public function edd_complete_purchase( $payment_id, $payment, $customer ) {
		$enable_earning = (bool) dozent_get_option( 'enable_dozent_earning' );

		$cart_details = $payment->cart_details;

		if ( is_array( $cart_details ) ) {
			foreach ( $cart_details as $cart_index => $download ) {
				$course_ids = dozent_get_attached_course_ids_to_product( $download['id'] );

				if ( dozent_count( $course_ids ) ) {
					foreach ( $course_ids as $course_id ) {
						dozent_enrol_course( $course_id, $customer->user_id, $payment_id );
					}

					//Add Earning Data
					if ( $enable_earning ) {
						$this->add_earning_data( $course_ids, $download['id'], $payment_id );
					}
				}

			}
		}
	}