/*******************************************************************************
 * Copyright 2014 Federal Chancellery Austria
 * MOA-ID has been developed in a cooperation between BRZ, the Federal
 * Chancellery Austria - ICT staff unit, and Graz University of Technology.
 * 
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 * 
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 ******************************************************************************/
/*
 * Copyright 2003 Federal Chancellery Austria
 * MOA-ID has been developed in a cooperation between BRZ, the Federal
 * Chancellery Austria - ICT staff unit, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 */


package at.gv.egovernment.moa.id.commons.utils;

import java.util.Locale;

import org.springframework.stereotype.Service;

import at.gv.egiz.eaaf.core.api.IStatusMessenger;
import at.gv.egiz.eaaf.core.exceptions.ProcessExecutionException;
import at.gv.egovernment.moa.id.commons.api.exceptions.BKUException;
import at.gv.egovernment.moa.id.commons.api.exceptions.MISSimpleClientException;
import at.gv.egovernment.moa.id.commons.api.exceptions.MOAIDException;
import at.gv.egovernment.moa.util.Messages;
import at.gv.egovernment.moa.util.MiscUtil;


@Service("MOAIDMessageProvider")
public class MOAIDMessageProvider implements IStatusMessenger {
  
  //internal messanges
  private static final String[] DEFAULT_MESSAGE_RESOURCES = { "resources/properties/id_messages" };  
  private static final Locale[] DEFAULT_MESSAGE_LOCALES = new Locale[] { new Locale("de", "AT") };
  private Messages messages;
  
  //external error codes
  private static final String[] DEFAULT_EXTERNALERROR_RESOURCES = { "resources/properties/protocol_response_statuscodes" };  
  private static final Locale[] DEFAULT_EXTERNALERROR_LOCALES = new Locale[] { new Locale("de", "AT") };
  private Messages externalError = null;
  
  
  private static MOAIDMessageProvider instance = null;
  
  public static MOAIDMessageProvider getInstance() {
	  if (instance == null)
		instance = new MOAIDMessageProvider();
	  
	  return instance;
	  
	}
  
  public MOAIDMessageProvider() {
	  this.messages = new Messages(DEFAULT_MESSAGE_RESOURCES, DEFAULT_MESSAGE_LOCALES);
	  this.externalError = new Messages(DEFAULT_EXTERNALERROR_RESOURCES, DEFAULT_EXTERNALERROR_LOCALES);
	  
  }	
  
  /**
   * Get the message corresponding to a given message ID.
   *
   * @param messageId The ID of the message.
   * @param parameters The parameters to fill in into the message arguments.
   * @return The formatted message. 
   */
  @Override
  public String getMessage(String messageId, Object[] parameters) {
    return messages.getMessage(messageId, parameters);
  }


@Override
public String getResponseErrorCode(Throwable throwable) {
	String errorCode = null;
	
	if (throwable instanceof BKUException) {
		BKUException error = (BKUException) throwable;			
		errorCode = mapInternalErrorToExternalError(error.getMessageId()) + 
				error.getBkuErrorCode();			
		
	} else if (throwable instanceof MISSimpleClientException) {
		MISSimpleClientException error = (MISSimpleClientException) throwable;
		
		if (MiscUtil.isNotEmpty(error.getMISErrorCode()))
			errorCode = mapInternalErrorToExternalError(error.getMessageId()) + 
					error.getMISErrorCode();							
		else
			errorCode = mapInternalErrorToExternalError(error.getMessageId());
					
	} else if (throwable instanceof MOAIDException) {
		MOAIDException error = (MOAIDException) throwable;
		errorCode = mapInternalErrorToExternalError(error.getMessageId());
	
	} else if (throwable instanceof ProcessExecutionException) {
		errorCode = IStatusMessenger.CODES_EXTERNAL_ERROR_PROCESSENGINE;
		
	} else {
		errorCode = IStatusMessenger.CODES_EXTERNAL_ERROR_GENERIC;
					
	}
			
	return errorCode;
}


@Override
public String mapInternalErrorToExternalError(String intErrorCode) {
	String extErrorCode = externalError.getMessage(intErrorCode, null);
	
	if (MiscUtil.isEmpty(extErrorCode))
		extErrorCode = IStatusMessenger.CODES_EXTERNAL_ERROR_GENERIC;
			
	return extErrorCode;
}

}