AppUserDefaults.swift

import Foundation
import SwiftyJSON

enum AppUserDefaults {
    
    enum Key : String {
        
        case Name
        case Age
    }
}

extension AppUserDefaults {
    
    static func value(forKey key: Key, file : String = #file, line : Int = #line, function : String = #function) -> JSON {
        
        guard let value = UserDefaults.standard.object(forKey: key.rawValue) else {
            
            fatalError("No Value Found in UserDefaults\nFile : \(file) \nLine Number : \(line) \nFunction : \(function)")
        }
        
        return JSON(value)
    }
    
    static func value<T>(forKey key: Key, fallBackValue : T, file : String = #file, line : Int = #line, function : String = #function) -> JSON {
        
        guard let value = UserDefaults.standard.object(forKey: key.rawValue) else {
            
            print("No Value Found in UserDefaults\nFile : \(file) \nFunction : \(function)")
            return JSON(fallBackValue)
        }
        
        return JSON(value)
    }
    
    static func save(value : Any, forKey key : Key) {
        
        UserDefaults.standard.set(value, forKey: key.rawValue)
        UserDefaults.standard.synchronize()
    }
    
    static func removeValue(forKey key : Key) {
        
        UserDefaults.standard.removeObject(forKey: key.rawValue)
        UserDefaults.standard.synchronize()
    }
    
    static func removeAllValues() {
        
        let appDomain = Bundle.main.bundleIdentifier!
        UserDefaults.standard.removePersistentDomain(forName: appDomain)
        UserDefaults.standard.synchronize()
        
    }
    
}
    
/* USAGE : 

AppUserDefaults.save(value: 32, forKey: .Age)
        
let age = AppUserDefaults.value(forKey: .Age).intValue
        
AppUserDefaults.save(value: "Chris", forKey: .Name)
let name = AppUserDefaults.value(forKey: .Age).stringValue

let name = AppUserDefaults.value(forKey: .Name, fallBackValue: "NO NAME")
*/