from __future__ import annotations

from collections.abc import Callable
from typing import Protocol

from PySide6.QtCore import QObject
from PySide6.QtWidgets import QDialog

from bedit_gui.services.application_logging import get_logger, set_log_level
from bedit_gui.services.application_settings import ApplicationSettings
from bedit_gui.views.dialogs.settings_dialog import SettingsDialog
from bedit_gui.views.main_window import MainWindow

logger = get_logger(__name__)


class SettingsDialogLike(Protocol):
    @property
    def log_level(self) -> int: ...

    def exec(self) -> int: ...


SettingsDialogFactory = Callable[[int, MainWindow], SettingsDialogLike]


class SettingsController(QObject):
    """Opens the settings dialog and applies accepted preferences."""

    def __init__(
        self,
        window: MainWindow,
        settings: ApplicationSettings,
        dialog_factory: SettingsDialogFactory = SettingsDialog,
    ) -> None:
        super().__init__(window)
        self.window = window
        self.settings = settings
        self.dialog_factory = dialog_factory

        window.ui.actionSettings.triggered.connect(self.open_settings)

    def open_settings(self) -> None:
        dialog = self.dialog_factory(self.settings.log_level, self.window)
        if dialog.exec() != QDialog.DialogCode.Accepted:
            return

        self.settings.log_level = dialog.log_level
        set_log_level(dialog.log_level)
        logger.info("Application settings updated")