###########################################################################
#
# Copyright (c) 2019-2020 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 rtc.py
#
# @author (last) Peter Lucia
# @date (last) 21-Aug-2020
# @author (original) Peter Lucia
# @date (original) 02-Apr-2020
#
############################################################################
import ctypes
from ..protocols.CAN import (DenaliMessage,
                             DenaliChannels)
from ..utils.conversions import integer_to_bytearray
from ..utils.base import _AbstractSubSystem, _publish
from ..common.msg_defs import MsgIds
from logging import Logger


class HDRTC(_AbstractSubSystem):
    """

    Hemodialysis Delivery (HD) Dialin API sub-class for rtc commands.

    """

    START_POS_SET_PT = DenaliMessage.PAYLOAD_START_INDEX
    END_POS_SET_PT = START_POS_SET_PT + 4

    def __init__(self, can_interface, logger: Logger):
        """

        @param can_interface: Denali Can Messenger object
        """

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

        if self.can_interface is not None:
            channel_id = DenaliChannels.hd_sync_broadcast_ch_id
            msg_id = MsgIds.MSG_ID_RTC_EPOCH.value
            self.can_interface.register_receiving_publication_function(channel_id, msg_id,
                                                                       self._handler_rtc_epoch)
        self.rtc_epoch = 0

    def get_rtc_epoch(self):
        """
        Gets the rtc epoch

        @return: The rtc epoch
        """
        return self.rtc_epoch

    @_publish(["rtc_epoch"])
    def _handler_rtc_epoch(self, message):
        """
        Publishes the rtc time in epoch

        @param message:  published rtc epoch message
        @return: None
        """
        epoch = int.from_bytes(bytearray(
            message['message'][self.START_POS_SET_PT:self.END_POS_SET_PT]),
            byteorder=DenaliMessage.BYTE_ORDER)
        self.rtc_epoch = ctypes.c_uint32(epoch)

    def cmd_set_rtc_time_and_date(self, second: int, minute: int, hour: int, day: int, month: int, year: int):
        """
        Sets the RTC time and date from the provided

        @param second: (int) Second
        @param minute:  (int) Minute
        @param hour:  (int) Hour
        @param day: (int) Day
        @param month: (int) Month
        @param year: (int) Year
        @return: 1 if Successful, False otherwise
        """
        sec = bytes([second])
        mint = bytes([minute])
        hour = bytes([hour])
        day = bytes([day])
        month = bytes([month])
        year = integer_to_bytearray(year)
        payload = sec + mint + hour + day + month + year

        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_hd_ch_id,
                                              message_id=MsgIds.MSG_ID_SET_RTC_DATE_TIME.value,
                                              payload=payload)

        self.logger.debug("Setting time and date to rtc")

        # Send message
        received_message = self.can_interface.send(message)

        # If there is content...
        if received_message is not None:
            self.logger.debug(received_message)
            # str_res = str(flow)
            self.logger.debug("Time and Date in rtc set to seconds: " + str(sec) + " minutes: " + str(min) + " hours: " +
                  str(hour) + " days: " + str(day) + " months: " + str(month) + " years: " + str(year) +
                  str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]))
            # response payload is OK or not OK
            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
        else:
            self.logger.debug("Timeout!!!!")
            return False