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Service layer for PDFsam
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/*
 * This file is part of the PDF Split And Merge source code
 * Created on 30/apr/2014
 * Copyright 2017 by Sober Lemur S.r.l. ([email protected]).
 *
 * 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 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 .
 */
package org.pdfsam.service.update;

import jakarta.inject.Inject;
import org.pdfsam.core.AppBrand;
import org.pdfsam.eventstudio.annotation.EventListener;
import org.pdfsam.injector.Auto;
import org.pdfsam.model.update.NoUpdateAvailable;
import org.pdfsam.model.update.UpdateAvailableEvent;
import org.pdfsam.model.update.UpdateCheckRequest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static org.apache.commons.lang3.StringUtils.isNotBlank;
import static org.pdfsam.core.BrandableProperty.VERSION;
import static org.pdfsam.eventstudio.StaticStudio.eventStudio;
import static org.pdfsam.i18n.I18nContext.i18n;

/**
 * Component listening for updates related requests
 *
 * @author Andrea Vacondio
 */
@Auto
public class UpdatesController {
    private static final Logger LOG = LoggerFactory.getLogger(UpdatesController.class);

    private final AppBrand appBrand;
    private final UpdateService service;

    @Inject
    UpdatesController(UpdateService service, AppBrand appBrand) {
        this.service = service;
        this.appBrand = appBrand;
        eventStudio().addAnnotatedListeners(this);
    }

    @EventListener
    public void checkForUpdates(UpdateCheckRequest event) {
        Thread.ofVirtual().name("updates-checker-thread").start(() -> {
            LOG.debug(i18n().tr("Checking for updates"));
            try {
                var currentVersion = service.getLatestVersion();
                if (isNotBlank(currentVersion)) {
                    if (!appBrand.property(VERSION).equals(currentVersion)) {
                        LOG.info(i18n().tr("PDFsam {0} is available for download", currentVersion));
                        eventStudio().broadcast(new UpdateAvailableEvent(currentVersion));
                    } else if (event.notifyIfNoUpdates()) {
                        eventStudio().broadcast(new NoUpdateAvailable());
                    }
                }
            } catch (Exception e) {
                LOG.warn(i18n().tr("Unable to find the latest available version."), e);
            }
        });
    }
}