<?php

if ( ! function_exists( 'blogging_hub_sanitize_select' ) ) {
	/**
	* Sanitize selection
	*
	* @since blogging_hub 1.0.0
	*/
	function blogging_hub_sanitize_select( $input, $setting ) {
		// Ensure input is a slug.
		$input = sanitize_text_field( $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 );
	}
}

if ( ! function_exists( 'blogging_hub_sanitize_number_range' ) ) {
	/**
	* Sanitize selection
	*
	* @since blogging_hub 1.0.0
	*/
	function blogging_hub_sanitize_number_range( $input, $setting ) {

		// Ensure input is an absolute integer.
		$input = absint( $input );

		// Get the input attributes associated with the setting.
		$atts = $setting->manager->get_control( $setting->id )->input_attrs;

		// Get min.
		$min = ( isset( $atts['min'] ) ? $atts['min'] : $input );

		// Get max.
		$max = ( isset( $atts['max'] ) ? $atts['max'] : $input );

		// Get Step.
		$step = ( isset( $atts['step'] ) ? $atts['step'] : 1 );

		// If the input is within the valid range, return it; otherwise, return the default.
		return ( $min <= $input && $input <= $max && is_int( $input / $step ) ? $input : $setting->default );

	}
}

/**
 * Image sanitization callback example.
 *
 * Checks the image's file extension and mime type against a whitelist. If they're allowed,
 * send back the filename, otherwise, return the setting default.
 *
 * - Sanitization: image file extension
 * - Control: text, WP_Customize_Image_Control
 * 
 * @see wp_check_filetype() https://developer.WordPress.org/reference/functions/wp_check_filetype/
 *
 * @param string               $image   Image filename.
 * @param WP_Customize_Setting $setting Setting instance.
 * @return string The image filename if the extension is allowed; otherwise, the setting default.
 */
function blogging_hub_sanitize_image( $image, $setting ) {

	/*
	 * Array of valid image file types.
	 *
	 * The array includes image mime types that are included in wp_get_mime_types()
	 */
    $mimes = array(
        'jpg|jpeg|jpe' => 'image/jpeg',
        'gif'          => 'image/gif',
        'png'          => 'image/png',
        'bmp'          => 'image/bmp',
        'tif|tiff'     => 'image/tiff',
        'ico'          => 'image/x-icon'
    );

	// Return an array with file extension and mime_type.
    $file = wp_check_filetype( $image, $mimes );

	// If $image has a valid mime_type, return it; otherwise, return the default.
    return ( $file['ext'] ? $image : $setting->default );
}