Midea/midea_ac_lan/midea/devices/e2/message.py

from ...core.message import (
    MessageType,
    MessageRequest,
    MessageResponse,
    MessageBody,
)


class MessageE2Base(MessageRequest):
    def __init__(self, device_protocol_version, message_type, body_type):
        super().__init__(
            device_protocol_version=device_protocol_version,
            device_type=0xE2,
            message_type=message_type,
            body_type=body_type
        )

    @property
    def _body(self):
        raise NotImplementedError


class MessageQuery(MessageE2Base):
    def __init__(self, device_protocol_version):
        super().__init__(
            device_protocol_version=device_protocol_version,
            message_type=MessageType.query,
            body_type=0x01)

    @property
    def _body(self):
        return bytearray([0x01])


class MessagePower(MessageE2Base):
    def __init__(self, device_protocol_version):
        super().__init__(
            device_protocol_version=device_protocol_version,
            message_type=MessageType.set,
            body_type=0x02)
        self.power = False

    @property
    def _body(self):
        if self.power:
            self.body_type = 0x01
        else:
            self.body_type = 0x02
        return bytearray([0x01])


class MessageNewProtocolSet(MessageE2Base):
    def __init__(self, device_protocol_version):
        super().__init__(
            device_protocol_version=device_protocol_version,
            message_type=MessageType.set,
            body_type=0x14)
        self.target_temperature = None
        self.variable_heating = None
        self.whole_tank_heating = None

    @property
    def _body(self):
        byte1 = 0x00
        byte2 = 0x00
        if self.target_temperature is not None:
            byte1 = 0x07
            byte2 = int(self.target_temperature) & 0xFF
        elif self.whole_tank_heating is not None:
            byte1 = 0x04
            byte2 = 0x02 if self.whole_tank_heating else 0x01
        elif self.variable_heating is not None:
            byte1 = 0x10
            byte2 = 0x01 if self.variable_heating else 0x00
        return bytearray([byte1, byte2])


class MessageSet(MessageE2Base):
    def __init__(self, device_protocol_version):
        super().__init__(
            device_protocol_version=device_protocol_version,
            message_type=MessageType.set,
            body_type=0x04)
        self.target_temperature = 0
        self.variable_heating = False
        self.whole_tank_heating = False
        self.protection = False

    @property
    def _body(self):
        # Byte 4 whole_tank_heating, protection
        protection = 0x04 if self.protection else 0x00
        whole_tank_heating = 0x02 if self.whole_tank_heating else 0x01
        # Byte 5 target_temperature
        target_temperature = self.target_temperature & 0xFF
        # Byte 9 variable_heating
        variable_heating = 0x10 if self.variable_heating else 0x00
        return bytearray([
            0x01,
            0x00,
            0x80,
            whole_tank_heating | protection,
            target_temperature,
            0x00, 0x00, 0x00,
            variable_heating,
            0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x00, 0x00,
            0x00
        ])


class E2GeneralMessageBody(MessageBody):
    def __init__(self, body):
        super().__init__(body)
        self.power = (body[2] & 0x01) > 0
        self.heating = (body[2] & 0x04) > 0
        self.keep_warm = (body[2] & 0x08) > 0
        self.variable_heating = (body[2] & 0x80) > 0
        self.current_temperature = body[4]
        self.whole_tank_heating = (body[7] & 0x08) > 0
        self.heating_time_remaining = body[9] * 60 + body[10]
        self.target_temperature = body[11]
        self.protection = ((body[22] & 0x02) > 0) if len(body) > 22 else False
        if len(body) > 25:
            self.water_consumption = body[24] + (body[25] << 8)
        if len(body) > 34:
            self.heating_power = body[34] * 100


class MessageE2Response(MessageResponse):
    def __init__(self, message):
        super().__init__(message)
        if (self.message_type in [MessageType.query, MessageType.notify1] and self.body_type == 0x01) or \
                (self.message_type == MessageType.set and self.body_type in [0x01, 0x02, 0x04, 0x14]):
            self.set_body(E2GeneralMessageBody(super().body))
        self.set_attr()