astra_apply_boxed_layouts( mixed $content_layout, boolean $is_boxed, boolean $is_sidebar_boxed, mixed $post_id = false )

function astra_apply_boxed_layouts( $content_layout, $is_boxed, $is_sidebar_boxed, $post_id = false ) {
	
	// Getting meta values here to handle meta migration cases.
	$meta_old_layout = is_singular() ? astra_get_option_meta( 'site-content-layout', '', true ) : '';
	$meta_new_layout = astra_get_option_meta( 'ast-site-content-layout', '', true );
	
	// To check whether migrated user or not.
	$meta_key      = astra_get_option_meta( 'astra-migrate-meta-layouts', '', true );
	$migrated_user = ( ! Astra_Dynamic_CSS::astra_fullwidth_sidebar_support() );

	$sidebar_layout = astra_page_layout();

	// Editor compatibility.
	if ( $post_id ) {
		$meta_old_layout = get_post_meta( $post_id, 'site-content-layout', true );
		$meta_new_layout = get_post_meta( $post_id, 'ast-site-content-layout', true );
		$meta_key        = get_post_meta( $post_id, 'astra-migrate-meta-layouts', true );
		$post_type       = strval( get_post_type() );
		$sidebar_layout  = astra_get_sidebar_layout_for_editor( $post_type );
	}

	// Third party archive meta migration.
	$third_party_meta_page = astra_third_party_archive_meta( 'site-content-layout' );
	if ( false !== $third_party_meta_page && $migrated_user ) {
		$meta_old_layout = $third_party_meta_page;
		$meta_key        = astra_third_party_archive_meta( 'astra-migrate-meta-layouts' );
	}

	// Migrate old user existing container layout option to new layout options.
	if ( $meta_old_layout && 'set' !== $meta_key && $migrated_user ) {
		if ( 'plain-container' == $meta_old_layout && 'plain-container' === $content_layout ) {
			
			// No need to evaluate further as no boxed (content or boxed) layout will be applicable now.
			return $content_layout;
		} elseif ( 'content-boxed-container' == $meta_old_layout && 'plain-container' === $content_layout ) {
			$is_boxed         = true;
			$is_sidebar_boxed = false;
		} elseif ( 'boxed-container' == $meta_old_layout && 'plain-container' === $content_layout ) {
			$is_boxed         = true;
			$is_sidebar_boxed = true;
		}
	}

	// Apply content boxed layout or boxed layout depending on content/sidebar style.
	if ( 'plain-container' === $content_layout ) {
		if ( 'no-sidebar' === $sidebar_layout ) {
			if ( $is_boxed ) {
				$content_layout = 'boxed-container';
			}
		} elseif ( 'no-sidebar' !== $sidebar_layout ) {
			if ( $is_boxed ) {
				$content_layout = $is_sidebar_boxed ? 'boxed-container' : 'content-boxed-container';
			} elseif ( $is_sidebar_boxed ) {

				/**
				 * Case: unboxed container with sidebar boxed
				 * Container unboxed css is applied through astra_apply_unboxed_container()
				*/ 
				$content_layout = 'boxed-container';
			}
		}
	}
	return $content_layout;
}