/**
    * Copyright (C) 2014-2015 Philip Helger (www.helger.com)
    * philip[at]helger[dot]com
    *
    * 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 com.helger.schematron.pure.errorhandler;
  
  import javax.annotation.Nonnull;
  import javax.annotation.Nullable;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.helger.commons.error.IErrorLevel;
  import com.helger.commons.io.resource.IReadableResource;
  import com.helger.commons.lang.ClassHelper;
  import com.helger.commons.log.LogHelper;
  import com.helger.commons.string.StringHelper;
  import com.helger.schematron.pure.model.IPSElement;
  import com.helger.schematron.pure.model.IPSHasID;
  
  /**
   * An implementation if {@link IPSErrorHandler} that logs to an SLF4J logger.
   *
   * @author Philip Helger
   */
  public class LoggingPSErrorHandler extends AbstractPSErrorHandler
  {
    private static final Logger s_aLogger = LoggerFactory.getLogger (LoggingPSErrorHandler.class);
  
    public LoggingPSErrorHandler ()
    {
      super ();
    }
  
    public LoggingPSErrorHandler (@Nullable final IPSErrorHandler aNestedErrorHandler)
    {
      super (aNestedErrorHandler);
    }
  
    @Nonnull
    public static String getLogMessage (@Nullable final IReadableResource aRes,
                                        @Nullable final IPSElement aSourceElement,
                                        @Nonnull final String sMessage)
    {
      return StringHelper.getImplodedNonEmpty (" - ",
                                               aRes == null ? null : aRes.getPath (),
                                               aSourceElement == null ? null
                                                                      : ClassHelper.getClassLocalName (aSourceElement),
                                               aSourceElement instanceof IPSHasID && ((IPSHasID) aSourceElement).hasID () ? "ID " +
                                                                                                                            ((IPSHasID) aSourceElement).getID ()
                                                                                                                          : null,
                                               sMessage);
    }
  
    @Override
    protected void handle (@Nullable final IReadableResource aRes,
                           @Nonnull final IErrorLevel aErrorLevel,
                           @Nullable final IPSElement aSourceElement,
                           @Nonnull final String sMessage,
                           @Nullable final Throwable t)
    {
      LogHelper.log (s_aLogger, aErrorLevel, getLogMessage (aRes, aSourceElement, sMessage), t);
    }
  }