from gi.repository import Gtk, Adw, Gio, Gdk
from material_color_utilities_python import *
from .constants import rootdir
import threading
import time
from .run_async import RunAsync


@Gtk.Template(resource_path=f"{rootdir}/ui/welcome.ui")
class GradienceWelcomeWindow(Adw.Window):
    __gtype_name__ = "GradienceWelcomeWindow"

    settings = Gtk.Settings.get_default()

    carousel = Gtk.Template.Child()
    btn_close = Gtk.Template.Child()
    btn_back = Gtk.Template.Child()
    btn_next = Gtk.Template.Child()
    btn_install = Gtk.Template.Child()
    progressbar = Gtk.Template.Child()
    page_welcome = Gtk.Template.Child()
    page_gradience = Gtk.Template.Child()
    page_configure = Gtk.Template.Child()
    page_download = Gtk.Template.Child()
    page_finish = Gtk.Template.Child()
    img_welcome = Gtk.Template.Child()
    label_skip = Gtk.Template.Child()

    carousel_pages = [
        "welcome",
        "gradience",
        "configure",
        "download",
        "finish"
    ]
    images = [
        f"{rootdir}/images/welcome.svg",
        f"{rootdir}/images/welcome-night.svg",
    ]

    def __init__(self, window, **kwargs) -> None:
        super().__init__(**kwargs)
        self.set_transient_for(window)

        # common variables and references
        self.window = window

        # connect signals
        self.connect("close-request", self.quit)
        self.carousel.connect('page-changed', self.page_changed)
        self.btn_close.connect("clicked", self.close_window)
        self.btn_back.connect("clicked", self.previous_page)
        self.btn_next.connect("clicked", self.next_page)
        self.btn_install.connect("clicked", self.install_runner)
        self.settings.connect(
            "notify::gtk-application-prefer-dark-theme",
            self.theme_changed)

        self.btn_close.set_sensitive(False)

        if self.settings.get_property("gtk-application-prefer-dark-theme"):
            self.img_welcome.set_from_resource(self.images[1])

        self.page_changed()

    def theme_changed(self, settings, key):
        self.img_welcome.set_from_resource(
            self.images[settings.get_property("gtk-application-prefer-dark-theme")])

    def get_page(self, index):
        return self.carousel_pages[index]

    def page_changed(self, widget=False, index=0, *_args):
        """
        This function is called on first load and when the user require
        to change the page. It sets the widgets' status according to
        the step of the onboard progress.
        """
        page = self.get_page(index)

        if page == "finish":
            self.btn_back.set_visible(False)
            self.btn_next.set_visible(False)
        elif page == "download":
            self.btn_back.set_visible(True)
            self.btn_next.set_visible(False)
            self.btn_install.set_visible(True)
        elif page == "welcome":
            self.btn_back.set_visible(False)
            self.btn_next.set_visible(True)
        else:
            self.btn_back.set_visible(True)
            self.btn_next.set_visible(True)

    @staticmethod
    def quit(widget=False):
        quit()

    def install_runner(self, widget):
        def set_completed(result, error=False):
            self.label_skip.set_visible(False)
            self.btn_close.set_sensitive(True)
            self.window.settings.set_boolean("first-run", False)
            self.next_page()

        self.installing = True
        self.btn_back.set_visible(False)
        self.btn_next.set_visible(False)
        self.btn_install.set_visible(False)
        self.progressbar.set_visible(True)
        self.carousel.set_allow_long_swipes(False)
        self.carousel.set_allow_mouse_drag(False)
        self.carousel.set_allow_scroll_wheel(False)
        self.set_deletable(False)

        def install():
            for i in range(4):
                print("install in progress")
                time.sleep(0.2)

        RunAsync(self.pulse)
        RunAsync(
            install,
            callback=set_completed,
        )

    def previous_page(self, widget=False):
        index = int(self.carousel.get_position())
        previous_page = self.carousel.get_nth_page(index - 1)
        self.carousel.scroll_to(previous_page, True)

    def next_page(self, widget=False):
        index = int(self.carousel.get_position())
        next_page = self.carousel.get_nth_page(index + 1)
        self.carousel.scroll_to(next_page, True)

    def pulse(self):
        # This function update the progress bar every 1s.
        while True:
            time.sleep(.5)
            self.progressbar.pulse()

    def close_window(self, widget):
        self.destroy()
        self.window.present()