Swift: get the Mac's "Do not disturb" state

getDoNotDisturbState.swift

if let uuid = getSystemUUID() {
    let filepath = ("~/Library/Preferences/ByHost/com.apple.notificationcenterui.\(uuid).plist" as NSString).stringByExpandingTildeInPath
    if let dict = NSDictionary(contentsOfFile: filepath), doNotDisturbState = dict["doNotDisturb"] as? Bool {
        print(doNotDisturbState)
    }
}