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:

{
  "base_url": "https://cpone.aplikasi.web.id/one-api/",
  "schedule": [
    "*/2 6-20 * * *"  // Runs every 2 minutes from 6 AM to 8 PM
  ],
  "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)
}

Supported Message Types

MCU Result: Medical checkup results with PDF attachment
Payment Receipt: Payment receipts with PDF attachment

Installation

# Install dependencies
npm install

# Format code
npm run format

Build & Run

# Build TypeScript source
npm run build

# Compile to executable
npm run compile

# Run the application
npm run start

# Or build, compile and start in one command
npm run bcs

Run Compiled File

# Dijalankan di lokasi yang sama dengan `config-gw-wa.json`
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.