@wiz-code/async-fsm/src/logger.js

Finite StateMachine JavaScript Library

'use strict';

var _ = require('underscore');

var logger = {
    config: {
        logLevel: 'DEBUG',
        debuggable: true,
    },

    logLevelData: [
        'DEBUG',
        'INFO',
        'WARN',
        'ERROR',
    ],

    enable: function () {
        if (!this.config.debuggable) {
            this.config.debuggable = true;
        }
    },

    disable: function () {
        if (this.config.debuggable) {
            this.config.debuggable = false;
        }
    },

    setLogLevel: function (level) {
        level = level.toUpperCase();
        if (_.indexOf(this.logLevelData, level) !== -1) {
            this.config.logLevel = level;
        }
    },

    debug: function (message) {
        if (this.config.debuggable && _.indexOf(this.logLevelData, this.config.logLevel) <= 0) {
            console.log('DEBUG: ', message);
        }
    },

    info: function (message) {
        if (this.config.debuggable && _.indexOf(this.logLevelData, this.config.logLevel) <= 1) {
            console.log('INFO: ', message);
        }
    },

    warn: function (message) {
        if (this.config.debuggable && _.indexOf(this.logLevelData, this.config.logLevel) <= 2) {
            console.log('WARN: ', message);
        }
    },

    error: function (message) {
        if (this.config.debuggable && _.indexOf(this.logLevelData, this.config.logLevel) <= 3) {
            console.error('ERROR: ', message);
            throw new Error('ERROR: ' + message);
        }
    },
};

module.exports = logger;