###########################################################################
#
# Copyright (c) 2020-2024 Diality Inc. - All Rights Reserved.
#
# THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
# WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
#
# @file    ro_proxy.py
#
# @author  (last)      Micahel Garthwaite
# @date    (last)      18-Aug-2023
# @author  (original)  Peter Lucia
# @date    (original)  02-Apr-2020
#
############################################################################
import struct
from logging import Logger

from leahi_dialin.common.msg_defs import MsgIds, MsgFieldPositions
from leahi_dialin.protocols.CAN import DenaliMessage, DenaliCanMessenger, DenaliChannels
from leahi_dialin.utils.base import AbstractSubSystem, publish
from leahi_dialin.utils.conversions import integer_to_bytearray, byte_to_bytearray, float_to_bytearray


class ROProxy(AbstractSubSystem):
    """
    Dialysate Delivery (DD) Dialin API sub-class for RO proxy ( injection ) related commands.
    """

    def __init__(self, can_interface: DenaliCanMessenger, logger: Logger):
        """
        ROProxy constructor

        @param can_interface: the Denali CAN interface object
        """

        super().__init__()
        self.can_interface = can_interface
        self.logger = logger

        # no current registered call back methods

    def cmd_set_start_stop_override_request(self, signal: int = 0):
        """
        Constructs and sends a set start-stop override request to the FP to generate permeate.

        @param: signal: 0 to request stop and go to standby or 1 to start generate permeate via pre-generate
        @return: none
        """
        sig = integer_to_bytearray(signal)
        payload = sig
        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_fp_ch_id,
                                              message_id=MsgIds.MSG_ID_FP_SET_START_STOP_OVERRIDE_REQUEST.value,
                                              payload=payload)

        self.logger.debug("Sending start-stop request to FP.")
        self.can_interface.send(message, 0)