A simple NSUserDefaults extension to input default values from Settings Bundle

NSUserDefaultsExtension

//
//  NSUserDefaultsExtension.swift
//  Settings
//
//  Created by Rodolfo Antonici on 18/08/16.
//  Copyright © 2016 Rodolfo Antonici. All rights reserved.
//

import Foundation

extension NSUserDefaults {
    func registerDefaultsFromSettingsBundle() {
        guard let settingsBundle = NSBundle.mainBundle().pathForResource("Settings", ofType: "bundle") else {
            print("Couldn't find Settings.bundle")
            return
        }
        
        if let settings = NSDictionary(contentsOfFile: settingsBundle + "/Root.plist"),
        let preferences = settings["PreferenceSpecifiers"] as? [[String : AnyObject]] {
            
            var defaultsToRegister = [String : AnyObject]()
            
            for preferenceSpecification in preferences {

                if let key = preferenceSpecification["Key"] as? String where Array(preferenceSpecification.keys).contains("DefaultValue"){
                    print("\(key) = \(preferenceSpecification["DefaultValue"])")
                    defaultsToRegister[key] = preferenceSpecification["DefaultValue"]
                    
                }
                
            }
            
            self.registerDefaults(defaultsToRegister)

            self.synchronize()
        }
        
    }
}