"""
The Saline Bolus ui loader class
"""
# Python
import os
# Qt
from PySide2 import QtWidgets
from PySide2.QtCore import Slot
# parent
from simulator.dynamicloader import DynamicLoader
# hd Simulator
from simulator.interface import SimulationInterface
from dialin.ui.hd_simulator import TXStates
# plugin specific
# -- none --


class Loader(DynamicLoader):
    """
    The Saline Bolus ui loader class
    """

    btnSalineAccept: QtWidgets.QPushButton
    btnSalineReject: QtWidgets.QPushButton
    lblSalineAction: QtWidgets.QLabel
    spnSalineRejectReason: QtWidgets.QSpinBox
    cmbSalineAcceptTarget: QtWidgets.QComboBox
    sldSalineTarget: QtWidgets.QSlider
    sldSalineCumulative: QtWidgets.QSlider
    sldSalineVolume: QtWidgets.QSlider

    saline_requested_state: TXStates

    def __init__(self, interface: SimulationInterface):
        super().__init__(os.path.dirname(__file__), interface)
        self.saline_requested_state = TXStates.SALINE_BOLUS_STATE_IDLE

    def _init_loader(self):
        """
        finds and creates widgets
        :return: none
        """
        # saline adjustment
        self.btnSalineAccept = self.find_button('btnSalineAccept')
        self.btnSalineReject = self.find_button('btnSalineReject')
        self.lblSalineAction = self.find_label('lblSalineAction')
        self.spnSalineRejectReason = self.find_spinbox('spnSalineRejectReason')
        self.cmbSalineAcceptTarget = self.find_combobox('cmbSalineAcceptTarget')
        # saline data
        self.sldSalineTarget = self.find_slider('sldSalineTarget')
        self.sldSalineCumulative = self.find_slider('sldSalineCumulative')
        self.sldSalineVolume = self.find_slider('sldSalineVolume')

    def _init_widgets(self):
        """
        initializes the widgets' properties
        :return: none
        """
        pass

    def _init_connections(self):
        """
        initializes the widgets connections
        :return:
        """
        # saline adjustment
        self.btnSalineAccept.clicked.connect(self.do_sb_accept)
        self.btnSalineReject.clicked.connect(self.do_sb_reject)
        # saline data
        self.sldSalineTarget.valueChanged.connect(self.do_saline_data)
        self.sldSalineCumulative.valueChanged.connect(self.do_saline_data)
        self.sldSalineVolume.valueChanged.connect(self.do_saline_data)

    @Slot()
    def do_sb_accept(self):
        """
        the slot for accept saline bolus button
        :return: none
        """
        # toggle the saline requested state
        if self.saline_requested_state == TXStates.SALINE_BOLUS_STATE_IN_PROGRESS:
            self.saline_requested_state = TXStates.SALINE_BOLUS_STATE_IDLE
        else:
            self.saline_requested_state = TXStates.SALINE_BOLUS_STATE_IN_PROGRESS

        target = self.cmbSalineAcceptTarget.currentText()
        self.interface.hd.cmd_set_saline_bolus_response(
            True, 0, int(target), self.saline_requested_state
        )
        self.lblSalineAction.setText('Accepted ' + target)

    @Slot()
    def do_sb_reject(self):
        """
        the slot for accept saline bolus button
        :return: none
        """
        reason = self.spnSalineRejectReason.value()
        self.interface.hd.cmd_set_saline_bolus_response(
            False, reason, 0, self.saline_requested_state
        )
        self.lblSalineAction.setText('Rejected ' + "{}".format(reason))

    @Slot()
    def do_saline_data(self):
        """
        the slot which is called to send the saline bolus data
        by calling the denaliMessage API setTreatmentSalineBolusData
        :return: none
        """
        self.interface.hd.cmd_set_treatment_saline_bolus_data(
            self.sldSalineTarget.value(),
            self.sldSalineCumulative.value(),
            self.sldSalineVolume.value()
        )