import logging
import os.path
import sys
from typing import Dict, List

from PyQt6 import QtWidgets
from PyQt6.QtCore import Qt
from PyQt6.QtGui import QStandardItemModel, QStandardItem

from window.mod_manager_window_export import Ui_MainWindow


class MainWindow(QtWidgets.QMainWindow):

    def __init__(self, parent, parent_logger: logging.Logger, version: str = ""):
        super(MainWindow, self).__init__()
        self.parent = parent
        self.__logger = logging.getLogger("MainWindow")
        for handler in parent_logger.handlers:
            self.__logger.addHandler(handler)
        self.__logger.setLevel(parent_logger.level)

        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

        self.setWindowTitle(f"LC Mod Manager {version}")

        self.ui.actionAdd_new_mod.triggered.connect(self.on_action_add_new_mod)
        self.ui.actionrefresh_mods.triggered.connect(self.on_action_refresh_mods)
        self.ui.actionCheck_for_Updates.triggered.connect(self.on_action_check_for_updates)
        self.ui.actionSet_game_folder.triggered.connect(self.on_action_set_game_folder)
        self.ui.actionRemove_ALL_manager_files.triggered.connect(self.on_action_remove_all_files)

        self.ui.DeleteModFilesButton.pressed.connect(self.on_pressed_delete_mod_files_button)
        self.ui.ApplyChangesButton.pressed.connect(self.on_pressed_apply_changes_button)
        self.ui.DisacrdChangesButton.pressed.connect(self.on_pressed_discard_changes_button)

        self.ui.TODOButton.hide()
        self.ui.ApplyChangesButton.hide()
        self.ui.DisacrdChangesButton.hide()
        self.ui.DeleteModFilesButton.hide()

        self.ui.actionCheck_for_Updates.setDisabled(True)

    def set_available_mods(self, available_mods: Dict[str, str]):
        """
        Sets the given mods as the list of available mods
        :param available_mods:
        :return:
        """
        item_model = QStandardItemModel(self.ui.AvailableModsList)
        for mod_name in available_mods.keys():
            item = QStandardItem(mod_name + f" ({available_mods[mod_name]['version']})")
            item.setFlags(Qt.ItemFlag.ItemIsUserCheckable | Qt.ItemFlag.ItemIsEnabled)
            item.setData(Qt.CheckState.Unchecked, Qt.ItemDataRole.CheckStateRole)
            item.setData(mod_name, Qt.ItemDataRole.UserRole)

            item_model.appendRow(item)
            if self.parent.is_mod_installed(mod_name):
                item.setCheckState(Qt.CheckState.Checked)

        item_model.itemChanged.connect(self.on_available_mod_item_changed)
        self.ui.AvailableModsList.setModel(item_model)

    def set_installed_mods(self, installed_mods: Dict[str, str]):
        """
        Sets the given mods as the list of installed mods
        :param installed_mods: string list of all the mods as to be written to the list
        :return:
        """
        item_model = QStandardItemModel(self.ui.InstalledModsListView)
        for mod_name in installed_mods.keys():
            if mod_name in self.parent.available_mods.keys():
                mod_version = self.parent.available_mods[mod_name]['version']
            else:
                mod_version = "Not Tracked"
            item = QStandardItem(mod_name + f" ({mod_version})")
            item.setFlags(Qt.ItemFlag.ItemIsUserCheckable | Qt.ItemFlag.ItemIsEnabled)
            item.setData(Qt.CheckState.Unchecked, Qt.ItemDataRole.CheckStateRole)
            item.setData(mod_name, Qt.ItemDataRole.UserRole)

            item_model.appendRow(item)
            item.setCheckState(Qt.CheckState.Checked)

        item_model.itemChanged.connect(self.on_installed_mod_item_changed)
        self.ui.InstalledModsListView.setModel(item_model)

    # UI Callback functions
    ## Actions
    def on_action_add_new_mod(self):
        self.__logger.debug("Action: \"add new mod\" triggered!")
        dialog = QtWidgets.QFileDialog(self, "Select Lethal Company mod")
        dialog.setFileMode(QtWidgets.QFileDialog.FileMode.ExistingFiles)

        result = dialog.getOpenFileName(filter='ZIP (*.zip)')
        self.__logger.debug(f"user selected \"{result[0]}\"")
        if not os.path.isfile(result[0]):
            dialog = QtWidgets.QMessageBox()
            dialog.setWindowTitle("Not a file")
            dialog.setInformativeText(f"The given file \"{result}\" did not look like a file!")
            dialog.setIcon(QtWidgets.QMessageBox.Icon.Warning)
            dialog.exec()
        if not self.parent.is_valid_mod_file(result[0]):
            dialog = QtWidgets.QMessageBox()
            dialog.setWindowTitle("Not a valid mod file")
            dialog.setInformativeText(
                f"The given file \"{result}\" did not look like a mod file. Is the manifest.json present?")
            dialog.setIcon(QtWidgets.QMessageBox.Icon.Warning)
            dialog.exec()

        self.parent.add_mod_file(result[0])

    def on_action_refresh_mods(self):
        self.__logger.debug("Action: \"refresh mods\" triggered!")
        self.parent.index_stored_mods()
        self.parent.index_installed_mods()

    def on_action_check_for_updates(self):
        self.__logger.debug("Action: \"check for updates\" triggered!")

    def on_action_set_game_folder(self):
        self.__logger.debug("Action: \"set game folder\" triggered!")
        dialog = QtWidgets.QFileDialog(self, "Select Lethal Company folder")
        dialog.setFileMode(QtWidgets.QFileDialog.FileMode.Directory)
        dialog.setOptions(QtWidgets.QFileDialog.Option.ShowDirsOnly)

        result = dialog.getExistingDirectory()
        dir_accepted = self.parent.set_game_folder(result)

        attempt = 0
        while not dir_accepted:
            attempt += 1
            dialog = QtWidgets.QMessageBox()
            dialog.setWindowTitle("Invalid game path")
            dialog.setInformativeText(f"The given path \"{result}\" did not look like the Lethal Company game folder!\n"
                                      f"If you can't find it. Try using steam and select \"browse local files\"!")
            dialog.setIcon(QtWidgets.QMessageBox.Icon.Warning)
            dialog.exec()

            dialog = QtWidgets.QFileDialog(self, "Select Lethal Company folder")
            dialog.setFileMode(QtWidgets.QFileDialog.FileMode.Directory)
            dialog.setOptions(QtWidgets.QFileDialog.Option.ShowDirsOnly)

            result = dialog.getExistingDirectory()
            dir_accepted = self.parent.set_game_folder(result)
            if attempt > 2:
                return

    def on_action_remove_all_files(self):
        self.__logger.debug("Action: \"remove all manager files\" triggered!")
        self.parent.nuke_manager_files()

    ## Buttons

    def on_pressed_delete_mod_files_button(self):
        self.__logger.debug("Pressed button: \"Delete Mod Files\"")
        raise NotImplementedError

    def on_pressed_apply_changes_button(self):
        self.__logger.debug("Pressed button: \"Apply Changes\"")
        raise NotImplementedError

    def on_pressed_discard_changes_button(self):
        self.__logger.debug("Pressed button: \"Discard Changes\"")
        raise NotImplementedError

    def on_available_mod_item_changed(self, item: QStandardItem):
        self.__logger.debug(f"Available Mod list item \"{item.text()}\" changed to {item.checkState()}")
        mod_name = item.data(Qt.ItemDataRole.UserRole)
        if item.checkState() == Qt.CheckState.Checked:
            self.parent.install_mod(mod_name)
        elif item.checkState() == Qt.CheckState.Unchecked:
            self.parent.uninstall_mod(mod_name)

    def on_installed_mod_item_changed(self, item: QStandardItem):
        self.__logger.debug(f"Installed Mod list item \"{item.text()}\" changed to {item.checkState()}")
        mod_name = item.data(Qt.ItemDataRole.UserRole)
        if item.checkState() == Qt.CheckState.Unchecked:  # mod should be uninstalled
            accepted = QtWidgets.QMessageBox.question(self, "Really uninstall mod?",
                                                      f"Do you really want to uninstall the mod \"{mod_name}\"?\n"
                                                      "This could lead to permanent data loss if it wasn't tracked!")
            if accepted:
                self.parent.uninstall_mod(mod_name)
            else:
                return