/*
 * This file is part of the Illarion project.
 *
 * Copyright © 2015 - Illarion e.V.
 *
 * Illarion 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.
 *
 * Illarion 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.
 */
package illarion.client.crash;

import illarion.client.util.Lang;

import javax.annotation.Nonnull;

/**
 * This is the default crash handler that is called in case anything crashes
 * that did not got a special crash handler. Since a call of this crash handler
 * means that its unknown what exactly crashed there is no way in restarting the
 * crashed part. So in this case the client will be shut down and a error
 * message displayed.
 *
 * @author Martin Karing <nitram@illarion.org>
 */
public final class DefaultCrashHandler extends AbstractCrashHandler {
    /**
     * The singleton instance of this crash handler to avoid to many instances
     * of this one.
     */
    private static final DefaultCrashHandler INSTANCE = new DefaultCrashHandler();

    /**
     * The private constructor that is used to avoid the creation of any other
     * instances but the singleton instance.
     */
    private DefaultCrashHandler() {
    }

    /**
     * Get the singleton instance of this class.
     *
     * @return the singleton instance of this class
     */
    @Nonnull
    public static DefaultCrashHandler getInstance() {
        return INSTANCE;
    }

    /**
     * Get the message that describes the problem human readable.
     *
     * @return the error message
     */
    @Nonnull
    @Override
    protected String getCrashMessage(@Nonnull Thread t, @Nonnull Throwable e) {
        if (isMissingOpenGLSupportMessage(t, e)) {
            return Lang.getMsg("crash.noOpenGL");
        }
        return Lang.getMsg("crash.default") + '\n' + e.getLocalizedMessage();
    }

    @Override
    protected boolean isUnsolvableError(@Nonnull Thread t, @Nonnull Throwable e) {
        return isMissingOpenGLSupportMessage(t, e);
    }

    private static boolean isMissingOpenGLSupportMessage(@Nonnull Thread t, @Nonnull Throwable e) {
        return "LWJGL Application".equals(t.getName()) && (e instanceof RuntimeException) &&
                (e.getMessage() != null) && e.getMessage().startsWith("OpenGL is not supported by the video driver");
    }

    /**
     * Crash the client right away, since there is no specific thing to do here.
     */
    @Override
    protected void restart(@Nonnull Thread t, @Nonnull Throwable e) {
        crashClient(t, e);
    }
}