Add comprehensive logging infrastructure with configuration and middleware

- Implemented centralized logging utility using Winston with daily log rotation
- Added logging middleware for request and error tracking
- Extended .env.example with logging configuration options
- Updated app configuration to support flexible logging settings
- Replaced console.log with structured logging in main application entry point
- Created logging middleware to capture request details and response times

src/utils/logger.ts

@@ -0,0 +1,112 @@
+/**
+ * Logging Module
+ * 
+ * This module provides logging functionality with rotation support.
+ * It uses winston for logging and winston-daily-rotate-file for rotation.
+ * 
+ * @module logger
+ */
+
+import winston from 'winston';
+import 'winston-daily-rotate-file';
+import { APP_CONFIG } from '../config/app.config.js';
+
+/**
+ * Log levels configuration
+ * Defines the severity levels for logging
+ */
+const levels = {
+    error: 0,
+    warn: 1,
+    info: 2,
+    http: 3,
+    debug: 4,
+};
+
+/**
+ * Log level colors configuration
+ * Defines colors for different log levels
+ */
+const colors = {
+    error: 'red',
+    warn: 'yellow',
+    info: 'green',
+    http: 'magenta',
+    debug: 'white',
+};
+
+/**
+ * Add colors to winston
+ */
+winston.addColors(colors);
+
+/**
+ * Log format configuration
+ * Defines how log messages are formatted
+ */
+const format = winston.format.combine(
+    winston.format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss:ms' }),
+    winston.format.colorize({ all: true }),
+    winston.format.printf(
+        (info) => `${info.timestamp} ${info.level}: ${info.message}`,
+    ),
+);
+
+/**
+ * Transport for daily rotating file
+ * Configures how logs are rotated and stored
+ */
+const dailyRotateFileTransport = new winston.transports.DailyRotateFile({
+    filename: 'logs/%DATE%.log',
+    datePattern: 'YYYY-MM-DD',
+    zippedArchive: true,
+    maxSize: '20m',
+    maxFiles: '14d',
+    format: winston.format.combine(
+        winston.format.uncolorize(),
+        winston.format.timestamp(),
+        winston.format.json()
+    )
+});
+
+/**
+ * Transport for error logs
+ * Stores error logs in a separate file
+ */
+const errorFileTransport = new winston.transports.DailyRotateFile({
+    filename: 'logs/error-%DATE%.log',
+    datePattern: 'YYYY-MM-DD',
+    level: 'error',
+    zippedArchive: true,
+    maxSize: '20m',
+    maxFiles: '14d',
+    format: winston.format.combine(
+        winston.format.uncolorize(),
+        winston.format.timestamp(),
+        winston.format.json()
+    )
+});
+
+/**
+ * Create the logger instance
+ */
+const logger = winston.createLogger({
+    level: APP_CONFIG.NODE_ENV === 'development' ? 'debug' : 'info',
+    levels,
+    format,
+    transports: [
+        new winston.transports.Console({
+            format: winston.format.combine(
+                winston.format.colorize(),
+                winston.format.simple()
+            )
+        }),
+        dailyRotateFileTransport,
+        errorFileTransport
+    ],
+});
+
+/**
+ * Export the logger instance
+ */
+export { logger };