BP_REST_Learndash_Courses_Endpoint::get_items( WP_REST_Request $request )

	public function get_items( $request ) {

		$args = array(
			'post_type'      => 'sfwd-courses',
			'order'          => ( ! empty( $request['order'] ) ? $request['order'] : 'desc' ),
			'orderby'        => ( ! empty( $request['orderby'] ) ? $request['orderby'] : 'date' ),
			'paged'          => ( ! empty( $request['page'] ) ? $request['page'] : 1 ),
			'posts_per_page' => ( ! empty( $request['per_page'] ) ? $request['per_page'] : 10 ),
			'post_status'    => ( ! empty( $request['status'] ) ? implode( ' ', $request['status'] ) : 'publish' ),
		);

		if ( ! empty( $request['search'] ) ) {
			$args['s'] = sanitize_title( trim( $request['search'] ) );
		}

		if ( ! empty( $request['author'] ) ) {
			$args['author'] = $request['author'];
		}

		if ( ! empty( $request['author_exclude'] ) ) {
			$args['author__not_in'] = $request['author_exclude'];
		}

		if ( ! empty( $request['exclude'] ) ) {
			$args['post__not_in'] = $request['exclude'];
		}

		if ( ! empty( $request['include'] ) ) {
			$args['post__in'] = $request['include'];
		}

		if ( ! empty( $request['offset'] ) ) {
			$args['offset'] = $request['offset'];
		}

		$args['date_query'] = array();
		// Set before into date query. Date query must be specified as an array of an array.
		if ( isset( $request['before'] ) ) {
			$args['date_query'][0]['before'] = $request['before'];
		}

		// Set after into date query. Date query must be specified as an array of an array.
		if ( isset( $request['after'] ) ) {
			$args['date_query'][0]['after'] = $request['after'];
		}

		if ( ! empty( $request['course_category'] ) ) {
			if ( in_array( 0, $request['course_category'], true ) ) {
				$args['tax_query'][] = array(
					'taxonomy' => 'ld_course_category',
					'operator' => 'NOT EXISTS',
				);
				$categories          = array();
				foreach ( $request['course_category'] as $k => $v ) {
					if ( ! empty( $v ) ) {
						$categories[] = $v;
					}
				}
				$request['course_category'] = $categories;
				unset( $categories );
			}

			if ( ! empty( $request['course_category'] ) ) {
				$args['tax_query'][] = array(
					'taxonomy'         => 'ld_course_category',
					'field'            => 'term_id',
					'terms'            => $request['course_category'],
					'include_children' => false,
				);
			}
		}

		if ( ! empty( $request['course_category_exclude'] ) ) {
			$args['tax_query'][] = array(
				'taxonomy'         => 'ld_course_category',
				'field'            => 'term_id',
				'terms'            => $request['course_category_exclude'],
				'include_children' => false,
				'operator'         => 'NOT IN',
			);
		}

		if ( ! empty( $request['course_tag'] ) ) {
			$args['tax_query'][] = array(
				'taxonomy'         => 'ld_course_tag',
				'field'            => 'term_id',
				'terms'            => $request['course_tag'],
				'include_children' => false,
			);
		}

		if ( ! empty( $request['course_tag_exclude'] ) ) {
			$args['tax_query'][] = array(
				'taxonomy'         => 'ld_course_tag',
				'field'            => 'term_id',
				'terms'            => $request['course_tag_exclude'],
				'include_children' => false,
				'operator'         => 'NOT IN',
			);
		}

		if ( isset( $request['group_id'] ) && ! empty( $request['group_id'] ) ) {
			$group_id         = bp_ld_sync( 'buddypress' )->helpers->getLearndashGroupId( $request['group_id'] );
			$course_ids       = learndash_group_enrolled_courses( $group_id );
			$args['post__in'] = ! empty( $course_ids ) ? $course_ids : array( 0 );
			unset( $args['author'] );
		}

		/**
		 * Filter the query arguments for the request.
		 *
		 * @param array           $args    Key value array of query var to query value.
		 * @param WP_REST_Request $request The request sent to the API.
		 *
		 * @since 0.1.0
		 */
		$args = apply_filters( 'bp_rest_learndash_courses_get_items_query_args', $args, $request );

		$courses_query = new WP_Query( $args );
		$courses       = $courses_query->posts;

		$retval = array();
		if ( ! empty( $courses ) ) {
			foreach ( $courses as $course ) {
				$retval[] = $this->prepare_response_for_collection(
					$this->prepare_item_for_response( $course, $request )
				);
			}
		}

		$response = rest_ensure_response( $retval );
		$response = bp_rest_response_add_total_headers( $response, $courses_query->found_posts, $args['posts_per_page'] );

		/**
		 * Fires after a list of courses is fetched via the REST API.
		 *
		 * @param array            $courses  Fetched Courses.
		 * @param WP_REST_Response $response The response data.
		 * @param WP_REST_Request  $request  The request sent to the API.
		 *
		 * @since 0.1.0
		 */
		do_action( 'bp_rest_learndash_courses_get_items', $courses, $response, $request );

		return $response;
	}