from datetime import datetime as dt
from typing import Optional
from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt

from utils.base.base import BaseMainWindow, BaseController
from gui.settings_window import settingsWindow
from gui.reportGui import ReportSettings

class MainWindow(BaseMainWindow):
    def __init__(self, 
                 controller: Optional[BaseController] = None):
        super().__init__()
        self._controller = controller
        self.initUI()
        self.set_style(self)
        self.settings_button.clicked.connect(self._show_settings)
        self.select_dir_button.clicked.connect(self._select_dir)
        self.report_button.clicked.connect(self._report_window)
        self.operSettings = settingsWindow("params/operator_params.json", 'Operator', self._updater_trigger)
        self.sysSettings = settingsWindow("params/system_params.json", 'System', self._updater_trigger)
        self.repSettings = ReportSettings()

    def initUI(self) -> None:
        self.tabWidget = QtWidgets.QTabWidget()
        self.tabWidget.setTabsClosable(True)
        self.tabWidget.tabCloseRequested.connect(self._close_tab)
        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.tabWidget)

        self.settings_button = QtWidgets.QPushButton("Show settings")
        self.settings_button.setFixedWidth(160)
        self.select_dir_button = QtWidgets.QPushButton("Open directory")
        self.select_dir_button.setFixedWidth(175)
        self.report_button = QtWidgets.QPushButton("Generate report")
        self.report_button.setFixedWidth(175)
        button_layout = QtWidgets.QHBoxLayout()
        button_layout.setSpacing(2)
        button_layout.addWidget(self.settings_button)
        button_layout.addWidget(self.select_dir_button)
        button_layout.addWidget(self.report_button)

        layout.addLayout(button_layout)
        self.setLayout(layout)

    def show_plot_tabs(self, plot_widgets: list[QtWidgets.QWidget]) -> None:
        for plot_widget in plot_widgets:
            widget, reg_items, curve_items = plot_widget
            
            tab = QtWidgets.QWidget()
            tab.setProperty("reg_items", reg_items) 
            tab.setProperty("curve_items", curve_items) 
            grid = QtWidgets.QGridLayout()
            grid.addWidget(widget)
            tab.setLayout(grid)
            self.tabWidget.addTab(tab, "SF_trace_" + dt.now().strftime('%Y_%m_%d-%H_%M_%S'))
            self.tabWidget.setCurrentWidget(tab)

        tab_count = self.tabWidget.count()
        if tab_count > 10:
            for i in range(0, tab_count-2):
                self._close_tab(i)

    def keyPressEvent(self, a0):
        if a0.key() == Qt.Key_F5:
            pass

    def _show_settings(self):
        self.operSettings.show()
        self.sysSettings.show()
    
    def push_settings(self) -> None:
        self._updater_trigger()

    def _updater_trigger(self) -> None:
        self.tabWidget.clear()
        operator_params = self.operSettings.getParams()
        system_params = self.sysSettings.getParams()
        self._controller.push_settings([operator_params, system_params])
        
    def _close_tab(self, index:int) -> None:
        self.tabWidget.removeTab(index)
    
    def _select_dir(self):
        folder_path = QtWidgets.QFileDialog.getExistingDirectory(self, 'Select directory', "")
        if folder_path:
            self._controller.open_custom_file(folder_path)

    def _report_window(self):
        tab = self.tabWidget.currentWidget()
        reg_items = tab.property("reg_items")
        curve_items = tab.property("curve_items")
        self.repSettings.build(reg_items, curve_items)