feat: Modify logger to log to file that supports fail2ban (#284)

server/utils/logger.js

@@ -0,0 +1,42 @@
+const winston = require('winston');
+
+/**
+ * The default timestamp used by the logger.
+ * Format example: "2022-08-18 6:30:02"
+ */
+const defaultLogTimestampFormat = 'YYYY-MM-DD HH:mm:ss';
+
+const logfile = `${process.cwd()}/logs/planka.log`;
+
+/**
+ * Log level for both console and file log sinks.
+ *
+ * Refer {@link https://github.com/winstonjs/winston#logging here}
+ * for more information on Winston log levels.
+ */
+const logLevel = process.env.NODE_ENV === 'production' ? 'info' : 'debug';
+
+const logFormat = winston.format.combine(
+  winston.format.uncolorize(),
+  winston.format.timestamp({ format: defaultLogTimestampFormat }),
+  winston.format.printf((log) => `${log.timestamp} [${log.level[0].toUpperCase()}] ${log.message}`),
+);
+
+// eslint-disable-next-line new-cap
+const customLogger = new winston.createLogger({
+  transports: [
+    new winston.transports.File({
+      level: logLevel,
+      format: logFormat,
+      filename: logfile,
+    }),
+    new winston.transports.Console({
+      level: logLevel,
+      format: logFormat,
+    }),
+  ],
+});
+
+module.exports = {
+  customLogger,
+};