<?php
/**
 * Sanitization functions.
 *
 * @package University_Hub
 */

if ( ! function_exists( 'university_hub_sanitize_select' ) ) :

	/**
	 * Sanitize select.
	 *
	 * @since 1.0.0
	 *
	 * @param mixed                $input The value to sanitize.
	 * @param WP_Customize_Setting $setting WP_Customize_Setting instance.
	 * @return mixed Sanitized value.
	 */
	function university_hub_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 );

	}

endif;

if ( ! function_exists( 'university_hub_sanitize_select_liberal' ) ) :

	/**
	 * Sanitize select, quite liberal than other select sanitization.
	 *
	 * @since 1.0.0
	 *
	 * @param mixed                $input The value to sanitize.
	 * @param WP_Customize_Setting $setting WP_Customize_Setting instance.
	 * @return mixed Sanitized value.
	 */
	function university_hub_sanitize_select_liberal( $input, $setting ) {

		// Escape value.
		$input = esc_attr( $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, return it; otherwise, return the default.
		return ( array_key_exists( $input, $choices ) ? $input : $setting->default );

	}

endif;


if ( ! function_exists( 'university_hub_sanitize_checkbox' ) ) :

	/**
	 * Sanitize checkbox.
	 *
	 * @since 1.0.0
	 *
	 * @param bool $checked Whether the checkbox is checked.
	 * @return bool Whether the checkbox is checked.
	 */
	function university_hub_sanitize_checkbox( $checked ) {

		return ( ( isset( $checked ) && true === $checked ) ? true : false );

	}

endif;


if ( ! function_exists( 'university_hub_sanitize_positive_integer' ) ) :

	/**
	 * Sanitize positive integer.
	 *
	 * @since 1.0.0
	 *
	 * @param int                  $input Number to sanitize.
	 * @param WP_Customize_Setting $setting WP_Customize_Setting instance.
	 * @return int Sanitized number; otherwise, the setting default.
	 */
	function university_hub_sanitize_positive_integer( $input, $setting ) {

		$input = absint( $input );

		// If the input is an absolute integer, return it.
		// otherwise, return the default.
		return ( $input ? $input : $setting->default );

	}

endif;

if ( ! function_exists( 'university_hub_sanitize_dropdown_pages' ) ) :

	/**
	 * Sanitize dropdown pages.
	 *
	 * @since 1.0.0
	 *
	 * @param int                  $page_id Page ID.
	 * @param WP_Customize_Setting $setting WP_Customize_Setting instance.
	 * @return int|string Page ID if the page is published; otherwise, the setting default.
	 */
	function university_hub_sanitize_dropdown_pages( $page_id, $setting ) {

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

		// If $page_id is an ID of a published page, return it; otherwise, return the default.
		return ( 'publish' === get_post_status( $page_id ) ? $page_id : $setting->default );

	}

endif;

if ( ! function_exists( 'university_hub_sanitize_image' ) ) :

	/**
	 * Sanitize image.
	 *
	 * @since 1.0.0
	 *
	 * @see wp_check_filetype() https://developer.wordpress.org/reference/functions/wp_check_filetype/
	 *
	 * @param string               $image Image filename.
	 * @param WP_Customize_Setting $setting WP_Customize_Setting instance.
	 * @return string The image filename if the extension is allowed; otherwise, the setting default.
	 */
	function university_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 );

	}

endif;


if ( ! function_exists( 'university_hub_sanitize_number_range' ) ) :

	/**
	 * Sanitize number range.
	 *
	 * @since 1.0.0
	 *
	 * @see absint() https://developer.wordpress.org/reference/functions/absint/
	 *
	 * @param int                  $input Number to check within the numeric range defined by the setting.
	 * @param WP_Customize_Setting $setting WP_Customize_Setting instance.
	 * @return int|string The number, if it is zero or greater and falls within the defined range; otherwise, the setting default.
	 */
	function university_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 );

	}

endif;

if ( ! function_exists( 'university_hub_sanitize_post_id' ) ) :

	/**
	 * Sanitize post ID.
	 *
	 * @since 1.0.0
	 *
	 * @param int                  $post_id Post ID.
	 * @param WP_Customize_Setting $setting WP_Customize_Setting instance.
	 * @return int|string Page ID if the post is published; otherwise, the setting default.
	 */
	function university_hub_sanitize_post_id( $post_id, $setting ) {

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

		// If $post_id is an ID of a published post, return it; otherwise, return the default.
		return ( 'publish' === get_post_status( $post_id ) ? $post_id : $setting->default );

	}

endif;

if ( ! function_exists( 'university_hub_sanitize_textarea_content' ) ) :

	/**
	 * Sanitize textarea content.
	 *
	 * @since 1.0.0
	 *
	 * @param string               $input Content to be sanitized.
	 * @param WP_Customize_Setting $setting WP_Customize_Setting instance.
	 * @return string Sanitized content.
	 */
	function university_hub_sanitize_textarea_content( $input, $setting ) {

		return ( stripslashes( wp_filter_post_kses( addslashes( $input ) ) ) );

	}
endif;

if ( ! function_exists( 'university_hub_sanitize_homepage_sections' ) ) :

	/**
	 * Sanitize homepage sections.
	 *
	 * @since 1.0.0
	 *
	 * @param string               $input Content to be sanitized.
	 * @param WP_Customize_Setting $setting WP_Customize_Setting instance.
	 * @return string Sanitized content.
	 */
	function university_hub_sanitize_homepage_sections( $input, $setting ) {

		$input = (array)$input;
		$output = array();

		if ( ! empty( $input ) ) {
			$all_sections = university_hub_get_home_sections_options();
			$section_keys = array_keys( $all_sections );

			foreach ( $input as $key ) {
				if ( in_array( $key, $section_keys ) ) {
					$output[] = sanitize_text_field( $key );
				}
			}
		}

		return $output;

	}
endif;