# coding=utf-8

import csv
import os, sys
import uuid
import datetime

import pandas
import simplejson as json
from django.conf import settings

from base import init_env
env = sys.argv[1]
os.environ.setdefault('DJANGO_SETTINGS_MODULE', env)
init_env(interactive=False)

from apilib.utils_mqtt import get_share_prefix
from apps.web.constant import Const, MQTT_GROUP
from apps.web.core.mqtt_client import MqttClient
from apps.web.device.models import Device


class M(MqttClient):

    def __init__(self, *args, **kwargs):
        super(M, self).__init__(*args, **kwargs)
        self.powerData = []

    @staticmethod
    def on_connect_func(client, *args, **kwargs):
        device_topic = get_share_prefix(MQTT_GROUP.event, Const.SERVER_TOPIC_PREFIX)+'/865650048394338'+"/100"
        client.subscribe(device_topic, qos=Const.MQTT_QOS)
        print "on connect ok"

    @staticmethod
    def on_message_func(client, obj, msg):
        msgDict = json.loads(bytes.decode(msg.payload))
        data = msgDict.get("data")
        handFunc = client.dispatch(msgDict)
        if not handFunc:
            return
        client.powerData = handFunc(data)
        print client.powerData
        client.collect_call_back(client.powerData)

    @staticmethod
    def handle_jiu_hen_data(data):
        needData = data[10:-2]
        dataList = list()
        timeStr = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        while needData:
            port = int(needData[:2], 16)
            status = needData[2:4]
            chargeTime = int(needData[4:8], 16)
            power = int(needData[8:12], 16)
            elec = int(needData[12:16], 16)

            needData = needData[16:]

            dataList.append(
                {
                    "port": port,
                    "status": status,
                    "chargeTime": chargeTime,
                    "elec": elec,
                    "power": power,
                    "timeStr": timeStr
                }
            )
        return dataList

    @staticmethod
    def handle_dian_chuan_data(data):
        needData = data[18:-2]
        timeStr = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")

        # 继电器状态字节
        statusData = needData[6:10]
        # 功率字节
        powerData = needData[10: 50]
        # 剩余时间字节
        timeData = needData[50:90]

        dataList = []
        statusData = "{:0>10}".format(bin(int(statusData, 16)).replace("0b", ""))
        for i in xrange(10):
            dataList.append(
                {
                    "port": i + 1,
                    "status": int(statusData[i]),
                    "chargeTime": int(timeData[i * 4: (i + 1) * 4], 16),
                    "elec": 0,
                    "power": int(powerData[i * 4: (i + 1) * 4], 16),
                    "timeStr": timeStr
                }
            )

        return dataList

    @staticmethod
    def get_jiu_hen_cmd(data):
        return data[4:6]

    @staticmethod
    def get_dian_chuan_cmd(data):
        return data[4:6]

    def dispatch(self, msgDict):
        FUNC_MAP = {
            "100210_24": self.handle_dian_chuan_data,
            "100202_21": self.handle_jiu_hen_data
        }
        CMD_MAP = {
            "100202": self.get_jiu_hen_cmd,
            "100210": self.get_dian_chuan_cmd
        }
        devNo = msgDict.get("IMEI", "")
        dev = Device.get_dev(devNo)
        if not dev:
            return

        driverCode = dev.get("devType", dict()).get("code")
        if not driverCode:
            return

        cmdFunc = CMD_MAP.get(driverCode)
        if not cmdFunc:
            return

        cmd = cmdFunc(msgDict.get("data", ""))
        _key = "{}_{}".format(driverCode, cmd)
        return FUNC_MAP.get(_key)


class DrawPower(object):
    def __init__(self, path=None):
        if path is None:
            path = "power.csv"

        self.path = path
        self.client = M(client_id='webapp_'+str(uuid.uuid1()))
        self.client.collect_call_back  = self.save_data

    def save_data(self, dataList):
        if not dataList or not len(dataList):
            return
        flag = os.path.exists(self.path)
        with open(self.path, "ab+") as f:
            fieldnames = dataList[0].keys()
            writer = csv.DictWriter(f, fieldnames=fieldnames)
            if not flag:
                writer.writeheader()
            writer.writerows(dataList)

    def read_data(self):
        return pandas.read_csv(self.path)

    def draw(self, port=None, allPorts=10):
        print "drawing......"
        if port:
            # data = self.read_data()[port-1: : allPorts]
            data = self.read_data()
            ax = data.plot(y=["power", "chargeTime"], x="timeStr")
            fig = ax.get_figure()
            fig.savefig("{}.png".format(self.path.split(".")[0]))
        else:
            for i in xrange(allPorts):
                data = self.read_data()[i:: allPorts]
                ax = data.plot(y=["power", "chargeTime"], x="timeStr")
                fig = ax.get_figure()
                fig.savefig("{}-{}.png".format(self.path.split(".")[0], i+1))

    def run(self):
        try:
            self.client.on_message = self.client.on_message_func
            self.client.on_connect = self.client.on_connect_func

            self.client.connect(settings.MQTT_HOSTNAME, settings.MQTT_PORT, 60)
            print settings.MQTT_HOSTNAME
            print settings.MQTT_PORT
            self.client.loop_forever()

        finally:
            self.client.disconnect()
            self.client.close()


if __name__ == '__main__':
    d = DrawPower("1600601534269816.csv")
    # d.run()
    d.draw(1)