/*
 * 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.tuscany.sca.monitor.impl;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.tuscany.sca.monitor.Monitor;
import org.apache.tuscany.sca.monitor.Problem;
import org.apache.tuscany.sca.monitor.Problem.Severity;

/**
 * A monitor for the watching for validation problems
 *
 * @version $Rev$ $Date$
 */
public class DefaultMonitorImpl extends Monitor {
    private static final Logger logger = Logger.getLogger(DefaultMonitorImpl.class.getName());
    
    // Cache all the problem reported to monitor for further analysis
    private List<Problem> problemCache = new ArrayList<Problem>();

    public void problem(Problem problem) {
        
        Logger problemLogger = Logger.getLogger(problem.getSourceClassName(), problem.getBundleName());
        
        if (problemLogger == null){
            logger.severe("Can't get logger " + problem.getSourceClassName()+ " with bundle " + problem.getBundleName());
        }
        
        if (problem.getSeverity() == Severity.INFO) {
        	problemCache.add(problem);
            problemLogger.logp(Level.INFO, problem.getSourceClassName(), null, 
            		              problem.getMessageId(), problem.getMessageParams());
        } 
        else if (problem.getSeverity() == Severity.WARNING) {
            problemCache.add(problem);
            problemLogger.logp(Level.WARNING, problem.getSourceClassName(), null, 
            		              problem.getMessageId(), problem.getMessageParams());
        } 
        else if (problem.getSeverity() == Severity.ERROR) {
            if (problem.getCause() != null) {
                problemCache.add(problem);
                problemLogger.logp(Level.SEVERE, problem.getSourceClassName(), 
                    		        null, problem.getMessageId(), problem.getCause().toString());

            } else {
                problemCache.add(problem);
                problemLogger.logp(Level.SEVERE, problem.getSourceClassName(), null, 
                		           problem.getMessageId(), problem.getMessageParams());
            }
        }
    }
    
    public List<Problem> getProblems(){
        return problemCache;
    }
    
    public Problem createProblem(String sourceClassName, String bundleName,
			Severity severity, Object problemObject, String messageId,
			Exception cause) {
		return new ProblemImpl(sourceClassName, bundleName, severity,
				problemObject, messageId, cause);
	}

	public Problem createProblem(String sourceClassName, String bundleName,
			Severity severity, Object problemObject, String messageId,
			Object... messageParams) {
		return new ProblemImpl(sourceClassName, bundleName, severity,
				problemObject, messageId, messageParams);
	}    
    
    public Problem getLastLoggedProblem(){
        return problemCache.get(problemCache.size() - 1);
    }
    
    public boolean isMessageLogged(String messageId) {
        for (Problem problem : problemCache){
            if (problem.getMessageId().equals(messageId)){
                return true;
            }
        }
        
        return false;
    }
    
    public Problem getProblem(String messageId) {
        for (Problem problem : problemCache){
            if (problem.getMessageId().equals(messageId)){
                return problem;
            }
        }
        
        return null;
    }    
}