import json
import queue
import socket
import threading
import time


class TimeStatu:
    def __init__(self, statu=None, timeout=3):
        self.statu = statu
        self.time = time.time()
        self.timeout_ms = timeout

    def timeout(self):
        tm = time.time()
        return tm - self.time > self.timeout_ms


class McpuCommunicator:
    def __init__(self, mcpu_keys):
        self._mcpu_keys = mcpu_keys
        self._mcpu_iomsg = {}
        self._mcpu_communication_thread = {}
        self._mcpu_socket = {}
        self._mcpu_connect_status = {}
        self._mcpu_statu_lock = threading.Lock()
        self._reconnect_thread = threading.Thread(target=self.ReconnectThread)
        self._send_thread = threading.Thread(target=self.SendThread)
        self._is_close = False
        self._publish_msg_queue=queue.Queue()

    def McpuCommunicatorInit(self):
        if self._mcpu_keys == None:
            return
        for mouth, id, ip, port in self._mcpu_keys:
            key = mouth + ":mcpu_" + str(id)
            self._mcpu_socket[key] = {}
            self._mcpu_socket[key]["socket"] = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            self._mcpu_socket[key]["socket"].settimeout(1)
            self._mcpu_socket[key]["ip"] = ip
            self._mcpu_socket[key]["port"] = port
            self._mcpu_connect_status[key] = False
            self._mcpu_communication_thread[key] = threading.Thread(target=self.McpuCommunicationThread, args=(key,))
            self._mcpu_iomsg[key] = TimeStatu(None, 0.1)
            self._mcpu_communication_thread[key].start()
        self._reconnect_thread.start()
        self._send_thread.start()

    def publish(self,key,msg):
        self._publish_msg_queue.put([key,msg])
    def SendThread(self):
        while self._is_close is False:
            if self._publish_msg_queue.qsize() > 0:
                msg_bag = self._publish_msg_queue.get(False)
                if not msg_bag is None:
                    key, msg = msg_bag
                    try:
                        self._mcpu_socket[key]["socket"].sendall(msg)
                        print('\033[0;32m{}  send msg success:{}\033[m'.format(key, msg))
                    except Exception as e:
                        print('\033[0;31m{} send msg error:{}\033[m'.format(key, str(e)))
            time.sleep(0.001)

    def ReconnectThread(self):
        while self._is_close is False:
            for key, mcpu in self._mcpu_socket.items():
                if self._is_close is True:
                    break
                if self._mcpu_connect_status[key] == False:
                    try:
                        self._mcpu_socket[key]["socket"] = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                        self._mcpu_socket[key]["socket"].settimeout(1)
                        mcpu["socket"].connect((mcpu["ip"], mcpu["port"]))
                        print('-----------------------------------------')
                        print('\033[0;32m{}  client start connect to host:{}  port:{}\033[m'.format(key, mcpu["ip"],
                                                                                                    mcpu["port"]))
                        with self._mcpu_statu_lock:
                            self._mcpu_connect_status[key] = True
                    except ConnectionRefusedError:
                        print('\033[0;31msocket connect error, trying again .... host:{}  port:{}\033[m'.format(
                            mcpu["ip"], mcpu["port"]))
                        with self._mcpu_statu_lock:
                            self._mcpu_connect_status[key] = False

                    except Exception as e:
                        print('\033[0;31m{}  host:{}  port:{} connect error:{}\033[m'.format(key, mcpu["ip"],
                                                                                             mcpu["port"], str(e)))
                        with self._mcpu_statu_lock:
                            self._mcpu_connect_status[key] = False

            time.sleep(0.1)

    def McpuCommunicatorUnInit(self):
        self._is_close = True
        self._reconnect_thread.join()
        for thread in self._mcpu_communication_thread.values():
            thread.join()
        for mcpu in self._mcpu_socket.values():
            mcpu["socket"].close()
    def GetMcpuIoMsg(self,key):
        return self._mcpu_iomsg[key]
    def GetAllMcpuConnectStatus(self):
        return self._mcpu_connect_status
    def GetMcpuConnectStatus(self,key):
        return self._mcpu_connect_status[key]
    def McpuCommunicationThread(self, key):
        while self._is_close is False:
            if self._mcpu_connect_status[key] is True:
                length_data = ""
                try:
                    length_data = self._mcpu_socket[key]["socket"].recv(1024)
                except Exception as e:
                    print('\033[0;31m{}   recv error:{}\033[m'.format(key, str(e)))
                # print(len(length_data))
                if len(length_data) == 0:
                    with self._mcpu_statu_lock:
                        self._mcpu_connect_status[key] = False
                elif len(length_data) > 0:
                    head = length_data.find(b'@')
                    tail = length_data.find(b'$')
                    if head >= 0 and tail >= 0:
                        bytes = length_data[head + 4:-3]
                        self._mcpu_iomsg[key] = TimeStatu(self.recieve2message(bytes), 3)
                    else:
                        print('\033[0;33m{}   data error:{}\033[m'.format(key, length_data))
            time.sleep(0.001)

    def recieve2message(self, bytes):
        try:
            data = json.loads(bytes.decode())
        except:
            return None
        return data