Add validation for credit and debit amounts in transactions

Introduced checks to ensure credit and debit amounts are present and greater than zero in transaction-related methods. Returns appropriate error responses if validation fails, improving input validation and error handling.

aconnect/src/main/java/com/mfsys/aconnect/client/service/TransactionService.java

@@ -59,6 +59,18 @@ public class TransactionService {
         Double creditAmount = accountGLTransactionRequest.getCreditGl().getSgtGntramtfc();
         Double debitAmount = accountGLTransactionRequest.getDebitAcc().getSgtGntramtfc();
 
+        if (creditAmount == null || debitAmount == null) {
+            return ResponseEntity
+                    .badRequest()
+                    .body("Credit and Debit amounts are required");
+        }
+
+        if (creditAmount <= 0 || debitAmount <= 0) {
+            return ResponseEntity
+                    .badRequest()
+                    .body("Credit and Debit amounts must be greater than 0");
+        }
+
         if (!creditAmount.equals(debitAmount)) {
             return ResponseEntity
                     .badRequest()
@@ -95,11 +107,24 @@ public class TransactionService {
         Double creditAmount = gLtoGLRequest.getCreditGl().getSgtGntramtfc();
         Double debitAmount = gLtoGLRequest.getDebitGl().getSgtGntramtfc();
 
+        if (creditAmount == null || debitAmount == null) {
+            return ResponseEntity
+                    .badRequest()
+                    .body("Credit and Debit amounts are required");
+        }
+
+        if (creditAmount <= 0 || debitAmount <= 0) {
+            return ResponseEntity
+                    .badRequest()
+                    .body("Credit and Debit amounts must be greater than 0");
+        }
+
         if (!creditAmount.equals(debitAmount)) {
             return ResponseEntity
                     .badRequest()
                     .body("Credit and Debit amounts must be equal");
         }
+
         String porOrgacode  = gLtoGLRequest.getPorOrgacode();
         String url = generalledgerURI + "/generalledger/" + "/organizations/" + porOrgacode + "/transactions" + ACONNECT +"/gltogls";
         HttpHeaders headers = new HttpHeaders();
@@ -129,6 +154,19 @@ public class TransactionService {
         BigDecimal creditAmount = accountToAccountDTO.getCreditAcc().getSgtGntramtfc();
         BigDecimal debitAmount = accountToAccountDTO.getDebitAcc().getSgtGntramtfc();
 
+        if (creditAmount == null || debitAmount == null) {
+            return ResponseEntity
+                    .badRequest()
+                    .body("Credit and Debit amounts are required");
+        }
+
+        if (creditAmount.compareTo(BigDecimal.ZERO) <= 0 ||
+                debitAmount.compareTo(BigDecimal.ZERO) <= 0) {
+            return ResponseEntity
+                    .badRequest()
+                    .body("Credit and Debit amounts must be greater than 0");
+        }
+
         if (!creditAmount.equals(debitAmount)) {
             return ResponseEntity
                     .badRequest()
@@ -171,6 +209,13 @@ public class TransactionService {
                     .body("Credit and Debit amounts must be equal");
         }
 
+        if (creditAmount.compareTo(BigDecimal.ZERO) <= 0 ||
+                debitAmount.compareTo(BigDecimal.ZERO) <= 0) {
+            return ResponseEntity
+                    .badRequest()
+                    .body("Credit and Debit amounts must be greater than 0");
+        }
+
         String porOrgacode  = glToAccountDTO.getPorOrgacode();
         String url = depositURI + "/deposit" + "/organizations/" + porOrgacode +  "/transactions" + ACONNECT + "/gl-to-account";