#!/usr/bin/env python3
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#

from gi.repository import Gtk, Gio, GLib

from .setupdialog import SetupDialog
from .drawingperspective import DrawingPerspective
from .errorperspective import ErrorPerspective
from .tuhi import TuhiKeteManager
from .config import Config

import logging
import gi
gi.require_version("Gtk", "3.0")

logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger('window')

MENU_XML = """
<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <menu id="primary-menu">
  <section>
      <item>
        <attribute name="label">Portrait</attribute>
        <attribute name="action">win.orientation</attribute>
        <attribute name="target">portrait</attribute>
      </item>
      <item>
        <attribute name="label">Landscape</attribute>
        <attribute name="action">win.orientation</attribute>
        <attribute name="target">landscape</attribute>
      </item>
  </section>
  <section>
      <item>
        <attribute name="label">Help</attribute>
        <attribute name="action">app.help</attribute>
      </item>
      <item>
        <attribute name="label">About</attribute>
        <attribute name="action">app.about</attribute>
      </item>
    </section>
  </menu>
</interface>
"""


@Gtk.Template(resource_path='/org/freedesktop/TuhiGui/ui/MainWindow.ui')
class MainWindow(Gtk.ApplicationWindow):
    __gtype_name__ = 'MainWindow'

    stack_perspectives = Gtk.Template.Child()
    headerbar = Gtk.Template.Child()
    menubutton1 = Gtk.Template.Child()

    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        self._tuhi = TuhiKeteManager()

        action = Gio.SimpleAction.new_stateful('orientation', GLib.VariantType('s'),
                                               GLib.Variant('s', 'landscape'))
        action.connect('activate', self._on_orientation_changed)
        action.set_state(GLib.Variant.new_string(Config.load().orientation))
        self.add_action(action)

        builder = Gtk.Builder.new_from_string(MENU_XML, -1)
        menu = builder.get_object("primary-menu")
        self.menubutton1.set_menu_model(menu)

        ep = ErrorPerspective()
        self._add_perspective(ep)
        self.stack_perspectives.set_visible_child_name(ep.name)

        # the dbus bindings need more async...
        if not self._tuhi.online:
            self._tuhi.connect('notify::online', self._on_dbus_online)
        else:
            self._on_dbus_online()

    def _on_dbus_online(self, *args, **kwargs):
        logger.debug('dbus is online')

        dp = DrawingPerspective()
        self._add_perspective(dp)
        active = dp
        self.headerbar.set_title(f'Tuhi')
        self.stack_perspectives.set_visible_child_name(active.name)

        if not self._tuhi.devices:
            dialog = SetupDialog(self._tuhi)
            dialog.set_transient_for(self)
            dialog.connect('response', self._on_setup_dialog_closed)
            dialog.show()
        else:
            dp.device = self._tuhi.devices[0]
            active = dp
            self.headerbar.set_title(f'Tuhi - {dp.device.name}')

    def _on_setup_dialog_closed(self, dialog, response):
        device = dialog.device
        dialog.destroy()

        if response != Gtk.ResponseType.OK or device is None:
            self.destroy()
            return

        logger.debug('device was registered')
        self.headerbar.set_title(f'Tuhi - {device.name}')

        dp = self._get_child('drawing_perspective')
        dp.device = device
        self.stack_perspectives.set_visible_child_name(dp.name)

    def _add_perspective(self, perspective):
        self.stack_perspectives.add_named(perspective, perspective.name)

    def _get_child(self, name):
        return self.stack_perspectives.get_child_by_name(name)

    def _on_reconnect_tuhi(self, tuhi):
        self._tuhi = tuhi

    def _on_orientation_changed(self, action, label):
        action.set_state(label)
        Config.load().orientation = label.get_string()  # this is a GVariant