# coding = utf-8
import struct
from apps.web.constant import Const


class DefaultParams(object):
    """
    常量参数、默认参数
    """
    STATUS_MAP = {
        0x00: Const.DEV_WORK_STATUS_IDLE,
        0x01: Const.DEV_WORK_STATUS_WORKING,
        0x02: Const.DEV_WORK_STATUS_APPOINTMENT,
        0x03: Const.DEV_WORK_STATUS_FAULT,              # 故障
        0x04: Const.DEV_WORK_STATUS_FAULT,              # 烟感
        0x05: Const.DEV_WORK_STATUS_FAULT,              # 雨感
        0x06: Const.DEV_WORK_STATUS_FAULT               # 设备锁定
    }

    REASON_MAP = {
        0x00: u"充满自停",
        0x01: u"未检测到充电设备",
        0x02: u"过载结束",
        0x03: u"电压输出故障",
        0x04: u"刷卡结束",
        0x05: u"充满自停",
        0x06: u"密码开锁结束订单"
    }


class LineInfo(object):

    def __init__(self, orderNo, port, voltage, current, power, elec, chargeTime, stayTime, temperature, status=0x00):
        """
        粤万通的端口信息
        :param orderNo: 订单编号
        :param port: 端口号
        :param voltage: 电压
        :param current: 电流
        :param power: 功率
        :param elec: 电量
        :param chargeTime: 充电时间
        :param stayTime: 占位时间
        :param temperature: 当前端口的温度
        """
        self._orderNo = orderNo
        self._port = port
        self._voltage = voltage
        self._current = current
        self._power = power
        self._elec = elec
        self._chargeTime = chargeTime
        self._stayTime = stayTime
        self._temperature = temperature
        self._status = status

    @property
    def orderNo(self):
        """主板与服务器之间的唯一键 目前使用订单编号代替 后期可能会使用流水号"""
        return str(self._orderNo)

    @property
    def port(self):
        return str(self._port)

    @property
    def voltage(self):
        """充电电压 单位V"""
        return int(self._voltage)

    @property
    def current(self):
        """充电电流 单位A"""
        return int(self.current) / 1000.0

    @property
    def power(self):
        """功率 单位w"""
        return int(self._power)

    @property
    def elec(self):
        """消耗的电量 单位kw·h"""
        return int(self._elec) / 1000.0

    @property
    def chargeTime(self):
        """充电时间 单位分钟"""
        return int(self._chargeTime)

    @property
    def stayTime(self):
        """占位时间 单位分钟"""
        return int(self._stayTime)

    @property
    def temperature(self):
        """温度 单位 ℃"""
        return int(self._temperature) / 10.0

    @property
    def status(self):
        """端口状态 需要经过映射转换"""
        return DefaultParams.STATUS_MAP.get(self._status, Const.DEV_WORK_STATUS_FAULT)


class BaseUartData(object):
    """
    解析来自主板的串口数据
    """
    def __init__(self, uartStr):
        self._source = uartStr

    @property
    def head(self):
        """帧头 2个字节"""
        return self._source[:2]

    @property
    def tail(self):
        """帧尾"""
        return self._source[-2:]

    @property
    def length(self):
        """数据长度 从起始到结束"""
        return int(self._source[2: 6], 16)

    @property
    def cmd(self):
        """指令关键字"""
        return self._source[6: 8]

    @property
    def check(self):
        """校验字节 """
        return self._source[-4: -2]

    @property
    def data(self):
        """数据包"""
        return self._source[8: -4]


class UartC0(BaseUartData):

    def __init__(self, uartStr):
        super(UartC0, self).__init__(uartStr)

        data = self.data
        orderNo = struct.unpack("<H", "")
        port = int(data[14: 16], 16)
        voltage = int(data[16: 20], 16)
        current = int(data[20: 24], 16)
        power = int(data[24: 28], 16)
        elec = int(data[28: 36], 16)
        chargeTime = int(data[36: 40], 16)
        stayTime = int(data[40: 44], 16)
        temperature = int(data[44: 48], 16)
        status = int(data[48: 50], 16)

        self._lineInfo = LineInfo(orderNo, port, voltage, current, power, elec, chargeTime, stayTime, temperature, status)

    @property
    def lineInfo(self):
        """端口的信息"""
        return self._lineInfo


class UartC1(BaseUartData):

    def __init__(self, uartStr):
        super(UartC1, self).__init__(uartStr)

        data = self.data
        orderNo = int(data[:14], 16)
        port = int(data[14: 16], 16)
        voltage = int(data[16: 20], 16)
        current = int(data[20: 24], 16)
        power = int(data[24: 28], 16)
        elec = int(data[28: 36], 16)
        chargeTime = int(data[36: 40], 16)
        stayTime = int(data[40: 44], 16)
        temperature = int(data[44: 48], 16)
        reasonCode = int(data[48: 50], 16)

        self._lineInfo = LineInfo(orderNo, port, voltage, current, power, elec, chargeTime, stayTime, temperature)
        self._reasonCode = reasonCode

    @property
    def reasonCode(self):
        """结束原因的code"""
        return self._reasonCode

    @property
    def reason(self):
        """结束原因的文字描述"""
        return DefaultParams.REASON_MAP.get(self.reasonCode, u"未知原因")


class UartB3(BaseUartData):
    # TODO
    def __init__(self, uartStr):
        super(UartB3, self).__init__(uartStr)


class UartB4(BaseUartData):
    # TODO
    def __init__(self, uartStr):
        super(UartB4, self).__init__(uartStr)