from pathlib import Path

import dearpygui.dearpygui as dpg

from vrutil.dialogs import Dialogs
from vrutil.geproton import GeProtonSettings
from vrutil.gpu import GpuSettings
from vrutil.steamvr import SteamVrSettings
from vrutil.valveindex import ValeIndexSettings

_NO_STEAM_FOUND = 'No Steam installation found!'


def get_steam_dir():
    possible_paths = [
        '.local/share/Steam',
        '.steam/steam',
        '.steam/root'
    ]
    for path in possible_paths:
        candidate = (Path.home() / Path(path)).resolve()
        if candidate.exists():
            return str(candidate)
    return None


class MainWindow:
    """Main class managing the main application window"""

    def __init__(self):
        self._steam_dir = get_steam_dir()
        self._dialogs = Dialogs()
        self._gpu_settings = GpuSettings()
        self._steamvr_settings = SteamVrSettings(self._steam_dir)
        self._geproton_settings = GeProtonSettings(self._steam_dir, self._dialogs)
        self._valveindex_settings = ValeIndexSettings()
        self._steam_dir_item = None

    def create_window(self):
        self._dialogs.create_dialogs()

        with dpg.window() as main_window:
            with dpg.menu_bar():
                dpg.add_menu_item(label='Reload all', callback=self.reload_all)
                dpg.add_menu_item(label='About', callback=self._dialogs.show_about)
            dpg.add_text('Current Steam dir:')
            self._steam_dir_item = dpg.add_text(self._steam_dir or _NO_STEAM_FOUND)

            dpg.add_spacer(height=10)

            if self._steam_dir is not None:
                self._gpu_settings.create_views()
                self._steamvr_settings.create_views()
                self._geproton_settings.create_views()
                self._valveindex_settings.create_views()
        return main_window

    def reload_all(self):
        self._steam_dir = get_steam_dir()
        dpg.set_value(self._steam_dir_item, self._steam_dir or _NO_STEAM_FOUND)
        if self._steam_dir is None:
            self._dialogs.show_alert(
                title='Still no Steam found!',
                message='TODO: Allow custom location.',
                on_confirm=self._dialogs.hide,
            )
        else:
            self._gpu_settings.reload()
            self._steamvr_settings.reload(self._steam_dir)
            self._geproton_settings.reload_installed(self._steam_dir)
            self._geproton_settings.reload_available()
            self._valveindex_settings.reload()