EssaysReportsGenerator::getGroupEssays()

	protected function getGroupEssays()
	{
		if ($this->hasArg('course') && ! $this->args['course']) {
			$courseIds = learndash_group_enrolled_courses(
				bp_ld_sync('buddypress')->helpers->getLearndashGroupId($this->args['group'])
			);
		} else {
			$courseIds = [$this->args['course']];
		}

		$args = [
			'posts_per_page' => $this->args['length'],
			'page'           => $this->args['start'] / $this->args['length'] + 1,
			'post_type'      => learndash_get_post_type_slug('essays'),
			'post_status' => $this->args['completed']? 'graded' : 'not_graded',
			'meta_query' => [
				[
					'key' => 'course_id',
					'value' => $courseIds
				]
			]
		];

		if ($this->hasArg('user') && $this->args['user']) {
			$args['author'] = $this->args['user'];
		}

		$this->registerQueryHooks();
		$query = new WP_Query($args);
		$this->unregisterQueryHooks();

		return $query;
	}