#!/usr/bin/env python3

import sys
import os
import logging
import threading

import task_manager

APP_TITLE = "Org-mob"
DOCS_PATH = os.environ["ORG_PATH"]
STYLE_FILE_PATH = os.path.join(
    os.path.dirname(os.path.abspath(__file__)),
    "style.css")

MIN_TITLE_WIDTH_CHARS = 10

import gi

gi.require_version("Gtk", "4.0")
gi.require_version('Polkit', '1.0')
gi.require_version(namespace='Adw', version='1')

from gi.repository import Gtk, Polkit, GObject, Gio, Adw, Gdk

class MainWindow(Gtk.Window):

    ## Setup
    def __init__(self, *, title, application, task_manager, with_titlebar=True):
        super().__init__(title=title, application=application)
        self.application = application
        self.task_manager = task_manager
        self.loading = 0

        if with_titlebar:
            self.header_bar = Gtk.HeaderBar()
            # self.header_bar.set_show_close_button(True)
            # self.header_bar.props.title = APP_TITLE
            self.set_titlebar(self.header_bar)

            self.progress_spinner = Gtk.Spinner()
            self.progress_spinner.start()
            self.header_bar.pack_end(self.progress_spinner)
        else:
            self.header_bar = None
            self.progress_spinner = None

        # self.main_box = Gtk.Box(name='main-box', vexpand=True, hexpand=True)
        self.scrollview = Gtk.ScrolledWindow(vexpand=True, hexpand=True)

        self.task_list = Gtk.ListBox(name='task-list')
        self.scrollview.set_child(self.task_list)

        # self.main_box.props.valign = Gtk.Align.CENTER
        # self.main_box.props.halign = Gtk.Align.CENTER
        # self.main_box.append(self.scrollview)
        # self.set_child(self.main_box)
        self.set_child(self.scrollview)

        self.loading += 1
        self.task_manager.get_task_list(self.on_task_list_ready)

    ## Rendering
    def build_agenda_task_row(self, task):
        row = Gtk.ListBoxRow()
        hbox = Gtk.Box()

        state_button = Gtk.Button.new_with_label(task.state or '')
        state_button.props.css_classes = ('state-button',)
        state_button.connect("clicked", self.on_status_button_clicked)
        hbox.append(state_button)

        clock_button = Gtk.Button.new_with_label('C')
        clock_button.props.css_classes = ('clock-button',)
        clock_button.connect("clicked", self.on_clock_button_clicked)
        hbox.append(clock_button)

        # task_name_label = Gtk.Entry(text=task.title, width_chars=max(MIN_TITLE_WIDTH_CHARS, len(task.title)))
        task_name_label = Gtk.Label()
        task_name_label.set_text(task.title)
        task_name_label.props.css_classes = ('task-name',)
        hbox.append(task_name_label)

        row.set_child(hbox)

        return row 

    def on_ready(self):
        self.loading -= 1
        if self.loading < 0:
            self.loading = 0
        elif self.loading == 0:
            if self.progress_spinner is not None:
                self.progress_spinner.stop()

    ## Callbacks
    def on_task_list_ready(self, agenda):
        # TODO: Avoid reconstructing the whole list every time
        i = 0
        child = self.task_list.get_first_child()
        while child is not None:
            was = child
            child = child.get_next_sibling()
            i += 1
            self.task_list.remove(was)

        for item in agenda.with_hour:
            self.task_list.append(self.build_agenda_task_row(item))

        for item in agenda.no_hour:
            self.task_list.append(self.build_agenda_task_row(item))
        self.on_ready()

    ## Reactions
    def on_status_button_clicked(self, button):
        print('Status button clicked: {}'.format(button))

    def on_clock_button_clicked(self, button):
        print('Clock button clicked: {}'.format(button))


class Application(Gtk.Application):
    """ Main Aplication class """

    def __init__(self):
        super().__init__(application_id='com.codigoparallevar.gtk4-organizer',
                         flags=Gio.ApplicationFlags.FLAGS_NONE)
        self.task_manager = task_manager.TaskManager(DOCS_PATH)

    def do_activate(self):
        win = self.props.active_window
        if not win:
            if os.path.exists(STYLE_FILE_PATH):
                style_provider = Gtk.CssProvider()
                Gtk.StyleContext.add_provider_for_display(Gdk.Display.get_default(), style_provider, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
                style_provider.load_from_path(STYLE_FILE_PATH)

            win = MainWindow(
                title=APP_TITLE,
                application=self,
                task_manager=self.task_manager,
            )
            win.set_default_size(600, 400)

        win.present()


def main():
    """ Run the main application"""
    # GObject.threads_init()
    logging.basicConfig(level=logging.INFO, format="%(levelname)-8s %(message)s")
    app = Application()
    return app.run(sys.argv)


if __name__ == '__main__':
    main()