"""
This file is part of the SplendidBear Websites' projects.

Copyright (c) 2026 @ www.splendidbear.org

For the full copyright and license information, please view the LICENSE
file that was distributed with this source code.
"""

from __future__ import annotations

import gi
gi.require_version("Gtk", "4.0")
gi.require_version("Adw", "1")
from gi.repository import Gtk, Adw

from mineseeker.ui.login_page import LoginPage
from mineseeker.ui.totp_page import TotpPage
from mineseeker.ui.lobby_page import LobbyPage
from mineseeker.ui.game_page import GamePage


class AppWindow(Adw.ApplicationWindow):
    """
    Main application window containing a Gtk.Stack that navigates between:
      - "login"  : LoginPage
      - "totp"   : TotpPage
      - "lobby"  : LobbyPage
      - "game"   : GamePage (replaced on each new game)
    """

    def __init__(self, application: Adw.Application) -> None:
        super().__init__(application=application)
        self.set_title("MineSeeker")
        self.set_default_size(980, 680)

        # Stack — child names serve as page IDs
        self._stack = Gtk.Stack()
        self._stack.set_transition_type(Gtk.StackTransitionType.CROSSFADE)
        self._stack.set_transition_duration(200)

        # Build pages
        self._login_page = LoginPage(on_success=self._on_login_success, on_guest=self._on_guest)
        self._totp_page = TotpPage(on_success=self._on_totp_success, on_back=self._show_login)
        self._lobby_page = LobbyPage(on_game_start=self._on_game_start)
        self._game_page: GamePage | None = None

        self._stack.add_named(self._login_page, "login")
        self._stack.add_named(self._totp_page, "totp")
        self._stack.add_named(self._lobby_page, "lobby")

        # Wrap in a NavigationView-style container using Adw.ToolbarView
        toolbar_view = Adw.ToolbarView()
        header = Adw.HeaderBar()
        toolbar_view.add_top_bar(header)
        toolbar_view.set_content(self._stack)

        self.set_content(toolbar_view)

        # Start on the login page
        self._stack.set_visible_child_name("login")

    # ------------------------------------------------------------------
    # Navigation helpers
    # ------------------------------------------------------------------

    def _show_login(self) -> None:
        self._stack.set_visible_child_name("login")

    def _show_totp(self) -> None:
        self._stack.set_visible_child_name("totp")

    def _show_lobby(self) -> None:
        self._lobby_page.refresh()
        self._stack.set_visible_child_name("lobby")

    # ------------------------------------------------------------------
    # Callbacks from child pages
    # ------------------------------------------------------------------

    def _on_login_success(self, needs_totp: bool) -> None:
        if needs_totp:
            self._show_totp()
        else:
            self._show_lobby()

    def _on_guest(self) -> None:
        self._show_lobby()

    def _on_totp_success(self) -> None:
        self._show_lobby()

    def _on_game_start(self, game_assoc: str, mercure_jwt: str, color: str) -> None:
        """Replace or create the GamePage and switch to it."""
        # Remove previous game page if present
        if self._game_page is not None:
            self._stack.remove(self._game_page)

        self._game_page = GamePage(
            game_assoc=game_assoc,
            mercure_jwt=mercure_jwt,
            color=color,
            on_leave=self._on_game_leave,
        )
        self._stack.add_named(self._game_page, "game")
        self._stack.set_visible_child_name("game")

    def _on_game_leave(self) -> None:
        self._show_lobby()