<?php

/**
 * Boots Frond End Builder App,
 *
 * @return Front End Builder wrap if main query, $content otherwise.
 */
function et_fb_app_boot( $content ) {
	// Instances of React app
	static $instances = 0;
	$is_new_page = isset( $_GET['is_new_page'] ) && '1' === $_GET['is_new_page'];

	// Don't boot the app if the builder is not in use
	if ( ! et_pb_is_pagebuilder_used( get_the_ID() ) || doing_filter( 'get_the_excerpt' ) ) {
		// Skip this when content should be loaded from other post or page to not mess with the default content
		if ( $is_new_page ) {
			return;
		}

		return $content;
	}

	$class = apply_filters( 'et_fb_app_preloader_class', 'et-fb-page-preloading' );

	if ( '' !== $class ) {
		$class = sprintf( ' class="%1$s"', esc_attr( $class ) );
	}

	// Only return React app wrapper for the main query.
	if ( is_main_query() ) {
		// Keep track of instances in case is_main_query() is true multiple times for the same page
		// This happens in 2017 theme when multiple Divi enabled pages are assigned to Front Page Sections
		$instances++;
		$output = sprintf( '<div id="et-fb-app"%1$s></div>', $class );
		// No need to add fallback content on a new page.
		if ( $instances > 1 && ! $is_new_page ) {
			// uh oh, we might have multiple React app in the same page, let's also add rendered content and deal with it later using JS
			$output .= sprintf( '<div class="et_fb_fallback_content" style="display: none">%s</div>', $content );
			// Stop shortcode object processor so that shortcode in the content are treated normaly.
			et_fb_reset_shortcode_object_processing();
		}
		return $output;
	}

	// Stop shortcode object processor so that shortcode in the content are treated normaly.
	et_fb_reset_shortcode_object_processing();

	return $content;
}
add_filter( 'the_content', 'et_fb_app_boot', 1 );

function et_fb_wp_nav_menu( $menu ) {
	// Ensure we fix any unclosed HTML tags in menu since they would break the VB
	return et_core_fix_unclosed_html_tags( $menu );
}
add_filter( 'wp_nav_menu', 'et_fb_wp_nav_menu' );

function et_builder_maybe_include_bfb_template( $template ) {
	if ( et_builder_bfb_enabled() && ! is_admin() ) {
		return ET_BUILDER_DIR . 'frontend-builder/bfb-template.php';
	}

	return $template;
}
add_filter( 'template_include', 'et_builder_maybe_include_bfb_template', 99 );


function et_fb_dynamic_sidebar_ob_start() {
	global $et_fb_dynamic_sidebar_buffering;

	if ( $et_fb_dynamic_sidebar_buffering ) {
		echo force_balance_tags( ob_get_clean() );
	}

	$et_fb_dynamic_sidebar_buffering = true;

	ob_start();
}
add_action( 'dynamic_sidebar', 'et_fb_dynamic_sidebar_ob_start' );

function et_fb_dynamic_sidebar_after_ob_get_clean() {
	global $et_fb_dynamic_sidebar_buffering;

	if ( $et_fb_dynamic_sidebar_buffering ) {
		echo force_balance_tags( ob_get_clean() );

		$et_fb_dynamic_sidebar_buffering = false;
	}
}
add_action( 'dynamic_sidebar_after', 'et_fb_dynamic_sidebar_after_ob_get_clean' );

/**
 * Added frontend builder assets.
 * Note: loading assets on head is way too early, computedVars returns undefined on header.
 *
 * @return void
 */
function et_fb_wp_footer() {
	et_fb_enqueue_assets();

	// TODO: this is specific to Audio Module and we should conditionally call it once we have
	// $content set as an object, we can then to a check whether the audio module is
	// present.
	remove_all_filters( 'wp_audio_shortcode_library' );
	remove_all_filters( 'wp_audio_shortcode' );
	remove_all_filters( 'wp_audio_shortcode_class');
}
add_action( 'wp_footer', 'et_fb_wp_footer' );

/**
 * Added frontend builder specific body class
 * @todo load conditionally, only when the frontend builder is used
 *
 * @param array  initial <body> classes
 * @return array modified <body> classes
 */
function et_fb_add_body_class( $classes ) {
	$classes[] = 'et-fb';

	if ( is_rtl() && 'on' === et_get_option( 'divi_disable_translations', 'off' ) ) {
		$classes[] = 'et-fb-no-rtl';
	}

	if ( et_builder_bfb_enabled() ) {
		$classes[] = 'et-bfb';
	}

	return $classes;
}
add_filter( 'body_class', 'et_fb_add_body_class' );

/**
 * Added BFB specific body class
 * @todo load conditionally, only when the frontend builder is used
 *
 * @param string initial <body> classes
 * @return string modified <body> classes
 */
function et_fb_add_admin_body_class( $classes ) {
	if ( is_rtl() && 'on' === et_get_option( 'divi_disable_translations', 'off' ) ) {
		$classes .= ' et-fb-no-rtl';
	}

	if ( et_builder_bfb_enabled() ) {
		$classes .= ' et-bfb';

		$post_id   = et_core_page_resource_get_the_ID();
		$post_type = get_post_type( $post_id );

		// Add layout classes when on library page
		if ( 'et_pb_layout' === $post_type ) {
			$layout_type = et_fb_get_layout_type( $post_id );
			$layout_scope = et_fb_get_layout_term_slug( $post_id, 'scope' );

			$classes .= " et_pb_library_page_top-${layout_type}";
			$classes .= " et_pb_library_page_top-${layout_scope}";
		}
	}

	return $classes;
}
add_filter( 'admin_body_class', 'et_fb_add_admin_body_class' );

/**
 * Remove visual builder preloader classname on BFB because BFB spins the preloader on parent level to avoid flash of unstyled elements
 *
 * @param string builder preloader classname
 * @return string modified builder preloader classname
 */
function et_bfb_app_preloader_class( $classname ) {
	return et_builder_bfb_enabled() ? '' : $classname;
}
add_filter( 'et_fb_app_preloader_class', 'et_bfb_app_preloader_class' );

function et_builder_inject_preboot_script() {
	$et_debug = defined( 'ET_DEBUG' ) && ET_DEBUG;
	$is_debug = 'false';
	$is_BFB   = 'false';

	if ( $et_debug || DiviExtensions::is_debugging_extension() ) {
		$is_debug = 'true';
	}

	if ( et_builder_bfb_enabled() ) {
		$is_BFB = 'true';
	}

	$preboot_path   = ET_BUILDER_DIR . 'frontend-builder/build/preboot.js';
	if ( file_exists( $preboot_path ) ) {
		$preboot_script = file_get_contents( $preboot_path );
	} else {
		// if the file doesn't exists, it means we're using `yarn hot`
		$site_url = wp_parse_url( get_site_url() );
		$hot      = "{$site_url['scheme']}://{$site_url['host']}:31495/preboot.js";
		$curl     = curl_init();
		curl_setopt_array(
			$curl,
			array(
				CURLOPT_RETURNTRANSFER => 1,
				CURLOPT_URL            => $hot,
			)
		);
		$preboot_script = curl_exec( $curl );
	}

	echo "
		<script id='et-builder-preboot'>
			var et_fb_preboot = { debug: {$is_debug}, is_BFB: {$is_BFB} };

			// Disable Google Tag Manager
			window.dataLayer = [{'gtm.blacklist': ['google', 'nonGoogleScripts', 'customScripts', 'customPixels', 'nonGooglePixels']}];

			{$preboot_script}
		</script>
	";
}
add_action( 'wp_head', 'et_builder_inject_preboot_script', 0 );
