import os
from logging import getLogger

from PyQt5.QtCore import Qt, QSettings, QTimer, QSize
from PyQt5.QtGui import QCloseEvent, QCursor
from PyQt5.QtWidgets import QMainWindow, QApplication, QStatusBar, QScrollArea, QScroller, QComboBox

from rare.components.tabs import TabWidget
from rare.shared import LegendaryCoreSingleton, GlobalSignalsSingleton, ArgumentsSingleton
from rare.utils.paths import data_dir

logger = getLogger("Window")


class MainWindow(QMainWindow):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent=parent)
        self.setAttribute(Qt.WA_DeleteOnClose)
        self.core = LegendaryCoreSingleton()
        self.signals = GlobalSignalsSingleton()
        self.args = ArgumentsSingleton()

        self.settings = QSettings()

        self.setWindowTitle("Rare - GUI for legendary")
        self.tab_widget = TabWidget(self)
        self.setCentralWidget(self.tab_widget)

        self.status_bar = QStatusBar()
        self.setStatusBar(self.status_bar)

        width, height = 1280, 720
        if self.settings.value("save_size", False, bool):
            width, height = self.settings.value("window_size", (width, height), tuple)

        self.resize(width, height)

        if not self.args.offline:
            try:
                from rare.utils.rpc import DiscordRPC
                self.rpc = DiscordRPC()
            except ModuleNotFoundError:
                logger.warning("Discord RPC module not found")

        self.timer = QTimer()
        self.timer.timeout.connect(self.timer_finished)
        self.timer.start(1000)

    def show_window_centered(self):
        self.show()
        # get the margins of the decorated window
        margins = self.windowHandle().frameMargins()
        # get the screen the cursor is on
        current_screen = QApplication.screenAt(QCursor.pos())
        if not current_screen:
            current_screen = QApplication.primaryScreen()
        # get the available screen geometry (excludes panels/docks)
        screen_rect = current_screen.availableGeometry()
        decor_width = margins.left() + margins.right()
        decor_height = margins.top() + margins.bottom()
        window_size = QSize(self.width(), self.height()).boundedTo(
            screen_rect.size() - QSize(decor_width, decor_height)
        )

        self.resize(window_size)
        self.move(
            screen_rect.center()
            - self.rect().adjusted(0, 0, decor_width, decor_height).center()
        )

        # enable kinetic scrolling
        for scroll_area in self.findChildren(QScrollArea):
            if not scroll_area.property("no_kinetic_scroll"):
                QScroller.grabGesture(scroll_area.viewport(), QScroller.LeftMouseButtonGesture)

            # fix scrolling
            for combo_box in scroll_area.findChildren(QComboBox):
                combo_box.wheelEvent = lambda e: e.ignore()

    def timer_finished(self):
        file_path = os.path.join(data_dir, "lockfile")
        if os.path.exists(file_path):
            file = open(file_path, "r")
            action = file.read()
            file.close()
            if action.startswith("show"):
                self.show()
            os.remove(file_path)
        self.timer.start(1000)

    def closeEvent(self, e: QCloseEvent):
        if self.settings.value("save_size", False, bool):
            size = self.size().width(), self.size().height()
            self.settings.setValue("window_size", size)
        if self.settings.value("sys_tray", True, bool):
            self.hide()
            e.ignore()
            return
        elif self.args.offline:
            pass
        self.signals.exit_app.emit(0)
        e.ignore()