from __future__ import annotations

import sys
import argparse

from PySide6.QtWidgets import QApplication, QMessageBox

from bedit_gui.controllers.clipboard_controller import ClipboardController, DocumentTreeClipboardHandler, GraphEditorClipboardHandler, TextClipboardHandler
from bedit_gui.controllers.document_controller import DocumentController
from bedit_gui.controllers.log_controller import LogController
from bedit_gui.controllers.library_controller import LibraryController
from bedit_gui.controllers.settings_controller import SettingsController
from bedit_gui.controllers.simulation_settings_controller import SimulationSettingsController
from bedit_gui.controllers.simulation_controller import SimulationController
from bedit_gui.controllers.undo_controller import UndoController
from bedit_gui.controllers.view_menu_controller import ViewMenuController
from bedit_gui.controllers.window_state_controller import WindowStateController
from bedit_gui.controllers.document_tree_controller import DocumentTreeController
from bedit_gui.documents import Document
from bedit_gui.services.application_settings import ApplicationSettings
from bedit_gui.services.clipboard import ClipboardService
from bedit_gui.views.main_window import MainWindow
from bedit_gui.versions import BEDIT_VERSION

def parse_arguments():
    parser = argparse.ArgumentParser(exit_on_error=False)

    parser.add_argument(
        "-f", "--file", type=str, help="Path to a file to open", default=None, required=False
    )
    parser.add_argument("--version", action="version", version=f"BEdit {BEDIT_VERSION}")

    return parser.parse_args()

def main() -> int:
    try:
        args = parse_arguments()
    except argparse.ArgumentError as e:
        print(e.message)
        return 1

    app = QApplication(sys.argv)

    app.setOrganizationName("BEdit")
    app.setApplicationName("BEdit")
    app.setApplicationVersion(BEDIT_VERSION)

    settings = ApplicationSettings()
    document = Document(app)
    window = MainWindow(settings.snap_to_grid_size)
    window.ui.actionAbout.triggered.connect(lambda: QMessageBox.about(window, "About BEdit", f"BEdit {BEDIT_VERSION}"))
    window.ui.actionAbout_QT.triggered.connect(app.aboutQt)

    LogController(window, settings.log_level)
    DocumentController(document, window)
    settings_controller = SettingsController(window, settings)
    SimulationSettingsController(document, window)
    SimulationController(document, window)
    UndoController(document, window)
    ViewMenuController(window)
    document_tree_controller = DocumentTreeController(document, window)
    library_controller = LibraryController(window, settings)
    settings_controller.library_paths_changed.connect(library_controller.reload)
    clipboard = ClipboardService(app)
    ClipboardController(window, clipboard, [TextClipboardHandler(clipboard), DocumentTreeClipboardHandler(document, window.ui.documentTree, document_tree_controller.model, clipboard), GraphEditorClipboardHandler(document, window.graph_editor, clipboard)])

    window_state_controller = WindowStateController(app, window)
    window_state_controller.restore()

    if args.file:
        document.open(args.file)
    else:
        document.new()

    window.showMaximized()

    return app.exec()