inital

backend/src/utils/logger.ts

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+import winston from 'winston';
+import path from 'path';
+
+const logDir = path.join(__dirname, '../../logs');
+
+// 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, ...meta }) => {
+    let metaString = '';
+    if (Object.keys(meta).length > 0) {
+      metaString = JSON.stringify(meta, null, 2);
+    }
+    return `${timestamp} [${level}]: ${message} ${metaString}`;
+  })
+);
+
+// Create the logger
+const logger = winston.createLogger({
+  level: process.env.LOG_LEVEL || 'info',
+  format: logFormat,
+  defaultMeta: { service: 'feuerwehr-dashboard-api' },
+  transports: [
+    // Write all logs with importance level of 'error' or less to error.log
+    new winston.transports.File({
+      filename: path.join(logDir, 'error.log'),
+      level: 'error',
+      maxsize: 5242880, // 5MB
+      maxFiles: 5,
+    }),
+    // Write all logs to combined.log
+    new winston.transports.File({
+      filename: path.join(logDir, 'combined.log'),
+      maxsize: 5242880, // 5MB
+      maxFiles: 5,
+    }),
+  ],
+});
+
+// If not in production, log to the console as well
+if (process.env.NODE_ENV !== 'production') {
+  logger.add(
+    new winston.transports.Console({
+      format: consoleFormat,
+    })
+  );
+}
+
+export default logger;