protected function set_merge_data( $code ) {

		$transaction = $this->post;
		$order       = $transaction->get_order();

		switch ( $code ) {

			case '{{CUSTOMER_ADDRESS}}':
				$code = $order->get_customer_full_address();
				break;

			case '{{CUSTOMER_NAME}}':
				$code = $order->get_customer_name();
				break;

			case '{{CUSTOMER_PHONE}}':
				$code = $order->get( 'billing_phone' );
				break;

			case '{{ORDER_ID}}':
				$code = $order->get( 'id' );
				break;

			case '{{ORDER_URL}}':
				$code = esc_url( $order->get_view_link() );
				break;

			case '{{PLAN_TITLE}}':
				$code = $order->get( 'plan_title' );
				break;

			case '{{PRODUCT_TITLE}}':
				$code = $order->get( 'product_title' );
				break;

			case '{{PRODUCT_TITLE_LINK}}':
				$permalink = esc_url( get_permalink( $order->get( 'product_id' ) ) );
				if ( $permalink ) {
					$title = $this->set_merge_data( '{{PRODUCT_TITLE}}' );
					$code  = '<a href="' . $permalink . '">' . $title . '</a>';
				}
				break;

			case '{{PRODUCT_TYPE}}':
				$obj = $order->get_product();
				if ( $obj ) {
					$code = $obj->get_post_type_label( 'singular_name' );
				} else {
					$code = _x( 'Item', 'generic product type description', 'lifterlms' );
				}
				break;

			case '{{TRANSACTION_AMOUNT}}':
				$code = $transaction->get_price( 'amount' );
				break;

			case '{{TRANSACTION_DATE}}':
				$code = $transaction->get_date( 'date', get_option( 'date_format' ) . ' ' . get_option( 'time_format' ) );
				break;

			case '{{TRANSACTION_ID}}':
				$code = $transaction->get( 'id' );
				break;

			case '{{TRANSACTION_SOURCE}}':
				$code = $transaction->get( 'gateway_source_description' );
				break;

		}

		return $code;

	}