# Python imports

# Lib imports
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk

# Application imports


class QuerySelectorList(Gtk.Box):
    def __init__(self):
        super(QuerySelectorList, self).__init__()

        self._setup_styling()
        self._setup_signals()


    def _setup_styling(self):
        self.set_orientation(1)

    def _setup_signals(self):
        ...


class QueryController(Gtk.Popover):
    def __init__(self):
        super(QueryController, self).__init__()

        self._query_selector_list = QuerySelectorList()
        self.queryable_widgets    = []

        self._setup_styling()
        self._setup_signals()
        self._subscribe_to_events()
        self._load_widgets()


    def _setup_styling(self):
        self.set_position(3)
        self.set_size_request(256, 480)

    def _setup_signals(self):
        ...

    def _subscribe_to_events(self):
        event_system.subscribe("register_to_query_controller", self._register_to_query_controller)
        event_system.subscribe("handle_search_query", self._handle_search_query)

    def _load_widgets(self):
        scroll_win = Gtk.ScrolledWindow()
        viewport   = Gtk.Viewport()

        viewport.add(self._query_selector_list)
        scroll_win.add(viewport)
        self.add(scroll_win)

        scroll_win.show_all()

    def _register_to_query_controller(self, widget, provider):
        self.queryable_widgets.append([widget, provider])

    def _handle_search_query(self, widget, query):
        self.set_relative_to(widget)
        self.clear_children(self._query_selector_list)

        for _widget, collector in self.queryable_widgets:
            if query.lower() in collector().lower():
                path   = self.get_path_names(_widget)
                button = Gtk.Button(label=path)
                button.connect("button-release-event", self._focus_widget, _widget)
                self._query_selector_list.add(button)

        self._query_selector_list.show_all()
        self.show()

    def _focus_widget(self, widget = None, eve = None, target_widget = None):
        target_widget.show()
        target_widget.grab_focus()

    def clear_children(self, widget: type) -> None:
        for child in widget.get_children():
            widget.remove(child)

    def get_path_names(self, widget):
        i = 0
        while i < 15:
            i += 1
            if "page_widget.Page" in str(widget.__class__):
                return f"{widget.get_parent().get_parent()._name} > {widget._name}"
            else:
                widget = widget.get_parent()

        return None