# Copyright 2022 (c) Anna Schumaker.
"""A custom Adw.Window configured for our application."""
from gi.repository import GObject
from gi.repository import Gtk
from gi.repository import Adw


def _make_pane(orientation: Gtk.Orientation,
               start_child: Gtk.Widget = None,
               end_child: Gtk.Widget = None) -> Gtk.Paned:
    pane = Gtk.Paned(orientation=orientation, hexpand=True, vexpand=True,
                     shrink_start_child=False, resize_start_child=False,
                     start_child=start_child, end_child=end_child)
    pane.add_css_class("emmental-pane")
    return pane


class Window(Adw.Window):
    """Our custom Adw.Window.

    Our Window is configured with 4 regions for widgets:
        * An area to place a CSD header bar
        * An area for a sidebar
        * An area to show now-playing information
        * An area to display a tracklist
    """

    header = GObject.Property(type=Gtk.Widget)
    sidebar = GObject.Property(type=Gtk.Widget)
    now_playing = GObject.Property(type=Gtk.Widget)
    tracklist = GObject.Property(type=Gtk.Widget)

    def __init__(self, version: str, **kwargs):
        """Initialize our Window."""
        super().__init__(icon_name="emmental", title=version,
                         default_width=1600, default_height=900, **kwargs)
        self._box = Gtk.Box.new(Gtk.Orientation.VERTICAL, 0)
        self._header = Adw.Bin(child=self.header)
        self._inner_pane = _make_pane(Gtk.Orientation.VERTICAL,
                                      start_child=self.now_playing,
                                      end_child=self.tracklist)
        self._outer_pane = _make_pane(Gtk.Orientation.HORIZONTAL,
                                      start_child=self.sidebar,
                                      end_child=self._inner_pane)
        self._toast = Adw.ToastOverlay(child=self._outer_pane)

        self._outer_pane.add_css_class("emmental-padding")
        if __debug__:
            self.add_css_class("devel")

        self.bind_property("header", self._header, "child")
        self.bind_property("sidebar", self._outer_pane, "start-child")
        self.bind_property("now-playing", self._inner_pane, "start-child")
        self.bind_property("tracklist", self._inner_pane, "end-child")

        self._box.append(self._header)
        self._box.append(self._toast)
        self.set_content(self._box)

    def close(self, *args) -> None:
        """Close the window."""
        super().close()

    def post_toast(self, title: str) -> Adw.Toast:
        """Create a new Adw.Toas and add it to the window."""
        toast = Adw.Toast.new(title)
        self._toast.add_toast(toast)
        return toast

    def present(self, *args) -> None:
        """Present the window."""
        super().present()