import collections
import json
from utils.DBModels.DeviceModels import DeviceDB
from model.ProjectModel.AreaManage import Area


class Device():
    areas = []
    startAddress = None
    endAddress = 0
    protocolType = None
    masterOrSlave = None
    deviceName = None
    def __init__(self):
        pass

    def addArea(self, type, nums, bytes):
        area = Area()
        area.startAddress = self.endAddress
        length = int(nums) * int(bytes)
        if length % 2 != 0:
            length = (length + 1) // 2
        else:
            length = length / 2
        area.endAddress = startAddress + length
        self.endAddress = area.endAddress
        for index, address in range(area.startAddress, area.endAddress):
            if index % bytes == 0 and self.protocolType == 'DP':
                area.


    def getValueLength(self):
        pass


    def writeAreas(self):
        pass

    @classmethod
    def delAreas(self, deviceName, ids):

        jsonCon = json.loads(DeviceDB.getByName(deviceName=deviceName).areaJson)
        for id in ids:
            jsonCon.pop(id - 1)

        if jsonCon == []:
            areaJson = None
            DeviceDB.update(areaJson=areaJson).where(DeviceDB.deviceName == deviceName).execute()
        else:
            for index, areajsonId in enumerate(jsonCon):
                areajsonId["id"] = index + 1
            areaJson = json.dumps(jsonCon)
         
            DeviceDB.update(areaJson=areaJson).where(DeviceDB.deviceName == deviceName).execute()


    @classmethod
    def getAreaJson(self, deviceNames):
        deviceName = deviceNames
        jsonConsStr = DeviceDB.getByName(deviceName=deviceName).areaJson
        if jsonConsStr is None:
            return
        else:
            jsonCons = json.loads(jsonConsStr)
            return jsonCons

class DevicesManange():
    def __init__(self):
        self.dpMasterDevices = collections.OrderedDict()
        self.dpSlaveDevices = collections.OrderedDict() # 有序字典 (OrderedDict)
        self.paMasterDevices = collections.OrderedDict()
        self.paSlaveDevices = collections.OrderedDict()


    def addDevice(self, proType, masterSlaveModel, deviceName):
        device = Device()
        device.type = proType
        device.masterSlaveModel = masterSlaveModel
        device.deviceName = deviceName
        masterSlaveModel = masterSlaveModel

        if proType == "DP" and masterSlaveModel == "主站":
            curProDict = self.dpMasterDevices
        elif proType == "DP" and masterSlaveModel == "从站":
            curProDict = self.dpSlaveDevices
        elif proType == "PA" and masterSlaveModel == "主站":
            curProDict = self.paMasterDevices
        elif proType == "PA" and masterSlaveModel == "从站":
            curProDict = self.paSlaveDevices

        if len(curProDict) == 0:
            device.startAddress = 0
        else:
            device.startAddress = curProDict.values[-1].endAddress + 1
        curProDict[deviceName] = device

    @classmethod
    def addAreas(self, type, nums, bytes, deviceName):
        if DeviceDB.getByName(deviceName=deviceName).areaJson is None:
            jsonCon = ([{
                "id": 1,
                "type": type,
                "nums": nums,
                "bytes": bytes,
            }])
        else:
            jsonCon = json.loads(DeviceDB.getByName(deviceName=deviceName).areaJson)
            id = jsonCon[-1]["id"] + 1
            jsonCon.append({
                "id": id,
                "type": type,
                "nums": nums,
                "bytes": bytes,
            })
        areaJson = json.dumps(jsonCon)
        DeviceDB.update(areaJson=areaJson).where(DeviceDB.deviceName == deviceName).execute()

    @classmethod
    def getAreaID(self, deviceNames):
        deviceName = deviceNames
        jsonConsStr = DeviceDB.getByName(deviceName=deviceName).areaJson
        if jsonConsStr is None:
            return
        else:
            jsonCons = json.loads(jsonConsStr)
            id = []
            for jsonCon in jsonCons:
                id.append(jsonCon["id"])
            return id


    @classmethod
    def getChannelLength(self, deviceName):
        number = 0
        if DeviceDB.getByName(deviceName=deviceName).areaJson is None:
            return number
        else:
            numbers = json.loads(DeviceDB.getByName(deviceName=deviceName).areaJson)
            for i in numbers:
                number += int(i['nums'])
            return number

    def editDevies(self):
        pass

    @classmethod
    def getAllDevice(self):
        # 查询所有设备
        devices = DeviceDB.get_all()
        if devices is 'error':
            return
        l = []
        for x in devices:
            l.append([x.deviceName, x.proType, x.masterSlaveModel, x.areaJson])
        return l