/*
 * 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.catalina.ant;

import org.apache.tools.ant.BuildException;

/**
 * Ant task that implements the <code>/sessions</code> command supported by the Tomcat manager application.
 */
public class SessionsTask extends AbstractCatalinaCommandTask {

    /**
     * Default constructor.
     */
    public SessionsTask() {
    }

    /**
     * Minimum idle time in minutes for sessions to be included in the response.
     */
    protected String idle = null;

    /**
     * Returns the minimum idle time in minutes for sessions to be included.
     *
     * @return the minimum idle time
     */
    public String getIdle() {
        return this.idle;
    }

    /**
     * Sets the minimum idle time in minutes for sessions to be included.
     *
     * @param idle the minimum idle time
     */
    public void setIdle(String idle) {
        this.idle = idle;
    }

    /**
     * Appends the idle parameter to the query string if both path and idle are set.
     *
     * @param command the command being executed
     * @return the query string buffer
     */
    @Override
    public StringBuilder createQueryString(String command) {
        StringBuilder buffer = super.createQueryString(command);
        if (path != null && idle != null) {
            buffer.append("&idle=");
            try {
                buffer.append(Integer.valueOf(idle));
            } catch (NumberFormatException nfe) {
                throw new BuildException("Invalid 'idle' attribute (must be an integer): [" + idle + "]",  nfe);
            }
        }
        return buffer;
    }

    @Override
    public void execute() throws BuildException {

        super.execute();
        execute(createQueryString("/sessions").toString());

    }

}
