logger.js

'use: strict';
const winston = require('winston');
const {
  createLogger,
  format,
  transports
} = winston;
const DailyRotateFile = require('winston-daily-rotate-file');
const fs = require('fs');
const os = require('os');
const logNamePrefix = 'Echo-Speaks';
const dataFolder = os.homedir();

function initLogFolder() {
  // Create the log directory if it does not exist
  if (!fs.existsSync(dataFolder)) {
    fs.mkdirSync(dataFolder);
  }
  if (!fs.existsSync(dataFolder + '/logs')) {
    fs.mkdirSync(dataFolder + '/logs');
  }
}

winston.addColors({
  error: 'red',
  warn: 'orange',
  info: 'blue',
  verbose: 'green',
  debug: 'gray',
  silly: 'yellow'
});

let logger = createLogger({
  level: 'silly',
  levels: {
    error: 0,
    warn: 1,
    info: 2,
    verbose: 3,
    debug: 4,
    silly: 5
  },
  format: format.combine(
    format.timestamp({
      format: 'M-D-YYYY - h:mm:ssa'
    }),
    // format.colorize({
    //     all: true
    // }),
    winston.format.simple(),
    format.align(),
    format.prettyPrint(),
    format.printf(info => {
      return `${info.timestamp} ${info.level}: ${info.message}`;
    })
  ),
  transports: [
    new transports.Console(),
    new DailyRotateFile({
      filename: dataFolder + '/logs/' + logNamePrefix + '-%DATE%.log',
      maxsize: 5242880, // 5MB
      maxFiles: 5,
    })
  ],
  exitOnError: false
});

initLogFolder();
module.exports = logger;