extension UIDevice {
    
    //Device Code : iPhone7,2, iPhone6,1, ...
    public var deviceCode: String {
        var sysInfo: [CChar] = Array(count: sizeof(utsname), repeatedValue: 0)
        
        let code = sysInfo.withUnsafeMutableBufferPointer {
            (inout ptr: UnsafeMutableBufferPointer<CChar>) -> String in
            uname(UnsafeMutablePointer<utsname>(ptr.baseAddress))
            let machinePtr = advance(ptr.baseAddress, Int(_SYS_NAMELEN * 4))
            return String.fromCString(machinePtr)!
        }
        
        return code
    }

    // Device Family : iPhone,iPad, ...
    public var deviceFamily: String {
        
        return UIDevice.currentDevice().model
    }
    
    //Device Model : iPhone 6, iPhone 6 plus, iPad Air, ...
    public var deviceModel: String {
        
        var model : String
        let deviceCode = UIDevice().deviceCode
        switch deviceCode {
//
//        case "iPod1,1":                                 model = "iPod Touch 1G"
//        case "iPod2,1":                                 model = "iPod Touch 2G"
//        case "iPod3,1":                                 model = "iPod Touch 3G"
//        case "iPod4,1":                                 model = "iPod Touch 4G"
//        case "iPod5,1":                                 model = "iPod Touch 5G"
//            
//        case "iPhone1,1":                               model = "iPhone 2G"
//        case "iPhone1,2":                               model = "iPhone 3G"
//        case "iPhone2,1":                               model = "iPhone 3GS"
//        case "iPhone3,1", "iPhone3,2", "iPhone3,3":     model = "iPhone 4"
//        case "iPhone3,1", "iPhone3,2", "iPhone3,3":     model = "iPhone 4"
//        case "iPhone4,1":                               model = "iPhone 4S"
        case "iPhone5,1", "iPhone5,2":                  model = "iPHONE 5"
        case "iPhone5,3", "iPhone5,4":                  model = "iPHONE 5c"
        case "iPhone6,1", "iPhone6,2":                  model = "iPHONE 5s"
        case "iPhone7,2":                               model = "iPHONE 6"
        case "iPhone7,1":                               model = "iPHONE 6 PlUS"

//        case "iPad1,1":                                 model = "iPad 1"
//        case "iPad2,1", "iPad2,2", "iPad2,3", "iPad2,4":model = "iPad 2"
//        case "iPad3,1", "iPad3,2", "iPad3,3":           model = "iPad 3"
//        case "iPad3,4", "iPad3,5", "iPad3,6":           model = "iPad 4"
//        case "iPad4,1", "iPad4,2", "iPad4,3":           model = "iPad Air"
//        case "iPad5,1", "iPad5,3", "iPad5,4":           model = "iPad Air 2"
//        case "iPad2,5", "iPad2,6", "iPad2,7":           model = "iPad Mini"
//        case "iPad4,4", "iPad4,5", "iPad4,6":           model = "iPad Mini 2"
//        case "iPad4,7", "iPad4,8", "iPad4,9":           model = "iPad Mini 3"
            
        case "i386", "x86_64":                          model = "iPHONE 5s"
        default:                                        model = "iPHONE 5s"         }
        
        return model
    }
    
    
 

    //Device Jailbreaked or not
    public var deviceJailed: Bool {
        let path : NSString = "/Applications/Cydia.app"
        let fileExists : Bool = NSFileManager.defaultManager().fileExistsAtPath(path as String)
        return fileExists
    }
    
    //Device iOS Version : 8.1, 8.1.3, ...
    public var deviceIOSVersion: String {
        return UIDevice.currentDevice().systemVersion
    }

    //Device Screen Width and Height
    class public var deviceScreenWidth: CGFloat {
        let screenSize: CGRect = UIScreen.mainScreen().bounds
        let width = screenSize.width;
        return width
    }
    class public var deviceScreenHeight: CGFloat {
        let screenSize: CGRect = UIScreen.mainScreen().bounds
        let height = screenSize.height;
        return height
    }
    
    
    //Device Orientation String
    public var deviceOrientationString: String {

        var orientation : String
        
            switch UIDevice.currentDevice().orientation{
            case .Portrait:
                orientation="Portrait"
            case .PortraitUpsideDown:
                orientation="Portrait Upside Down"
            case .LandscapeLeft:
                orientation="Landscape Left"
            case .LandscapeRight:
                orientation="Landscape Right"
            case .FaceUp:
                orientation="Face Up"
            case .FaceDown:
                orientation="Face Down"
            default:
                orientation="Unknown"
            }

        return orientation
    }
    
    
    // is Device Landscape, is Portrait
    public var isDevicePortrait: Bool {
        return UIDevice.currentDevice().orientation.isPortrait
    }
    public var isDeviceLandscape: Bool {
        return UIDevice.currentDevice().orientation.isLandscape
    }
    
}