/**

  * Copyright 2005-2013 Dozer Project

  *

  * Licensed 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.dozer.util;

 import org.apache.commons.lang3.builder.ReflectionToStringBuilder;

 import org.apache.commons.lang3.builder.ToStringStyle;

 import org.dozer.fieldmap.FieldMap;

 import org.slf4j.Logger;

 import org.slf4j.LoggerFactory;

 import java.util.Collection;

 /**

  * Internal class used to build various types of log messages. Only intended for internal use.

  * 

  * @author tierney.matt

  * @author garsombke.franz

  */

 public final class LogMsgFactory {

   private final Logger log = LoggerFactory.getLogger(LogMsgFactory.class);

   public String createFieldMappingErrorMsg(Object srcObj, FieldMap fieldMapping, Object srcFieldValue, Object destObj) {

     String srcClassName = null;

     if (srcObj != null) {

       srcClassName = srcObj.getClass().getName();

     }

     String srcValueType;

     String srcFieldValueString = null;

     if (srcFieldValue != null) {

       srcValueType = srcFieldValue.getClass().toString();

       //1797808 - If an error occurs calling src value toString(), eat the error and still log the dozer error msg

       try {

         srcFieldValueString = srcFieldValue.toString();

       } catch (Exception e) {

         log.error("An exception occurred invoking toString() on the source field value: " + srcFieldValue.getClass().getName(), e);

         srcFieldValueString = "Unable to determine source field value";

       }

     } else {

       srcValueType = fieldMapping.getSrcFieldType();

     }

     String destClassName = null;

     if (destObj != null) {

       destClassName = destObj.getClass().getName();

     }

     String destFieldTypeName = null;

     try {

       if (destObj != null) {

         destFieldTypeName = fieldMapping.getDestFieldType(destObj.getClass()).getName();

       }

     } catch (Exception e) {

       log.warn("Unable to determine dest field type when build log.error message");

     }

     return "Field mapping error -->" + "\n  MapId: " + fieldMapping.getMapId() + "\n  Type: " + fieldMapping.getType()

         + "\n  Source parent class: " + srcClassName + "\n  Source field name: " + fieldMapping.getSrcFieldName()

         + "\n  Source field type: " + srcValueType + "\n  Source field value: " + srcFieldValueString + "\n  Dest parent class: "

         + destClassName + "\n  Dest field name: " + fieldMapping.getDestFieldName() + "\n  Dest field type: " + destFieldTypeName;

   }

   public String createFieldMappingSuccessMsg(Class<?> srcClass, Class<?> destClass, String srcFieldName, String destFieldName,

       Object srcFieldValue, Object destFieldValue, String classMapId) {

     String srcClassStr = MappingUtils.getClassNameWithoutPackage(srcClass);

     String destClassStr = MappingUtils.getClassNameWithoutPackage(destClass);

     return "MAPPED: " + srcClassStr + "." + srcFieldName + " --> " + destClassStr + "." + destFieldName + "    VALUES: "

         + getLogOutput(srcFieldValue) + " --> " + getLogOutput(destFieldValue) + "    MAPID: "

         + (classMapId != null ? classMapId : "");

   }

   private String getLogOutput(Object object) {

     String output = "NULL";

     if (object == null) {

       return output;

     }

     try {

       if (object.getClass().isArray() || Collection.class.isAssignableFrom(object.getClass())) {

         output = ReflectionToStringBuilder.toString(object, ToStringStyle.MULTI_LINE_STYLE);

       } else {

         output = object.toString();

       }

     } catch (RuntimeException e) {

       output = object.toString();

     }

     return output;

   }

 }