struct Hardware {

    let machine: String

    init() {
        machine = Hardware.getSystemInformation("hw.machine")
    }

    static func getSystemInformation(_ name: String) -> String {
        var size: Int = 0
        sysctlbyname(name, nil, &size, nil, 0)
        var info = [CChar](repeating: 0, count: size)
        sysctlbyname(name, &info, &size, nil, 0)
        return String(cString: info)
    }

    var model: String {
        switch machine {

        // iPhone
        case "iPhone1,1":    return "iPhone"
        case "iPhone1,2":    return "iPhone 3G"
        case "iPhone2,1":    return "iPhone 3GS"
        case "iPhone3,1":    return "iPhone 4 (GSM)"
        case "iPhone3,3":    return "iPhone 4 (CDMA)"
        case "iPhone4,1":    return "iPhone 4S"
        case "iPhone5,1":    return "iPhone 5"
        case "iPhone5,2":    return "iPhone 5"
        case "iPhone5,3":    return "iPhone 5c"
        case "iPhone5,4":    return "iPhone 5c"
        case "iPhone6,1":    return "iPhone 5s"
        case "iPhone6,2":    return "iPhone 5s"
        case "iPhone7,1":    return "iPhone 6 Plus"
        case "iPhone7,2":    return "iPhone 6"
        case "iPhone8,1":    return "iPhone 6s"
        case "iPhone8,2":    return "iPhone 6s Plus"
        case "iPhone8,4":    return "iPhone SE"
        case "iPhone9,1":    return "iPhone 7"
        case "iPhone9,2":    return "iPhone 7 Plus"
        case "iPhone9,3":    return "iPhone 7"
        case "iPhone9,4":    return "iPhone 7 Plus"
        case "iPhone10,1":   return "iPhone 8"
        case "iPhone10,2":   return "iPhone 8 Plus"
        case "iPhone10,3":   return "iPhone X"
        case "iPhone10,4":   return "iPhone 8"
        case "iPhone10,5":   return "iPhone 8 Plus"
        case "iPhone10,6":   return "iPhone X"

        // iPod touch
        case "iPod1,1":      return "iPod touch"
        case "iPod2,1":      return "iPod touch (2nd gen)"
        case "iPod3,1":      return "iPod touch (3rd gen)"
        case "iPod4,1":      return "iPod touch (4th gen)"
        case "iPod5,1":      return "iPod touch (5th gen)"
        case "iPod7,1":      return "iPod touch (6th gen)"

        // iPad
        case "iPad1,1":      return "iPad"
        case "iPad2,1":      return "iPad 2 (Wi-Fi)"
        case "iPad2,2":      return "iPad 2 (GSM)"
        case "iPad2,3":      return "iPad 2 (CDMA)"
        case "iPad2,4":      return "iPad 2 (Wi-Fi, Rev)"
        case "iPad2,5":      return "iPad mini (Wi-Fi)"
        case "iPad2,6":      return "iPad mini (GSM)"
        case "iPad2,7":      return "iPad mini (CDMA)"
        case "iPad3,1":      return "iPad (3rd gen, Wi-Fi)"
        case "iPad3,2":      return "iPad (3rd gen, CDMA)"
        case "iPad3,3":      return "iPad (3rd gen, GSM)"
        case "iPad3,4":      return "iPad (4th gen, Wi-Fi)"
        case "iPad3,5":      return "iPad (4th gen, GSM)"
        case "iPad3,6":      return "iPad (4th gen, CDMA)"
        case "iPad4,1":      return "iPad Air (Wi-Fi)"
        case "iPad4,2":      return "iPad Air (Cellular)"
        case "iPad4,3":      return "iPad Air (Rev)"
        case "iPad4,4":      return "iPad mini 2 (Wi-Fi)"
        case "iPad4,5":      return "iPad mini 2 (Cellular)"
        case "iPad4,6":      return "iPad mini 2 (Rev)"
        case "iPad4,7":      return "iPad mini 3 (Wi-Fi)"
        case "iPad4,8":      return "iPad mini 3 (Cellular)"
        case "iPad4,9":      return "iPad mini 3 (Cellular)"
        case "iPad5,1":      return "iPad mini 4 (Wi-Fi)"
        case "iPad5,2":      return "iPad mini 4 (Cellular)"
        case "iPad5,3":      return "iPad Air 2 (Wi-Fi)"
        case "iPad5,4":      return "iPad Air 2 (Cellular)"
        case "iPad6,3":      return "iPad Pro (9.7-inch, Wi-Fi)"
        case "iPad6,4":      return "iPad Pro (9.7-inch, Cellular)"
        case "iPad6,7":      return "iPad Pro (12.9-inch, Wi-Fi)"
        case "iPad6,8":      return "iPad Pro (12.9-inch, Cellular)"
        case "iPad6,11":     return "iPad (5th gen, Wi-Fi)"
        case "iPad6,12":     return "iPad (5th gen, Cellular)"
        case "iPad7,1":      return "iPad Pro (12.9-inch, 2nd, Wi-Fi)"
        case "iPad7,2":      return "iPad Pro (12.9-inch, 2nd, Cellular)"
        case "iPad7,3":      return "iPad Pro (10.5-inch, Wi-Fi)"
        case "iPad7,4":      return "iPad Pro (10.5-inch, Cellular)"
        case "iPad7,5":      return "iPad (6th gen, Wi-Fi)"
        case "iPad7,6":      return "iPad (6th gen, Cellular)"

        // Simulator
        case "i386", "x86_64": return "Simulator"

        default: return "Unknown Hardware \(machine)"
        }
    }

}