/*
 * Copyright 2009-2012 by KNURT Systeme (http://www.knurt.de)
 *
 * Licensed under the Creative Commons License Attribution-NonCommercial-ShareAlike 3.0 Unported;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://creativecommons.org/licenses/by-nc-sa/3.0/
 *
 * 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 de.knurt.fam.template.controller.letter;

import java.io.IOException;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.contrib.ssl.EasySSLProtocolSocketFactory;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.protocol.Protocol;
import org.json.JSONObject;

import de.knurt.fam.connector.FamConnector;
import de.knurt.fam.core.aspects.logging.FamLog;
import de.knurt.heinzelmann.util.nebc.BoardUnit;
import de.knurt.heinzelmann.util.query.QueryStringFactory;

/**
 * resolve the fam-service-pdf
 * 
 * @author Daniel Oltmanns <info@knurt.de>
 * @since 1.4.0 (06/13/2011)
 * 
 */
public class FamServicePDFResolver implements BoardUnit<JSONObject, PostMethod> {
  private String uri2Service;

  /**
   * default constructor with default uri to the pdf service as configured.
   * @since 08.04.2014
   */
  public FamServicePDFResolver() {
    this(FamConnector.uri2service("pdf"));
  }

  /**
   * constructor with uri to the pdf service to used.
   * use this constructor to use different pdf templates.
   * @since 08.04.2014
   * @param uri2Service to use for letter generator
   */
  public FamServicePDFResolver(String uri2Service) {
    this.uri2Service = uri2Service;
  }

  /** {@inheritDoc} */
  @Override
  @SuppressWarnings("deprecation")
  // TODO #11 kill uses of deprecations
  public PostMethod process(JSONObject datum) {

    // create connection
    Protocol easyhttps = new Protocol("https", new EasySSLProtocolSocketFactory(), 443);
    Protocol.registerProtocol("https", easyhttps);

    // request configured fam-service-pdf
    HttpClient client = new HttpClient();
    PostMethod post = new PostMethod(this.uri2Service);
    post.setQueryString(QueryStringFactory.get("json", datum.toString()).toString());

    // execute
    try {
      client.executeMethod(post);
    } catch (HttpException e) {
      FamLog.exception(e, 201106131407l);
    } catch (IOException e) {
      FamLog.exception(e, 201106131406l);
    }
    return post;
  }

}