Node Websocket and native JSON parsing in Swift for socket.io type sockets

parse-example.swift

// This should go in your main ViewController or GameViewController. Some sockets want it in AppDelegate.swift. Using Starscream Socket here.
func websocketDidReceiveMessage(socket: WebSocket, text: String) {
        //print("Received text: \(text)")]
        // decode data
        var data = text.data(using: .utf8)!
        // data is like {message: "hi", data: "[{"tagId": "long number here", ...},{"tagId": "long number here"}]"}
        if let parsedData = try? JSONSerialization.jsonObject(with: data) as! NSDictionary {
            // value of the "data" key is actually array
            let arrayed = parsedData["data"] as! NSArray
            //check that it's array
            print(arrayed[0])
            // because the next step is to map reduce. check that fist value. it should also be a dictionary like : {"tagId": "long number here", "date": "some date here", ...}
            let mapped = arrayed[0] as! NSDictionary
            print(mapped)
            let tagId = mapped["tagId"]
            print(tagId)
            // what comes back is an optional containing tagId's value, which in this case is a long number expressed as string.
        }
        
    }