function _dozent_get_course_ratings_and_sync( $course_id = 0 ) {
		global $wpdb;

		$course_id = dozent_get_post_id( $course_id );

		$rating_info = $wpdb->get_row( "SELECT COUNT(ID) as rating_count, SUM(rating) as rating_sum FROM {$wpdb->dozent_reviews} WHERE course_id = {$course_id} AND status = 1 ;" );

		$ratingCount = 0;
		$ratingSum   = 0;

		if ( ! empty( $rating_info->rating_count ) ) {
			$ratingCount = (int) $rating_info->rating_count;
		}

		if ( ! empty( $rating_info->rating_sum ) ) {
			$ratingSum = (int) $rating_info->rating_sum;
		}

		$five_star_count  = (int) $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->dozent_reviews} WHERE course_id = {$course_id} AND rating = 5 AND status = 1 ;" );
		$four_star_count  = (int) $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->dozent_reviews} WHERE course_id = {$course_id} AND rating = 4 AND status = 1 ;" );
		$three_star_count = (int) $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->dozent_reviews} WHERE course_id = {$course_id} AND rating = 3 AND status = 1 ;" );
		$two_star_count   = (int) $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->dozent_reviews} WHERE course_id = {$course_id} AND rating = 2 AND status = 1 ;" );
		$one_star_count   = (int) $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->dozent_reviews} WHERE course_id = {$course_id} AND rating = 1 AND status = 1 ;" );

		$five_percent = 0;
		if ( $five_star_count > 0 ) {
			$five_percent = ( $five_star_count * 100 ) / $ratingCount;
		}
		$four_percent = 0;
		if ( $four_star_count > 0 ) {
			$four_percent = ( $four_star_count * 100 ) / $ratingCount;
		}
		$three_percent = 0;
		if ( $three_star_count > 0 ) {
			$three_percent = ( $three_star_count * 100 ) / $ratingCount;
		}
		$two_percent = 0;
		if ( $two_star_count > 0 ) {
			$two_percent = ( $two_star_count * 100 ) / $ratingCount;
		}
		$one_percent = 0;
		if ( $one_star_count > 0 ) {
			$one_percent = ( $one_star_count * 100 ) / $ratingCount;
		}

		$rating_avg = '0.00';
		if ( $ratingCount > 0 ) {
			$rating_avg = $ratingSum / $ratingCount;
		}

		$rating_overview = [
			'rating_count' => $ratingCount,
			'rating_avg'   => number_format( $rating_avg, 2 ),
			'rating_stats' => [
				5 => [
					'count'   => $five_star_count,
					'percent' => number_format( $five_percent ),
				],
				4 => [
					'count'   => $four_star_count,
					'percent' => number_format( $four_percent ),
				],
				3 => [
					'count'   => $three_star_count,
					'percent' => number_format( $three_percent ),
				],
				2 => [
					'count'   => $two_star_count,
					'percent' => number_format( $two_percent ),
				],
				1 => [
					'one_count' => $one_star_count,
					'percent'   => number_format( $one_percent ),
				]
			]
		];

		//Save in post meta
		update_post_meta( $course_id, '_rating_count', dozent_array_get( 'rating_count', $rating_overview ) );
		update_post_meta( $course_id, '_rating_avg', dozent_array_get( 'rating_avg', $rating_overview ) );
		update_post_meta( $course_id, '_rating_overview', $rating_overview );

		return apply_filters( '_dozent_get_course_ratings_and_sync', $rating_overview, $course_id );
	}