"""
    The Ultrafiltration ui loader
"""
import os
from simulator.dynamicloader import DynamicLoader
from PySide2 import QtWidgets
from PySide2.QtCore import Slot
from dialin.squish import denaliMessages
from dialin.squish.denaliMessages import txStates


class Loader(DynamicLoader):
    """
    The Ultrafiltration ui loader
    """
    tblSubMode: QtWidgets.QTableWidget
    tblUFStates: QtWidgets.QTableWidget
    tblSalineStates: QtWidgets.QTableWidget
    tblHeparinStates: QtWidgets.QTableWidget

    def __init__(self):
        super().__init__(os.path.dirname(__file__))

        # apply/send the initial states
        self.do_treatment_states()

    def _init_loader(self):
        """
        finds and creates widgets
        :return: none
        """
        self.tblSubMode = self.find_table_widget('tblSubMode')
        self.tblUFStates = self.find_table_widget('tblUFStates')
        self.tblSalineStates = self.find_table_widget('tblSalineStates')
        self.tblHeparinStates = self.find_table_widget('tblHeparinStates')

    def _init_connections(self):
        """
        initializes the widgets connections
        :return: none
        """
        self.tblSubMode.cellClicked.connect(self.do_treatment_states)
        self.tblUFStates.cellClicked.connect(self.do_treatment_states)
        self.tblSalineStates.cellClicked.connect(self.do_treatment_states)
        self.tblHeparinStates.cellClicked.connect(self.do_treatment_states)

    def _init_widgets(self):
        """
        initializes the widgets' properties
        :return: none
        """
        self.tblSubMode.setCurrentCell(txStates.TREATMENT_DIALYSIS_STATE, 0)
        self.tblUFStates.setCurrentCell(txStates.UF_OFF_STATE, 0)
        self.tblSalineStates.setCurrentCell(txStates.SALINE_BOLUS_STATE_IDLE, 0)
        self.tblHeparinStates.setCurrentCell(txStates.HEPARIN_STATE_OFF, 0)

    @Slot()
    def do_treatment_states(self):
        """
        the slot for saline bolus state change
        :return: none
        """
        sub_mode = self.tblSubMode.verticalHeaderItem(self.tblSubMode.currentRow()).text()
        uf_state = self.tblUFStates.verticalHeaderItem(self.tblUFStates.currentRow()).text()
        saline = self.tblSalineStates.verticalHeaderItem(self.tblSalineStates.currentRow()).text()
        heparin = self.tblHeparinStates.verticalHeaderItem(self.tblHeparinStates.currentRow()).text()
        denaliMessages.setTreatmentStatesData(sub_mode, uf_state, saline, heparin)