import numpy as np
import zmq
import threading
import json
from SunnyLinker import SunnyLinker64

class zmqServer(threading.Thread):
    def __init__(self, host='0.0.0.0', port=8099):
        threading.Thread.__init__(self)
        self.host = host
        self.port = port
        self.running = False
        self.get_Impedance = False  # 是否返回阻抗值
        self.open_Impedance = None  # 是否开启阻抗检测功能
        self.StartDecode = False  # false 停止解码，true=开始解码
        self.StartTrain = False  # False未进入训练状态，True处于训练状态
        self.state_mode = None  # 'train'为训练状态，’rest'为休息状态,'test'为测试状态
        self.currentLabel = -1  # 接收刺激端消息，了解刺激端当前的训练标签
        self.IsExitApp = False  # 当socket收到2的时候，就置为True，代表遥退出系统了。
        self.getReport = False  # 获取训练报告内容
        self.mat_generate = False # 保存mat文件，True开始，False暂停
        self.reset_mat_buffer = False # 重置缓冲区标志，True表示下次开始采集需要清空旧数据
        self.subject_id = None #受试者ID
        self.session_id = None #Session ID
        self.save_win = 0 #保存数据时长

        self.daemon = True
        # 创建 ZeroMQ 上下文
        self.context = zmq.Context()
        # 创建 REP 套接字（响应端）
        self.socket = self.context.socket(zmq.ROUTER)
        self.socket.bind(f"tcp://{self.host}:{self.port}")  # 绑定到端口 8099
        self.targetFreqs = []
        self.changeTarget = False  # 更换目标频率
        self.sunnyLinker = SunnyLinker64(None, None, None, None,None) #单例模式类，已在Decoder实例化
        self.labels = [0x01, 0x02,0x03]

        self.decoder_switch = False #更换解码器
        self.decoder_class = None #解码器类别 'ssvep','ssmvep','mi'
    def run(self):
        self.running = True
        print(f"Server is running on {self.host}:{self.port}")
        try:
            while self.running:
                # 等待客户端请求
                _,_,message = self.socket.recv_multipart()
                message = json.loads(message.decode('utf-8'))
                print(f"Received request: {message}")
                # 处理请求
                method = message.get("method")
                params = message.get("params")
                if method == "sync":
                    self.state_mode = 'sync'
                if method == "targetFreqs":
                    if not isinstance(params,list):
                        print('targetFreqs must be a list')
                        continue
                    if params != self.targetFreqs:
                        self.targetFreqs = params
                        self.changeTarget = True
                if method == "decoderClass":
                    if not isinstance(params,str):
                        print('decoderClass must be a str')
                        continue
                    # if params != self.decoder_class:
                    self.decoder_class = params
                    self.decoder_switch = True
                if method == "getReport":
                    self.getReport = True
                if method == "train":#训练状态
                    self.state_mode = 'train'
                    self.StartTrain = True
                    self.currentLabel = params  # 当前刺激端的训练标签
                    self.sunnyLinker.push_trigger(self.labels[self.currentLabel])
                elif method == "predict":#预测状态
                    self.state_mode = 'predict'
                    if params == 1: #开始解码
                        self.StartDecode = True
                        self.sunnyLinker.push_trigger(0x63)
                    elif params == 2: #停止解码
                        self.IsExitApp = True
                        self.running = False
                elif method == "rest": #休息状态
                    self.state_mode = 'rest'
                elif method == "impedance":
                    if params == 1:
                        self.open_Impedance = True  # 开启阻抗
                        self.get_Impedance = True  # 返回阻抗
                    elif params == 2:
                        self.open_Impedance = False  # 关闭阻抗
                        self.get_Impedance = False  # 停止返回阻抗
                elif method == "matGenerate":
                    self.subject_id = str(params['subject_id'])
                    self.session_id = str(params['session_id'])
                    self.save_win = int(params['time'])
                    self.mat_generate = True
                    self.reset_mat_buffer = True  # 每次发送 matGenerate 都重置缓冲区
                elif method == "stop":  # 停止
                    self.mat_generate = False


        except Exception as e:
            print(f"An socket error occurred: {e}")
        finally:
            self.running = False
            # 关闭套接字和上下文
            self.socket.close()
            self.context.term()
            print("Server socket and context closed.")
    def stop(self):
        """显式关闭服务器"""
        self.running = False
        self.socket.close()
        self.context.term()
        print("Server closed explicitly.")

if __name__ == '__main__':
    server = zmqServer()
    server.start()