/*
 * 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.sling.performance;

import javax.jcr.Node;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.naming.NamingException;

import org.apache.sling.commons.testing.jcr.RepositoryUtil;
import org.apache.sling.jcr.api.SlingRepository;


public abstract class AbstractRepositoryTest implements IdentifiableTestClass{

    protected String testInstanceName;

    public AbstractRepositoryTest(String testInstanceName) {
        super();
        this.testInstanceName = testInstanceName;
    }

	private static class ShutdownThread extends Thread {
        @Override
        public void run() {
            try {
                RepositoryUtil.stopRepository();
            } catch(Exception e) {
                //ignore for now
            }
        }
        
    }
    private static SlingRepository repository;
    private int counter;
    protected Session session;
    
    protected Node testRoot;;
    
    /** Return a Repository - first call initializes it, and a JVM
     *  shutdown hook is registered to stop it
     */
    protected SlingRepository getRepository() throws RepositoryException, NamingException {
        if(repository != null) {
            return repository;
        }
        
        synchronized (AbstractRepositoryTest.class) {
            if(repository == null) {
                RepositoryUtil.startRepository();
                repository = RepositoryUtil.getRepository();
                Runtime.getRuntime().addShutdownHook(new ShutdownThread());
            }
            return repository;
        }
    }

    /** Return a JCR Session, initialized on demand */ 
    protected Session getSession() throws RepositoryException, NamingException {
        if(session == null) {
            session = getRepository().loginAdministrative(null);
        }
        return session;
    }
    
    /** Return a test root node, created on demand, with a unique path */ 
    protected Node getTestRootNode() throws RepositoryException, NamingException {
        if(testRoot==null) {
            final Node root = getSession().getRootNode();
            final Node classRoot = root.addNode(getClass().getSimpleName()); 
            testRoot = classRoot.addNode(System.currentTimeMillis() + "_" + (++counter));
        }
        return testRoot;
    }

    public String testClassName() {
        return testInstanceName;
    }
}