utils.php

<?php
namespace MRW\Accordion;

/**
 * generate the full string for all classes that may appear on the accordion
 *
 * @param boolean $font_size whether there is a custom font size
 * @param boolean $bg_color whether there is a custom background color
 * @param boolean $text_color whether there is a custom text color
 * @return string full space-separated list of classes for accordion heading
 */
function get_accordion_heading_classes( $font_size = false, $bg_color = false, $text_color = false ) {

	$theme_settings = wp_get_global_settings();
	$classes = 'mrw-accordion__heading';

	if( $font_size ) {
		$font_sizes = wp_list_pluck( array_merge( ...array_values( $theme_settings['typography']['fontSizes'] ) ), 'slug', 'size' );
		$heading_font_size_slug = $font_sizes[$font_size] ?? false;
		if( $heading_font_size_slug ) {
			$classes .= ' has-' . esc_attr( $heading_font_size_slug ) . '-font-size';
		}
	}

	/* merge all default, theme, and user colors into single array of format '#hex' => 'slug' */
	$colors = wp_list_pluck( array_merge( ...array_values( $theme_settings['color']['palette'] ) ), 'slug', 'color' );
	$primary_color_slug = $colors[$bg_color] ?? false;
	$text_color_slug = $colors[$text_color] ?? false;

	if( $primary_color_slug ) {
		$classes .= ' has-' . esc_attr( $primary_color_slug ) . '-background-color';
		$classes .= ' has-background';
	}

	if( $text_color_slug ) {
		$classes .= ' has-' . esc_attr( $text_color_slug ) . '-color';
		$classes .= ' has-text-color';
	}

	return $classes;
}

/**
 * Remove a heading and its content from an HTML string
 *
 * @param int $level level of heading
 * @param string $heading heading content
 * @param string $content content to replace heading in
 * @return string $content with heading removed
 */
function strip_heading( $level, $heading, $content ) {
	/* Due to current "Hybrid Block" strategy, I now need to filter out the first block which is the heading */
	$search_string = "<h{$level}>{$heading}</h{$level}>";
	return trim( str_replace( $search_string, '', html_entity_decode( $content ) ) );
}