#Json-Settings Settings was something I threw together quickly for a project I'm working on. I was unable to quickly find anything that was file-based and allowed for auto flushing/reloading. The key word being quickly, there may be other projects out there much better than this one. But for now, this one works for my needs.

#Usage

var settings = require("json-settings");
var main = new settings("./settings.json");
main.set("oauth", "s02m569hrro2gxxt65w5f5qa2x07d6");
main.get("oauth"); //s02m569hrro2gxxt65w5f5qa2x07d6

#API ####Constructor(string, object) The constructor's signature is function(string, object). The string is the relative path to the json file. The object is an options object, which consists of the following defaults:

• skipReload (boolean; default: false)
  • Settings won't be reloaded from the constructor. You'll have to reload them manually.
• reloadSync (boolean; default: true)
  • Settings will call reloadSync from the constructor (instead of regular reload)
• cb (function)
  • The callback for the async reload call if reloadSync and skipReload are both false.

var settings = require("json-settings");
var main = new settings("./settings.json");

####reload(callback) Reload is asynchronous. It uses fs.readFile to grab the contents of the settings file and run JSON.parse on it. It then stores the parsed json in the raw_data object.

Reload's signature is function(callback) where the callback has the signature of function(error).

var settings = require("json-settings");
var main = new settings("./settings.json");
main.reload(function(err) {
  if (!err) {
    console.error(err);
  } else {
    console.log("Settings reloaded");
  }
});

####reloadSync() reloadSync is a synchronous version of reload. No errors are thrown, if there's an exception we reset the raw_data and swallow the exception.

var settings = require("json-settings");
var main = new settings("./settings.json");
main.reloadSync();
console.log("Reloaded!");

####save(callback) save will flush the json encoded raw_data object to the file.

var settings = require("json-settings");
var main = new settings("./settings.json");
main.save(function(err) {
  if (!err) {
    console.log("Settings saved!");
  } else {
    console.error(err);
  }
});

####saveSync() saveSync is the synchronous version of save

var settings = require("json-settings");
var main = new settings("./settings.json");
settings.saveSync();

####get(string, string) get's signature is get(setting_name, default_value)

get will return the value associated with the name provided.

var settings = require("json-settings");
var main = new settings("./settings.json");
console.log(main.get("oauth")); //assuming oauth exists and is set to 's02m569hrro2gxxt65w5f5qa2x07d6', 's02m569hrro2gxxt65w5f5qa2x07d6' will be printed to the console.

####set(string, mixed, object) set's signature is: set(setting_name, setting_value, options)

The options are as follows:

• saveSync (boolean; default: true)
  • Will save synchronously if true
• save (boolean; default: false)
  • If saveSync is false and this is true, we'll save asynchronously
• cb (function)
  • If saveSync is false and save is true, we'll set this function as the callback for save

####setAll(object, object) setAll's signature is: setAll(object_containing_keys_and_values, options

The object_containing_keys_and_values is something along the lines of

{
    oauth: "abcdefghijklmnop",
    secret: "qrstuvwxyz"
}

The options here are the same from set above

var settings = require("json-settings");
var main = new settings("./settings.json");
main.setAll({
    oauth: "abcdefghijklmnop",
    secret: "qrstuvwxyz"
});

This will set oauth to abcdefghijklmnop and secret to qrstuvwxyz in the flatfile and save according to your options.

####getAll(array) getAll's signature is: getAll(array_of_keys_to_get) or getAll(array_of_objects_to_get)

The object array looks like:

[{
    key: "setting_name",
    defaultValue: "default setting value"
}]

var settings = require("json-settings");
var main = new settings("./settings.json");
console.log(main.getAll(["oauth", "secret", "non_existant_key"])); //{oauth: "abcdefghijklmnop", secret: "qrstuvwxyz", non_existant_key: undefined}