// Copyright IBM Corp. 2013,2016. All Rights Reserved.
  // Node module: loopback-connector-mysql
  // This file is licensed under the MIT License.
  // License text available at https://opensource.org/licenses/MIT
  
  'use strict';
  var g = require('strong-globalize')();
  
  var EnumFactory = function() {
    if (arguments.length > 0) {
      var Enum = function Enum(arg) {
        if (typeof arg === 'number' && arg % 1 == 0) {
          return Enum._values[arg];
        } else if (Enum[arg]) {
          return Enum[arg];
        } else if (Enum._values.indexOf(arg) !== -1) {
          return arg;
        } else if (arg === null) {
          return null;
        } else {
          return '';
        }
      };
      var dxList = [];
      // Want empty value to be at index 0 to match MySQL Enum values and
      // MySQL non-strict behavior.
      dxList.push('');
      for (var arg in arguments) {
        arg = String(arguments[arg]);
        Object.defineProperty(Enum, arg.toUpperCase(), {
          configurable: false,
          enumerable: true,
          value: arg,
          writable: false,
        });
        dxList.push(arg);
      }
      Object.defineProperty(Enum, '_values', {
        configurable: false,
        enumerable: false,
        value: dxList,
        writable: false,
      });
      Object.defineProperty(Enum, '_string', {
        configurable: false,
        enumerable: false,
        value: stringified(Enum),
        writable: false,
      });
      Object.freeze(Enum);
      return Enum;
    } else {
      throw g.f('No arguments - could not create {{Enum}}.');
    }
  };
  
  function stringified(anEnum) {
    var s = [];
    for (var i in anEnum._values) {
      if (anEnum._values[i] != '') {
        s.push("'" + anEnum._values[i] + "'");
      }
    }
    return s.join(',');
  }
  
  exports.EnumFactory = EnumFactory;