// Map, wardley map editor for linux
// Copyright (C) 2026 Rubén Beltrán del Río

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// 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 Affero General Public License for more details.

// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
use std::convert::identity;

use adw::prelude::*;
use relm4::prelude::*;

use crate::actions::Action;
use crate::components::header::HeaderAction;
use crate::components::preferences_window::PreferencesWindow;
use crate::file_registry;
use crate::preferences::{UserPreferences, storage};

use crate::AppModel;

/// Shows the preferences window.
pub fn show(model: &mut AppModel, sender: &ComponentSender<AppModel>) {
    if model.preferences_window.is_none() {
        let controller = PreferencesWindow::builder()
            .transient_for(&model.window)
            .launch(model.preferences.clone())
            .forward(sender.input_sender(), identity);
        model.preferences_window = Some(controller);
    }
    if let Some(ref controller) = model.preferences_window {
        controller.widget().present();
    }
}

/// Closes the preferences window.
pub fn close(model: &mut AppModel) {
    model.preferences_window = None;
}

/// Closes and reopens the preferences window.
pub fn reload_window(model: &mut AppModel, sender: &ComponentSender<AppModel>) {
    if let Some(controller) = model.preferences_window.take() {
        controller.widget().destroy();
    }
    model.preferences_window = None;
    show(model, sender);
}

/// Reloads the preferences.
pub fn reload(model: &mut AppModel) {
    model.preferences = storage::load();
    model.apply_preferences();
    model.header.emit(HeaderAction::SetCustomStages(
        model.preferences.custom_stages.clone(),
    ));
    model.header.emit(HeaderAction::SetCustomStages(
        model.preferences.custom_stages.clone(),
    ));
    model.header.emit(HeaderAction::SetTemplates(
        model.preferences.map_templates.clone(),
    ));
    model.update_image();
}

/// Updates preferences after they change.
pub fn update(model: &mut AppModel, preferences: UserPreferences) {
    model.preferences = preferences;
    model.apply_preferences();
    model.header.emit(HeaderAction::SetCustomStages(
        model.preferences.custom_stages.clone(),
    ));
    model.header.emit(HeaderAction::SetTemplates(
        model.preferences.map_templates.clone(),
    ));
    model.update_image();
    file_registry::broadcast_to_all_windows(&Action::ReloadPreferences);
}