OPEN-ISP v0.5 (pickle-lime) — rilis open-source perdana

Aplikasi billing & manajemen ISP (fiber optic) — PWA pelanggan, portal teknisi & kolektor,
admin panel lengkap, multi-vendor OLT, RADIUS, WhatsApp/Telegram, pembayaran QRIS.

Kredit & lisensi (ISC):
- Base kode & repo: alijayanet/billing-rtrw oleh Alijaya Net — terima kasih banyak
  atas base kode dan repo yang bermanfaat.
- Add-on: GoWA, LibreSpeed/OpenSpeedTest, Uptime Kuma, notification-forwarder.
- Dikembangkan menjadi OPEN-ISP oleh oxpoe — https://github.com/oxpoe/open-isp

config/logger.js

@@ -0,0 +1,68 @@
+// Modul logger untuk aplikasi
+const winston = require('winston');
+const path = require('path');
+const fs = require('fs');
+
+// Buat direktori logs jika belum ada
+const logsDir = path.join(process.cwd(), 'logs');
+if (!fs.existsSync(logsDir)) {
+    fs.mkdirSync(logsDir, { recursive: true });
+}
+
+// Format untuk log
+const logFormat = winston.format.printf(({ level, message, timestamp }) => {
+    return `${timestamp} ${level}: ${message}`;
+});
+
+// Konfigurasi logger
+const logger = winston.createLogger({
+    level: process.env.LOG_LEVEL || 'info',
+    exitOnError: false,  // Jangan exit saat uncaught exception (e.g. koneksi MikroTik gagal)
+    format: winston.format.combine(
+        winston.format.timestamp({
+            format: 'YYYY-MM-DD HH:mm:ss'
+        }),
+        logFormat
+    ),
+    transports: [
+        // Log ke file
+        new winston.transports.File({ 
+            filename: path.join(logsDir, 'error.log'), 
+            level: 'error' 
+        }),
+        new winston.transports.File({ 
+            filename: path.join(logsDir, 'combined.log') 
+        }),
+        // Log ke console
+        new winston.transports.Console({
+            format: winston.format.combine(
+                winston.format.colorize(),
+                winston.format.timestamp({
+                    format: 'YYYY-MM-DD HH:mm:ss'
+                }),
+                logFormat
+            )
+        })
+    ],
+    exceptionHandlers: [
+        new winston.transports.File({ 
+            filename: path.join(logsDir, 'exceptions.log') 
+        }),
+        new winston.transports.Console({
+            format: winston.format.combine(
+                winston.format.colorize(),
+                winston.format.timestamp({
+                    format: 'YYYY-MM-DD HH:mm:ss'
+                }),
+                logFormat
+            )
+        })
+    ],
+    rejectionHandlers: [
+        new winston.transports.File({
+            filename: path.join(logsDir, 'rejections.log')
+        })
+    ]
+});
+
+module.exports = { logger };