// SPDX-License-Identifier: MPL-2.0-only

use gtk4::{
    gdk::Display,
    gio::{self, ApplicationFlags},
    glib::{self, MainContext, Priority},
    prelude::*,
    CssProvider, StyleContext,
};
use once_cell::sync::OnceCell;
use std::sync::{Arc, Mutex};
use tokio::sync::mpsc;
use utils::{Activate, WorkspaceEvent};
use wayland::State;
use window::CosmicWorkspacesWindow;
use calloop::channel::SyncSender;

mod localize;
mod utils;
mod wayland;
mod wayland_source;
mod window;
mod workspace_button;
mod workspace_list;
mod workspace_object;

const ID: &str = "com.system76.CosmicAppletWorkspaces";
static TX: OnceCell<SyncSender<WorkspaceEvent>> = OnceCell::new();

pub fn localize() {
    let localizer = crate::localize::localizer();
    let requested_languages = i18n_embed::DesktopLanguageRequester::requested_languages();

    if let Err(error) = localizer.select(&requested_languages) {
        eprintln!("Error while loading language for App List {}", error);
    }
}

fn load_css() {
    let provider = CssProvider::new();
    provider.load_from_resource("/com/System76/CosmicAppletWorkspaces/style.css");

    StyleContext::add_provider_for_display(
        &Display::default().unwrap(),
        &provider,
        gtk4::STYLE_PROVIDER_PRIORITY_APPLICATION,
    );
}

fn main() {
    // Initialize logger
    pretty_env_logger::init();
    glib::set_application_name(ID);

    localize();
    gio::resources_register_include!("compiled.gresource").unwrap();

    let app = gtk4::Application::new(Some(ID), ApplicationFlags::default());

    app.connect_activate(|app| {
        load_css();
        let (tx, rx) = MainContext::channel(Priority::default());

        let wayland_tx = wayland::spawn_workspaces(tx.clone());
        let window = CosmicWorkspacesWindow::new(app);

        TX.set(wayland_tx).unwrap();

        rx.attach(None, glib::clone!(@weak window => @default-return glib::prelude::Continue(true), move |workspace_event| {
            window.set_workspaces(workspace_event);
            glib::prelude::Continue(true)
        }));

        window.show();
    });
    app.run();
}