/*
    * Copyright (c) 2002-2014, Mairie de Paris
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, are permitted provided that the following conditions
    * are met:
    *
    *  1. Redistributions of source code must retain the above copyright notice
   *     and the following disclaimer.
   *
   *  2. Redistributions in binary form must reproduce the above copyright notice
   *     and the following disclaimer in the documentation and/or other materials
   *     provided with the distribution.
   *
   *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
   *     contributors may be used to endorse or promote products derived from
   *     this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   * License 1.0
   */
  package fr.paris.lutece.plugins.crmclient.util.http;
  
  import fr.paris.lutece.plugins.crmclient.util.CRMException;
  import fr.paris.lutece.portal.service.util.AppLogService;
  import fr.paris.lutece.util.httpaccess.HttpAccess;
  import fr.paris.lutece.util.httpaccess.HttpAccessException;
  import fr.paris.lutece.util.signrequest.HeaderHashAuthenticator;
  import fr.paris.lutece.util.signrequest.NoSecurityAuthenticator;
  import fr.paris.lutece.util.signrequest.RequestAuthenticator;
  import fr.paris.lutece.util.signrequest.RequestHashAuthenticator;
  
  import org.apache.commons.lang.StringUtils;
  
  import java.util.Date;
  import java.util.List;
  import java.util.Map;
  import java.util.Map.Entry;
  
  /**
   *
   * WebServiceCaller
   *
   */
  public class WebServiceCaller implements IWebServiceCaller
  {
      /**
       * {@inheritDoc}
       */
      @Override
      public String callWebService( String strUrl, Map<String, String> mapParameters, RequestAuthenticator authenticator, List<String> listElements,
              HttpMethodEnum httpMethod ) throws CRMException
      {
          String strResponse = StringUtils.EMPTY;
  
          if ( AppLogService.isDebugEnabled( ) )
          {
              AppLogService.debug( trace( strUrl, mapParameters, authenticator, listElements ) );
          }
  
          try
          {
              HttpAccess httpAccess = new HttpAccess( );
  
              if ( httpMethod == HttpMethodEnum.POST )
              {
                  strResponse = httpAccess.doPost( strUrl, mapParameters, authenticator, listElements );
              }
              else
              {
                  strResponse = httpAccess.doGet( strUrl, authenticator, listElements );
              }
          }
          catch( HttpAccessException e )
          {
              String strError = "Error connecting to '" + strUrl + "' : ";
              AppLogService.error( strError + e.getMessage( ), e );
              throw new CRMException( strError, e );
          }
  
          return strResponse;
      }
  
      /**
       * Trace the web service call
       * 
       * @param strUrl
      *            The WS URI
      * @param mapParameters
      *            The parameters
      * @param authenticator
      *            The Request Authenticator
      * @param listElements
      *            The list of elements to use to build the signature
      * @return The trace
      */
     protected String trace( String strUrl, Map<String, String> mapParameters, RequestAuthenticator authenticator, List<String> listElements )
     {
         StringBuilder sbTrace = new StringBuilder( );
         sbTrace.append( "\n ---------------------- CRM Client WebService Call -------------------" );
         sbTrace.append( "\nWebService URL : " ).append( strUrl );
         sbTrace.append( "\nParameters : " );
 
         for ( Entry<String, String> parameter : mapParameters.entrySet( ) )
         {
             sbTrace.append( "\n   " ).append( parameter.getKey( ) ).append( ":" ).append( parameter.getValue( ) );
         }
 
         sbTrace.append( "\nSecurity : " );
         sbTrace.append( "\nValues used for the request signature : " );
 
         for ( String strValue : listElements )
         {
             sbTrace.append( "\n   " ).append( strValue );
         }
 
         if ( authenticator instanceof RequestHashAuthenticator )
         {
             RequestHashAuthenticator auth = (RequestHashAuthenticator) authenticator;
             String strTimestamp = "" + new Date( ).getTime( );
             String strSignature = auth.buildSignature( listElements, strTimestamp );
             sbTrace.append( "\n Request Authenticator : RequestHashAuthenticator" );
             sbTrace.append( "\n Timestamp sample : " ).append( strTimestamp );
             sbTrace.append( "\n Signature for this timestamp : " ).append( strSignature );
         }
         else
             if ( authenticator instanceof HeaderHashAuthenticator )
             {
                 HeaderHashAuthenticator auth = (HeaderHashAuthenticator) authenticator;
                 String strTimestamp = Long.toString( new Date( ).getTime( ) );
                 String strSignature = auth.buildSignature( listElements, strTimestamp );
                 sbTrace.append( "\n Request Authenticator : HeaderHashAuthenticator" );
                 sbTrace.append( "\n Timestamp sample : " ).append( strTimestamp );
                 sbTrace.append( "\n Signature for this timestamp : " ).append( strSignature );
             }
             else
                 if ( authenticator instanceof NoSecurityAuthenticator )
                 {
                     sbTrace.append( "\n No request authentification" );
                 }
                 else
                 {
                     sbTrace.append( "\n Unknown Request authenticator" );
                 }
 
         sbTrace.append( "\n --------------------------------------------------------------------" );
 
         return sbTrace.toString( );
     }
 }