<?php
/**
 * LearnDash Settings field WPEditor.
 *
 * @package LearnDash
 * @subpackage Settings
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ( class_exists( 'LearnDash_Settings_Fields' ) ) && ( ! class_exists( 'LearnDash_Settings_Fields_WPEditor' ) ) ) {
	/**
	 * Class to create the settings field.
	 */
	class LearnDash_Settings_Fields_WPEditor extends LearnDash_Settings_Fields {

		/**
		 * Public constructor for class
		 */
		public function __construct() {
			$this->field_type = 'wpeditor';

			parent::__construct();
		}

		/**
		 * Function to crete the settiings field.
		 *
		 * @since 2.4
		 *
		 * @param array $field_args An array of field arguments used to process the ouput.
		 * @return void
		 */
		public function create_section_field( $field_args = array() ) {

			/** This filter is documented in includes/settings/settings-fields/class-ld-settings-fields-checkbox-switch.php */
			$field_args = apply_filters( 'learndash_settings_field', $field_args );
			if ( isset( $field_args['editor_args'] ) ) {
				$wpeditor_args = $field_args['editor_args'];
			} else {
				$wpeditor_args = array();
			}

			if ( ( isset( $field_args['attrs'] ) ) && ( ! empty( $field_args['attrs'] ) ) ) {
				$wpeditor_args = array_merge( $wpeditor_args, $field_args['attrs'] );
			}

			/** This filter is documented in includes/settings/settings-fields/class-ld-settings-fields-checkbox-switch.php */
			$html = apply_filters( 'learndash_settings_field_html_before', '', $field_args );
			wp_editor(
				$this->get_field_attribute_value( $field_args, false ),
				$this->get_field_attribute_id( $field_args, false ),
				$wpeditor_args
			);

			/** This filter is documented in includes/settings/settings-fields/class-ld-settings-fields-checkbox-switch.php */
			$html = apply_filters( 'learndash_settings_field_html_after', $html, $field_args );

			echo $html;
		}

		/**
		 * Default validation function. Should be overriden in Field subclass.
		 *
		 * @since 2.4
		 *
		 * @param mixed  $val Value to validate.
		 * @param string $key Key of value being validated.
		 * @param array  $args Array of field args.
		 *
		 * @return mixed $val validated value.
		 */
		public function validate_section_field( $val, $key, $args = array() ) {
			if ( ( isset( $args['field']['type'] ) ) && ( $args['field']['type'] === $this->field_type ) ) {
				if ( ! empty( $val ) ) {
					$val = wp_check_invalid_utf8( $val );
					if ( ! empty( $val ) ) {
						$val = sanitize_post_field( 'post_content', $val, 0, 'db' );
					}
				}

				return $val;
			}

			return false;
		}
	}
}
add_action(
	'learndash_settings_sections_fields_init',
	function() {
		LearnDash_Settings_Fields_WPEditor::add_field_instance( 'wpeditor' );
	}
);
