"""
    TD Blood Prime UI Loader
"""
# Python
import os
import can
import struct

# Qt
from PySide2                import QtCore, QtWidgets
from PySide2.QtCore         import Slot

# parent
from engine.dynamicloader   import DynamicLoader

# plugin specific
from leahi_dialin.common.msg_defs import MsgIds, MsgFieldPositions
from leahi_dialin.protocols       import CAN
from leahi_dialin.utils           import conversions

from leahi_dialin.common.td_defs  import TDOpModes
from leahi_dialin.common.td_defs  import TDStandbyStates

# hd Simulator
from leahi_dialin.ui.td_messaging import TD_Messaging

class Loader(DynamicLoader):
    """
    TD Blood Prime UI Loader
    """

    def __init__(self):
        self.td_interface = TD_Messaging()
        self.can_interface = self.td_interface.can_interface
        super().__init__(os.path.dirname(__file__))


    def _init_loader(self):
        """
        finds and creates widgets
        :return: none
        """
        self.tbSend             = self.find_widget(QtWidgets.QToolButton    , 'tbSend'              )
        self.tbReset            = self.find_widget(QtWidgets.QToolButton    , 'tbReset'             )

        self.slTargetVolume     = self.find_widget(QtWidgets.QSlider        , 'slTargetVolume'      )
        self.lbTargetVolume     = self.find_widget(QtWidgets.QLabel         , 'lbTargetVolume'      )
        self.slDeliveredVolume  = self.find_widget(QtWidgets.QSlider        , 'slDeliveredVolume'   )
        self.lbDeliveredVolume  = self.find_widget(QtWidgets.QLabel         , 'lbDeliveredVolume'   )


    def _init_connections(self):
        """
        initializes the widgets connections
        :return: none
        """
        self.tbSend             .clicked        .connect(self.do_send)
        self.tbReset            .clicked        .connect(self.do_reset)
        self.slTargetVolume     .valueChanged   .connect(self.do_send)
        self.slTargetVolume     .valueChanged   .connect(lambda value: self.lbTargetVolume.setText(f"{value}"))
        self.slDeliveredVolume  .valueChanged   .connect(self.do_send)
        self.slDeliveredVolume  .valueChanged   .connect(lambda value: self.lbDeliveredVolume.setText(f"{value}"))


    @Slot()
    def _init_widgets(self):
        """
        initializes the widgets' properties
        :return: none
        """
        self.do_reset()


    @Slot()
    def do_send(self):
        """
        slot for sending blood prime data
        :return: none
        """
        self.td_interface.td_blood_prime_progress(
            self.slTargetVolume.value(),
            self.slDeliveredVolume.value()
        )


    @Slot()
    def do_reset(self):
        self.slTargetVolume     .setValue(0)
        self.slDeliveredVolume  .setValue(0)