Read system properties with types and defaults

Configuration belongs in system properties, not in code. Properties come back as strings, though, so this helper converts them safely.

var Config = Class.create();
Config.prototype = {
  initialize: function (prefix) {
    this.prefix = prefix ? prefix + '.' : '';
  },
  str: function (name, fallback) {
    var v = gs.getProperty(this.prefix + name, '');
    return v === '' ? fallback : v;
  },
  num: function (name, fallback) {
    var n = parseFloat(this.str(name, ''));
    return isNaN(n) ? fallback : n;
  },
  bool: function (name, fallback) {
    var v = this.str(name, '');
    return v === '' ? fallback : v === 'true';
  },
  list: function (name) {
    var v = this.str(name, '');
    return v
      ? v
          .split(',')
          .map(function (s) {
            return s.trim();
          })
          .filter(Boolean)
      : [];
  },
  type: 'Config',
};

// Usage
// var cfg = new Config('x_acme_vendor');
// var days = cfg.num('auto_close_days', 14);
// var approverGroup = cfg.str('approver_group', '');

How it works

• gs.getProperty(name, default) returns the default when the property doesn’t exist.
• A prefix (your app scope) keeps property names consistent and short in code.

Gotchas

• Properties are cached; changes apply quickly, but don’t write to them in high-volume code.
• Give each property a description and read/write roles so admins know what it controls.