电单车充满自停退款逻辑

jsowell-pile/src/main/java/com/jsowell/pile/service/programlogic/DelayMerchantProgramLogic.java

@@ -44,6 +44,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.text.ParseException;
 import java.time.LocalDateTime;
 import java.util.List;
@@ -522,13 +523,37 @@ public class DelayMerchantProgramLogic extends AbstractProgramLogic {
         dto.setOrderDetail(orderDetail);
         transactionService.doUpdateOrder(dto);
 
-        // 充电时间大于30秒不退费
-        int chargingTime = message.getChargingTime();
-        if (chargingTime < 30) {
-            // 退款
+        // 充满自停需要退款
+        BigDecimal bigDecimal = new BigDecimal("5");
+        if (bigDecimal.compareTo(orderBasicInfo.getPayAmount()) == 0) {
+            // 计算电单车退款金额
+            calculateEBikeRefund(orderBasicInfo, orderDetail, message);
+
+            // 订单退款
+            refundOrder(orderBasicInfo);
         }
     }
 
+    /**
+     * 计算电单车退款逻辑
+     * @param orderBasicInfo
+     */
+    private void calculateEBikeRefund(OrderBasicInfo orderBasicInfo, OrderDetail orderDetail, EBikeMessageCmd03 message) {
+        // 耗电量
+        BigDecimal consumedEnergy = message.getConsumedEnergy();
+
+        // 计费模板
+        BigDecimal flatElectricityPrice = orderDetail.getFlatElectricityPrice(); // x元/每度
+        BigDecimal flatServicePrice = orderDetail.getFlatServicePrice(); // x元/每度
+
+        // 消费金额
+        BigDecimal consumeAmount = consumedEnergy.multiply(flatElectricityPrice);
+
+        // 更新退款金额 = 支付金额 - 优惠后总消费金额
+        BigDecimal refundAmount = orderBasicInfo.getPayAmount().subtract(consumeAmount).setScale(2, RoundingMode.DOWN);
+        orderBasicInfo.setRefundAmount(refundAmount);
+    }
+
     /**
      * 第三方平台结算订单（目前给华为用）
      * @param data