/*
    * #%L
    * xcode-maven-plugin
    * %%
    * Copyright (C) 2012 SAP AG
    * %%
    * 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.
   * #L%
   */
  package com.sap.prd.mobile.ios.mios;
  
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.logging.ErrorManager;
  import java.util.logging.Handler;
  import java.util.logging.Level;
  import java.util.logging.LogRecord;
  import java.util.logging.Logger;
  
  import org.apache.maven.plugin.logging.Log;
  import org.apache.maven.plugin.logging.SystemStreamLog;
  
  
  public class XCodePluginLogger extends Logger
  {
    private Log log = new SystemStreamLog();
    
    private final static Collection<Level> DEBUG_LEVELS = Collections.unmodifiableCollection(Arrays.asList(Level.ALL,
          Level.FINEST, Level.FINER, Level.FINE, Level.CONFIG));
  
    public XCodePluginLogger()
    {
      super(getLoggerName(), null);
      setUseParentHandlers(false);
  
      for(Handler h : getHandlers()) {
        super.removeHandler(h);
      }
  
      addHandler(new Handler() {
  
        @Override
        public void close() throws SecurityException
        {
        }
  
        @Override
        public void flush()
        {
        }
  
        @Override
        public boolean isLoggable(LogRecord record)
        {
          if(DEBUG_LEVELS.contains(record.getLevel()))
          {
            return log.isDebugEnabled();
          }
  
          return super.isLoggable(record);
        }
  
        @Override
        public void publish(LogRecord record)
        {
          final Level level = record.getLevel();
  
          if(DEBUG_LEVELS.contains(level))
          {
            if(record.getThrown() == null)
            {
              log.debug(record.getMessage());
            } 
            else
            { 
              log.debug(record.getMessage(), record.getThrown());
            }
          } 
          else if(level == Level.INFO)
          {
            if(record.getThrown() == null)
            {
              log.info(record.getMessage());
            }
            else 
            {
              log.info(record.getMessage(), record.getThrown());
            }
         }
         else if(level == Level.WARNING) 
         {
           if(record.getThrown() == null)
           {
             log.warn(record.getMessage());
           }
           else 
           {
             log.warn(record.getMessage(), record.getThrown());
           }
         }
         else if(level == Level.SEVERE) 
         {
           if(record.getThrown() == null)
           {
             log.error(record.getMessage());
           }
           else 
           {
             log.error(record.getMessage(), record.getThrown());
           }
         }
         else
         {
           getErrorManager().error("Cannot handle log message with level '" + record.getLevel() + "'.", null, ErrorManager.GENERIC_FAILURE);
         }
       }
     });
   }
 
   public void setLog(Log log) {
 
     if(log == null)
       throw new NullPointerException();
 
     this.log = log;
   }
   
   public final static String getLoggerName() {
     return XCodePluginLogger.class.getPackage().getName();
   }
 }