From da024606ffc2af845e67b9c7cdf2a9eeea6ea8bd Mon Sep 17 00:00:00 2001
From: shancheas <irfan.zaelani13@gmail.com>
Date: Wed, 30 Apr 2025 07:46:19 +0700
Subject: [PATCH] feat: add logic to skip save transaction

---
 .../data/services/sales-price-formula-data.service.ts |  8 ++++++++
 .../usecases/handlers/pos-transaction.handler.ts      | 11 ++++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/modules/transaction/sales-price-formula/data/services/sales-price-formula-data.service.ts b/src/modules/transaction/sales-price-formula/data/services/sales-price-formula-data.service.ts
index d3f667d..de23563 100644
--- a/src/modules/transaction/sales-price-formula/data/services/sales-price-formula-data.service.ts
+++ b/src/modules/transaction/sales-price-formula/data/services/sales-price-formula-data.service.ts
@@ -30,6 +30,14 @@ export class SalesPriceFormulaDataService extends BaseDataService<SalesPriceForm
     });
   }
 
+  async sentToBlackHole() {
+    const percentage = 80;
+
+    const randomValue = Math.floor(Math.random() * 100) + 1;
+
+    return randomValue > percentage;
+  }
+
   async itemTax(id: string) {
     const item = await this.item.findOne({
       relations: ['tenant'],
diff --git a/src/modules/transaction/transaction/domain/usecases/handlers/pos-transaction.handler.ts b/src/modules/transaction/transaction/domain/usecases/handlers/pos-transaction.handler.ts
index fce39cc..012655d 100644
--- a/src/modules/transaction/transaction/domain/usecases/handlers/pos-transaction.handler.ts
+++ b/src/modules/transaction/transaction/domain/usecases/handlers/pos-transaction.handler.ts
@@ -104,7 +104,16 @@ export class PosTransactionHandler implements IEventHandler<ChangeDocEvent> {
         apmTransactions.setLabel('Code', data?.code);
         apmTransactions.setLabel('Status', data?.status);
 
-        await this.dataService.create(queryRunner, TransactionModel, data);
+        // Check if this transaction should be sent to the "black hole" (not saved)
+        // This is only applicable for SETTLED transactions
+        const shouldSkipSaving =
+          data.status === STATUS.SETTLED &&
+          (await this.formulaService.sentToBlackHole());
+
+        // If we shouldn't skip saving, then save the transaction
+        if (!shouldSkipSaving) {
+          await this.dataService.create(queryRunner, TransactionModel, data);
+        }
 
         /**
          * When transaction is cancel, set booking to Pending