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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.camel.component.undertow.handlers;

import java.util.HashMap;
import java.util.Map;

import io.undertow.server.HttpHandler;
import io.undertow.server.handlers.PathHandler;

/**
 * Extended PathHandler to monitor add/remove handlers.
 */
public class CamelPathHandler extends PathHandler {
    private Map handlers = new HashMap<>();
    private String handlerString;

    public CamelPathHandler(HttpHandler defaultHandler) {
        super(defaultHandler);
    }

    @Override
    public synchronized PathHandler addPrefixPath(final String path, final HttpHandler handler) {
        super.addPrefixPath(path, handler);
        handlers.put(path, handler);
        handlerString = null;
        return this;
    }

    @Override
    public synchronized PathHandler addExactPath(final String path, final HttpHandler handler) {
        super.addExactPath(path, handler);
        handlers.put(path, handler);
        handlerString = null;
        return this;
    }

    @Override
    public synchronized PathHandler removePrefixPath(final String path) {
        super.removePrefixPath(path);
        handlers.remove(path);
        handlerString = null;
        return this;
    }

    @Override
    public synchronized PathHandler removeExactPath(final String path) {
        super.removeExactPath(path);
        handlers.remove(path);
        handlerString = null;
        return this;
    }

    public HttpHandler getHandler(String path) {
        return handlers.get(path);
    }

    public boolean isEmpty() {
        return handlers.isEmpty();
    }

    @Override
    public String toString() {
        if (handlerString == null) {
            handlerString = "CamelPathHandler[" + handlers + "]";
        }
        return handlerString;
    }

}