/**
 * Copyright (C) 2015 Valkyrie RCP
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.valkyriercp.application.exceptionhandling;

import com.google.common.collect.Lists;

import java.util.List;

/**
 * Handles the thrownTrowable by the exception handler if it is an instance of one of the throwableClassList.
 * Note: Also subclasses of the classes in the throwableClassList will be handled by the exception handler.
 *
 * @author Geoffrey De Smet
 * @since 0.3.0
 */
public class SimpleExceptionHandlerDelegate<SELF extends SimpleExceptionHandlerDelegate<SELF>> extends AbstractExceptionHandlerDelegate<SELF> {

    private List<Class<? extends Throwable>> throwableClassList;

    public SimpleExceptionHandlerDelegate() {
    }

    public SimpleExceptionHandlerDelegate(Class<? extends Throwable> throwableClass,
                                          Thread.UncaughtExceptionHandler exceptionHandler) {
        this(Lists.<Class<? extends Throwable>>newArrayList(throwableClass), exceptionHandler);
    }

    public SimpleExceptionHandlerDelegate(List<Class<? extends Throwable>> throwableClassList,
                                          Thread.UncaughtExceptionHandler exceptionHandler) {
        super(exceptionHandler);
        this.throwableClassList = throwableClassList;
    }

    public void setThrowableClass(Class<? extends Throwable> throwableClass) {
        setThrowableClassList(Lists.<Class<? extends Throwable>>newArrayList(throwableClass));
    }

    public SELF forThrowable(Class<? extends Throwable> throwableClass) {
        setThrowableClass(throwableClass);
        return self();
    }


    public void setThrowableClassList(List<Class<? extends Throwable>> throwableClassList) {
        this.throwableClassList = throwableClassList;
    }

    public SELF forThrowables(List<Class<? extends Throwable>> throwableClassList) {
        setThrowableClassList(throwableClassList);
        return self();
    }

    public boolean hasAppropriateHandlerPurged(Throwable throwable) {
        for (Class throwableClass : throwableClassList) {
            if (throwableClass.isInstance(throwable)) {
                return true;
            }
        }
        return false;
    }

}