webapi-eca/js-coffee/config.js

// Generated by CoffeeScript 1.6.3
/*

Configuration
=============
> Loads the configuration file and acts as an interface to it.
*/


(function() {
  var exports, fetchProp, fs, loadConfigFile, path,
    _this = this;

  fs = require('fs');

  path = require('path');

  /*
  Module call
  -----------
  
  Calling the module as a function will act as a constructor and load the config file.
  It is possible to hand an args object with the properties nolog (true if no outputs shall
  be generated) and configPath for a custom configuration file path.
  
  @param {Object} args
  */


  exports = module.exports = function(args) {
    args = args != null ? args : {};
    if (args.nolog) {
      _this.nolog = true;
    }
    if (args.configPath) {
      loadConfigFile(args.configPath);
    } else {
      loadConfigFile(path.join('config', 'config.json'));
    }
    return module.exports;
  };

  /*
  Tries to load a configuration file from the path relative to this module's parent folder. 
  Reads the config file synchronously from the file system and try to parse it.
  
  @private loadConfigFile
  @param {String} configPath
  */


  loadConfigFile = function(configPath) {
    var confProperties, e, isReady, prop, _i, _len;
    _this.config = null;
    confProperties = ['log', 'http-port', 'db-port'];
    try {
      _this.config = JSON.parse(fs.readFileSync(path.resolve(__dirname, '..', configPath)));
      isReady = true;
      for (_i = 0, _len = confProperties.length; _i < _len; _i++) {
        prop = confProperties[_i];
        if (!_this.config[prop]) {
          isReady = false;
        }
      }
      if (!isReady && !_this.nolog) {
        return console.error("Missing property in config file, requires: \n- " + (confProperties.join("\n -")));
      }
    } catch (_error) {
      e = _error;
      if (!_this.nolog) {
        return console.error("Failed loading config file: " + e.message);
      }
    }
  };

  /*
  Fetch a property from the configuration
  
  @private fetchProp( *prop* )
  @param {String} prop
  */


  fetchProp = function(prop) {
    var _ref;
    return (_ref = _this.config) != null ? _ref[prop] : void 0;
  };

  /*
  ***Returns*** true if the config file is ready, else false
  
  @public isReady()
  */


  exports.isReady = function() {
    return _this.config != null;
  };

  /*
  ***Returns*** the HTTP port
  
  @public getHttpPort()
  */


  exports.getHttpPort = function() {
    return fetchProp('http-port');
  };

  /*
  ***Returns*** the DB port*
  
  @public getDBPort()
  */


  exports.getDbPort = function() {
    return fetchProp('db-port');
  };

  /*
  ***Returns*** the log conf object
  
  @public getLogConf()
  */


  exports.getLogConf = function() {
    return fetchProp('log');
  };

  /*
  ***Returns*** the crypto key
  
  @public getCryptoKey()
  */


  exports.getCryptoKey = function() {
    return fetchProp('crypto-key');
  };

}).call(this);