# Python imports

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

# Application imports
from mixins.tree_nixin import TreeMixin



class ImagesList(TreeMixin, Gtk.ScrolledWindow):
    def __init__(self):
        super(ImagesList, self).__init__()

        self._tree_view   = None
        self._store       = None
        self._dir_watcher = None
        self._watch_dir   = None

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

        self.show_all()


    def _setup_styling(self):
        self.set_size_request(200, -1)
        self.set_hexpand(False)
        self.set_vexpand(True)
        self.set_margin_top(15)

    def _setup_signals(self):
        ...

    def _subscribe_to_events(self):
        ...

    def _load_widgets(self):
        scroll, self._store = self._create_treeview_widget("Images")

        self._tree_view = scroll.get_children()[0]
        self._tree_view.connect("button-press-event", self._handle_clicks)
        self._tree_view.connect("row-activated", self._set_active_image)

        self._tree_view.set_property("activate-on-single-click", True)

        self.referesh_directory_list()
        self.add(scroll)

    def _set_file_watcher(self):
        if settings.is_debug():
            logger.debug(f"Watcher Will Not Be Set...")
            return

        images_dir        = settings.get_screenshots_dir()
        self._watch_dir   = Gio.File.new_for_uri(f"file://{images_dir}")
        self._dir_watcher = self._watch_dir.monitor_directory(Gio.FileMonitorFlags.WATCH_MOVES, Gio.Cancellable())

        self._dir_watcher.connect("changed", self._dir_watch_updates, ())

    def _dir_watch_updates(self, file_monitor, file, other_file = None, eve_type = None, data = None):
        if eve_type in [Gio.FileMonitorEvent.CREATED, Gio.FileMonitorEvent.DELETED,
                        Gio.FileMonitorEvent.RENAMED, Gio.FileMonitorEvent.MOVED_IN,
                        Gio.FileMonitorEvent.MOVED_OUT]:

            self._store.clear()
            self.referesh_directory_list()

    def _set_active_image(self, tree_view = None, path = None, column = None):
        file = self.get_selected()
        event_system.emit("set_image_to_view", (file,))
        event_system.emit("set_revert_data", (file,))

    def _handle_clicks(self, widget = None, eve = None):
        if eve.button == 1 and eve.type == 5:
            file = self.get_selected()
            event_system.emit("set_revert_data", (file,))
            event_system.emit("open_file")
            return

        if eve.button == 1 and eve.type == 4:
            self._set_active_image()
            return

        if eve.button == 3:
            file = self.get_selected()

            event_system.emit("set_revert_data", (file,))
            event_system.emit("show_menu", (file,))
            return

    @threaded
    def referesh_directory_list(self):
        images = settings.get_directory_list()
        images.sort()
        for image in images:
            GLib.idle_add(self.add_to_store, (image,))

    def add_to_store(self, image):
        self._store.append(image)

    def get_selected(self):
        model, treeiter = self._tree_view.get_selection().get_selected()
        if treeiter != None:
            return model[treeiter][0]

        return None