first commit

backend/src/utils/logger.ts

@@ -0,0 +1,26 @@
+import winston from 'winston';
+
+const logFormat = winston.format.combine(
+  winston.format.timestamp(),
+  winston.format.errors({ stack: true }),
+  winston.format.json()
+);
+
+export const logger = winston.createLogger({
+  level: process.env.NODE_ENV === 'production' ? 'info' : 'debug',
+  format: logFormat,
+  defaultMeta: { service: 'pandora-backend' },
+  transports: [
+    new winston.transports.File({ filename: 'logs/error.log', level: 'error' }),
+    new winston.transports.File({ filename: 'logs/combined.log' }),
+  ],
+});
+
+if (process.env.NODE_ENV !== 'production') {
+  logger.add(new winston.transports.Console({
+    format: winston.format.combine(
+      winston.format.colorize(),
+      winston.format.simple()
+    )
+  }));
+}