/*
 * Copyright (c) 2006-2017 DMDirc Developers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.dmdirc.addons.ui_swing;

import com.dmdirc.addons.ui_swing.components.menubar.MenuBar;
import com.dmdirc.addons.ui_swing.components.statusbar.FeedbackNag;
import com.dmdirc.addons.ui_swing.components.statusbar.SwingStatusBar;
import com.dmdirc.addons.ui_swing.dialogs.url.URLDialogFactory;
import com.dmdirc.addons.ui_swing.events.SwingEventBus;
import com.dmdirc.addons.ui_swing.framemanager.ctrltab.CtrlTabWindowManager;
import com.dmdirc.addons.ui_swing.framemanager.tree.TreeFrameManagerProvider;
import com.dmdirc.addons.ui_swing.wizard.firstrun.FirstRunWizardExecutor;
import com.dmdirc.events.ClientInfoRequestEvent;
import com.dmdirc.events.ClientPrefsOpenedEvent;
import com.dmdirc.events.FeedbackNagEvent;
import com.dmdirc.events.FirstRunEvent;
import com.dmdirc.events.UnknownURLEvent;
import com.dmdirc.events.eventbus.EventBus;
import com.dmdirc.plugins.PluginDomain;
import com.dmdirc.plugins.PluginInfo;
import com.dmdirc.ui.WindowManager;
import com.dmdirc.ui.core.about.InfoItem;

import java.awt.Window;

import javax.inject.Inject;
import javax.inject.Provider;
import javax.inject.Singleton;
import javax.swing.UIManager;

import net.miginfocom.layout.LayoutUtil;

import net.engio.mbassy.listener.Handler;

/**
 * Manages swing components and dependencies.
 */
@Singleton
public class SwingManager {

    /** The window factory in use. */
    private final Provider<SwingWindowFactory> windowFactory;
    private final Provider<MenuBar> menuBar;
    /** The status bar in use. */
    private final Provider<SwingStatusBar> statusBar;
    /** The window manager to listen on for events. */
    private final WindowManager windowManager;
    private final CtrlTabWindowManager ctrlTabManager;
    /** Provider of first run executors. */
    private final Provider<FirstRunWizardExecutor> firstRunExecutor;
    /** Provider of feedback nags. */
    private final Provider<FeedbackNag> feedbackNagProvider;
    /** Factory to use to create URL dialogs. */
    private final URLDialogFactory urlDialogFactory;
    /** Link handler for swing links. */
    private final SwingLinkHandler linkHandler;
    /** Bus to listen on for events. */
    private final EventBus eventBus;
    /** The event bus for this plugin. */
    private final SwingEventBus swingEventBus;
    /** The provider to use to create tree-based frame managers. */
    private final TreeFrameManagerProvider treeProvider;
    /** The provider to use to create new main frames. */
    private final Provider<MainFrame> mainFrameProvider;
    /** Swing window manager. */
    private final Provider<SwingWindowManager> swingWindowManager;
    /** The main frame of the Swing UI. */
    private MainFrame mainFrame;
    /** Swing UI initialiser. */
    private final SwingUIInitialiser uiInitialiser;
    private final PluginInfo pluginInfo;
    private final String domain;

    /**
     * Creates a new instance of {@link SwingManager}.
     *
     * @param windowFactory           The window factory in use.
     * @param windowManager           The window manager to listen on for events.
     * @param mainFrameProvider       The provider to use for the main frame.
     * @param menuBar                 The menu bar to use for the main frame.
     * @param statusBar               The status bar to use in the main frame.
     * @param ctrlTabManager          The window manager that handles ctrl+tab behaviour.
     * @param firstRunExecutor        A provider of first run executors.
     * @param feedbackNagProvider     Provider of feedback nags.
     * @param urlDialogFactory        Factory to use to create URL dialogs.
     * @param linkHandler             The handler to use when users click links.
     * @param eventBus                The bus to listen on for events.
     * @param swingEventBus           The swing event bus to listen on for swing events.
     * @param treeProvider            Provider to use for tree-based frame managers.
     * @param swingWindowManager      Swing window manager
     * @param uiInitialiser           Initialiser to set system/swing settings.
     */
    @Inject
    public SwingManager(
            final Provider<SwingWindowFactory> windowFactory,
            final WindowManager windowManager,
            final Provider<MainFrame> mainFrameProvider,
            final Provider<MenuBar> menuBar,
            final Provider<SwingStatusBar> statusBar,
            final CtrlTabWindowManager ctrlTabManager,
            final Provider<FirstRunWizardExecutor> firstRunExecutor,
            final Provider<FeedbackNag> feedbackNagProvider,
            final URLDialogFactory urlDialogFactory,
            final SwingLinkHandler linkHandler,
            final EventBus eventBus,
            final SwingEventBus swingEventBus,
            final TreeFrameManagerProvider treeProvider,
            final Provider<SwingWindowManager> swingWindowManager,
            final SwingUIInitialiser uiInitialiser,
            @PluginDomain(SwingController.class) final PluginInfo pluginInfo,
            @PluginDomain(SwingController.class) final String domain) {
        this.windowFactory = windowFactory;
        this.windowManager = windowManager;
        this.menuBar = menuBar;
        this.statusBar = statusBar;
        this.mainFrameProvider = mainFrameProvider;
        this.ctrlTabManager = ctrlTabManager;
        this.firstRunExecutor = firstRunExecutor;
        this.feedbackNagProvider = feedbackNagProvider;
        this.urlDialogFactory = urlDialogFactory;
        this.linkHandler = linkHandler;
        this.eventBus = eventBus;
        this.swingEventBus = swingEventBus;
        this.treeProvider = treeProvider;
        this.swingWindowManager = swingWindowManager;
        this.uiInitialiser = uiInitialiser;
        this.pluginInfo = pluginInfo;
        this.domain = domain;
    }

    /**
     * Handles loading of the UI.
     */
    public void load() {
        UIUtilities.invokeLater(() -> {
            uiInitialiser.load();
            this.mainFrame = mainFrameProvider.get();
            mainFrame.setMenuBar(menuBar.get());
            mainFrame.setWindowManager(ctrlTabManager);
            mainFrame.setStatusBar(statusBar.get());
            mainFrame.initComponents();
            swingEventBus.subscribe(mainFrame);
            swingEventBus.subscribe(ctrlTabManager);

            windowManager.addListenerAndSync(windowFactory.get());
            eventBus.subscribe(statusBar.get());
            eventBus.subscribe(this);
            eventBus.subscribe(mainFrame);
            eventBus.subscribe(linkHandler);

            mainFrame.setVisible(true);
        });
    }

    /**
     * Handles unloading of the UI.
     */
    public void unload() {
        UIUtilities.invokeLater(() -> {
            swingWindowManager.get().getTopLevelWindows().forEach(Window::dispose);
            windowManager.removeListener(windowFactory.get());
            windowFactory.get().dispose();
            swingEventBus.unsubscribe(mainFrame);
            swingEventBus.unsubscribe(ctrlTabManager);
            mainFrame.dispose();
            eventBus.unsubscribe(statusBar.get());
            eventBus.unsubscribe(this);
            eventBus.unsubscribe(mainFrame);
            eventBus.unsubscribe(linkHandler);
            uiInitialiser.unload();
        });
    }

    /**
     * Retrieves the main frame.
     *
     * @return A main frame instance.
     *
     * @deprecated Should be injected.
     */
    @Deprecated
    public MainFrame getMainFrame() {
        return mainFrame;
    }

    public TreeFrameManagerProvider getTreeProvider() {
        return treeProvider;
    }

    @Handler
    public void showFirstRunWizard(final FirstRunEvent event) {
        if (!event.isHandled()) {
            firstRunExecutor.get().showWizardAndWait();
            event.setHandled(true);
        }
    }

    @Handler
    public void showURLDialog(final UnknownURLEvent event) {
        if (!event.isHandled()) {
            event.setHandled(true);
            UIUtilities.invokeLater(() -> urlDialogFactory.getURLDialog(event.getURI()).display());
        }
    }

    @Handler
    public void showFeedbackNag(final FeedbackNagEvent event) {
        UIUtilities.invokeLater(feedbackNagProvider::get);
    }

    @Handler
    public void showConfig(final ClientPrefsOpenedEvent event) {
        event.getModel().getCategory("GUI").addSubCategory(
                new SwingPreferencesModel(pluginInfo, domain, event.getModel().getConfigManager(),
                        event.getModel().getIdentity()).getSwingUICategory());
    }

    @Handler
    public void handleInfoRequest(final ClientInfoRequestEvent event) {
        event.addInfoItem(InfoItem.create("Swing UI Version",
                        pluginInfo.getMetaData().getVersion().toString()),
                InfoItem.create("Look and Feel", UIManager.getLookAndFeel().getName()),
                InfoItem.create("MiG Layout Version", LayoutUtil.getVersion())
        );
    }

}