'use strict';

const winston = require('winston');
const fs = require('fs');
const path = require('path');
const moment = require('moment');

module.exports = function (config) {
    const defaultConfig = require('../../config').logger;
    config = config || defaultConfig;
    config.level = config.level || 'error';
    config.filename = config.filename || path.join(process.cwd(), "log", "runtime.log");
    let dir = path.dirname(config.filename);
    let logger = {};
    try {
        if (!fs.existsSync(dir)) {
            fs.mkdirSync(dir);
        }
        logger = new (winston.Logger)({
            level: config.level,
            transports: [
                new (winston.transports.Console)({
                    colorize: 'all',
                    timestamp: () => moment().format('YYYY-MM-DD HH:mm:ss.SSS')
                }),
                new (winston.transports.File)(config)
            ],
            exitOnError: false
        });
    } catch (err) {
        console.log(err);
        logger = new (winston.Logger)({
            level: config.level,
            transports: [
                new (winston.transports.Console)({
                    colorize: 'all',
                    timestamp: () => moment().format('YYYY-MM-DD HH:mm:ss.SSS')
                })
            ],
            exitOnError: false
        });
    }
    logger.log('debug', '[LOGGER]', 'Init.');
    process.logger = logger;
    return logger;
};