/*
 * Copyright 2012-2015 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat 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 Foundation; either version 2, or (at your
 * option) any later version.
 *
 * Thermostat 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 Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.client.swing.internal.osgi;

import java.util.Map;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;

import com.redhat.thermostat.client.core.views.AgentInformationViewProvider;
import com.redhat.thermostat.client.core.views.ClientConfigViewProvider;
import com.redhat.thermostat.client.core.views.HostInformationViewProvider;
import com.redhat.thermostat.client.core.views.VersionAndInfoViewProvider;
import com.redhat.thermostat.client.core.views.VmInformationViewProvider;

import com.redhat.thermostat.client.swing.internal.GUIClientCommand;
import com.redhat.thermostat.client.swing.internal.Main;
import com.redhat.thermostat.client.swing.internal.views.SwingAgentInformationViewProvider;
import com.redhat.thermostat.client.swing.internal.views.SwingClientConfigurationViewProvider;
import com.redhat.thermostat.client.swing.internal.views.SwingHostInformationViewProvider;
import com.redhat.thermostat.client.swing.internal.views.SwingSummaryViewProvider;
import com.redhat.thermostat.client.swing.internal.views.SwingVmInformationViewProvider;

import com.redhat.thermostat.common.ApplicationService;
import com.redhat.thermostat.common.MultipleServiceTracker;
import com.redhat.thermostat.common.MultipleServiceTracker.Action;

import com.redhat.thermostat.common.cli.CommandRegistry;
import com.redhat.thermostat.common.cli.CommandRegistryImpl;
import com.redhat.thermostat.shared.config.CommonPaths;
import com.redhat.thermostat.utils.keyring.Keyring;

public class ThermostatActivator implements BundleActivator {

    private CommandRegistry cmdReg;
    private MultipleServiceTracker dependencyTracker;

    @Override
    public void start(final BundleContext context) throws Exception {
        
        // Host views
        HostInformationViewProvider infoProvider = new SwingHostInformationViewProvider();
        context.registerService(HostInformationViewProvider.class.getName(), infoProvider, null);
        
        // Vm views
        VmInformationViewProvider vmInfoProvider = new SwingVmInformationViewProvider();
        context.registerService(VmInformationViewProvider.class.getName(), vmInfoProvider, null);
        
        // Summary view
        VersionAndInfoViewProvider summaryViewProvider = new SwingSummaryViewProvider();
        context.registerService(VersionAndInfoViewProvider.class.getName(), summaryViewProvider, null);

        // AgentInformation and ClientConfiguraiton view
        AgentInformationViewProvider agentViewProvider = new SwingAgentInformationViewProvider();
        context.registerService(AgentInformationViewProvider.class.getName(), agentViewProvider, null);
        ClientConfigViewProvider clientConfigViewProvider = new SwingClientConfigurationViewProvider();
        context.registerService(ClientConfigViewProvider.class, clientConfigViewProvider, null);
        
        Class<?>[] deps = new Class<?>[] {
                Keyring.class,
                CommonPaths.class,
                ApplicationService.class,
        };
        dependencyTracker = new MultipleServiceTracker(context, deps, new Action() {
            
            private Main main;

            @Override
            public void dependenciesAvailable(Map<String, Object> services) {
                Keyring keyring = (Keyring) services.get(Keyring.class.getName());
                CommonPaths paths = (CommonPaths) services.get(CommonPaths.class.getName());
                ApplicationService appSvc = (ApplicationService) services.get(ApplicationService.class.getName());
                cmdReg = new CommandRegistryImpl(context);
                main = new Main(context, keyring, paths, appSvc);
                
                GUIClientCommand cmd = new GUIClientCommand(main);
                cmdReg.registerCommand("gui", cmd);
            }

            @Override
            public void dependenciesUnavailable() {
                if (main != null) {
                    main.shutdown();
                }
            }
        });
        dependencyTracker.open();
    }

    @Override
    public void stop(BundleContext context) throws Exception {
        dependencyTracker.close();
        cmdReg.unregisterCommands();
    }
}