/*
 * The Kuali Financial System, a comprehensive financial management system for higher education.
 * 
 * Copyright 2005-2014 The Kuali Foundation
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kuali.kfs.module.purap.dataaccess.impl;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;

import org.kuali.kfs.module.purap.dataaccess.B2BDao;
import org.kuali.kfs.module.purap.exception.B2BConnectionException;
import org.kuali.rice.core.framework.persistence.ojb.dao.PlatformAwareDaoBaseOjb;

public class B2BDaoImpl  extends PlatformAwareDaoBaseOjb  implements B2BDao {
    private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(B2BDaoImpl.class);

    /**
     * Take the request XML, post it to SciQuest, then get the response XML and return it.
     */
    public String sendPunchOutRequest(String request, String punchoutUrl) {
        LOG.debug("sendPunchOutRequest() started");

        try {
            URL url = new URL(punchoutUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setDoInput(true);
            conn.setDoOutput(true);
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-type", "text/xml");

            OutputStream out = conn.getOutputStream();
            OutputStreamWriter outw = new OutputStreamWriter(out, "UTF-8");
            outw.write(request);
            outw.flush();
            outw.close();
            out.flush();
            out.close();

            InputStream inp = conn.getInputStream();

            StringBuffer response = new StringBuffer();
            int i = inp.read();
            while (i >= 0) {
                if (i >= 0) {
                    response.append((char) i);
                }
                i = inp.read();
            }
            return response.toString();
        }
        catch (MalformedURLException e) {
            LOG.error("postPunchOutSetupRequestMessage() Error posting setup", e);
            throw new B2BConnectionException("Unable to connect to remote site for punchout.", e);
        }
        catch (ProtocolException e) {
            LOG.error("postPunchOutSetupRequestMessage() Error posting setup", e);
            throw new B2BConnectionException("Unable to connect to remote site for punchout.", e);
        }
        catch (UnsupportedEncodingException e) {
            LOG.error("postPunchOutSetupRequestMessage() Error posting setup", e);
            throw new B2BConnectionException("Unable to connect to remote site for punchout.", e);
        }
        catch (IOException e) {
            LOG.error("postPunchOutSetupRequestMessage() Error posting setup", e);
            throw new B2BConnectionException("Unable to connect to remote site for punchout.", e);
        }
    }
}