<?php
/**
 * LearnDash Settings Metabox for Quiz Access Settings.
 *
 * @package LearnDash
 * @subpackage Settings
 */

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

if ( ( class_exists( 'LearnDash_Settings_Metabox' ) ) && ( ! class_exists( 'LearnDash_Settings_Metabox_Quiz_Access_Settings' ) ) ) {
	/**
	 * Class to create the settings section.
	 */
	class LearnDash_Settings_Metabox_Quiz_Access_Settings extends LearnDash_Settings_Metabox {

		/**
		 * Public constructor for class
		 */
		public function __construct() {
			// What screen ID are we showing on.
			$this->settings_screen_id = 'sfwd-quiz';

			// Used within the Settings API to uniquely identify this section.
			$this->settings_metabox_key = 'learndash-quiz-access-settings';

			// Section label/header.
			$this->settings_section_label = sprintf(
				// translators: placeholder: Quiz.
				esc_html_x( '%s Access Settings', 'placeholder: Quiz', 'learndash' ),
				learndash_get_custom_label( 'quiz' )
			);

			$this->settings_section_description = sprintf(
				// translators: placeholder: quiz.
				esc_html_x( 'Controls the requirements for accessing the %s', 'placeholder: quiz', 'learndash' ),
				learndash_get_custom_label_lower( 'quiz' )
			);

			add_filter( 'learndash_metabox_save_fields_' . $this->settings_metabox_key, array( $this, 'filter_saved_fields' ), 30, 3 );

			// Map internal settings field ID to legacy field ID.
			$this->settings_fields_map = array(
				'course'                  => 'course',
				'lesson'                  => 'lesson',
				'startOnlyRegisteredUser' => 'startOnlyRegisteredUser',
				'prerequisite'            => 'prerequisite',
				'prerequisiteList'        => 'prerequisiteList',
			);

			parent::__construct();
		}

		/**
		 * Used to save the settings fields back to the global $_POST object so
		 * the WPProQuiz normal form processing can take place.
		 *
		 * @since 3.0
		 * @param object $pro_quiz_edit WpProQuiz_Controller_Quiz instance (not used).
		 * @param array  $settings_values Array of settings fields.
		 */
		public function save_fields_to_post( $pro_quiz_edit, $settings_values = array() ) {

			$_POST['prerequisite']     = $settings_values['prerequisite'];
			$_POST['prerequisiteList'] = $settings_values['prerequisiteList'];

			$_POST['startOnlyRegisteredUser'] = $settings_values['startOnlyRegisteredUser'];
		}

		/**
		 * Initialize the metabox settings values.
		 */
		public function load_settings_values() {
			parent::load_settings_values();

			$this->quiz_edit = $this->init_quiz_edit( $this->_post );

			if ( true === $this->settings_values_loaded ) {
				if ( ! isset( $this->setting_option_values['course'] ) ) {
					$this->setting_option_values['course'] = '';
				}
				if ( ! isset( $this->setting_option_values['lesson'] ) ) {
					$this->setting_option_values['lesson'] = '';
				}

				$this->quiz_edit = $this->init_quiz_edit( $this->_post );
				if ( $this->quiz_edit['quiz'] ) {
					$this->setting_option_values['startOnlyRegisteredUser'] = $this->quiz_edit['quiz']->isStartOnlyRegisteredUser();
					if ( true === $this->setting_option_values['startOnlyRegisteredUser'] ) {
						$this->setting_option_values['startOnlyRegisteredUser'] = 'on';
					} else {
						$this->setting_option_values['startOnlyRegisteredUser'] = '';
					}
				}

				if ( $this->quiz_edit['prerequisiteQuizList'] ) {
					$this->setting_option_values['prerequisiteList'] = $this->quiz_edit['prerequisiteQuizList'];
				} else {
					$this->setting_option_values['prerequisiteList'] = array();
				}
			}
			foreach ( $this->settings_fields_map as $_internal => $_external ) {
				if ( ! isset( $this->setting_option_values[ $_internal ] ) ) {
					$this->setting_option_values[ $_internal ] = '';
				}
			}
		}

		/**
		 * Initialize the metabox settings fields.
		 */
		public function load_settings_fields() {
			global $sfwd_lms;

			$select_course_options         = array();
			$select_course_query_data_json = '';

			/** This filter is documented in includes/class-ld-lms.php */
			if ( ( defined( 'LEARNDASH_SELECT2_LIB' ) ) && ( true === apply_filters( 'learndash_select2_lib', LEARNDASH_SELECT2_LIB ) ) ) {
				$select_course_options_default = array(
					'-1' => sprintf(
						// translators: placeholder: course.
						esc_html_x( 'Search or select a %s…', 'placeholder: course', 'learndash' ),
						learndash_get_custom_label( 'course' )
					),
				);

				if ( ! empty( $this->setting_option_values['course'] ) ) {
					$course_post = get_post( absint( $this->setting_option_values['course'] ) );
					if ( ( $course_post ) && ( is_a( $course_post, 'WP_Post' ) ) ) {
						$select_course_options[ $course_post->ID ] = get_the_title( $course_post->ID );
					}
				}

				/** This filter is includes/settings/settings-metaboxes/class-ld-settings-metabox-course-access-settings.php */
				if ( ( defined( 'LEARNDASH_SELECT2_LIB_AJAX_FETCH' ) ) && ( true === apply_filters( 'learndash_select2_lib_ajax_fetch', LEARNDASH_SELECT2_LIB_AJAX_FETCH ) ) ) {
					$select_course_query_data_json = $this->build_settings_select2_lib_ajax_fetch_json(
						array(
							'query_args'       => array(
								'post_type'      => 'sfwd-courses',
							),
							'settings_element' => array(
								'settings_parent_class' => get_parent_class( __CLASS__ ),
								'settings_class'        => __CLASS__,
								'settings_field'        => 'course',
							),
						)
					);
				} else {
					$select_course_options = $sfwd_lms->select_a_course();
				}
				$select_course_options = $select_course_options_default + $select_course_options;
			} else {
				$select_course_options_default = array(
					'' => sprintf(
						// translators: placeholder: course.
						esc_html_x( 'Select %s', 'placeholder: course', 'learndash' ),
						learndash_get_custom_label( 'course' )
					),
				);

				$select_course_options = $sfwd_lms->select_a_course();
				if ( ( is_array( $select_course_options ) ) && ( ! empty( $select_course_options ) ) ) {
					$select_course_options = $select_course_options_default + $select_course_options;
				} else {
					$select_course_options = $select_course_options_default;
				}
				$select_course_options_default = '';
			}

			/**
			 * Select a Lesson/Topic Selector
			 */
			$select_lesson_options = array();
			if ( ( isset( $this->setting_option_values['course'] ) ) && ( ! empty( $this->setting_option_values['course'] ) ) ) {
				$select_lesson_options = $sfwd_lms->select_a_lesson_or_topic( absint( $this->setting_option_values['course'] ), true, false );
			}

			/** This filter is documented in includes/class-ld-lms.php */
			if ( ( defined( 'LEARNDASH_SELECT2_LIB' ) ) && ( true === apply_filters( 'learndash_select2_lib', LEARNDASH_SELECT2_LIB ) ) ) {
				$select_lesson_options_default = array(
					'-1' => sprintf(
						// translators: placeholder: Lesson, Topic.
						esc_html_x( 'Search or select a %1$s or %2$s…', 'placeholder: Lesson, Topic', 'learndash' ),
						learndash_get_custom_label( 'lesson' ),
						learndash_get_custom_label( 'topic' )
					),
				);
				$select_lesson_options = $select_lesson_options_default + $select_lesson_options;

			} else {
				$select_lesson_options_default = array(
					'' => sprintf(
						// translators: placeholder: Lesson, Topic.
						esc_html_x( 'Select a %1$s or %2$s', 'placeholder: Lesson, Topic', 'learndash' ),
						learndash_get_custom_label( 'lesson' ),
						learndash_get_custom_label( 'topic' )
					),
				);

				if ( ( is_array( $select_lesson_options ) ) && ( ! empty( $select_lesson_options ) ) ) {
					if ( isset( $select_lesson_options[0] ) ) {
						unset( $select_lesson_options[0] );
					}

					$select_lesson_options = $select_lesson_options_default + $select_lesson_options;
				} else {
					$select_lesson_options = $select_lesson_options_default;
				}
			}

			if ( ( defined( 'LEARNDASH_SELECT2_LIB' ) ) && ( true === apply_filters( 'learndash_select2_lib', LEARNDASH_SELECT2_LIB ) ) ) {
				$select_quiz_prerequisite_options_default = array(
					'-1' => sprintf(
						// translators: placeholder: Quiz.
						esc_html_x( 'No previous %s required', 'placeholder: Quiz.', 'learndash' ),
						learndash_get_custom_label( 'quiz' )
					),
				);
			} else {
				$select_quiz_prerequisite_options_default = array(
					'' => sprintf(
						// translators: placeholder: Quiz.
						esc_html_x( 'No previous %s required', 'placeholder: Quiz.', 'learndash' ),
						learndash_get_custom_label( 'quiz' )
					),
				);
			}

			$quiz_mapper                       = new WpProQuiz_Model_QuizMapper();
			$prerequisite_quizzes              = $quiz_mapper->fetchAllAsArray( array( 'id', 'name' ), array() );
			$select_quiz_prerequisite_options = array();
			if ( ! empty( $prerequisite_quizzes ) ) {
				foreach ( $prerequisite_quizzes as $quiz_set ) {
					if ( absint( $quiz_set['id'] ) !== absint( $this->quiz_edit['quiz']->getId() ) ) {
						$select_quiz_prerequisite_options[ $quiz_set['id'] ] = $quiz_set['name'];
					}
				}
			}
			if ( ( is_array( $select_quiz_prerequisite_options ) ) && ( ! empty( $select_quiz_prerequisite_options ) ) ) {
				$select_quiz_prerequisite_options = $select_quiz_prerequisite_options_default + $select_quiz_prerequisite_options;
			} else {
				$select_quiz_prerequisite_options = $select_quiz_prerequisite_options_default;
			}

			$this->setting_option_fields = array(
				'course'                  => array(
					'name'    => 'course',
					'label'   => sprintf(
						// translators: placeholder: Course.
						esc_html_x( 'Associated %s', 'placeholder: Course', 'learndash' ),
						learndash_get_custom_label( 'course' )
					),
					'type'    => 'select',
					'default' => '',
					'value'   => $this->setting_option_values['course'],
					'options' => $select_course_options,
					'placeholder' => $select_course_options_default,
					'attrs'   => array(
						'data-ld_selector_nonce'   => wp_create_nonce( 'sfwd-courses' ),
						'data-ld_selector_default' => '1',
						'data-select2-query-data'  => $select_course_query_data_json,
					),
				),
				'lesson'                  => array(
					'name'    => 'lesson',
					'label'   => sprintf(
						// translators: placeholder: Lesson.
						esc_html_x( 'Associated %s', 'placeholder: Lesson', 'learndash' ),
						learndash_get_custom_label( 'lesson' )
					),
					'type'    => 'select',
					'default' => '',
					'value'   => $this->setting_option_values['lesson'],
					'options' => $select_lesson_options,
					'placeholder' => $select_lesson_options_default,
					'attrs'   => array(
						'data-ld_selector_nonce'   => wp_create_nonce( 'sfwd-lessons' ),
						'data-ld_selector_default' => '1',
					),
				),

				'prerequisiteList'        => array(
					'name'        => 'prerequisiteList',
					'type'        => 'multiselect',
					// 'multiple'    => 'true',
					'label'       => sprintf(
						// translators: placeholder: Quiz.
						esc_html_x( '%s Prerequisites', 'placeholder: Quiz', 'learndash' ),
						learndash_get_custom_label( 'quiz' )
					),
					'help_text'   => sprintf(
						// translators: placeholderss: quizzes, quiz.
						esc_html_x( 'Select one or more %1$s that must be completed prior to taking this %2$s.', 'placeholderss: Quizzes Quiz', 'learndash' ),
						learndash_get_custom_label_lower( 'quizzes' ),
						learndash_get_custom_label_lower( 'quiz' )
					),
					'value'       => $this->setting_option_values['prerequisiteList'],
					'options'     => $select_quiz_prerequisite_options,
				),

				'startOnlyRegisteredUser' => array(
					'name'      => 'startOnlyRegisteredUser',
					'type'      => 'checkbox',
					'label'     => esc_html__( 'Allowed Users', 'learndash' ),
					'value'     => $this->setting_option_values['startOnlyRegisteredUser'],
					'help_text' => sprintf(
						// translators: placeholders: quizzes, courses, quiz.
						esc_html_x( 'This option is especially useful if administering %1$s via shortcodes on non-course pages, or if your %2$s are open but you wish only authenticated users to take the %3$s.', 'placeholders: quizzes, courses, quiz.', 'learndash' ),
						learndash_get_custom_label( 'quizzes' ),
						learndash_get_custom_label( 'course' ),
						learndash_get_custom_label( 'quiz' )
					),
					'default'   => '',
					'options'   => array(
						'on' => sprintf(
							// translators: placeholder: quiz.
							esc_html_x( 'Only registered users can take this quiz', 'placeholder: quiz', 'learndash' ),
							learndash_get_custom_label( 'quiz' )
						),
					),
				),
			);

			if ( 'yes' === LearnDash_Settings_Section::get_section_setting( 'LearnDash_Settings_Courses_Builder', 'shared_steps' ) ) {
				unset( $this->setting_option_fields['course'] );
				unset( $this->setting_option_fields['lesson'] );
			}

			/** This filter is documented in includes/settings/settings-metaboxes/class-ld-settings-metabox-course-access-settings.php */
			$this->setting_option_fields = apply_filters( 'learndash_settings_fields', $this->setting_option_fields, $this->settings_metabox_key );

			parent::load_settings_fields();
		}

		/**
		 * Filter settings values for metabox before save to database.
		 *
		 * @param array  $settings_values Array of settings values.
		 * @param string $settings_metabox_key Metabox key.
		 * @param string $settings_screen_id Screen ID.
		 * @return array $settings_values.
		 */
		public function filter_saved_fields( $settings_values = array(), $settings_metabox_key = '', $settings_screen_id = '' ) {
			if ( ( $settings_screen_id === $this->settings_screen_id ) && ( $settings_metabox_key === $this->settings_metabox_key ) ) {

				if ( ( ! isset( $settings_values['course'] ) ) || ( '-1' === $settings_values['course'] ) ) {
					$settings_values['course'] = '';
				}

				if ( ( ! isset( $settings_values['lesson'] ) ) || ( '-1' === $settings_values['lesson'] ) ) {
					$settings_values['lesson'] = '';
				}

				if ( ( isset( $settings_values['startOnlyRegisteredUser'] ) ) && ( 'on' === $settings_values['startOnlyRegisteredUser'] ) ) {
					$settings_values['startOnlyRegisteredUser'] = true;
				} else {
					$settings_values['startOnlyRegisteredUser'] = false;
				}

				if ( ! isset( $settings_values['prerequisiteList'] ) ) {
					$settings_values['prerequisiteList'] = '';
				}

				if ( '-1' === $settings_values['prerequisiteList'] ) {
					$settings_values['prerequisiteList'] = '';
				}
				if ( ! empty( $settings_values['prerequisiteList'] ) ) {
					$settings_values['prerequisite'] = true;
				} else {
					$settings_values['prerequisite'] = '';
				}
			}

			return $settings_values;
		}

		// End of functions.
	}

	add_filter(
		'learndash_post_settings_metaboxes_init_' . learndash_get_post_type_slug( 'quiz' ),
		function( $metaboxes = array() ) {
			if ( ( ! isset( $metaboxes['LearnDash_Settings_Metabox_Quiz_Access_Settings'] ) ) && ( class_exists( 'LearnDash_Settings_Metabox_Quiz_Access_Settings' ) ) ) {
				$metaboxes['LearnDash_Settings_Metabox_Quiz_Access_Settings'] = LearnDash_Settings_Metabox_Quiz_Access_Settings::add_metabox_instance();
			}

			return $metaboxes;
		},
		50,
		1
	);
}

