# progress.py
#
# Copyright 2022 mirkobrombin
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundationat version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import time
from gi.repository import Gtk, Gdk, Gio, GLib, Adw, Vte, Pango

from vanilla_first_setup.utils.run_async import RunAsync

from vanilla_first_setup.views.tour import VanillaTour


@Gtk.Template(resource_path='/io/github/vanilla-os/FirstSetup/gtk/progress.ui')
class VanillaProgress(Gtk.Box):
    __gtype_name__ = 'VanillaProgress'

    carousel_tour = Gtk.Template.Child()
    tour_button = Gtk.Template.Child()
    tour_box = Gtk.Template.Child()
    progressbar = Gtk.Template.Child()
    console_button = Gtk.Template.Child()
    console_box = Gtk.Template.Child()
    console_output = Gtk.Template.Child()
    
    def __init__(self, window, tour: dict, **kwargs):
        super().__init__(**kwargs)
        self.__window = window
        self.__tour = tour    
        self.__success_fn = None
        self.__terminal = Vte.Terminal()
        self.__font = Pango.FontDescription()
        self.__font.set_family("Ubuntu Mono")
        self.__font.set_size(13 * Pango.SCALE)
        self.__font.set_weight(Pango.Weight.NORMAL)
        self.__font.set_stretch(Pango.Stretch.NORMAL)

        self.__build_ui()

        self.tour_button.connect("clicked", self.__on_tour_button)
        self.console_button.connect("clicked", self.__on_console_button)

    def __on_tour_button(self, *args):
        self.tour_box.set_visible(True)
        self.console_box.set_visible(False)
        self.tour_button.set_visible(False)
        self.console_button.set_visible(True)

    def __on_console_button(self, *args):
        self.tour_box.set_visible(False)
        self.console_box.set_visible(True)
        self.tour_button.set_visible(True)
        self.console_button.set_visible(False)

    def __build_ui(self):
        self.__terminal.set_cursor_blink_mode(Vte.CursorBlinkMode.ON)
        self.__terminal.set_font(self.__font)
        self.__terminal.set_mouse_autohide(True)
        self.console_output.append(self.__terminal)
        self.__terminal.connect("child-exited", self.on_vte_child_exited)
        
        palette = ["#353535", "#c01c28", "#26a269", "#a2734c", "#12488b", "#a347ba", "#2aa1b3", "#cfcfcf", "#5d5d5d", "#f66151", "#33d17a", "#e9ad0c", "#2a7bde", "#c061cb", "#33c7de", "#ffffff"]
        
        FOREGROUND = palette[0]
        BACKGROUND = palette[15]
        FOREGROUND_DARK = palette[15]
        BACKGROUND_DARK = palette[0]
        
        self.fg = Gdk.RGBA()
        self.bg = Gdk.RGBA()

        self.colors = [Gdk.RGBA() for c in palette]
        [color.parse(s) for (color, s) in zip(self.colors, palette)]
        desktop_schema = Gio.Settings.new('org.gnome.desktop.interface')
        if desktop_schema.get_enum('color-scheme') == 0:
            self.fg.parse(FOREGROUND)
            self.bg.parse(BACKGROUND)
        elif desktop_schema.get_enum('color-scheme') == 1:
            self.fg.parse(FOREGROUND_DARK)
            self.bg.parse(BACKGROUND_DARK)
        self.__terminal.set_colors(self.fg, self.bg, self.colors)
        
        for _, tour in self.__tour.items():
            self.carousel_tour.append(VanillaTour(self.__window, tour))

        self.__start_tour()

    def __switch_tour(self, *args):
        cur_index = self.carousel_tour.get_position()
        page = self.carousel_tour.get_nth_page(cur_index + 1)

        if page is None:
            page = self.carousel_tour.get_nth_page(0)

        self.carousel_tour.scroll_to(page, True)

    def __start_tour(self):
        def run_async():
            while True:
                GLib.idle_add(self.progressbar.pulse)
                GLib.idle_add(self.__switch_tour)
                time.sleep(5)

        RunAsync(run_async, None)
    
    def on_vte_child_exited(self, terminal, status, *args):
        terminal.get_parent().remove(terminal)
        status = not bool(status)
        
        if self.__success_fn is not None and status:
            self.__success_fn()

        self.__window.set_installation_result(status, self.__terminal)

    def start(self, setup_commands, success_fn):
        self.__success_fn = success_fn
        self.__terminal.spawn_async(
            Vte.PtyFlags.DEFAULT,
            ".",
            setup_commands,
            [],
            GLib.SpawnFlags.DO_NOT_REAP_CHILD,
            None,
            None,
            -1,
            None,
            None
        )