fix(issuance): 校验申请金额不超过建议补充额

src/main/java/com/yau/digitalrmb/issuance/application/service/CommercialBankIssuanceApplicationService.java

@@ -91,6 +91,7 @@ public class CommercialBankIssuanceApplicationService {
     @Transactional
     public IssuanceRequestView create(CreateIssuanceRequestCommand command, IssuanceAuditActor auditActor) {
         try {
+            requireAmountWithinSuggestedSupplement(command.getTotalAmount());
             UUID id = UUID.randomUUID();
             IssuanceRequest request = IssuanceRequest.create(new IssuanceApplicationId(id), requestNo(id),
                     command.getBankCode(), command.getOrganizationId(), command.getTotalAmount(), command.getCurrency(),
@@ -110,6 +111,7 @@ public class CommercialBankIssuanceApplicationService {
     public IssuanceRequestView update(UUID id, UpdateIssuanceRequestCommand command, IssuanceAuditActor auditActor) {
         try {
             IssuanceRequest request = requireOwnedRequestForUpdate(id, auditActor);
+            requireAmountWithinSuggestedSupplement(command.getTotalAmount());
             request.updateDraft(command.getTotalAmount(), command.getCurrency(), command.getDenominations());
             repository.save(request, auditActor(auditActor));
             return IssuanceRequestView.from(request);
@@ -237,6 +239,19 @@ public class CommercialBankIssuanceApplicationService {
                 inventory.getWarningThreshold(), inventory.getSuggestedSupplementAmount());
     }
 
+    private void requireAmountWithinSuggestedSupplement(BigDecimal requestedAmount) {
+        if (requestedAmount == null) {
+            throw new BusinessException(ErrorCode.VALIDATION_ERROR, "申请发行金额不能为空");
+        }
+        IssuanceBankInventory inventory = repository.findBuiltInInventory().orElseThrow(() ->
+                new BusinessException(ErrorCode.RESOURCE_NOT_FOUND, "发行库存配置不存在"));
+        if (requestedAmount.compareTo(inventory.getSuggestedSupplementAmount()) > 0) {
+            throw new BusinessException(ErrorCode.VALIDATION_ERROR,
+                    "申请发行金额不得超过建议补充金额 "
+                            + inventory.getSuggestedSupplementAmount().setScale(2).toPlainString() + " 元");
+        }
+    }
+
     private IssuanceRequest requireRequest(UUID id) {
         if (id == null) {
             throw new BusinessException(ErrorCode.VALIDATION_ERROR, "发行申请标识不能为空");

src/test/java/com/yau/digitalrmb/issuance/application/service/CommercialBankIssuanceApplicationServiceTest.java

@@ -135,9 +135,33 @@ class CommercialBankIssuanceApplicationServiceTest {
                 .isEqualTo(ErrorCode.UNAUTHORIZED);
     }
 
+    @Test
+    void acceptsAmountBelowSuggestedSupplementWhenDenominationsMatch() {
+        IssuanceRequestView created = service.create(createCommand(new BigDecimal("40000.00"), 300), "tzs001");
+
+        assertThat(created.getTotalAmount()).isEqualByComparingTo("40000.00");
+    }
+
+    @Test
+    void rejectsAmountAboveSuggestedSupplement() {
+        assertThatThrownBy(() -> service.create(
+                createCommand(new BigDecimal("50100.00"), 401), "tzs001"))
+                .isInstanceOf(BusinessException.class)
+                .satisfies(exception -> {
+                    BusinessException businessException = (BusinessException) exception;
+                    assertThat(businessException.getErrorCode()).isEqualTo(ErrorCode.VALIDATION_ERROR);
+                    assertThat(businessException.getMessage())
+                            .isEqualTo("申请发行金额不得超过建议补充金额 50000.00 元");
+                });
+    }
+
     private CreateIssuanceRequestCommand createCommand() {
-        return new CreateIssuanceRequestCommand("BKCHCNBJ00001", "ORG_3A4B5C6D7E8F", new BigDecimal("50000.00"),
+        return createCommand(new BigDecimal("50000.00"), 400);
-                "DC", Arrays.asList(new DenominationItem(100, 400), new DenominationItem(50, 100),
+    }
+
+    private CreateIssuanceRequestCommand createCommand(BigDecimal totalAmount, int hundredQuantity) {
+        return new CreateIssuanceRequestCommand("BKCHCNBJ00001", "ORG_3A4B5C6D7E8F", totalAmount,
+                "DC", Arrays.asList(new DenominationItem(100, hundredQuantity), new DenominationItem(50, 100),
                 new DenominationItem(20, 200), new DenominationItem(10, 50), new DenominationItem(5, 80),
                 new DenominationItem(1, 100), new DenominationItem(new BigDecimal("0.5"), 0),
                 new DenominationItem(new BigDecimal("0.2"), 0), new DenominationItem(new BigDecimal("0.1"), 0),
@@ -159,7 +183,8 @@ class CommercialBankIssuanceApplicationServiceTest {
 
         @Override
         public Optional<IssuanceBankInventory> findBuiltInInventory() {
-            return Optional.empty();
+            return Optional.of(new IssuanceBankInventory("BKCHCNBJ00001", new BigDecimal("49960000.00"),
+                    new BigDecimal("50000000.00"), new BigDecimal("50000.00")));
         }
     }