<?php

/**
 * Sanitize Functions
 *
 * Used to validate the user input of the theme settings
 * Based on https://github.com/WPTRT/code-examples/blob/master/customizer/sanitization-callbacks.php
 *
 * @package cleanead
 */


/**
 * Checkbox sanitization callback
 *
 * @param bool $checked Whether the checkbox is checked.
 * @return bool Whether the checkbox is checked.
 */
function cleanead_sanitize_checkbox( $checked ) {

    // Boolean check.
    return ( ( isset( $checked ) && true == $checked ) ? true : false );
    
}


/**
 * Select sanitization callback example.
 *
 * - Sanitization: select
 * - Control: select, radio
 * 
 * Sanitization callback for 'select' and 'radio' type controls. This callback sanitizes `$input`
 * as a slug, and then validates `$input` against the choices defined for the control.
 * 
 * @see sanitize_key()               https://developer.wordpress.org/reference/functions/sanitize_key/
 * @see $wp_customize->get_control() https://developer.wordpress.org/reference/classes/wp_customize_manager/get_control/
 *
 * @param string               $input   Slug to sanitize.
 * @param WP_Customize_Setting $setting Setting instance.
 * @return string Sanitized slug if it is a valid choice; otherwise, the setting default.
 */
function cleanead_sanitize_select( $input, $setting ) {
    
    // Ensure input is a slug.
    $input = sanitize_key( $input );
    
    // Get list of choices from the control associated with the setting.
    $choices = $setting->manager->get_control( $setting->id )->choices;
    
    // If the input is a valid key, return it; otherwise, return the default.
    return ( array_key_exists( $input, $choices ) ? $input : $setting->default );
}