CourseBuilder

Source

class CourseBuilder {

	public function __construct() {
		//Frontend Course Save
		add_action( 'wp_ajax_front_save_course', [ $this, 'front_save_course' ] );

		add_action( 'save_post_dozent_course', [ $this, '_save_course' ], 10, 2 );

		add_action( 'dozent/save_course', [ $this, 'attach_current_instructor' ] );
		add_action( 'dozent/course_metabox/saved', [ $this, 'save_course_access_method' ] );

		add_action( 'dozent_course/course_tab_content/before/curriculum', [ $this, 'course_builder' ] );
		add_action( 'wp_ajax_dozent_save_new_section', [ $this, 'save_new_section' ] );
		add_action( 'wp_ajax_dozent_update_section', [ $this, 'update_section' ] );
		add_action( 'wp_ajax_dozent_save_lecture', [ $this, 'dozent_save_lecture' ] );
		add_action( 'wp_ajax_load_lecture_editor', [ $this, 'load_lecture_editor' ] );
		add_action( 'wp_ajax_lecture_load_edit', [ $this, 'lecture_load_edit' ] );
		add_action( 'wp_ajax_delete_course_content', [ $this, 'delete_course_content' ] );
		add_action( 'wp_ajax_sorting_curriculum_items', [ $this, 'sorting_curriculum_items' ] );
		add_action( 'wp_ajax_delete_section', [ $this, 'delete_section' ] );

		//Sync Content with Course
		add_action( 'dozent/lecture/saved', [ $this, 'sync_content_with_course' ], 10, 3 );
		add_action( 'dozent/quiz/saved', [ $this, 'sync_content_with_course' ], 10, 3 );

	}

	public function front_save_course(){
		$course_id = dozent_input_text( 'frontend_course_id' );
		$course_title = dozent_input_text( 'course_title' );
		$short_description = dozent_input_textarea( 'short_description' );
		$course_description = ! empty( $_POST[ 'course_description' ] ) ? wp_kses_post( $_POST[ 'course_description' ] ) : '';
		$course_thumbnail = (int) dozent_input_textarea( 'course_thumbnail' );
		$save_type = dozent_input_text( 'save_type' );

		$front_course = get_post( $course_id );
		$tax_input = dozent_input_array_field( 'tax_input' );

		$course_data = [
			'ID'            => $course_id,
			'post_title'    => $course_title,
			'post_name'     => sanitize_title( $course_title ),
			'post_content'  => $course_description,
			'post_excerpt'  => $short_description,
		];

		/**
		 * Course Publish, save as draft or submit for review.
		 */

		if ( $save_type === 'save' ){
			$course_data['post_status'] = 'draft';
		}else{
			if ( current_user_can( 'instructor_can_publish_course' ) ){
				$course_data['post_status'] = 'publish';
			}else{
				$course_data['post_status'] = 'pending';
			}
		}

		wp_update_post( $course_data );

		/**
		 * Update or remove thumbnail
		 */

		if ( $course_thumbnail ){
			update_post_meta( $course_id , '_thumbnail_id', $course_thumbnail);
		} else {
			delete_post_meta( $course_id , '_thumbnail_id' );
		}

		/**
		 * Adding course categories
		 */

		if ( dozent_count( $tax_input ) ) {
			foreach ( $tax_input as $taxonomy => $tags ) {
				$taxonomy_obj = get_taxonomy( $taxonomy );
				if ( ! $taxonomy_obj ) {
					/* translators: %s: taxonomy name */
					_doing_it_wrong( __FUNCTION__, sprintf( __( 'Invalid taxonomy: %s.', 'dozent' ), $taxonomy ), '4.4.0' );
					continue;
				}

				// array = hierarchical, string = non-hierarchical.
				if ( is_array( $tags ) ) {
					$tags = array_filter( $tags );
				}
				wp_set_post_terms( $course_id, $tags, $taxonomy );
			}
		}

		/**
		 * Supports for others meta save
		 */

		$redirect_url = null;
		if ( $front_course->post_status === 'auto-draft' ){
			$redirect_url = dozent_get_dashboard_permalink( 'my-courses/create-course' );
			$redirect_url = add_query_arg( [ 'course_id' => $course_id ], $redirect_url );
		}

		if ( $save_type === 'publish' ){
			$redirect_url = dozent_get_dashboard_permalink( 'my-courses' );
		}

		$response = [
			'redirect_url'  => $redirect_url,
		];

		wp_send_json_success( $response );
	}

	/**
	 * Fire action hook when save the course
	 *
	 *
	 * @since DozentLMS 1.0.0
	 *
	 *
	 * @param  int  $post_ID  Course ID
	 * @param  object  $post  Course Object as post class instance
	 */

	public function _save_course( $post_ID, $post ) {
		do_action( 'dozent/save_course', $post_ID, $post );
		do_action( 'dozent/course_metabox/saved', $post_ID );
	}


	/**
	 * Attach current instructor with course
	 *
	 *
	 * @since DozentLMS 1.0.0
	 *
	 * @see attach_current_instructor();
	 */

	public function attach_current_instructor( $post_ID ){
		dozent_instructor_attach_course( $post_ID, get_current_user_id() );
	}

	/**
	 * Save course acces method
	 *
	 *
	 * @since DozentLMS 1.0.0
	 *
	 *
	 * @param $post_ID
	 */

	function save_course_access_method( $post_ID ) {
		$course_price_type = dozent_input_text( 'dozent_course_price_type' );
		update_post_meta( $post_ID, '_course_price_type', $course_price_type );
	}


	public function course_builder( $tab ) {
		include_once DOZENT_ABSPATH . 'views/course_builder/course_builder.php';
	}

	public function frontend_course_builder(){

	}

	public function save_new_section() {
		$course_id        = (int) dozent_input_text( 'course_id' );
		$section_name     = dozent_input_text( 'section_name' );
		$section_summery  = dozent_input_textarea( 'section_summery' );
		$section_order_id = dozent_get_next_curriculum_item_order_id( $course_id );

		if ( ! $section_name ) {
			wp_send_json_error();
		}

		$post_arr   = apply_filters( 'dozent_new_section_attr', [
			'post_type'    => 'dozent_section',
			'post_title'   => $section_name,
			'post_content' => $section_summery,
			'post_status'  => 'publish',
			'post_author'  => get_current_user_id(),
			'post_parent'  => $course_id,
			'menu_order'   => $section_order_id,
		] );
		$section_id = wp_insert_post( $post_arr );

		ob_start();
		include DOZENT_ABSPATH . 'views/course_builder/curriculum.php';
		$course_contents = ob_get_clean();

		wp_send_json_success( [ 'curriculum' => $course_contents ] );
	}

	/**
	 * Update Course Section
	 *
	 * @since DozentLMS 1.0.0
	 */
	public function update_section() {
		$course_id       = (int) dozent_input_text( 'course_id' );
		$section_id      = (int) dozent_input_text( 'section_id' );
		$section_name    = dozent_input_text( 'section_name' );
		$section_summery = dozent_input_textarea( 'section_summery' );

		if ( ! $section_name ) {
			wp_send_json_error();
		}


		$post_arr = apply_filters( 'dozent_update_section_attr', [
			'ID'           => $section_id,
			'post_title'   => $section_name,
			'post_content' => $section_summery,
		] );

		do_action( 'dozent/section/update/before', $course_id, $post_arr );

		wp_update_post( $post_arr );

		do_action( 'dozent/section/update/after', $course_id, $post_arr );

		ob_start();
		include DOZENT_ABSPATH . 'views/course_builder/curriculum.php';
		$course_contents = ob_get_clean();

		wp_send_json_success( [ 'curriculum' => $course_contents ] );
	}

	/**
	 * Add Lecture Action
	 *
	 * @since DozentLMS 1.0.0
	 */
	public function dozent_save_lecture() {
		$course_id       = (int) dozent_input_text( 'course_id' );
		$item_id         = (int) dozent_input_text( 'item_id' );
		$title           = dozent_input_text( 'title' );
		$lecture_content = dozent_input_array_field( 'lecture_content' );
		$section_id      = dozent_input_array_field( 'section_id' );
		$preview         = dozent_input_text( 'lecture_preview' );

		$post_arr = [
			'post_type'    => 'dozent_lecture',
			'post_title'   => $title,
			'post_content' => $lecture_content,
			'post_status'  => 'publish',
			'post_author'  => get_current_user_id(),
			'post_parent'  => $section_id,
		];

		if ( $item_id ) {
			$item                   = get_post( $item_id );
			$post_arr['ID']         = $item_id;
			$post_arr['menu_order'] = $item->menu_order;
		} else {
			$menu_order_id          = dozent_get_next_curriculum_item_order_id( $course_id );
			$post_arr['menu_order'] = $menu_order_id;
		}

		$lecture_id = wp_insert_post( $post_arr );
		if ( $lecture_id ) {
			update_post_meta( $lecture_id, '_dozent_course_id', $course_id );

			//Save Video Info
			$video = dozent_input_array_field( 'video' );
			update_post_meta( $lecture_id, '_video', $video );

			/**
			 * Adding Attachments if users select anyone.
			 */

			$attachments = dozent_input_array_field( 'attachments' );
			if ( dozent_count( $attachments ) ) {
				update_post_meta( $lecture_id, '_attachments', $attachments );
			} else {
				delete_post_meta( $lecture_id, '_attachments' );
			}


			if ( $preview ) {
				update_post_meta( $lecture_id, '_lecture_preview', $preview );
			} else {
				delete_post_meta( $lecture_id, '_lecture_preview' );
			}

			//Register Action Hooks
			do_action( 'dozent/lecture/saved', $lecture_id, $course_id, $post_arr );
			if ( $lecture_id ) {
				do_action( 'dozent/lecture/updated', $lecture_id, $course_id, $post_arr );
			} else {
				do_action( 'dozent/lecture/created', $lecture_id, $course_id, $post_arr );
			}

		}

		ob_start();
		include DOZENT_ABSPATH . 'views/course_builder/curriculum.php';
		$course_contents = ob_get_clean();

		wp_send_json_success( [ 'lecture_id' => $lecture_id, 'curriculum' => $course_contents ] );
	}

	/**
	 * Append lecture editor via wp_editor
	 *
	 * @since DozentLMS 1.0.0
	 */
	public function load_lecture_editor() {
		ob_start();
		wp_editor( '', 'lecture_content', [ 'textarea_rows' => 4 ] );
		$editor_html = ob_get_clean();

		wp_send_json_success( [ 'editor_html' => $editor_html ] );
	}

	public function lecture_load_edit() {
		$item_id = (int) dozent_input_text( 'item_id' );
		$item    = get_post( $item_id );

		ob_start();
		include DOZENT_ABSPATH . 'views/course_builder/edit_lecture.php';
		$html = ob_get_clean();

		wp_send_json_success( [ 'html' => $html ] );
	}

	/**
	 * Delete course content
	 *
	 * @since DozentLMS 1.0.0
	 */
	public function delete_course_content() {
		global $wpdb;
		$post_id = (int) dozent_input_text( 'item_id' );

		do_action( 'dozent/delete_course_content/before', $post_id );

		wp_delete_post( $post_id, true );
		$wpdb->delete( $wpdb->postmeta, [ 'post_id' => $post_id ] );
		do_action( 'dozent/delete_course_content/after', $post_id );
	}

	/**
	 * Sorting curriculum Items
	 *
	 * @since DozentLMS 1.0.0
	 */
	public function sorting_curriculum_items() {
		global $wpdb;
		$sections = dozent_input_array_field( 'sections' );

		if ( dozent_count( $sections ) ) {
			$item_i = 1;

			foreach ( $sections as $skey => $section ) {
				$section_id = dozent_array_get( 'section_id', $section );

				//Sorting Section
				$wpdb->update( $wpdb->posts, [ 'menu_order' => $skey ], [ 'ID' => $section_id ] );

				$item_ids = dozent_array_get( 'item_ids', $section );
				if ( dozent_count( $item_ids ) ) {
					foreach ( $item_ids as $ikey => $item_id ) {
						$wpdb->update( $wpdb->posts, [ 'post_parent' => $section_id, 'menu_order' => $item_i ],
							[ 'ID' => $item_id ] );
						$item_i ++;
					}
				}
			}
		}
	}

	/**
	 * Delete Section from the course curriculum
	 *
	 * @since DozentLMS 1.0.0
	 */

	public function delete_section() {
		$post_id = (int) dozent_input_text( 'section_id' );
		$this->_delete_section( $post_id );
	}

	/**
	 * @param $section_id
	 *
	 * Delete Section and all it's related, lecture, quiz, assignments, etc.
	 */
	public function _delete_section( $section_id ) {
		global $wpdb;

		do_action( 'dozent/delete_section/before', $section_id );

		$lecture_ids = (array) $wpdb->get_col( "SELECT ID FROM {$wpdb->posts} WHERE post_parent = {$section_id} " );

		wp_delete_post( $section_id, true );

		/**
		 * Delete all data related this section.
		 */
		$wpdb->delete( $wpdb->posts, [ 'post_parent' => $section_id ] );
		if ( dozent_count( $lecture_ids ) ) {
			$lecture_ids = implode( ',', array_map( 'absint', $lecture_ids ) );
			$wpdb->query( "DELETE FROM {$wpdb->postmeta} WHERE post_id IN({$lecture_ids})" );
		}

		do_action( 'dozent/delete_section/after', $section_id );
	}

	public function sync_content_with_course( $lecture_id, $course_id, $post_arr ) {
		sync_course_with_contents( $course_id );
	}

}
Expand full source code Collapse full source code
Methods

__construct
_delete_section
_save_course — Fire action hook when save the course
attach_current_instructor — Attach current instructor with course
course_builder
delete_course_content — Delete course content
delete_section — Delete Section from the course curriculum
dozent_save_lecture — Add Lecture Action
front_save_course
frontend_course_builder
lecture_load_edit
load_lecture_editor — Append lecture editor via wp_editor
save_course_access_method — Save course acces method
save_new_section
sorting_curriculum_items — Sorting curriculum Items
sync_content_with_course
update_section — Update Course Section