add changes

config/logger.js

@@ -0,0 +1,148 @@
+const winston = require('winston');
+const DailyRotateFile = require('winston-daily-rotate-file');
+const path = require('path');
+
+// Define log format
+const logFormat = winston.format.combine(
+  winston.format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
+  winston.format.errors({ stack: true }),
+  winston.format.splat(),
+  winston.format.json()
+);
+
+// Console format for development
+const consoleFormat = winston.format.combine(
+  winston.format.colorize(),
+  winston.format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
+  winston.format.printf(({ timestamp, level, message, stack }) => {
+    return stack
+      ? `${timestamp} [${level}]: ${message}\n${stack}`
+      : `${timestamp} [${level}]: ${message}`;
+  })
+);
+
+// Create logs directory if it doesn't exist
+const fs = require('fs');
+const logsDir = path.join(__dirname, '../logs');
+if (!fs.existsSync(logsDir)) {
+  fs.mkdirSync(logsDir);
+}
+
+// Daily rotate file transport for error logs
+const errorRotateTransport = new DailyRotateFile({
+  filename: path.join(logsDir, 'error-%DATE%.log'),
+  datePattern: 'YYYY-MM-DD',
+  level: 'error',
+  maxSize: '20m',
+  maxFiles: '14d',
+  format: logFormat
+});
+
+// Daily rotate file transport for combined logs
+const combinedRotateTransport = new DailyRotateFile({
+  filename: path.join(logsDir, 'combined-%DATE%.log'),
+  datePattern: 'YYYY-MM-DD',
+  maxSize: '20m',
+  maxFiles: '30d',
+  format: logFormat
+});
+
+// Daily rotate file transport for HTTP logs
+const httpRotateTransport = new DailyRotateFile({
+  filename: path.join(logsDir, 'http-%DATE%.log'),
+  datePattern: 'YYYY-MM-DD',
+  maxSize: '20m',
+  maxFiles: '7d',
+  format: logFormat
+});
+
+// Create the Winston logger
+const logger = winston.createLogger({
+  level: process.env.LOG_LEVEL || 'info',
+  format: logFormat,
+  defaultMeta: { service: 'interview-quiz-api' },
+  transports: [
+    errorRotateTransport,
+    combinedRotateTransport
+  ],
+  exceptionHandlers: [
+    new winston.transports.File({ 
+      filename: path.join(logsDir, 'exceptions.log') 
+    })
+  ],
+  rejectionHandlers: [
+    new winston.transports.File({ 
+      filename: path.join(logsDir, 'rejections.log') 
+    })
+  ]
+});
+
+// Add console transport in development
+if (process.env.NODE_ENV !== 'production') {
+  logger.add(new winston.transports.Console({
+    format: consoleFormat
+  }));
+}
+
+// HTTP logger for request logging
+const httpLogger = winston.createLogger({
+  level: 'http',
+  format: logFormat,
+  defaultMeta: { service: 'interview-quiz-api' },
+  transports: [httpRotateTransport]
+});
+
+// Stream for Morgan middleware
+logger.stream = {
+  write: (message) => {
+    httpLogger.http(message.trim());
+  }
+};
+
+// Helper functions for structured logging
+logger.logRequest = (req, message) => {
+  logger.info(message, {
+    method: req.method,
+    url: req.originalUrl,
+    ip: req.ip,
+    userId: req.user?.id,
+    userAgent: req.get('user-agent')
+  });
+};
+
+logger.logError = (error, req = null) => {
+  const errorLog = {
+    message: error.message,
+    stack: error.stack,
+    statusCode: error.statusCode || 500
+  };
+
+  if (req) {
+    errorLog.method = req.method;
+    errorLog.url = req.originalUrl;
+    errorLog.ip = req.ip;
+    errorLog.userId = req.user?.id;
+    errorLog.body = req.body;
+  }
+
+  logger.error('Application Error', errorLog);
+};
+
+logger.logDatabaseQuery = (query, duration) => {
+  logger.debug('Database Query', {
+    query,
+    duration: `${duration}ms`
+  });
+};
+
+logger.logSecurityEvent = (event, req) => {
+  logger.warn('Security Event', {
+    event,
+    method: req.method,
+    url: req.originalUrl,
+    ip: req.ip,
+    userAgent: req.get('user-agent')
+  });
+};
+
+module.exports = logger;