using System;
using UnityEngine;
using UnityEngine.UI;
using BestHTTP.WebSocket;

[Serializable]
class JCData {
    public string uuid;
    public int type; 
    public string func;
    public string[] args;
}

public class BluetoothClient : MonoBehaviour
{
    WebSocket ws;
    bool loaded = false;
    [SerializeField] string serverIP = "110.43.54.43";
    [SerializeField] Text text;
    public static System.Action<byte, byte[]> onDataReceived;
    static BluetoothClient ins;

    void Start()
    {
        ins = this;
        string uri = "ws://" + serverIP + ":9888/BLE";
        ws = new WebSocket(new Uri(uri));
        ws.OnOpen += OnOpen;
        ws.OnMessage += OnMessage;
        ws.Open();
    }

    void OnOpen(WebSocket webSocket)
    {
        ws.Send(PackData("loadTempEntity", new string[]{}, 0));
    }

    void OnMessage(WebSocket webSocket, string text)
    {
        JCData data = JsonUtility.FromJson<JCData>(text);
        if (data.func == "receiveData") 
        {
            string byteStr = data.args[1];
            string[] byteStrs = byteStr.Split(',');
            byte[] bytes = new byte[byteStrs.Length];
            for (int i = 0; i < bytes.Length; i++)
            {
                bytes[i] = Byte.Parse(byteStrs[i]);
            }
            Log("接收数据\n" + byteStr);
            if (onDataReceived != null)
            {
                onDataReceived(byte.Parse(data.args[0]), bytes);
            }
        }
        else if (data.func == "loadTempEntity") 
        {
            loaded = true;
        }
    }

    string PackData(string func, string[] args, int type) 
    {
        JCData data = new JCData();
        data.uuid = "";
        data.type = type;
        data.func = func;
        data.args = args;
        return JsonUtility.ToJson(data);
    }

    public static void UploadData(byte sign, byte[] bytes) 
    {
        if (ins && ins.loaded)
        {
            string data = String.Join(",", bytes);
            ins.ws.Send(ins.PackData("uploadData", new string[]{sign.ToString(), data}, 1));
            ins.Log("正在上传数据\n" + bytes);
        }
    }

    void Log(string text) {
        if (this.text != null)
        {
            this.text.text = text;
        }
    }
}