import sys
from typing import Optional

from PyQt6.QtCore import Qt
from PyQt6.QtWidgets import QDockWidget, QLabel

import constants
from aboutdialog import AboutDialog
from raven.mainwindow import MainWindow
from raven.pluginbase import PluginBase
from raven.plugins.domain.menucontribution import MenuContribution
from raven.plugins.domain.raction import RAction
from raven.plugins.ravenlog.Tab import Tab


class RavenLogPlugin(PluginBase):
    def __init__(self):
        super(RavenLogPlugin, self).__init__()
        self.main_window = None

    def create_main_window(self):
        if not self.main_window:
            self.main_window = MainWindow()
        return self.main_window

    def get_menu_contributions(self) -> [MenuContribution]:
        return [
            MenuContribution("file", action=self._action_close(), action_id="close application", after="<last>"),
            MenuContribution("help", action=self._action_about(), action_id="open about dialog", after="<last>"),
        ]

    def current_file(self) -> Optional[str]:
        return self.main_window.tabs.current_file()

    def add_tab(self, tab: Tab):
        self.main_window.tabs.add_tab(tab)

    def add_dock(self, area: Qt.DockWidgetArea, widget: Tab):
        dock_widget = QDockWidget(widget.title, self.main_window)
        dock_widget.setWidget(widget)
        self.main_window.addDockWidget(area, dock_widget)

    def _action_about(self) -> RAction:
        about_action = RAction(
            "&About",
            action=lambda: AboutDialog().exec(),
            icon_file=constants.raven_icon
        )
        return about_action

    def _action_close(self) -> RAction:
        icon = "close" if sys.platform == 'win32' or sys.platform == 'cygwin' else "exit"
        close_action = RAction("E&xit", action=lambda: self.main_window.destruct(), shortcut='Ctrl+X',
                               icon_from_theme=icon)
        return close_action