update 计算订单优惠金额

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

@@ -957,26 +957,17 @@ public abstract class AbstractProgramLogic implements InitializingBean {
             // 尖时段用电量
             BigDecimal sharpUsedElectricity = orderDetail.getSharpUsedElectricity();
             if (sharpUsedElectricity != null) {
-                // 计算该时段电费单价
+                // 该时段电费单价与orderDetail中的电价比较取最小值
-                BigDecimal electricityPrice = billingTemplateVO.getSharpElectricityPrice();
+                // BigDecimal electricityPrice = billingTemplateVO.getSharpElectricityPrice();
+                BigDecimal electricityPrice = getMinWithPositiveConstraint(billingTemplateVO.getSharpElectricityPrice(), orderDetail.getSharpElectricityPrice());
                 // 计算该时段电费 = 电费单价 x 用电量
-                BigDecimal electricityAmount = BigDecimal.ZERO;
+                BigDecimal electricityAmount = electricityPrice.multiply(sharpUsedElectricity).setScale(2, RoundingMode.DOWN);
-                // 如果优惠模板电价低于orderDetail快照中的电价则计算优惠金额
-                if (electricityPrice.compareTo(orderDetail.getSharpElectricityPrice()) < 0) {
-                    // 计算该时段电费优惠金额 = 优惠前电费 - 优惠后电费
-                    electricityAmount = electricityPrice.multiply(sharpUsedElectricity).setScale(2, RoundingMode.DOWN);
-                }
 
-
+                // 该时段服务费单价与orderDetail中的服务费比较取最小值
-                // 计算该时段服务费单价
+                // BigDecimal servicePrice = billingTemplateVO.getSharpServicePrice();
-                BigDecimal servicePrice = billingTemplateVO.getSharpServicePrice();
+                BigDecimal servicePrice = getMinWithPositiveConstraint(billingTemplateVO.getSharpServicePrice(), orderDetail.getSharpServicePrice());
                 // 计算该时段服务费
-                BigDecimal serviceAmount = BigDecimal.ZERO;
+                BigDecimal serviceAmount = servicePrice.multiply(sharpUsedElectricity).setScale(2, RoundingMode.DOWN);
-                // 如果优惠模板中服务费低于orderDetail快照中的服务费价则计算优惠金额
-                if (servicePrice.compareTo(orderDetail.getSharpServicePrice()) < 0) {
-                    // 计算该时段服务费优惠金额 = 优惠前服务费 - 优惠后服务费
-                    serviceAmount = servicePrice.multiply(sharpUsedElectricity).setScale(2, RoundingMode.DOWN);
-                }
 
                 // 汇总
                 afterDiscountElectricityAmount = afterDiscountElectricityAmount.add(electricityAmount);
@@ -988,24 +979,14 @@ public abstract class AbstractProgramLogic implements InitializingBean {
             BigDecimal peakUsedElectricity = orderDetail.getPeakUsedElectricity();
             if (peakUsedElectricity != null) {
                 // 计算该时段电费单价
-                BigDecimal electricityPrice = billingTemplateVO.getPeakElectricityPrice();
+                BigDecimal electricityPrice = getMinWithPositiveConstraint(billingTemplateVO.getPeakElectricityPrice(), orderDetail.getPeakElectricityPrice());
                 // 计算该时段电费 = 电费单价 x 用电量
-                BigDecimal electricityAmount = BigDecimal.ZERO;
+                BigDecimal electricityAmount = electricityPrice.multiply(peakUsedElectricity).setScale(2, RoundingMode.DOWN);
-                // 如果优惠模板电价低于orderDetail快照中的电价则计算优惠金额
-                if (electricityPrice.compareTo(orderDetail.getPeakElectricityPrice()) < 0) {
-                    // 计算该时段电费优惠金额 = 优惠前电费 - 优惠后电费
-                    electricityAmount = electricityPrice.multiply(peakUsedElectricity).setScale(2, RoundingMode.DOWN);
-                }
 
                 // 计算该时段服务费
-                BigDecimal servicePrice = billingTemplateVO.getPeakServicePrice();
+                BigDecimal servicePrice = getMinWithPositiveConstraint(billingTemplateVO.getPeakServicePrice(), orderDetail.getPeakServicePrice());
                 // 计算该时段服务费 = 服务费单价 x 用电量
-                BigDecimal serviceAmount = BigDecimal.ZERO;
+                BigDecimal serviceAmount = servicePrice.multiply(peakUsedElectricity).setScale(2, RoundingMode.DOWN);
-                // 如果优惠模板中服务费低于orderDetail快照中的服务费价则计算优惠金额
-                if (servicePrice.compareTo(orderDetail.getPeakServicePrice()) < 0) {
-                    // 计算该时段服务费优惠金额 = 优惠前服务费 - 优惠后服务费
-                    serviceAmount = servicePrice.multiply(peakUsedElectricity).setScale(2, RoundingMode.DOWN);
-                }
 
                 // 汇总
                 afterDiscountElectricityAmount = afterDiscountElectricityAmount.add(electricityAmount);
@@ -1016,25 +997,14 @@ public abstract class AbstractProgramLogic implements InitializingBean {
             BigDecimal flatUsedElectricity = orderDetail.getFlatUsedElectricity();
             if (flatUsedElectricity != null) {
                 // 计算该时段电费单价
-                BigDecimal electricityPrice = billingTemplateVO.getFlatElectricityPrice();
+                BigDecimal electricityPrice = getMinWithPositiveConstraint(billingTemplateVO.getFlatElectricityPrice(), orderDetail.getFlatElectricityPrice());
                 // 计算该时段电费 = 电费单价 x 用电量
-                BigDecimal electricityAmount = BigDecimal.ZERO;
+                BigDecimal electricityAmount = electricityPrice.multiply(flatUsedElectricity).setScale(2, RoundingMode.DOWN);
-                // 如果优惠模板电价低于orderDetail快照中的电价则计算优惠金额
-                if (electricityPrice.compareTo(orderDetail.getFlatElectricityPrice()) < 0) {
-                    // 计算该时段电费优惠金额 = 优惠前电费 - 优惠后电费
-                    electricityAmount = electricityPrice.multiply(flatUsedElectricity).setScale(2, RoundingMode.DOWN);
-                }
-
 
                 // 计算该时段服务费单价
-                BigDecimal servicePrice = billingTemplateVO.getFlatServicePrice();
+                BigDecimal servicePrice = getMinWithPositiveConstraint(billingTemplateVO.getFlatServicePrice(), orderDetail.getFlatServicePrice());
                 // 计算该时段服务费
-                BigDecimal serviceAmount = BigDecimal.ZERO;
+                BigDecimal serviceAmount = servicePrice.multiply(flatUsedElectricity).setScale(2, RoundingMode.DOWN);
-                // 如果优惠模板中服务费低于orderDetail快照中的服务费价则计算优惠金额
-                if (servicePrice.compareTo(orderDetail.getFlatServicePrice()) < 0) {
-                    // 计算该时段服务费优惠金额 = 优惠前服务费 - 优惠后服务费
-                    serviceAmount = servicePrice.multiply(flatUsedElectricity).setScale(2, RoundingMode.DOWN);
-                }
 
                 // 汇总
                 afterDiscountElectricityAmount = afterDiscountElectricityAmount.add(electricityAmount);
@@ -1045,24 +1015,14 @@ public abstract class AbstractProgramLogic implements InitializingBean {
             BigDecimal valleyUsedElectricity = orderDetail.getValleyUsedElectricity();
             if (valleyUsedElectricity != null) {
                 // 计算该时段电费单价
-                BigDecimal electricityPrice = billingTemplateVO.getValleyElectricityPrice();
+                BigDecimal electricityPrice = getMinWithPositiveConstraint(billingTemplateVO.getValleyElectricityPrice(), orderDetail.getValleyElectricityPrice());
                 // 计算该时段电费 = 电费单价 x 用电量
-                BigDecimal electricityAmount = BigDecimal.ZERO;
+                BigDecimal electricityAmount = electricityPrice.multiply(valleyUsedElectricity).setScale(2, RoundingMode.DOWN);
-                // 如果优惠模板电价低于orderDetail快照中的电价则计算优惠金额
-                if (electricityPrice.compareTo(orderDetail.getValleyElectricityPrice()) < 0) {
-                    // 计算该时段电费优惠金额 = 优惠前电费 - 优惠后电费
-                    electricityAmount = electricityPrice.multiply(valleyUsedElectricity).setScale(2, RoundingMode.DOWN);
-                }
 
                 // 计算该时段服务费单价
-                BigDecimal servicePrice = billingTemplateVO.getValleyServicePrice();
+                BigDecimal servicePrice = getMinWithPositiveConstraint(billingTemplateVO.getValleyServicePrice(), orderDetail.getValleyServicePrice());
                 // 计算该时段服务费
-                BigDecimal serviceAmount = BigDecimal.ZERO;
+                BigDecimal serviceAmount = servicePrice.multiply(valleyUsedElectricity).setScale(2, RoundingMode.DOWN);
-                // 如果优惠模板中服务费低于orderDetail快照中的服务费价则计算优惠金额
-                if (servicePrice.compareTo(orderDetail.getValleyServicePrice()) < 0) {
-                    // 计算该时段服务费优惠金额 = 优惠前服务费 - 优惠后服务费
-                    serviceAmount = servicePrice.multiply(valleyUsedElectricity).setScale(2, RoundingMode.DOWN);
-                }
 
                 // 汇总
                 afterDiscountElectricityAmount = afterDiscountElectricityAmount.add(electricityAmount);
@@ -1108,6 +1068,26 @@ public abstract class AbstractProgramLogic implements InitializingBean {
                 orderCode, memberId, discountAmount, electricityAmountDiscount, serviceAmountDiscount, totalConsumeAmount);
     }
 
+    /**
+     * 获取较小值，并且满足大于0的条件
+     * @param num1
+     * @param num2
+     * @return
+     */
+    private BigDecimal getMinWithPositiveConstraint(BigDecimal num1, BigDecimal num2) {
+        BigDecimal valid1 = num1.compareTo(BigDecimal.ZERO) > 0 ? num1 : null;
+        BigDecimal valid2 = num2.compareTo(BigDecimal.ZERO) > 0 ? num2 : null;
+
+        if (valid1 == null && valid2 == null) {
+            throw new IllegalArgumentException("两个值均不满足大于0的条件");
+        }
+
+        if (valid1 == null) return valid2;
+        if (valid2 == null) return valid1;
+
+        return valid1.compareTo(valid2) < 0 ? valid1 : valid2;
+    }
+
     /**
      * 计算余额支付下发金额
      * xixiao在用