new feat: gateway dipakai bersama dengan send-wa-kwitansi

including:
    - remove batch_size di config-gw-wa.json
    - merge function, bedakan dengan message_type

README.md

@@ -1,39 +1,62 @@
-Sample config file 
+# WhatsApp Gateway Service
+A lightweight service for sending WhatsApp messages with PDF attachments through Qontak API. Supports multiple message types and provides automatic retries for failed messages.
+
+## Configuration
+Create a `config-gw-wa.json` file in the root directory:
 ```json
 {
   "base_url": "https://cpone.aplikasi.web.id/one-api/",
-  // Setiap 2 menit dari jam 6 sampai 20
   "schedule": [
-    "*/2 6-20 * * *"
+    "*/2 6-20 * * *"  // Runs every 2 minutes from 6 AM to 8 PM
   ],
-  "delay": 5,
-  "row_per_batch": 50,
-  "startDate": "2023-08-01", //yyyy-mm-dd tanggal data dicari dimulai
-  "endDate": "2025-12-30", //yyyy-mm-dd tanggal data dicari berakhir
+  "startDate": "2023-08-01",  // Filter T_OrderHeaderDate from this date (YYYY-MM-DD)
+  "endDate": "2025-12-30"     // Filter T_OrderHeaderDate until this date (YYYY-MM-DD)
 }
 ```
 
-Install Dependencies
+## Supported Message Types
+* MCU Result: Medical checkup results with PDF attachment
+* Payment Receipt: Payment receipts with PDF attachment
+
+## Installation
 ```bash
+# Install dependencies
 npm install
+
+# Format code
+npm run format
 ```
 
-Build the source
+## Build & Run
 ```bash
+# Build TypeScript source
 npm run build
-```
 
-Compile
-```bash
-npm run compile 
-```
+# Compile to executable
+npm run compile
 
-Run
-```bash
+# Run the application
 npm run start
+
+# Or build, compile and start in one command
+npm run bcs
 ```
 
-Run Script
+## Run Compiled File
+```sh
+# Dijalankan di lokasi yang sama dengan `config-gw-wa.json`
+node ./dist/gw-wa.js
 ```
-node .\dist\gw-wa.js
-```
+
+## Development Notes
+The gateway checks for outbox items with status:
+
+* N: New messages
+* E: Error messages (with retry logic, max 5 attempts)
+* R: Rejected messages
+
+Each message type uses its own API endpoints for: 
+* listing, 
+* uploading files, 
+* sending messages, 
+* then updating status.