( $heartbeat_data['et'] ) ? $heartbeat_data['et'] : false;

	if ( ! empty( $heartbeat_data_et ) ) {
		$post_id = absint( $heartbeat_data_et['post_id'] );
		$last_post_modified = sanitize_text_field( $heartbeat_data_et['last_post_modified'] );
		$built_by = sanitize_text_field( $heartbeat_data_et['built_by'] );
		$force_check = isset( $heartbeat_data_et['force_check'] ) && 'true' == $heartbeat_data_et['force_check'] ? true : false;
		$force_autosave = isset( $heartbeat_data_et['force_autosave'] ) && 'true' == $heartbeat_data_et['force_autosave'] ? true : false;
		$current_user_id = get_current_user_id();

		$post = get_post( $post_id );

		if ( ! $post_id || ! $post || ! is_object( $post ) ) {
			return false;
		}

		// minimum sucessful response
		$response['et'] = array(
			'received'       => true,
			'force_check'    => $force_check,
			'force_autosave' => $force_autosave,
		);

		// the editor in focus is not going to be receiving an update from the other editor
		// so we can return early
		if ( $has_focus && !$force_check ) {
			$response['et']['action'] = 'No actions since this editor has focus'; // dev use
			return $response;
		}

		if ( $force_autosave ) {
			$response['et']['action'] = 'No actions since this is a force autosave request'; // dev use
			return $response;
		}

		// from here down we know that the following logic applies to the editor
		// currently *not* in focus, i.e. the one eligable for a potential sync update

		// sync builder settings
		$builder_settings_autosave = get_post_meta( $post_id, "_et_builder_settings_autosave_{$current_user_id}", true );
		if ( ! empty( $builder_settings_autosave ) ) {
			$response['et']['builder_settings_autosave'] = $builder_settings_autosave;
		}

		$post_content = $post->post_content;
		$post_modified = $post->post_modified;

		$autosave = wp_get_post_autosave( $post_id, $current_user_id );

		$post_post_modified = date( 'U', strtotime( $post_modified ) );
		$response['et']['post_post_modified'] = $post->post_modified;


		if ( !empty( $autosave ) ) {
			$response['et']['autosave_exists'] = true;
			$autosave_post_modified = date( 'U', strtotime( $autosave->post_modified ) );
			$response['et']['autosave_post_modified'] = $autosave->post_modified;
		} else {
			$response['et']['autosave_exists'] = false;
		}

		if ( !empty( $autosave ) && $autosave_post_modified > $post_post_modified ) {
			$response['et']['used_autosave'] = true;
			$post_id = $autosave->ID;
			$post_content = $autosave->post_content;
			$post_modified = $autosave->post_modified;
		} else {
			$response['et']['used_autosave'] = false;
		}

		$response['et']['post_id'] = $post_id;
		$response['et']['last_post_modified'] = $last_post_modified;
		$response['et']['post_modified'] = $post_modified;

		if ( $last_post_modified != $post_modified ) {

			// check if the newly modified was made by opposite builder,
			// and if so, send it back in the response
			if ( 'bb' == $built_by ) {
				// backend builder in use and in focus

				$response['et']['is_built_by_fb'] = et_builder_is_builder_built( $post_id, 'fb' );
				// check if latest post_content is built by fb
				if ( et_builder_is_builder_built( $post_id, 'fb' ) ) {
					$response['et']['post_content'] = $post_content;
					$response['et']['action'] = 'current editor is bb, updated to content that was built by fb'; // dev use
				} else {
					$response['et']['action'] = 'current editor is bb, content wasnt updated by fb'; // dev use
				}
			} else {
				// frontend builder in use and in focus

				$response['et']['is_built_by_bb'] = et_builder_is_builder_built( $post_id, 'bb' );
				// check if latest post_content is built by bb
				if ( et_builder_is_builder_built( $post_id, 'bb' ) ) {
					$post_content_obj = et_fb_process_shortcode( $post_content );

					$response['et']['post_content_obj'] = $post_content_obj;
					$response['et']['action'] = 'current editor is fb, updated to content that was built by bb'; // dev use
				} else {
					$response['et']['action'] = 'current editor is fb, content wasnt updated by bb'; // dev use
				}
			}
		} else {
			$response['et']['post_not_modified'] = true;
			$response['et']['action'] = 'post content not modified externally'; // dev use
		}
	}

	return $response;
}
add_filter( 'heartbeat_send', 'et_pb_heartbeat_post_modified' );

/**
 * Save a post submitted via ETBuilder Heartbeat.
 *
 * Adapted from WordPress
 *
 * @copyright 2016 by the WordPress contributors.
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * This program incorporates work covered by the following copyright and
 * permission notices:
 *
 * b2 is (c) 2001, 2002 Michel Valdrighi - m@tidakada.com - http://tidakada.com
 *
 * b2 is released under the GPL
 *
 * WordPress - Web publishing software
 *
 * Copyright 2003-2010 by the contributors
 *
 * WordPress is released under the GPL
 *
 * @param array $post_data Associative array of the submitted post data.
 * @return mixed The value 0 or WP_Error on failure. The saved post ID on success.
 *               The ID can be the draft post_id or the autosave revision post_id.
 */

function et_fb_autosave( $post_data ) {
	if ( ! defined( 'DOING_AUTOSAVE' ) ) {
		define( 'DOING_AUTOSAVE', true );
	}

	$post_id = (int) $post_data['post_id'];
	$post_data['ID'] = $post_data['post_ID'] = $post_id;

	if ( false === wp_verify_nonce( $post_data['et_fb_autosave_nonce'], 'et_fb_autosave_nonce' ) ) {
		return new WP_Error( 'invalid_nonce', __( 'Error while saving.', 'et_builder' ) );
	}

	$post = get_post( $post_id );
	$current_user_id = get_current_user_id();

	if ( ! et_fb_current_user_can_save( $post_id ) ) {
		return new WP_Error( 'edit_posts', __( 'Sorry, you are not allowed to edit this item.', 'et_builder' ) );
	}

	// NOTE, no stripslashes() needed first as it's already been done on the POST'ed $post_data prior
	$shortcode_data = json_decode( $post_data['content'], true );

	$options = array(
		'post_type' => sanitize_text_field( $post_data['post_type'] ),
	);
	$post_data['content'] = et_fb_process_to_shortcode( $shortcode_data, $options );

	if ( 'auto-draft' == $post->post_status ) {
		$post_data['post_status'] = 'draft';
	}

	if ( ! wp_check_post_lock( $post->ID ) && get_current_user_id() == $post->post_author && ( 'auto-draft' == $post->post_status || 'draft' == $post->post_status ) ) {
		// Drafts and auto-drafts are just overwritten by autosave for the same user if the post is not locked
		return edit_post( wp_slash( $post_data ) );
	} else {
		// Non drafts or other users drafts are not overwritten. The autosave is stored in a special post revision for each user.
		return wp_create_post_autosave( wp_slash( $post_data ) );
	}
}

function et_pb_autosave_builder_settings( $post_id, $builder_settings ) {
	$current_user_id = get_current_user_id();
	// Builder settings autosave
	if ( !empty( $builder_settings ) ) {

		// Pseudo activate split test for VB draft/builder-sync interface
		if ( isset( $builder_settings['et_pb_use_ab_testing'] ) ) {
			// Save autosave/draft split test status
			update_post_meta(
				$post_id,
				'_et_pb_use_ab_testing_draft',
				sanitize_text_field( $builder_settings['et_pb_use_ab_testing'] )
			);

			// Format split test data, since BB has UI and actual input IDs. FB uses BB's UI ID
			$builder_settings['et_pb_enable_ab_testing'] = $builder_settings['et_pb_use_ab_testing'];

			// Unset BB's actual input data
			unset( $builder_settings['et_pb_use_ab_testing'] );
		}

		// Pseudo save split test subjects for VB draft/builder-sync interface
		if ( isset( $builder_settings['et_pb_ab_subjects'] ) ) {
			// Save autosave/draft subjects
			update_post_meta(
				$post_id,
				'_et_pb_ab_subjects_draft',
				sanitize_text_field( et_prevent_duplicate_item( $builder_settings['et_pb_ab_subjects'], ',' ) )
			);

			// Format subjects data into array
			$builder_settings['et_pb_ab_subjects'] = array_unique( explode( ',', $builder_settings['et_pb_ab_subjects'] ) );
		}

		$et_builder_settings_autosave_data = get_post_meta( $post_id, "_et_builder_settings_autosave_{$current_user_id}", true );

		// Merge incoming post meta changes with saved ones to avoid missing post meta changes that
		// has been synced but hasn't been delivered to VB. Let VB drops autosave once it has been
		// used / inserted into the layout
		if ( is_array( $et_builder_settings_autosave_data ) && is_array( $builder_settings ) ) {
			$et_builder_settings_autosave_data = wp_parse_args(
				$builder_settings,
				$et_builder_settings_autosave_data
			);
		} else {
			$et_builder_settings_autosave_data = $builder_settings;
		}

		return update_post_meta(
			$post_id,
			"_et_builder_settings_autosave_{$current_user_id}",
			$et_builder_settings_autosave_data
		);
	}
}

/**
 * Autosave with heartbeat
 *
 * Adapted from WordPress
 *
 * @copyright 2016 by the WordPress contributors.
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * This program incorporates work covered by the following copyright and
 * permission notices:
 *
 * b2 is (c) 2001, 2002 Michel Valdrighi - m@tidakada.com - http://tidakada.com
 *
 * b2 is released under the GPL
 *
 * WordPress - Web publishing software
 *
 * Copyright 2003-2010 by the contributors
 *
 * WordPress is released under the GPL
 *
 * @param array $response The Heartbeat response.
 * @param array $data     The $_POST data sent.
 * @return array The Heartbeat response.
 */

function et_fb_heartbeat_autosave( $response, $data ) {
	if ( ! empty( $data['et_fb_autosave'] ) ) {

		$post_id = (int) $data['et_fb_autosave']['post_id'];
		$has_focus = !empty( $_POST['has_focus'] ) && 'true' === $_POST['has_focus'];
		$force_autosave = !empty( $data['et'] ) && !empty( $data['et']['force_autosave'] ) && 'true' === $data['et']['force_autosave'];

		$editor_1 = 'fb' === $data['et']['built_by'] ? 'fb' : 'bb';
		$editor_2 = 'fb' === $editor_1 ? 'bb' : 'fb';
		$editor_1_editing_cookie = isset( $_COOKIE[ 'et-editing-post-' . $post_id . '-' . $editor_1 ] ) ? $_COOKIE[ 'et-editing-post-' . $post_id . '-' . $editor_1 ] : false;
		$editor_2_editor_available_cookie = isset( $_COOKIE[ 'et-editor-available-post-' . $post_id . '-' . $editor_2 ] ) ? $_COOKIE[ 'et-editor-available-post-' . $post_id . '-' . $editor_2 ] : false;
		$editor_1_autosavable = !empty( $editor_1_editing_cookie ) && empty( $editor_2_editor_available_cookie );

		if ( !$has_focus && !$force_autosave && !$editor_1_autosavable ) {
			$response['et_fb_autosave'] = array( 'success' => false, 'message' => __( 'Not saved, editor out of focus', 'et_builder' ) );
			return $response;
		}

		$saved = et_fb_autosave( $data['et_fb_autosave'] );

		if ( !empty( $data['et_fb_autosave']['builder_settings'] ) ) {
			$builder_settings_autosaved = et_pb_autosave_builder_settings( $post_id, $data['et_fb_autosave']['builder_settings'] );
			$response['et_pb_autosave_builder_settings'] = array( 'success' => $builder_settings_autosaved, 'message' => __( 'Builder settings synced', 'et_builder' ) );
		}

		if ( is_wp_error( $saved ) ) {
			$response['et_fb_autosave'] = array( 'success' => false, 'message' => $saved->get_error_message() );
		} elseif ( empty( $saved ) ) {
			$response['et_fb_autosave'] = array( 'success' => false, 'message' => __( 'Error while saving.', 'et_builder' ) );
		} else {
			/* translators: draft saved date format, see https://secure.php.net/date */
			$draft_saved_date_format = __( 'g:i:s a', 'et_builder' );
			/* translators: %s: date and time */
			$response['et_fb_autosave'] = array( 'success' => true, 'message' => sprintf( __( 'Draft saved at %s.', 'et_builder' ), date_i18n( $draft_saved_date_format ) ) );
		}
	}

	return $response;
}
add_filter( 'heartbeat_received', 'et_fb_heartbeat_autosave', 499, 2 );

function et_bb_heartbeat_autosave( $response, $data ) {
	if ( ! empty( $data['wp_autosave'] ) ) {
		$has_focus = !empty( $_POST['has_focus'] ) && 'true' === $_POST['has_focus'];
		$force_autosave = !empty( $data['et'] ) && !empty( $data['et']['force_autosave'] ) && 'true' === $data['et']['force_autosave'];

		if ( !$has_focus && !$force_autosave ) {
			$response['wp_autosave'] = array( 'success' => true, 'message' => __( 'Not saved, editor out of focus', 'et_builder' ) );
			remove_filter( 'heartbeat_received', 'heartbeat_autosave', 500, 2 );
			remove_filter( 'heartbeat_received', 'et_bb_heartbeat_builder_settings_autosave', 500, 2 );
		} else if ( $force_autosave ) {
			$response['wp_autosave_check'] = array( 'success' => true, 'message' => 'saved, because force_autosave ' );
		}
	}
	return $response;
}
add_filter( 'heartbeat_received', 'et_bb_heartbeat_autosave', 498, 2 );

function et_bb_heartbeat_builder_settings_autosave( $response, $data ) {
	if ( ! empty( $data['wp_autosave'] ) ) {
		$post_id = (int) $data['wp_autosave']['post_id'];

		if ( !empty( $data['wp_autosave']['builder_settings'] ) ) {
			$builder_settings_autosaved = et_pb_autosave_builder_settings( $post_id, $data['wp_autosave']['builder_settings'] );
			$response['et_pb_autosave_builder_settings'] = array( 'success' => $builder_settings_autosaved, 'message' => __( 'Builder settings synced', 'et_builder' ) );
		}
	}

	return $response;
}
add_filter( 'heartbeat_received', 'et_bb_heartbeat_builder_settings_autosave', 500, 2 );

function et_fb_wp_refresh_nonces( $response, $data, $screen_id ) {
	if ( ! isset( $data['et']['built_by'] ) || 'fb' !== $data['et']['built_by'] ) {
		return $response;
	}

	$response['et'] = array(
		'exportUrl'       => et_fb_get_portability_export_url(),
		'nonces'          => et_fb_get_nonces(),
		'heartbeat_nonce' => wp_create_nonce( 'heartbeat-nonce' ),
	);

	return $response;
}
add_filter( 'wp_refresh_nonces', 'et_fb_wp_refresh_nonces', 10, 3 );

function et_fb_get_portability_export_url() {
	$admin_url = is_ssl() ? admin_url() : admin_url( '', 'http' );
	$args      = array(
		'et_core_portability' => true,
		'context'             => 'et_builder',
		'name'                => 'temp_name',
		'nonce'               => wp_create_nonce( 'et_core_portability_nonce' ),
	);
	return add_query_arg( $args, $admin_url );
}

function et_fb_get_nonces() {
	$nonces    = apply_filters( 'et_fb_nonces', array() );
	$fb_nonces = array(
		'moduleContactFormSubmit'       => wp_create_nonce( 'et-pb-contact-form-submit' ),
		'et_admin_load'                 => wp_create_nonce( 'et_admin_load_nonce' ),
		'computedProperty'              => wp_create_nonce( 'et_pb_process_computed_property_nonce' ),
		'renderShortcode'               => wp_create_nonce( 'et_pb_render_shortcode_nonce' ),
		'backendHelper'                 => wp_create_nonce( 'et_fb_backend_helper_nonce' ),
		'renderSave'                    => wp_create_nonce( 'et_fb_save_nonce' ),
		'dropAutosave'                  => wp_create_nonce( 'et_fb_drop_autosave_nonce' ),
		'prepareShortcode'              => wp_create_nonce( 'et_fb_prepare_shortcode_nonce' ),
		'processImportedData'           => wp_create_nonce( 'et_fb_process_imported_data_nonce' ),
		'retrieveLibraryModules'        => wp_create_nonce( 'et_fb_retrieve_library_modules_nonce' ),
		'saveLibraryModules'            => wp_create_nonce( 'et_fb_save_library_modules_nonce' ),
		'preview'                       => wp_create_nonce( 'et_pb_preview_nonce' ),
		'autosave'                      => wp_create_nonce( 'et_fb_autosave_nonce' ),
		'moduleEmailOptinFetchLists'    => wp_create_nonce( 'et_builder_email_fetch_lists_nonce' ),
		'moduleEmailOptinAddAccount'    => wp_create_nonce( 'et_builder_email_add_account_nonce' ),
		'moduleEmailOptinRemoveAccount' => wp_create_nonce( 'et_builder_email_remove_account_nonce' ),
		'uploadFontNonce'               => wp_create_nonce( 'et_fb_upload_font_nonce' ),
	);

	return array_merge( $nonces, $fb_nonces );
}

if ( ! function_exists( 'et_builder_is_product_tour_enabled' ) ):
function et_builder_is_product_tour_enabled() {
	static $product_tour_enabled = null;

	if ( null !== $product_tour_enabled ) {
		return $product_tour_enabled;
	}

	if ( ! ( function_exists( 'et_fb_is_enabled' ) && et_fb_is_enabled() ) ) {
		return $product_tour_enabled = false;
	}

	/**
	 * Filters the on/off status of the product tour for the current user.
	 *
	 * @since 3.0.64
	 *
	 * @param string $product_tour_status_override Accepts 'on', 'off'.
	 */
	$product_tour_status_override = apply_filters( 'et_builder_product_tour_status_override', false );

	if ( false !== $product_tour_status_override ) {
		$product_tour_enabled = 'on' === $product_tour_status_override;
	} else {
		$user_id                    = (int) get_current_user_id();
		$product_tour_settings      = et_get_option( 'product_tour_status', array() );
		$product_tour_status_global = 'on' === et_get_option( 'et_pb_product_tour_global', 'on' );
		$product_tour_enabled       = $product_tour_status_global && ( ! isset( $product_tour_settings[ $user_id ] ) || 'on' === $product_tour_settings[ $user_id ] );
	}

	return $product_tour_enabled;
}
endif;

function et_pb_get_backbone_template() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) {
		die( -1 );
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$module_slugs = json_decode( str_replace( '\\', '', sanitize_text_field( $_POST['et_modules_slugs'] ) ) );
	$post_type   = sanitize_text_field( $_POST['et_post_type'] );

	// get the portion of templates for specified slugs
	$result = json_encode( ET_Builder_Element::get_modules_templates( $post_type, $module_slugs->missing_modules_array ) );

	die( $result );
}
add_action( 'wp_ajax_et_pb_get_backbone_template', 'et_pb_get_backbone_template' );


if ( ! function_exists( 'et_builder_email_add_account' ) ):
/**
 * Ajax handler for the Email Opt-in Module's "Add Account" action.
 */
function et_builder_email_add_account() {
	et_core_security_check( 'manage_options', 'et_builder_email_add_account_nonce' );

	$provider_slug = isset( $_POST['et_provider'] ) ? sanitize_text_field( $_POST['et_provider'] ) : '';
	$name_key      = "et_{$provider_slug}_account_name";
	$account_name  = isset( $_POST[ $name_key ] ) ? sanitize_text_field( $_POST[ $name_key ] ) : '';
	$is_BB         = isset( $_POST['et_bb'] );

	if ( empty( $provider_slug ) || empty( $account_name ) ) {
		et_core_die();
	}

	unset( $_POST[ $name_key ] );

	$fields = et_builder_email_get_fields_from_post_data( $provider_slug );

	if ( false === $fields  ) {
		et_core_die();
	}

	$result = et_core_api_email_fetch_lists( $provider_slug, $account_name, $fields );

	// Get data in builder format
	$accounts_list = et_builder_email_get_lists_field_data( $provider_slug, $is_BB );

	if ( 'success' === $result ) {
		$result = array(
			'error'         => false,
			'accounts_list' => $accounts_list,
		);
	} else {
		$result = array(
			'error'         => true,
			'message'       => esc_html__( 'Error: ', 'et_core' ) . esc_html( $result ),
			'accounts_list' => $accounts_list,
		);
	}

	die( json_encode( $result ) );
}
add_action( 'wp_ajax_et_builder_email_add_account', 'et_builder_email_add_account' );
endif;


if ( ! function_exists( 'et_builder_email_get_fields_from_post_data' ) ):
function et_builder_email_get_fields_from_post_data( $provider_slug ) {
	$fields = ET_Core_API_Email_Providers::instance()->account_fields( $provider_slug );
	$result = array();

	if ( ! $fields ) {
		// If there are no fields to check then the check passes.
		return $fields;
	}

	foreach ( $fields as $field_name => $field_info ) {
		$key = "et_{$provider_slug}_{$field_name}";

		if ( empty( $_POST[$key] ) && ! isset( $field_info['optional'] ) ) {
			return false;
		}

		$result[ $field_name ] = sanitize_text_field( $_POST[ $key ] );
	}

	return $result;
}
endif;


if ( ! function_exists( 'et_builder_email_get_lists_field_data' ) ):
/**
 * Get email list data in a builder's options field format.
 *
 * @param string $provider_slug
 * @param bool   $is_BB
 *
 * @return array|string The data in the BB's format if `$is_BB` is `true`, the FB's format otherwise.
 */
function et_builder_email_get_lists_field_data( $provider_slug, $is_BB = false ) {
	$signup     = new ET_Builder_Module_Signup();
	$fields     = $signup->get_fields();
	$field_name = $provider_slug . '_list';
	$field      = $fields[ $field_name ];

	if ( $is_BB ) {
		$field['only_options'] = true;
		$field['name']         = $field_name;
		$field_data            = $signup->render_field( $field );
	} else {
		$field_data = $field['options'];
	}

	// Make sure the BB updates its cached templates
	et_pb_force_regenerate_templates();

	return $field_data;
}
endif;


if ( ! function_exists( 'et_builder_email_get_lists' ) ):
/**
 * Ajax handler for the Email Opt-in Module's "Fetch Lists" action.
 */
function et_builder_email_get_lists() {
	et_core_security_check( 'manage_options', 'et_builder_email_fetch_lists_nonce' );

	$provider_slug = isset( $_POST['et_provider'] ) ? sanitize_text_field( $_POST['et_provider'] ) : '';
	$account_name  = isset( $_POST['et_account'] ) ? sanitize_text_field( $_POST['et_account'] ) : '';
	$is_BB         = isset( $_POST['et_bb'] );

	if ( empty( $provider_slug ) || empty( $account_name ) ) {
		et_core_die();
	}

	// Make sure email component group is loaded;
	new ET_Core_API_Email_Providers();

	// Fetch lists from provider
	$message = et_core_api_email_fetch_lists( $provider_slug, $account_name );

	// Get data in builder format
	$accounts_list = et_builder_email_get_lists_field_data( $provider_slug, $is_BB );

	$result = array(
		'error'         => false,
		'accounts_list' => $accounts_list,
	);

	if ( 'success' !== $message ) {
		$result['error']   = true;
		$result['message'] = esc_html__( 'Error: ', 'et_core' ) . esc_html( $message );
	}

	die( json_encode( $result ) );
}
add_action( 'wp_ajax_et_builder_email_get_lists', 'et_builder_email_get_lists' );
endif;


if ( ! function_exists( 'et_builder_email_maybe_migrate_accounts') ):
function et_builder_email_maybe_migrate_accounts() {
	$divi_migrated_key    = 'divi_email_provider_credentials_migrated';
	$builder_migrated_key = 'email_provider_credentials_migrated';

	$builder_options  = (array) get_option( 'et_pb_builder_options' );
	$builder_migrated = isset( $builder_options[ $builder_migrated_key ] );
	$divi_migrated    = et_get_option( $divi_migrated_key, false );

	$data_utils = ET_Core_Data_Utils::instance();
	$migrations = array( 'builder' => $builder_migrated, 'divi' => $divi_migrated );
	$providers  = new ET_Core_API_Email_Providers(); // Ensure the email component group is loaded.

	if ( $data_utils->all( $migrations, true ) ) {
		// We've already migrated accounts data
		return;
	}

	foreach ( $migrations as $product => $completed ) {
		if ( 'builder' === $product ) {
			$account_name      = 'Divi Builder Plugin';
			$mailchimp_api_key = isset( $builder_options['newsletter_main_mailchimp_key'] ) ? $builder_options['newsletter_main_mailchimp_key'] : '';

			$consumer_key    = isset( $builder_options['aweber_consumer_key'] ) ? $builder_options['aweber_consumer_key'] : '';
			$consumer_secret = isset( $builder_options['aweber_consumer_secret'] ) ? $builder_options['aweber_consumer_secret'] : '';
			$access_key      = isset( $builder_options['aweber_access_key'] ) ? $builder_options['aweber_access_key'] : '';
			$access_secret   = isset( $builder_options['aweber_access_secret'] ) ? $builder_options['aweber_access_secret'] : '';
		} else if ( 'divi' === $product ) {
			$account_name      = 'Divi Builder';
			$mailchimp_api_key = et_get_option( 'divi_mailchimp_api_key' );

			$consumer_key    = et_get_option( 'divi_aweber_consumer_key' );
			$consumer_secret = et_get_option( 'divi_aweber_consumer_secret' );
			$access_key      = et_get_option( 'divi_aweber_access_key' );
			$access_secret   = et_get_option( 'divi_aweber_access_secret' );
		} else {
			continue; // Satisfy code linter.
		}

		$aweber_key_parts = array( $consumer_key, $consumer_secret, $access_key, $access_secret );

		if ( $data_utils->all( $aweber_key_parts ) ) {
			// Typically AWeber tokens have five parts. We don't have the last part (the verifier token) because
			// we didn't save it at the time it was originally input by the user. Thus, we add an additional separator
			// (|) so that the token passes the processing performed by ET_Core_API_Email_Aweber::_parse_ID().
			$aweber_api_key = implode( '|', array( $consumer_key, $consumer_secret, $access_key, $access_secret, '|' ) );
		}

		if ( ! empty( $mailchimp_api_key ) ) {
			et_core_api_email_fetch_lists( 'MailChimp', "{$account_name} MailChimp", $mailchimp_api_key );
		}

		if ( ! empty( $aweber_api_key ) ) {
			$aweber = $providers->get( 'Aweber', "{$account_name} Aweber", 'builder' );

			$aweber->data['api_key']         = $aweber_api_key;
			$aweber->data['consumer_key']    = $consumer_key;
			$aweber->data['consumer_secret'] = $consumer_secret;
			$aweber->data['access_key']      = $access_key;
			$aweber->data['access_secret']   = $access_secret;
			$aweber->data['is_authorized']   = true;

			$aweber->save_data();
			$aweber->fetch_subscriber_lists();
		}
	}

	// Make sure the BB updates its cached templates
	et_pb_force_regenerate_templates();

	$builder_options[ $builder_migrated_key ] = true;

	update_option( 'et_pb_builder_options', $builder_options );
	et_update_option( $divi_migrated_key, true );
}
endif;


if ( ! function_exists( 'et_builder_email_remove_account' ) ):
/**
 * Ajax handler for the Email Opt-in Module's "Remove Account" action.
 */
function et_builder_email_remove_account() {
	et_core_security_check( 'manage_options', 'et_builder_email_remove_account_nonce' );

	$provider_slug = sanitize_text_field( $_POST['et_provider'] );
	$account_name  = sanitize_text_field( $_POST['et_account'] );
	$is_BB         = isset( $_POST['et_bb'] );

	if ( empty( $provider_slug ) || empty( $account_name ) ) {
		et_core_die();
	}

	et_core_api_email_remove_account( $provider_slug, $account_name );

	// Get data in builder format
	$accounts_list = et_builder_email_get_lists_field_data( $provider_slug, $is_BB );

	$result = array(
		'error'         => false,
		'accounts_list' => $accounts_list,
	);

	die( json_encode( $result ) );
}
add_action( 'wp_ajax_et_builder_email_remove_account', 'et_builder_email_remove_account' );
endif;


if ( ! function_exists( 'et_pb_submit_subscribe_form' ) ):
/**
 * Ajax handler for Email Opt-in Module form submissions.
 */
function et_pb_submit_subscribe_form() {
	et_core_security_check( '', 'et_frontend_nonce' );

	$providers = ET_Core_API_Email_Providers::instance();
	$utils     = ET_Core_Data_Utils::instance();

	$provider_slug = sanitize_text_field( $utils->array_get( $_POST, 'et_provider' ) );
	$account_name  = sanitize_text_field( $utils->array_get( $_POST, 'et_account' ) );

	if ( ! $provider = $providers->get( $provider_slug, $account_name, 'builder' ) ) {
		et_core_die( esc_html__( 'Configuration Error: Invalid data.', 'et_builder' ) );
	}

	$args = array(
		'list_id'   => sanitize_text_field( $utils->array_get( $_POST, 'et_list_id' ) ),
		'email'     => sanitize_text_field( $utils->array_get( $_POST, 'et_email' ) ),
		'name'      => sanitize_text_field( $utils->array_get( $_POST, 'et_firstname' ) ),
		'last_name' => sanitize_text_field( $utils->array_get( $_POST, 'et_lastname' ) ),
	);

	if ( ! is_email( $args['email'] ) ) {
		et_core_die( esc_html__( 'Please input a valid email address.', 'et_builder' ) );
	}

	if ( empty( $args['list_id'] ) ) {
		et_core_die( esc_html__( 'Configuration Error: No list has been selected for this form.', 'et_builder' ) );
	}

	et_builder_email_maybe_migrate_accounts();

	$result = $provider->subscribe( $args );

	if ( 'success' === $result ) {
		$result  = array( 'success' => true );
	} else {
		$message = esc_html__( 'Subscription Error: ', 'et_builder' );
		$result  = array( 'error' => $message . $result );
	}

	die( json_encode( $result ) );
}
add_action( 'wp_ajax_et_pb_submit_subscribe_form', 'et_pb_submit_subscribe_form' );
add_action( 'wp_ajax_nopriv_et_pb_submit_subscribe_form', 'et_pb_submit_subscribe_form' );
endif;


if ( ! function_exists( 'et_is_builder_plugin_active' ) ):
/**
 * Is Builder plugin active?
 *
 * @return bool  True - if the plugin is active
 */
function et_is_builder_plugin_active() {
	return (bool) defined( 'ET_BUILDER_PLUGIN_ACTIVE' );
}
endif;

/**
 * Saves the Role Settings into WP database
 * @return void
 */
function et_pb_save_role_settings() {
	if ( ! wp_verify_nonce( $_POST['et_pb_save_roles_nonce'] , 'et_roles_nonce' ) ) {
		die( -1 );
	}

	if ( ! current_user_can( 'manage_options' ) ) {
		die( -1 );
	}

	// handle received data and convert json string to array
	$data_json = str_replace( '\\', '' ,  $_POST['et_pb_options_all'] );
	$data = json_decode( $data_json, true );
	$processed_options = array();

	// convert settings string for each role into array and save it into et_pb_role_settings option
	if ( ! empty( $data ) ) {
		foreach( $data as $role => $settings ) {
			parse_str( $data[ $role ], $processed_options[ $role ] );
		}
	}

	update_option( 'et_pb_role_settings', $processed_options );
	// set the flag to reload backbone templates and make sure all the role settings applied correctly right away
	et_update_option( 'et_pb_clear_templates_cache', true );

	die();
}
add_action( 'wp_ajax_et_pb_save_role_settings', 'et_pb_save_role_settings' );

function et_pb_execute_content_shortcodes() {
	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) {
		die( -1 );
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$unprocessed_data = str_replace( '\\', '', $_POST['et_pb_unprocessed_data'] );

	echo do_shortcode( $unprocessed_data );

	die();
}
add_action( 'wp_ajax_et_pb_execute_content_shortcodes', 'et_pb_execute_content_shortcodes' );

if ( ! function_exists( 'et_pb_register_posttypes' ) ) :
function et_pb_register_posttypes() {
	$labels = array(
		'name'               => esc_html__( 'Projects', 'et_builder' ),
		'singular_name'      => esc_html__( 'Project', 'et_builder' ),
		'add_new'            => esc_html__( 'Add New', 'et_builder' ),
		'add_new_item'       => esc_html__( 'Add New Project', 'et_builder' ),
		'edit_item'          => esc_html__( 'Edit Project', 'et_builder' ),
		'new_item'           => esc_html__( 'New Project', 'et_builder' ),
		'all_items'          => esc_html__( 'All Projects', 'et_builder' ),
		'view_item'          => esc_html__( 'View Project', 'et_builder' ),
		'search_items'       => esc_html__( 'Search Projects', 'et_builder' ),
		'not_found'          => esc_html__( 'Nothing found', 'et_builder' ),
		'not_found_in_trash' => esc_html__( 'Nothing found in Trash', 'et_builder' ),
		'parent_item_colon'  => '',
	);

	$args = array(
		'labels'             => $labels,
		'public'             => true,
		'publicly_queryable' => true,
		'show_ui'            => true,
		'can_export'         => true,
		'show_in_nav_menus'  => true,
		'query_var'          => true,
		'has_archive'        => true,
		'rewrite'            => apply_filters( 'et_project_posttype_rewrite_args', array(
			'feeds'      => true,
			'slug'       => 'project',
			'with_front' => false,
		) ),
		'capability_type'    => 'post',
		'hierarchical'       => false,
		'menu_position'      => null,
		'supports'           => array( 'title', 'author', 'editor', 'thumbnail', 'excerpt', 'comments', 'revisions', 'custom-fields' ),
	);

	register_post_type( 'project', apply_filters( 'et_project_posttype_args', $args ) );

	$labels = array(
		'name'              => esc_html__( 'Project Categories', 'et_builder' ),
		'singular_name'     => esc_html__( 'Project Category', 'et_builder' ),
		'search_items'      => esc_html__( 'Search Categories', 'et_builder' ),
		'all_items'         => esc_html__( 'All Categories', 'et_builder' ),
		'parent_item'       => esc_html__( 'Parent Category', 'et_builder' ),
		'parent_item_colon' => esc_html__( 'Parent Category:', 'et_builder' ),
		'edit_item'         => esc_html__( 'Edit Category', 'et_builder' ),
		'update_item'       => esc_html__( 'Update Category', 'et_builder' ),
		'add_new_item'      => esc_html__( 'Add New Category', 'et_builder' ),
		'new_item_name'     => esc_html__( 'New Category Name', 'et_builder' ),
		'menu_name'         => esc_html__( 'Categories', 'et_builder' ),
	);

	register_taxonomy( 'project_category', array( 'project' ), array(
		'hierarchical'      => true,
		'labels'            => $labels,
		'show_ui'           => true,
		'show_admin_column' => true,
		'query_var'         => true,
	) );

	$labels = array(
		'name'              => esc_html__( 'Project Tags', 'et_builder' ),
		'singular_name'     => esc_html__( 'Project Tag', 'et_builder' ),
		'search_items'      => esc_html__( 'Search Tags', 'et_builder' ),
		'all_items'         => esc_html__( 'All Tags', 'et_builder' ),
		'parent_item'       => esc_html__( 'Parent Tag', 'et_builder' ),
		'parent_item_colon' => esc_html__( 'Parent Tag:', 'et_builder' ),
		'edit_item'         => esc_html__( 'Edit Tag', 'et_builder' ),
		'update_item'       => esc_html__( 'Update Tag', 'et_builder' ),
		'add_new_item'      => esc_html__( 'Add New Tag', 'et_builder' ),
		'new_item_name'     => esc_html__( 'New Tag Name', 'et_builder' ),
		'menu_name'         => esc_html__( 'Tags', 'et_builder' ),
	);

	register_taxonomy( 'project_tag', array( 'project' ), array(
		'hierarchical'      => false,
		'labels'            => $labels,
		'show_ui'           => true,
		'show_admin_column' => true,
		'query_var'         => true,
	) );
}
endif;

function et_admin_backbone_templates_being_loaded() {
	if ( ! is_admin() ) {
		return false;
	}

	if ( ! ( defined( 'DOING_AJAX' ) && DOING_AJAX ) ) {
		return false;
	}

	if ( ! isset( $_POST['action'] ) || 'et_pb_get_backbone_templates' !== $_POST['action'] ) {
		return false;
	}

	if ( ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) {
		return false;
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		return false;
	}

	return true;
}

if ( ! function_exists( 'et_pb_attempt_memory_limit_increase' ) ) :
function et_pb_attempt_memory_limit_increase() {
	if ( ! isset( $_POST['et_admin_load_nonce'] ) || ! wp_verify_nonce( $_POST['et_admin_load_nonce'], 'et_admin_load_nonce' ) ) {
		die( -1 );
	}

	if ( ! current_user_can( 'manage_options' ) ) {
		die( -1 );
	}

	if ( et_increase_memory_limit() ) {
		et_update_option( 'set_memory_limit', '1' );

		die( json_encode( array(
			'success' => true,
		) ) );
	} else {
		die( json_encode( array(
			'error' => true,
		) ) );
	}

	die();
}
endif;

add_action( 'wp_ajax_et_pb_increase_memory_limit', 'et_pb_attempt_memory_limit_increase' );

if ( ! function_exists( 'et_reset_memory_limit_increase' ) ) :
function et_reset_memory_limit_increase() {
	if ( ! isset( $_POST['et_builder_reset_memory_limit_nonce'] ) || ! wp_verify_nonce( $_POST['et_builder_reset_memory_limit_nonce'], 'et_builder_reset_memory_limit_nonce' ) ) {
		die( -1 );
	}

	if ( ! current_user_can( 'manage_options' ) ) {
		die( -1 );
	}

	if ( et_get_option( 'set_memory_limit' ) ) {
		et_delete_option( 'set_memory_limit' );
	}

	die( 'success' );
}
endif;

add_action( 'wp_ajax_et_reset_memory_limit_increase', 'et_reset_memory_limit_increase' );

if ( ! function_exists( 'et_builder_get_cache_notification_modal' ) ) :
function et_builder_get_cache_notification_modal() {
	$cache_plugin_message = '';

	if ( false !== ( $cache_plugin = et_pb_detect_cache_plugins() ) ) {
		$cache_plugin_message = sprintf(
			esc_html__( 'You are using the %1$s plugin. We recommend clearing the plugin cache after updating your theme.', 'et_builder' ),
			esc_html( $cache_plugin['name'] )
		);

		$cache_plugin_message = '<p>' . $cache_plugin_message . '</p>';

		$cache_plugin_message .= sprintf(
			'<a href="%1$s" class="et_builder_modal_action_button" target="_blank">%2$s</a>',
			esc_url( admin_url( $cache_plugin['page'] ) ),
			esc_html__( 'Clear Plugin Cache', 'et_builder' )
		);
	}

	$browser_cache_message = '<p>' . esc_html__( 'Builder files may also be cached in your browser. Please clear your browser cache.', 'et_builder' ) . '</p>';

	$browser_cache_message .= sprintf(
		'<a href="http://www.refreshyourcache.com/en/home/" class="et_builder_modal_action_button" target="_blank">%1$s</a>',
		esc_html__( 'Clear Browser Cache', 'et_builder' )
	);

	$output = sprintf(
		'<div class="et_pb_modal_overlay et_modal_on_top et_pb_failure_notification_modal et_pb_new_template_modal">
			<div class="et_pb_prompt_modal">
				<h2>%1$s</h2>

				<div class="et_pb_prompt_modal_inside">
					<p>%2$s</p>
					%4$s
					%5$s
					<p>%6$s</p>
				</div>

				<a href="#"" class="et_pb_prompt_dont_proceed et-pb-modal-close"></a>

				<div class="et_pb_prompt_buttons">
					<br>
					<span class="spinner"></span>
					<a href="#" class="et_pb_reload_builder button-primary et_pb_prompt_proceed">%3$s</a>
				</div>
			</div>
		</div>',
		esc_html__( 'Builder Cache Warning', 'et_builder' ),
		esc_html__( 'The Divi Builder has been updated, however your browser is loading an old cached version of the builder. Loading old files can cause the builder to malfunction.', 'et_builder' ),
		esc_html__( 'Reload The Builder', 'et_builder' ),
		$cache_plugin_message,
		$browser_cache_message,
		esc_html__( 'If you have cleared your plugin cache and browser cache, but still get this warning, then your files may be cached at the DNS or Server level. Contact your host or CDN for assistance.', 'et_builder' )
	);

	return $output;
}
endif;

if ( ! function_exists( 'et_builder_get_failure_notification_modal' ) ) :
function et_builder_get_failure_notification_modal() {
	$warnings = et_builder_get_warnings();

	if ( false === $warnings ) {
		return '';
	}

	$messages = '';
	$i = 1;

	foreach( $warnings as $warning ) {
		$messages .= sprintf(
			'<p><strong>%1$s. </strong>%2$s</p>',
			esc_html( $i ),
			$warning
		);

		$i++;
	}

	$output = sprintf(
		'<div class="et-core-modal-overlay et-builder-timeout et-core-active">
			<div class="et-core-modal">
				<div class="et-core-modal-header">
					<h3 class="et-core-modal-title">%1$s</h3>
					<a href="#" class="et-core-modal-close" data-et-core-modal="close"></a>
				</div>

				<div class="et-core-modal-content">
					<p><strong>%4$s</strong></p>

					%2$s
				</div>

				<div class="et_pb_prompt_buttons">
					<br>
					<span class="spinner"></span>
					<a href="#" class="et-core-modal-action">%3$s</a>
				</div>
			</div>
		</div>',
		esc_html__( 'Divi Builder Timeout', 'et_builder' ),
		$messages,
		esc_html__( 'Reload The Builder', 'et_builder' ),
		esc_html__( 'Oops, it looks like the Divi Builder failed to load. Performing the following actions may help solve the problem.', 'et_builder' )
	);

	return $output;
}
endif;

if ( ! function_exists( 'et_builder_get_exit_notification_modal' ) ) :
function et_builder_get_exit_notification_modal() {
	$output = sprintf(
		'<div class="et-core-modal-overlay et-core-modal-two-buttons et-builder-exit-modal et-core-active">
			<div class="et-core-modal">
				<div class="et-core-modal-header">
					<h3 class="et-core-modal-title">%1$s</h3>
					<a href="#" class="et-core-modal-close" data-et-core-modal="close"></a>
				</div>

				<div class="et-core-modal-content">
					<p>%2$s</p>
				</div>

				<div class="et_pb_prompt_buttons">
					<br>
					<span class="spinner"></span>
					<a href="#" class="et-core-modal-action et-core-modal-action-secondary">%3$s</a>
					<a href="#" class="et-core-modal-action">%4$s</a>
				</div>
			</div>
		</div>',
		esc_html__( 'You Have Unsaved Changes', 'et_builder' ),
		et_get_safe_localization( __( 'Your page contains changes that have not been saved. If you close the builder without saving, these changes will be lost. If you would like to leave the builder and save all changes, please select <strong>Save & Exit</strong>. If you would like to discard all recent changes, choose <strong>Discard & Exit</strong>.', 'et_builder' ) ),
		esc_html__( 'Discard & Exit', 'et_builder' ),
		esc_html__( 'Save & Exit', 'et_builder' )
	);

	return $output;
}
endif;

if ( ! function_exists( 'et_builder_get_browser_autosave_notification_modal' ) ) :
function et_builder_get_browser_autosave_notification_modal() {
	$output = sprintf(
		'<div class="et-core-modal-overlay et-core-modal-two-buttons et-builder-autosave-modal et-core-active">
			<div class="et-core-modal">
				<div class="et-core-modal-header">
					<h3 class="et-core-modal-title">%1$s</h3>
					<a href="#" class="et-core-modal-close" data-et-core-modal="close"></a>
				</div>
				<div class="et-core-modal-content">
					<p>%2$s</p>
				</div>
				<div class="et_pb_prompt_buttons">
					<br>
					<span class="spinner"></span>
					<a href="#" class="et-core-modal-action et-core-modal-action-dont-restore et-core-modal-action-secondary">%3$s</a>
					<a href="#" class="et-core-modal-action et-core-modal-action-restore">%4$s</a>
				</div>
			</div>
		</div>',
		esc_html__( 'A Browser Backup Exists', 'et_builder' ),
		et_get_safe_localization( __( 'A browser backup exists for this post that is newer than  the version you are currently viewing. This backup was captured during your previous editing session, but you never saved it. Would you like to restore this backup and continue editing where you left off?', 'et_builder' ) ),
		esc_html__( "Don't Restore", 'et_builder' ), // left button
		esc_html__( 'Restore', 'et_builder' ) // right button
	);
	return $output;
}
endif;

if ( ! function_exists( 'et_builder_get_server_autosave_notification_modal' ) ) :
function et_builder_get_server_autosave_notification_modal() {
	$output = sprintf(
		'<div class="et-core-modal-overlay et-core-modal-two-buttons et-builder-autosave-modal et-core-active">
			<div class="et-core-modal">
				<div class="et-core-modal-header">
					<h3 class="et-core-modal-title">%1$s</h3>
					<a href="#" class="et-core-modal-close" data-et-core-modal="close"></a>
				</div>
				<div class="et-core-modal-content">
					<p>%2$s</p>
				</div>
				<div class="et_pb_prompt_buttons">
					<br>
					<span class="spinner"></span>
					<a href="#" class="et-core-modal-action et-core-modal-action-dont-restore et-core-modal-action-secondary">%3$s</a>
					<a href="#" class="et-core-modal-action et-core-modal-action-restore">%4$s</a>
				</div>
			</div>
		</div>',
		esc_html__( 'An Autosave Exists', 'et_builder' ),
		et_get_safe_localization( __( 'A recent autosave exists for this post that is newer than the version you are currently viewing. This autosave was captured during your previous editing session, but you never saved it. Would you like to restore this autosave and continue editing where you left off?', 'et_builder' ) ),
		esc_html__( "Don't Restore", 'et_builder' ), // left button
		esc_html__( 'Restore', 'et_builder' ) // right button
	);
	return $output;
}
endif;

if ( ! function_exists( 'et_builder_get_unsaved_notification_modal' ) ) :
function et_builder_get_unsaved_notification_modal() {
	$output = sprintf(
		'<div class="et-core-modal-overlay et-core-modal-two-buttons et-builder-unsaved-modal et-core-active">
			<div class="et-core-modal">
				<div class="et-core-modal-header">
					<h3 class="et-core-modal-title">%1$s</h3>
					<a href="#" class="et-core-modal-close" data-et-core-modal="close"></a>
				</div>
				<div class="et-core-modal-content">
					<p>%2$s</p>
					<p>%3$s</p>
					<p>%4$s</p>
				</div>
				<div class="et_pb_prompt_buttons">
					<br>
					<span class="spinner"></span>
					<a href="#" class="et-core-modal-action et-core-modal-action-secondary">%5$s</a>
					<a href="#" class="et-core-modal-action et-core-modal-action-primary">%6$s</a>
				</div>
			</div>
		</div>',
		esc_html__( 'Your Save Has Failed', 'et_builder' ),
		et_get_safe_localization( __( 'An error has occurred while saving your page. Various problems can cause a save to fail, such as a lack of server resources, firewall blockages, plugin conflicts or server misconfiguration. You can try saving again by clicking Try Again, or you can download a backup of your unsaved page by clicking Download Backup. Backups can be restored using the portability system while next editing your page.', 'et_builder' ) ),
		et_get_safe_localization( __( 'Contacting your host and asking them to increase the following PHP variables may help: memory_limit, max_execution_time, upload_max_filesize, post_max_size, max_input_time, max_input_vars. In addition, auditing your firewall error log (such as ModSecurity) may reveal false positives that are preventing saves from completing.', 'et_builder' ) ),
		et_get_safe_localization( __( 'Lastly, it is recommended that you temporarily disable all WordPress plugins and browser extensions and try to save again to determine if something is causing a conflict.', 'et_builder' ) ),
		esc_html__( 'Try Again', 'et_builder' ),
		esc_html__( 'Download Backup', 'et_builder' )
	);
	return $output;
}
endif;

if ( ! function_exists( 'et_builder_get_warnings' ) ) :
function et_builder_get_warnings() {
	if ( ! current_user_can( 'manage_options' ) ) {
		return false;
	}

	$warnings = array();


	// WP_DEBUG check
	if ( defined( 'WP_DEBUG' ) && true === WP_DEBUG ) {
		$warnings[] = sprintf(
			'%1$s. <a href="https://codex.wordpress.org/Debugging_in_WordPress" class="et_builder_modal_action_button" target="_blank">%2$s</a>',
			esc_html__( 'You have WP_DEBUG enabled. Please disable this setting in wp-config.php', 'et_builder' ),
			esc_html__( 'Disable Debug Mode', 'et_builder' )
		);
	}


	// Plugins check
	$third_party_plugins_active = false;

	$excluded_plugins = array(
		'wordpress-importer/wordpress-importer.php',
		'divi-builder/divi-builder.php',
		'elegant-themes-updater/elegant-themes-updater.php',
		'et-security-patcher/et-security-patcher.php',
	);

	$active_plugins = get_option( 'active_plugins' );

	if ( is_array( $active_plugins ) && ! empty( $active_plugins ) ) {
		foreach ( $active_plugins as $plugin ) {
			if ( in_array( $plugin, $excluded_plugins ) ) {
				continue;
			}

			$third_party_plugins_active = true;

			break;
		}
	}

	if ( $third_party_plugins_active ) {
		$warnings[] = sprintf(
			'%1$s <a href="%3$s" class="et_builder_modal_action_button" target="_blank">%2$s</a>',
			esc_html__( 'You are using third party plugins. Try disabling each plugin to see if one is causing a conflict.', 'et_builder' ),
			esc_html__( 'Manage Your Plugins', 'et_builder' ),
			esc_url( admin_url( 'plugins.php' ) )
		);
	}


	// WordPress update check
	require_once( ABSPATH . 'wp-admin/includes/update.php' );

	$updates = get_core_updates();

	if ( isset( $updates[0]->response ) && 'latest' != $updates[0]->response ) {
		$warnings[] = sprintf(
			'%1$s <a href="%3$s" class="et_builder_modal_action_button" target="_blank">%2$s</a>',
			esc_html__( 'You are using an outdated version of WordPress. Please upgrade.', 'et_builder' ),
			esc_html__( 'Upgrade WordPress', 'et_builder' ),
			esc_url( admin_url( 'update-core.php' ) )
		);
	}


	// Memory check
	global $et_current_memory_limit;

	if ( ! empty( $et_current_memory_limit ) && intval( $et_current_memory_limit ) < 128 ) {
		$class = ' et_builder_increase_memory';

		if ( true === strpos( ini_get( 'disable_functions' ), 'ini_set' ) ) {
			$class = '';
		}

		$warnings[] = sprintf(
			'%1$s. <a href="http://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP" class="et_builder_modal_action_button%3$s" target="_blank">%2$s</a>',
			esc_html__( 'Please increase your PHP Memory Limit to 128M. You can return the value to default via the Divi Theme Options in the future', 'et_builder' ),
			esc_html__( 'Increase Your Memory Limit Now', 'et_builder' ),
			esc_attr( $class )
		);
	}


	// Version check
	$et_update_themes = get_site_transient( 'et_update_themes' );

	if ( is_object( $et_update_themes ) && isset( $et_update_themes->response ) ) {
		$theme_info = wp_get_theme();

		if ( is_child_theme() ) {
			$theme_info = wp_get_theme( $theme_info->parent_theme );
		}

		$name    = $theme_info->get( 'Name' );
		$version = $theme_info->get( 'Version' );

		if ( isset( $et_update_themes->response[ $name ] ) && isset( $et_update_themes->response[ $name ]['new_version'] ) && version_compare( $version, $et_update_themes->response[ $name ]['new_version'], '<' ) ) {
			$warnings[] = sprintf(
				'%1$s <a href="%3$s" class="et_builder_modal_action_button" target="_blank">%2$s</a>',
				sprintf(
					esc_html__( 'You are using an outdated version of the theme. The latest version is %1$s', 'et_builder' ),
					esc_html( $et_update_themes->response[ $name ]['new_version'] )
				),
				esc_html__( 'Upgrade', 'et_builder' ),
				esc_url( admin_url( 'themes.php' ) )
			);
		}
	}

	if ( empty( $warnings ) ) {
		return false;
	}

	return $warnings;
}
endif;

if ( ! function_exists( 'et_increase_memory_limit' ) ) :
function et_increase_memory_limit() {
	if ( ! is_admin() ) {
		return;
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		return;
	}

	// proceed only if current memory limit < 128
	if ( intval( @ini_get( 'memory_limit' ) ) >= 128 ) {
		return false;
	}

	if ( true === strpos( ini_get( 'disable_functions' ), 'ini_set' ) ) {
		return false;
	}

	if ( @ini_set( 'memory_limit', '128M' ) ) {
		return true;
	}

	return false;
}
endif;

if ( ! function_exists( 'et_maybe_increase_memory_limit' ) ) :
function et_maybe_increase_memory_limit() {
	global $pagenow;

	if ( ! is_admin() ) {
		return;
	}

	if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
		return;
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		return;
	}

	if ( empty( $pagenow ) ) {
		return;
	}

	// increase memory limit on Edit Post page only
	if ( ! in_array( $pagenow, array( 'post.php', 'post-new.php' ) ) ) {
		return;
	}

	/**
	 * check if a user clicked "Increase Memory Limit" button
	 * in the "Failure Notification" modal window
	 */
	if ( ! et_should_memory_limit_increase() ) {
		return;
	}

	et_increase_memory_limit();
}
endif;
add_action( 'admin_init', 'et_maybe_increase_memory_limit' );

if ( ! function_exists( 'et_should_memory_limit_increase' ) ) :
function et_should_memory_limit_increase() {
	if ( '1' === ( $memory_limit = et_get_option( 'set_memory_limit' ) ) ) {
		return true;
	}

	return false;
}
endif;

if ( ! function_exists( 'et_reset_memory_limit_increase_setting' ) ) :
function et_reset_memory_limit_increase_setting() {
	wp_enqueue_script( 'et-builder-reset-memory-limit-increase', ET_BUILDER_URI . '/scripts/reset_memory_limit_increase_setting.js', array( 'jquery' ), ET_BUILDER_VERSION, true );
	wp_localize_script( 'et-builder-reset-memory-limit-increase', 'et_reset_memory_limit_increase', array(
		'et_builder_reset_memory_limit_nonce' => wp_create_nonce( 'et_builder_reset_memory_limit_nonce' ),
	) );

	printf(
		'<button class="et_disable_memory_limit_increase button button-primary button-large">%1$s</button>',
		esc_html__( 'Disable Memory Limit Increase' )
	);
}
endif;

if ( ! function_exists( 'et_pb_detect_cache_plugins' ) ) :
/**
 * Detect the activated cache plugins and return the link to plugin options and return its page link or false
 * @return string or bool
 */
function et_pb_detect_cache_plugins() {
	if ( function_exists( 'edd_w3edge_w3tc_activate_license' ) ) {
		return array(
			'name' => 'W3 Total Cache',
			'page' => 'admin.php?page=w3tc_pgcache',
		);
	}

	if ( function_exists( 'wpsupercache_activate' ) ) {
		return array(
			'name' => 'WP Super Cache',
			'page' => 'options-general.php?page=wpsupercache',
		);
	}

	if ( class_exists( 'HyperCache' ) ) {
		return array(
			'name' => 'Hyper Cache',
			'page' => 'options-general.php?page=hyper-cache%2Foptions.php',
		);
	}

	if ( class_exists( '\zencache\plugin' ) ) {
		return array(
			'name' => 'ZenCache',
			'page' => 'admin.php?page=zencache',
		);
	}

	if ( class_exists( 'WpFastestCache' ) ) {
		return array(
			'name' => 'WP Fastest Cache',
			'page' => 'admin.php?page=WpFastestCacheOptions',
		);
	}

	if ( '1' === get_option( 'wordfenceActivated' ) ) {
		// Wordfence removed their support of Falcon cache in v6.2.8, so we'll
		// just check against their `cacheType` setting (if it exists).
		if ( class_exists( 'wfConfig' ) && 'falcon' == wfConfig::get( 'cacheType' ) ) {
			return array(
				'name' => 'Wordfence',
				'page' => 'admin.php?page=WordfenceSitePerf',
			);
		}
	}

	if ( function_exists( 'cachify_autoload' ) ) {
		return array(
			'name' => 'Cachify',
			'page' => 'options-general.php?page=cachify',
		);
	}

	if ( class_exists( 'FlexiCache' ) ) {
		return array(
			'name' => 'FlexiCache',
			'page' => 'options-general.php?page=flexicache',
		);
	}

	if ( function_exists( 'rocket_init' ) ) {
		return array(
			'name' => 'WP Rocket',
			'page' => 'options-general.php?page=wprocket',
		);
	}

	if ( function_exists( 'cloudflare_init' ) ) {
		return array(
			'name' => 'CloudFlare',
			'page' => 'options-general.php?page=cloudflare',
		);
	}

	return false;
}
endif;

function et_pb_force_regenerate_templates() {
	// add option to indicate that templates cache should be updated in case of term added/removed/updated
	et_update_option( 'et_pb_clear_templates_cache', true );
}

add_action( 'created_term', 'et_pb_force_regenerate_templates' );
add_action( 'edited_term', 'et_pb_force_regenerate_templates' );
add_action( 'delete_term', 'et_pb_force_regenerate_templates' );

function et_pb_ab_get_current_ab_module_id( $test_id, $subject_index = false ) {
	$all_subjects = false !== ( $all_subjects_raw = get_post_meta( $test_id, '_et_pb_ab_subjects' , true ) ) ? explode( ',', $all_subjects_raw ) : array();

	if ( false === $subject_index ) {
		$current_subject_index = false !== ( $saved_next_subject = get_post_meta( $test_id, '_et_pb_ab_next_subject' , true ) ) ? (int) $saved_next_subject : 0;
	} else {
		$current_subject_index = $subject_index;
	}

	if ( empty( $all_subjects ) ) {
		return 0;
	}

	if ( ! isset( $all_subjects[ $current_subject_index ] ) ) {
		return $all_subjects[0];
	}

	return $all_subjects[ $current_subject_index ];
}

function et_pb_ab_get_saved_ab_module_id( $test_id, $client_id ) {
	global $wpdb;

	$table_name = $wpdb->prefix . 'et_divi_ab_testing_clients';
	$saved_module_id = false;

	if ( $wpdb->get_var( "SHOW TABLES LIKE '$table_name'" ) == $table_name ) {
		// construct sql query to get saved module ID from db for current client
		$sql = "SELECT subject_id FROM $table_name WHERE test_id = %d AND client_id = %s";
		$sql_args = array(
			intval( $test_id ),
			sanitize_text_field( $client_id ),
		);

		$saved_module_data = $wpdb->get_results( $wpdb->prepare( $sql, $sql_args ), ARRAY_A );

		if ( empty( $saved_module_data ) ) {
			return false;
		}

		$saved_module_id = $saved_module_data[0]['subject_id'];
	}

	return $saved_module_id;
}

function et_pb_ab_increment_current_ab_module_id( $test_id, $user_unique_id ) {
	global $wpdb;

	$table_name = $wpdb->prefix . 'et_divi_ab_testing_clients';
	$all_subjects = false !== ( $all_subjects_raw = get_post_meta( $test_id, '_et_pb_ab_subjects' , true ) ) ? explode( ',', $all_subjects_raw ) : array();
	$current_subject_index = false !== ( $saved_next_subject = get_post_meta( $test_id, '_et_pb_ab_next_subject' , true ) ) ? (int) $saved_next_subject : 0;

	if ( empty( $all_subjects ) ) {
		return;
	}

	// sanitize and set vars
	$test_id = intval( $test_id );
	$current_subject_index = intval( $current_subject_index );
	$user_unique_id = sanitize_text_field( $user_unique_id );

	// update the subject id in db for the current client and current test
	$wpdb->insert(
		$table_name,
		array(
			'test_id'    => $test_id,
			'subject_id' => $current_subject_index,
			'client_id'  => $user_unique_id,
		),
		array(
			'%d', // test_id
			'%d', // subject_id
			'%s', // client_id
		)
	);

	// increment the index of next subject, set to 0 if it's a last subject in the list
	$next_subject_index = ( count( $all_subjects ) - 1 ) < ( $current_subject_index + 1 ) ? 0 : $current_subject_index + 1;

	update_post_meta( $test_id, '_et_pb_ab_next_subject' , $next_subject_index );
}

/**
 * Add the record into Split testing log table
 *
 * @return void
 */
function et_pb_add_stats_record( $stats_data_array ) {
	global $wpdb;

	$table_name = $wpdb->prefix . 'et_divi_ab_testing_stats';

	$record_date = current_time( 'mysql' );
	$client_unique_id = et_pb_get_visitor_id();

	// sanitize and set vars
	$test_id = intval( $stats_data_array['test_id'] );
	$subject_id = intval( $stats_data_array['subject_id'] );
	$record_type = sanitize_text_field( $stats_data_array['record_type'] );
	$record_date = sanitize_text_field( $record_date );

	// construct sql query to find out whether or not event logged for current visitor
	$sql = "SELECT COUNT(*) FROM $table_name WHERE test_id = %d AND subject_id = %d AND event = %s AND client_id = %s";
	$sql_args = array(
		$test_id,
		$subject_id,
		$record_type,
		$client_unique_id
	);

	// do not proceed if event already logged for current visitor
	if ( 0 < $wpdb->get_var( $wpdb->prepare( $sql, $sql_args ) ) ) {
		return;
	}

	$wpdb->insert(
		$table_name,
		array(
			'record_date' => $record_date,
			'test_id'     => $test_id,
			'subject_id'  => $subject_id,
			'event'       => $record_type,
			'client_id'   => $client_unique_id,
		),
		array(
			'%s', // record_date
			'%d', // test_id
			'%d', // subject_id
			'%s', // event
			'%s', // client_id
		)
	);
}


function et_pb_ab_get_subject_id() {
	if ( isset( $_POST['et_frontend_nonce'] ) && ! wp_verify_nonce( $_POST['et_frontend_nonce'], 'et_frontend_nonce' ) ) {
		die( -1 );
	}

	$test_id = intval( $_POST['et_pb_ab_test_id'] );

	$user_unique_id = et_pb_get_visitor_id();
	$saved_module_id = et_pb_ab_get_saved_ab_module_id( $test_id, $user_unique_id );

	$current_ab_module_id = et_pb_ab_get_current_ab_module_id( $test_id, $saved_module_id );
	$current_ab_module_id = intval( $current_ab_module_id );

	if ( false === $saved_module_id ) {
		// log the view_page event
		et_pb_add_stats_record( array(
				'test_id'     => $test_id,
				'subject_id'  => $current_ab_module_id,
				'record_type' => 'view_page',
			)
		);

		// increment the module id for the next time
		et_pb_ab_increment_current_ab_module_id( $test_id, $user_unique_id );
	}

	// retrieve the cached subjects HTML
	$subjects_cache = get_post_meta( $test_id, 'et_pb_subjects_cache', true );

	$result = array(
		'id'      => $current_ab_module_id,
		'content' => isset( $subjects_cache[ $current_ab_module_id ] ) ? $subjects_cache[ $current_ab_module_id ] : '',
	);

	die( json_encode( $result ) );
}
add_action( 'wp_ajax_et_pb_ab_get_subject_id', 'et_pb_ab_get_subject_id' );
add_action( 'wp_ajax_nopriv_et_pb_ab_get_subject_id', 'et_pb_ab_get_subject_id' );

/**
 * Generate the user id which is md5 hash from IP Address
 * @return string
 */
function et_pb_get_visitor_id() {
	$user_ip_addr = $_SERVER['REMOTE_ADDR'];

	/**
	 * Properly determine the user ID if proxy is used.
	 * Check whether the $_SERVER['HTTP_X_FORWARDED_FOR'] or $_SERVER['X_FORWARDED_FOR'] exist and use it
	 * Otherwise use $_SERVER['REMOTE_ADDR']
	 */
	if ( ! empty( $_SERVER['X_FORWARDED_FOR'] ) ) {
		$x_forwarded_array = explode( ',', $_SERVER['X_FORWARDED_FOR'] );

		if ( ! empty( $x_forwarded_array ) ) {
			$user_ip_addr = trim( $x_forwarded_array[0] );
		}
	} elseif ( ! empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
		$http_x_forwarded_array = explode( ',', $_SERVER['HTTP_X_FORWARDED_FOR'] );

		if ( ! empty( $http_x_forwarded_array ) ) {
			$user_ip_addr = trim( $http_x_forwarded_array[0] );
		}
	}

	// return the md5 hash from user IP address
	return md5( sanitize_text_field( $user_ip_addr ) );
}

/**
 * Register Builder portabilities.
 *
 * @since To define
 *
 * @return bool Always return true.
 */
function et_pb_register_builder_portabilities() {
	global $shortname;

	// Don't overwrite global.
	$_shortname = empty( $shortname ) ? 'divi' : $shortname;

	// Make sure the Portability is loaded.
	et_core_load_component( 'portability' );

	// Register the Roles Editor portability.
	et_core_portability_register( 'et_pb_roles', array(
		'name'   => esc_html__( 'Divi Role Editor Settings', 'et_builder' ),
		'type'   => 'options',
		'target' => 'et_pb_role_settings',
		'view'   => ( isset( $_GET['page'] ) && $_GET['page'] === "et_{$_shortname}_role_editor" ),
	) );

	// Register the Builder individual layouts portability.
	et_core_portability_register( 'et_builder', array(
		'name' =>  esc_html__( 'Divi Builder Layout', 'et_builder' ),
		'type' => 'post',
		'view' => ( function_exists( 'et_builder_should_load_framework' ) && et_builder_should_load_framework() ),
	) );

	// Register the Builder Layouts Post Type portability.
	et_core_portability_register( 'et_builder_layouts', array(
		'name' => esc_html__( 'Divi Builder Layouts', 'et_builder' ),
		'type'   => 'post_type',
		'target' => ET_BUILDER_LAYOUT_POST_TYPE,
		'view'   => ( isset( $_GET['post_type'] ) && $_GET['post_type'] === ET_BUILDER_LAYOUT_POST_TYPE ),
	) );
}
add_action( 'admin_init', 'et_pb_register_builder_portabilities' );

/**
 * Modify the portability export WP query.
 *
 * @since To define
 *
 * @return string New query.
 */
function et_pb_modify_portability_export_wp_query( $query ) {
	// Exclude predefined layout from export.
	return array_merge( $query, array(
		'meta_query' => array(
			'relation' => 'OR',
			array(
				'key'     => '_et_pb_predefined_layout',
				'compare' => 'NOT EXISTS',
			),
			array(
				'key'     => '_et_pb_predefined_layout',
				'value'   => 'on',
				'compare' => 'NOT LIKE',
			),
		),
	) );
}
add_filter( 'et_core_portability_export_wp_query_et_builder_layouts', 'et_pb_modify_portability_export_wp_query' );

/**
 * Check whether current page is pagebuilder preview page
 * @return bool
 */
function is_et_pb_preview() {
	global $wp_query;
	return ( 'true' === $wp_query->get( 'et_pb_preview' ) && isset( $_GET['et_pb_preview_nonce'] ) );
}

if ( ! function_exists( 'et_pb_is_pagebuilder_used' ) ) :
function et_pb_is_pagebuilder_used( $page_id ) {
	return ( 'on' === get_post_meta( $page_id, '_et_pb_use_builder', true ) );
}
endif;

if ( ! function_exists( 'et_fb_is_enabled' ) ) :
/**
 * @internal NOTE: Don't use this from outside builder code! {@see et_core_is_fb_enabled()}.
 *
 * @return bool
 */
function et_fb_is_enabled( $post_id = false ) {
	if ( ! $post_id ) {
		global $post;

		$post_id = isset( $post->ID ) ? $post->ID : false;
	}

	if ( is_admin() ) {
		return false;
	}

	if ( is_customize_preview() ) {
		return false;
	}

	if ( ! $post_id ) {
		return false;
	}

	if ( empty( $_GET['et_fb'] ) ) {
		return false;
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		return false;
	}

	if ( ! et_pb_is_pagebuilder_used( $post_id ) ) {
		return false;
	}

	if ( ! et_pb_is_allowed( 'use_visual_builder' ) ) {
		return false;
	}

	return true;
}
endif;

if ( ! function_exists( 'et_fb_auto_activate_builder' ) ) :
function et_fb_auto_activate_builder() {
	$post_id = get_the_ID();

	if (
		! is_admin() &&
		$post_id &&
		current_user_can( 'edit_posts' ) &&
		isset( $_GET['et_fb_activation_nonce'] ) &&
		wp_verify_nonce( $_GET['et_fb_activation_nonce' ], 'et_fb_activation_nonce_' . get_the_ID() )
	) {
		$set_content  = et_builder_set_content_activation( $post_id );
		$post_url     = get_permalink( $post_id );
		$redirect_url = $set_content ? add_query_arg( 'et_fb', '1', $post_url ) : $post_url;

		wp_redirect( $redirect_url );
		exit();
	}
}
endif;
add_action( 'template_redirect', 'et_fb_auto_activate_builder' );

function et_builder_set_content_activation( $post_id = false ) {
	$post = get_post( $post_id );

	if ( ! $post_id || ! $post || ! is_object( $post ) ) {
		return false;
	}

	// Update builder status
	$activate_builder = update_post_meta( $post_id, '_et_pb_use_builder', 'on' );

	if ( true !== $activate_builder ) {
		return false;
	}

	// If content already has a section, it means builder is active and activation has to be
	// skipped to avoid nested and unwanted builder structure
	if ( has_shortcode( $post->post_content, 'et_pb_section' ) ) {
		return true;
	}

	// Save old content
	$saved_old_content = get_post_meta( $post_id, '_et_pb_old_content', true );
	$save_old_content = update_post_meta( $post_id, '_et_pb_old_content', $post->post_content );

	if ( true !== $save_old_content && $saved_old_content !== $post->post_content && '' !== $post->post_content ) {
		return false;
	}

	// Re-format content
	$updated_content = '[et_pb_section admin_label="section"]
		[et_pb_row admin_label="row"]
			[et_pb_column type="4_4"]
				[et_pb_text admin_label="Text"]
					'. $post->post_content .'
				[/et_pb_text]
			[/et_pb_column]
		[/et_pb_row]
	[/et_pb_section]';

	// Update post_content
	$post->post_content = $updated_content;

	// Update post
	$update_post = wp_update_post( $post );

	if ( 0 < $update_post ) {
		setup_postdata( $post );
	}

	return 0 < $update_post;
}

if ( ! function_exists( 'et_builder_get_font_family' ) ) :
function et_builder_get_font_family( $font_name, $use_important = false ) {
	$user_fonts = et_builder_get_custom_fonts();
	$fonts = isset( $user_fonts[ $font_name ] ) ? $user_fonts : et_builder_get_fonts();
	$removed_fonts_mapping = et_builder_old_fonts_mapping();

	$font_style = $font_weight = '';

	$font_name_ms = isset( $fonts[ $font_name ] ) && isset( $fonts[ $font_name ]['add_ms_version'] ) ? "'{$font_name} MS', " : "";

	if ( isset( $removed_fonts_mapping[ $font_name ] ) && isset( $removed_fonts_mapping[ $font_name ]['parent_font'] ) ) {
		$font_style = $removed_fonts_mapping[ $font_name ]['styles'];
		$font_name = $removed_fonts_mapping[ $font_name ]['parent_font'];
	}

	if ( '' !== $font_style ) {
		$font_weight = sprintf( ' font-weight: %1$s;', esc_html( $font_style ) );
	}

	$style = sprintf( 'font-family: \'%1$s\', %5$s%2$s%3$s;%4$s',
		esc_html( $font_name ),
		isset( $fonts[ $font_name ] ) ? et_builder_get_websafe_font_stack( $fonts[ $font_name ]['type'] ) : 'sans-serif',
		( $use_important ? ' !important' : '' ),
		$font_weight,
		$font_name_ms
	);

	return $style;
}
endif;

if ( ! function_exists( 'et_builder_get_fonts' ) ) :
function et_builder_get_fonts( $settings = array() ) {
	$defaults = array(
		'prepend_standard_fonts' => true,
	);

	$settings = wp_parse_args( $settings, $defaults );

	$fonts = $settings['prepend_standard_fonts']
		? array_merge( et_builder_get_websafe_fonts(), et_builder_get_google_fonts() )
		: array_merge( et_builder_get_google_fonts(), et_builder_get_websafe_fonts() );

	return $fonts;
}
endif;

if ( ! function_exists( 'et_builder_get_websafe_font_stack' ) ) :
function et_builder_get_websafe_font_stack( $type = 'sans-serif' ) {
	$font_stack = $type;

	switch ( $type ) {
		case 'sans-serif':
			$font_stack = 'Helvetica, Arial, Lucida, sans-serif';
			break;
		case 'serif':
			$font_stack = 'Georgia, "Times New Roman", serif';
			break;
		case 'cursive':
			$font_stack = 'cursive';
			break;
	}

	return $font_stack;
}
endif;

if ( ! function_exists( 'et_builder_get_websafe_fonts' ) ) :
function et_builder_get_websafe_fonts() {
	$websafe_fonts = array(
		'Georgia' => array(
			'styles' 		=> '300italic,400italic,600italic,700italic,800italic,400,300,600,700,800',
			'character_set' => 'cyrillic,greek,latin',
			'type'			=> 'serif',
		),
		'Times New Roman' => array(
			'styles' 		=> '300italic,400italic,600italic,700italic,800italic,400,300,600,700,800',
			'character_set' => 'arabic,cyrillic,greek,hebrew,latin',
			'type'			=> 'serif',
		),
		'Arial' => array(
			'styles' 		=> '300italic,400italic,600italic,700italic,800italic,400,300,600,700,800',
			'character_set' => 'arabic,cyrillic,greek,hebrew,latin',
			'type'			=> 'sans-serif',
		),
		'Trebuchet' => array(
			'styles' 		=> '300italic,400italic,600italic,700italic,800italic,400,300,600,700,800',
			'character_set' => 'cyrillic,latin',
			'type'			=> 'sans-serif',
			'add_ms_version'=> true,
		),
		'Verdana' => array(
			'styles' 		=> '300italic,400italic,600italic,700italic,800italic,400,300,600,700,800',
			'character_set' => 'cyrillic,latin',
			'type'			=> 'sans-serif',
		),
	);

	$_websafe_fonts = array();

	foreach ( $websafe_fonts as $font_name => $settings ) {
		$settings['standard'] = true;

		$_websafe_fonts[ $font_name ] = $settings;
	}

	$websafe_fonts = $_websafe_fonts;

	return apply_filters( 'et_websafe_fonts', $websafe_fonts );
}
endif;

if ( ! function_exists( 'et_builder_get_font_weight_list' ) ) :
function et_builder_get_font_weight_list() {
	$default_font_weights_list = array( 
		'100' => esc_html__( 'Thin', 'et_builder' ),
		'200' => esc_html__( 'Ultra Light', 'et_builder' ),
		'300' => esc_html__( 'Light', 'et_builder' ),
		'400' => esc_html__( 'Regular', 'et_builder' ),
		'500' => esc_html__( 'Medium', 'et_builder' ),
		'600' => esc_html__( 'Semi Bold', 'et_builder' ),
		'700' => esc_html__( 'Bold', 'et_builder' ),
		'800' => esc_html__( 'Ultra Bold', 'et_builder' ),
		'900' => esc_html__( 'Heavy', 'et_builder' ),
	);

	return apply_filters( 'et_builder_all_font_weights', $default_font_weights_list );
}
endif;

if ( ! function_exists( 'et_builder_get_custom_fonts' ) ) :
function et_builder_get_custom_fonts() {
	$all_custom_fonts = get_option( 'et_uploaded_fonts', array() );
	return apply_filters( 'et_builder_custom_fonts', $all_custom_fonts );
}
endif;

function et_builder_old_fonts_mapping() {
	return array( 
		'Raleway Light' => array(
			'parent_font' => 'Raleway',
			'styles'      => '300',
		),
		'Roboto Light' => array(
			'parent_font' => 'Roboto',
			'styles'      => '100',
		),
		'Source Sans Pro Light' => array(
			'parent_font' => 'Source Sans Pro',
			'styles'      => '300',
		),
		'Lato Light' => array(
			'parent_font' => 'Lato',
			'styles'      => '300',
		),
		'Open Sans Light' => array(
			'parent_font' => 'Open Sans',
			'styles'      => '300',
		),
	);
}

if ( ! function_exists( 'et_builder_get_google_fonts' ) ) :
function et_builder_get_google_fonts() {
	// get hardcoded google fonts
	require_once( ET_BUILDER_DIR . 'google-fonts-data.php' );
	return et_pb_get_saved_google_fonts();

	$google_fonts_cache = get_option( 'et_google_fonts_cache', array() );

	if ( 'valid' === get_transient( 'et_google_fonts_cache_status' ) && ! empty( $google_fonts_cache ) ) {
		return apply_filters( 'et_builder_google_fonts', $google_fonts_cache );
	}

	$google_api_key = et_pb_get_google_api_key();
	$all_google_fonts = array();

	if ( '' !== $google_api_key ) {
		$google_fonts_api_url = sprintf( 'https://www.googleapis.com/webfonts/v1/webfonts?key=%1$s', $google_api_key );
		$google_fonts_response = wp_remote_get( esc_url_raw( $google_fonts_api_url ) );

		$all_google_fonts = is_array( $google_fonts_response ) ? json_decode( wp_remote_retrieve_body( $google_fonts_response ), true ) : array();
	}

	if ( ! empty( $all_google_fonts ) && ! empty( $all_google_fonts['items'] ) ) {
		$google_fonts = array();

		foreach ( $all_google_fonts['items'] as $font_data ) {
			$google_fonts[ $font_data['family'] ] = array(
				'styles'        => sanitize_text_field( implode( ',', $font_data['variants'] ) ),
				'character_set' => sanitize_text_field( implode( ',', $font_data['subsets'] ) ),
				'type'          => sanitize_text_field( $font_data['category'] ),
			);
		}
		// save google fonts and set the cache status to be valid for next 24 hours
		update_option( 'et_google_fonts_cache', $google_fonts );
		set_transient( 'et_google_fonts_cache_status', 'valid', 24 * HOUR_IN_SECONDS );
	} else if ( ! empty( $google_fonts_cache ) ) {
		// still use cache if it's not empty and fonts update failed
		return apply_filters( 'et_builder_google_fonts', $google_fonts_cache );
	} else {
		// get hardcoded google fonts
		require_once( ET_BUILDER_DIR . 'google-fonts-data.php' );
		$google_fonts = et_pb_get_saved_google_fonts();
	}

	return apply_filters( 'et_builder_google_fonts', $google_fonts );
}
endif;


if ( ! function_exists( 'et_pb_register_global_js' ) ) :
function et_pb_register_global_js() {
	wp_register_script( 'et_pb_admin_global_js', ET_BUILDER_URI . '/scripts/admin_global_functions.js', array(), ET_BUILDER_VERSION, true );
}
endif;
add_action( 'admin_enqueue_scripts', 'et_pb_register_global_js' );

function et_fb_backend_helper() {
	if ( ! wp_verify_nonce( $_POST['et_fb_nonce'] , 'et_fb_backend_helper_nonce' ) ) {
		die( -1 );
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$allowed_function_names = apply_filters( 'et_fb_ajax_function_names', array( 'do_shortcode' ) );

	$function_name = sanitize_text_field( $_POST['function_name'] );

	if ( ! in_array( $function_name, $allowed_function_names ) || ! is_callable( $function_name ) ) {
		die( -1 );
	}

	require ET_BUILDER_DIR . 'functions.php';

	$args = is_array( $_POST['args'] ) ? $_POST['args'] : (array) stripslashes( $_POST['args'] );

	echo call_user_func_array( $function_name, $args );

	die;
}
add_action( 'wp_ajax_et_fb_backend_helper', 'et_fb_backend_helper' );

/**
 * Use correct conditional tag for compute callback. Compute callback can use actual conditional tag
 * on page load. Compute callback relies on passed conditional tag params for update due to the
 * ajax-admin.php nature
 *
 * @param string conditional tag name
 * @param array  all conditional tags params
 * @return bool  conditional tag value
 */
function et_fb_conditional_tag( $name, $conditional_tags ) {

	if ( defined( 'DOING_AJAX' ) && isset( $conditional_tags[ $name ] ) ) {
		return $conditional_tags[ $name ] === 'true' ? true : false;
	}

	return is_callable( $name ) ? $name() : false;
}

/*
 * Retrieves the content of saved modules and process the shortcode into array.
 *
 */
function et_fb_get_saved_templates() {
	if ( ! wp_verify_nonce( $_POST['et_fb_retrieve_library_modules_nonce'], 'et_fb_retrieve_library_modules_nonce' ) ){
		die(-1);
	}

	if ( ! current_user_can( 'edit_posts' ) ) {
		die( -1 );
	}

	$layout_type = ! empty( $_POST['et_layout_type'] ) ? sanitize_text_field( $_POST['et_layout_type'] ) : 'layout';
	$module_width = ! empty( $_POST['et_module_width'] ) && 'module' === $layout_type ? sanitize_text_field( $_POST['et_module_width'] ) : '';
	$is_global = ! empty( $_POST['et_is_global'] ) ? sanitize_text_field( $_POST['et_is_global'] ) : 'all';
	$specialty_query = ! empty( $_POST['et_specialty_columns'] ) && 'row' === $layout_type ? sanitize_text_field( $_POST['et_specialty_columns'] ) : '0';
	$post_type = ! empty( $_POST['et_post_type'] ) ? sanitize_text_field( $_POST['et_post_type'] ) : 'post';
	$start_from = ! empty( $_POST['et_templates_start_page'] ) ? sanitize_text_field( $_POST['et_templates_start_page'] ) : 0;

	if ( 'all' === $is_global ) {
		$templates_data_regular = et_pb_retrieve_templates( $layout_type, $module_width, 'not_global', $specialty_query, $post_type, '', array( $start_from, 25 ) );
		$templates_data_global = et_pb_retrieve_templates( $layout_type, $module_width, 'global', $specialty_query, $post_type, '', array( $start_from, 25 ) );
		$templates_data = array_merge( $templates_data_regular, $templates_data_global );
	} else {
		$templates_data = et_pb_retrieve_templates( $layout_type, $module_width, $is_global, $specialty_query, $post_type, array( $start_from, 50 ) );
	}

	$templates_data_processed = $templates_data;
	$next_page = 'none';

	if ( 0 !== $start_from && empty( $templates_data ) ) {
		$templates_data_processed = array();
	} else {
		if ( empty( $templates_data ) ) {
			$templates_data_processed = array( 'error' => esc_html__( 'You have not saved any items to your Divi Library yet. Once an item has been saved to your library, it will appear here for easy use.', 'et_builder' ) );
		} else {
			foreach( $templates_data as $index => $data ) {
				$templates_data_processed[ $index ]['shortcode'] = et_fb_process_shortcode( $data['shortcode'] );

				if ( 'global' === $templates_data_processed[ $index ]['is_global'] && 'module' === $templates_data_processed[ $index ]['layout_type'] ) {
					$templates_data_processed[ $index ]['shortcode'][0]['unsyncedGlobalSettings'] = $templates_data_processed[ $index ]['unsynced_options'];

					if ( empty( $templates_data_processed[ $index ]['unsynced_options'] ) && isset( $templates_data_processed[ $index ]['shortcode'][0]['attrs']['saved_tabs'] ) && 'all' !== $templates_data_processed[ $index ]['shortcode'][0]['attrs']['saved_tabs'] ) {
						$templates_data_processed[ $index ]['shortcode'][0]['unsyncedGlobalSettings'] = et_pb_get_unsynced_legacy_options( $post_type, $templates_data_processed[ $index ]['shortcode'][0] );
					}
				}
			}
			$next_page = 'all' === $is_global ? $start_from + 25 : $start_from + 50;
		}
	}

	$json_templates = json_encode( array( 'templates_data' => $templates_data_processed, 'next_page' => $next_page ) );

	die( $json_templates );
}
add_action( 'wp_ajax_et_fb_get_saved_templates', 'et_fb_get_saved_templates' );

function et_pb_get_supported_font_formats() {
	return apply_filters( 'et_pb_supported_font_formats', array( 'eot', 'woff2', 'woff', 'ttf', 'otf' ) );
}

function et_pb_process_custom_font() {
	et_core_security_check( 'edit_posts', 'et_fb_upload_font_nonce' );

	// action "add" or "remove"
	$action = ! empty( $_POST['et_pb_font_action'] ) ? sanitize_text_field( $_POST['et_pb_font_action'] ) : 'save';

	if ( 'add' === $action ) {
		$supported_font_files = et_pb_get_supported_font_formats();
		$custom_font_name = ! empty( $_POST['et_pb_font_name'] ) ? sanitize_text_field( $_POST['et_pb_font_name'] ) : '';
		$custom_font_settings = ! empty( $_POST['et_pb_font_settings'] ) ? sanitize_text_field( $_POST['et_pb_font_settings'] ) : '';
		$custom_font_settings_processed = '' === $custom_font_settings ? array() : json_decode( str_replace( '\\', '', $custom_font_settings ), true );
		$fonts_array = array();

		foreach ( $supported_font_files as $format ) {
			if ( isset( $_FILES['et_pb_font_file_' . $format ] ) ) {
				$fonts_array[ $format ] = $_FILES['et_pb_font_file_' . $format ];
			}
		}
		
		die( json_encode( et_pb_add_font( $fonts_array, $custom_font_name, $custom_font_settings_processed ) ) );
	} elseif ( 'remove' === $action ) {
		$font_slug = ! empty( $_POST['et_pb_font_name'] ) ? sanitize_text_field( $_POST['et_pb_font_name'] ) : '';
		die( json_encode( et_pb_remove_font( $font_slug ) ) );
	} 
}

add_action( 'wp_ajax_et_pb_process_custom_font', 'et_pb_process_custom_font' );

/*
 * Save the font-file.
 *
 */
function et_pb_add_font( $font_files, $font_name, $font_settings ) {
	if ( ! isset( $font_files ) || empty( $font_files ) ) {
		return array( 'error' => esc_html__( 'No Font File Provided', 'et_builder' ) );
	}

	// remove all special characters from the font name
	$font_name = preg_replace( '/[^A-Za-z0-9\s\_-]/', '', $font_name ); 

	if ( '' === $font_name ) {
		return array( 'error' => esc_html__( 'Font Name Cannot be Empty and Cannot Contain Special Characters', 'et_builder' ) );
	}

	$google_fonts = et_builder_get_google_fonts();
	$all_custom_fonts = get_option( 'et_uploaded_fonts', array() );

	// Don't allow to add fonts with the names which already used by User Fonts or Google Fonts.
	if ( isset( $all_custom_fonts[ $font_name ] ) || isset( $google_fonts[ $font_name ] ) ) {
		return array( 'error' => esc_html__( 'Font With This Name Already Exists. Please Use a Different Name', 'et_builder' ) );
	}

	// set the upload Directory for builder font files
	add_filter( 'upload_dir', 'et_pb_set_fonts_upload_dir' );
	
	$uploaded_files_error = '';
	$uploaded_files = array(
		'font_file' => array(),
		'font_url'  => array(),
	);

	foreach ( $font_files as $ext => $font_file) {
		// Try to upload font file.
		$upload = wp_handle_upload( $font_file, array(
			'test_size' => false,
			'test_form' => false,
			'mimes'     => array(
			  'otf'   => 'application/x-font-opentype',
			  'ttf'   => 'application/x-font-ttf',
			  'woff'  => 'application/font-woff',
			  'woff2' => 'application/font-woff2',
			  'eot'   => 'application/vnd.ms-fontobject',
			),
		) );

		// try with different MIME types if uploading .otf file and error occurs
		if ( 'otf' === $ext && ! empty( $upload['error'] ) ) {
			foreach ( array( 'application/x-font-ttf', 'application/vnd.ms-opentype' ) as $mime_type ) {
				if ( ! empty( $upload['error'] ) ) {
					$upload = wp_handle_upload( $font_file, array(
						'test_size' => false,
						'test_form' => false,
						'mimes'     => array(
						  'otf' => $mime_type,
						),
					) );
				}
			}
		}

		if ( ! empty( $upload['error'] ) ) {
			$uploaded_files_error = $upload['error'];
		} else {
			$uploaded_files['font_file'][$ext] = esc_url( $upload['file'] );
			$uploaded_files['font_url'][$ext] = esc_url( $upload['url'] );
		}
	}

	// Reset the upload Directory after uploading font file
	remove_filter( 'upload_dir', 'et_pb_set_fonts_upload_dir' );

	// return error if no files were uploaded
	if ( empty( $uploaded_files['font_file'] ) && '' !== $uploaded_files_error ) {
		return array( 'error' => $uploaded_files_error );
	}

	//organize uploaded files
	$all_custom_fonts[ $font_name ] = array(
		'font_file' => $uploaded_files['font_file'],
		'font_url'  => $uploaded_files['font_url'],
	);

	if ( ! empty( $font_settings ) ) {
		$all_custom_fonts[ $font_name ]['styles'] = ! isset( $font_settings['font_weights'] ) || 'all' === $font_settings['font_weights'] ? '100,200,300,400,500,600,700,800,900' : $font_settings['font_weights'];
		$all_custom_fonts[ $font_name ]['type'] = isset( $font_settings['generic_family'] ) ? $font_settings['generic_family'] : 'serif';
	}

	update_option( 'et_uploaded_fonts', $all_custom_fonts );

	return array( 'error' => array(), 'success' => true, 'uploaded_font' => $font_name, 'updated_fonts' => $all_custom_fonts );
}

function et_pb_remove_font( $font_name ) {
	if ( '' === $font_name ) {
		return array( 'error' => esc_html__( 'Font Name Cannot be Empty', 'et_builder' ) );
	}

	$all_custom_fonts = get_option( 'et_uploaded_fonts', array() );

	if ( ! isset( $all_custom_fonts[ $font_name ] ) ) {
		return array( 'error' => esc_html__( 'Font Does not Exist', 'et_builder' ) );
	}

	// remove all uploaded font files if array
	if ( is_array( $all_custom_fonts[ $font_name ]['font_file'] ) ) {
		foreach ( $all_custom_fonts[ $font_name ]['font_file'] as $ext => $font_file ) {
			unlink( $font_file );
		}
	} else {
		unlink( $all_custom_fonts[ $font_name ]['font_file'] );
	}

	unset( $all_custom_fonts[ $font_name ] );

	update_option( 'et_uploaded_fonts', $all_custom_fonts );

	return array( 'error' => array(), 'success' => true, 'updated_fonts' => $all_custom_fonts );
}

function et_pb_set_fonts_upload_dir( $directory ) {
	$directory['path'] = $directory['basedir'] . '/et-fonts';
	$directory['url'] = $directory['baseurl'] . '/et-fonts';
	$directory['subdir'] = '/et-fonts';

	return $directory;
}

function et_pb_get_unsynced_legacy_options( $post_type, $shortcode_data ) {
	if ( ! isset( $shortcode_data['attrs']['saved_tabs'] ) && 'all' === $shortcode_data['attrs']['saved_tabs'] ) {
		return array();
	}

	// get all options
	$general_fields = ET_Builder_Element::get_general_fields( $post_type, 'all', $shortcode_data['type'] );
	$advanced_fields = ET_Builder_Element::get_advanced_fields( $post_type, 'all', $shortcode_data['type'] );
	$css_fields = ET_Builder_Element::get_custom_css_fields( $post_type, 'all', $shortcode_data['type'] );
	$saved_fields = array_keys( $shortcode_data['attrs'] );

	// content fields should never be included into unsynced options. We use different key for the content options.
	$saved_fields[] = 'content_new';
	$saved_fields[] = 'raw_content';

	$all_fields = array_merge( array_keys( $general_fields ), array_keys( $advanced_fields ), array_keys( $css_fields ) );

	// compare all options with saved options to get array of unsynced ones.
	$unsynced_options = array_diff( $all_fields, $saved_fields );

	if ( false === strpos( $shortcode_data['attrs']['saved_tabs'], 'general' ) ) {
		$unsynced_options[] = 'et_pb_content_field';
	}

	return $unsynced_options;
}

// prepare the ssl link for FB
function et_fb_prepare_ssl_link( $link ) {
 	// replace http:// with https:// if FORCE_SSL_ADMIN option enabled
 	if ( defined( 'FORCE_SSL_ADMIN' ) && FORCE_SSL_ADMIN ) {
 		return str_replace( 'http://', 'https://', $link );
 	}

 	return $link;
}

/**
 * Filterable options for backend and visual builder. Designed to be filtered
 * by theme/plugin since builder is shared accross Divi, Extra, and Divi Builder
 * @return array builder options values
 */
if ( ! function_exists( 'et_builder_options' ) ) :
function et_builder_options() {
	return apply_filters( 'et_builder_options', array(
		'all_buttons_icon' => 'yes', // Default appearance of button icon
	) );
}
endif;

/**
 * Get specific builder option (fetched from et_builder_options())
 * @param string option name
 * @return mixed builder option value
 */
if ( ! function_exists( 'et_builder_option' ) ) :
function et_builder_option( $name ) {
	$options = et_builder_options();

	$option = isset( $options[ $name ] ) ? $options[ $name ] : false;

	return apply_filters( "et_builder_option_{$name}", $option );
}
endif;

/**
 * Pass thru semantical previously escaped acknowledgement
 * @param string value being passed through
 * @return string
 */
function et_esc_previously( $passthru ) {
	return $passthru;
}

/**
 * Pass thru semantical escaped by WordPress core acknowledgement
 * @param string value being passed through
 * @return string
 */

function et_esc_wp( $passthru ) {
	return $passthru;
}

/**
 * Pass thru semantical intentionally unescaped acknowledgement
 * @param string value being passed through
 * @param string excuse the value is allowed to be unescaped
 * @return string
 */

function et_intentionally_unescaped( $passthru, $excuse ) {
	// Add valid excuses as they arise
	$valid_excuses = array(
		'cap_based_sanitized',
		'fixed_string',
	);

	if ( ! in_array( $excuse, $valid_excuses ) ) {
		_doing_it_wrong( __FUNCTION__, esc_html__( 'This is not a valid excuse to not escape the passed value.', 'et_builder' ), et_get_theme_version() );
	}

	return $passthru;
}

/**
 * Sanitize value depending on user capability
 * @return string value being passed through
 */
function et_sanitize_value_by_cap( $passthru, $sanitize_function = 'et_sanitize_html_input_text', $cap = 'unfiltered_html' ) {
	if ( ! current_user_can( $cap ) ) {
		$passthru = $sanitize_function( $passthru );
	}

	return $passthru;
}

/**
 * Pass thru semantical intentionally unsanitized acknowledgement
 * @param string value being passed through
 * @param string excuse the value is allowed to be unsanitized
 * @return string
 */

function et_intentionally_unsanitized( $passthru, $excuse ) {
	// Add valid excuses as they arise
	$valid_excuses = array();

	if ( ! in_array( $excuse, $valid_excuses ) ) {
		_doing_it_wrong( __FUNCTION__, esc_html__( 'This is not a valid excuse to not sanitize the passed value.', 'et_builder' ), et_get_theme_version() );
	}

	return $passthru;
}

/**
 * Prevent delimiter-separated string from having duplicate item
 * @param string delimiter-separated string
 * @param string delimiter
 * @return string filtered delimiter-separated string
 */
function et_prevent_duplicate_item( $stringList, $delimiter ) {
	$list = explode( $delimiter, $stringList );

	return implode( $delimiter, array_unique( $list ) );
}

/**
 * Determining whether unminified scripts should be loaded or not.
 * @return bool
 */
function et_load_unminified_scripts() {
	static $should_load = null;

	if ( null === $should_load ) {
		$is_script_debug = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG;

		$should_load = apply_filters( 'et_load_unminified_scripts', $is_script_debug );
	}

	return $should_load;
}

/**
 * Determining whether unminified styles should be loaded or not
 */
function et_load_unminified_styles() {
	static $should_load = null;

	if ( null === $should_load ) {
		$is_script_debug = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG;

		$should_load = apply_filters( 'et_load_unminified_styles', $is_script_debug );
	}

	return $should_load;
}
