#! python3
# -*- coding: utf-8 -*-
# SPDX-License-Identifier: AGPL-3.0-or-later
# Copyright (C) 2026 Karim Gabriele Varano
"""
begin_cmd_hook.py
Hook auf Rhino.Commands.Command.BeginCommand. Wenn der User ein Drawing-
Command startet (Line, Polyline, Rectangle, Circle etc.), oeffnen wir
automatisch das DOSSIER-Gestaltung-Panel und bringen es in den Vordergrund.

Idempotent — Re-Install nach _reset_panels deregistriert alten Handler.
"""
import Rhino
import scriptcontext as sc
import System


# Commands bei denen wir Gestaltung-Panel fokussieren.
# CommandEnglishName ohne Underscore-Prefix.
_DRAWING_COMMANDS = {
    "Line", "Polyline", "Curve", "InterpCrv",
    "Arc", "Circle", "Ellipse",
    "Rectangle", "Polygon",
    "Hatch", "Text",
    "Point", "Points",
    "InfiniteLine",
}

_GESTALTUNG_PANEL_GUID = "4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829"
_HANDLER_KEY = "_dossier_begin_cmd_handler"
_VERBOSE_KEY = "_dossier_begin_cmd_verbose"


def _on_begin_command(sender, e):
    try:
        cmd = getattr(e, "CommandEnglishName", "") or ""
        if sc.sticky.get(_VERBOSE_KEY):
            print("[BEGIN-CMD] cmd='{}'".format(cmd))
        if cmd not in _DRAWING_COMMANDS: return
        try:
            guid = System.Guid(_GESTALTUNG_PANEL_GUID)
            Rhino.UI.Panels.OpenPanel(guid)
            try:
                Rhino.UI.Panels.FocusPanel(guid)
            except Exception: pass
            if sc.sticky.get(_VERBOSE_KEY):
                print("[BEGIN-CMD] Gestaltung-Panel geoeffnet/fokussiert")
        except Exception as ex:
            print("[BEGIN-CMD] OpenPanel:", ex)
            try:
                Rhino.RhinoApp.RunScript(
                    '-_ShowPanel "DOSSIER Gestaltung"', False)
            except Exception: pass
    except Exception as ex:
        print("[BEGIN-CMD] handler:", ex)


def install(verbose=False):
    """Einmalige Registrierung. Bei Re-Install (z.B. nach _reset_panels)
    wird der alte Handler-Ref aus sc.sticky deregistriert."""
    old = sc.sticky.get(_HANDLER_KEY)
    if old is not None:
        try: Rhino.Commands.Command.BeginCommand -= old
        except Exception: pass
    try:
        Rhino.Commands.Command.BeginCommand += _on_begin_command
        sc.sticky[_HANDLER_KEY] = _on_begin_command
        sc.sticky[_VERBOSE_KEY] = bool(verbose)
        print("[BEGIN-CMD] Hook installed (verbose={})".format(bool(verbose)))
    except Exception as ex:
        print("[BEGIN-CMD] install:", ex)


def set_verbose(flag):
    sc.sticky[_VERBOSE_KEY] = bool(flag)


if __name__ == "__main__":
    install(verbose=True)