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/*

 * Copyright 2010 Electronic Business Systems Ltd.

 *

 * This file is part of GSS.

 *

 * GSS is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * GSS 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.

 */

package gr.ebs.gss.server;

import gr.ebs.gss.client.exceptions.RpcException;

import gr.ebs.gss.server.domain.Invitation;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

/**

 * The servlet that handles registration invitations.

 *

 * @author past

 */

public class Invitations extends BaseServlet {

        /**

         * The request parameter name for the invitation code.

         */

        private static final String CODE_PARAM = "code";

        /**

         * The serial version UID of the class.

         */

        private static final long serialVersionUID = 1L;

        /**

         * The logger.

         */

        private static Log logger = LogFactory.getLog(Invitations.class);

        @Override

        public void service(HttpServletRequest request, HttpServletResponse response) throws IOException {

                String code = request.getParameter(CODE_PARAM);

                response.setContentType("text/html");

                // Validate input parameters.

                if (code == null || code.isEmpty()) {

                        response.sendRedirect("invites.jsp?error=" + encode("No code was specified"));

                        return;

                }

                try {

                        Invitation invite = getService().findInvite(code);

                        if (invite == null) {

                                response.sendRedirect("invites.jsp?code=&error=" + encode("The specified code was not found"));

                                return;

                        }

                        String firstname = invite.getFirstname() == null? "": invite.getFirstname();

                        String lastname = invite.getLastname() == null? "": invite.getLastname();

                        String email = invite.getEmail() == null? "": invite.getEmail();

                        response.sendRedirect("register.jsp?firstname=" + encode(firstname) +

                                        "&lastname=" + encode(lastname) + "&email=" + encode(email));

                } catch (RpcException e) {

                        logger.error(e);

                        handleException(response, encode("An error occurred while communicating with the service"));

                }

        }

        private void handleException(HttpServletResponse response, String error) throws IOException {

                String errorUrl = "invites.jsp?username=&firstname=&lastname=&email=&error=" + error;

                response.sendRedirect(errorUrl);

        }

}