source: extensions/jiwigo/trunk/src/main/java/fr/mael/jiwigo/transverse/session/SessionManager.java @ 6840

package fr.mael.jiwigo.transverse.session;

import java.io.IOException;
import java.io.InputStream;

import javax.swing.JOptionPane;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.PostMethod;
import org.jdom.Document;
import org.jdom.JDOMException;

import fr.mael.jiwigo.transverse.enumeration.MethodsEnum;
import fr.mael.jiwigo.transverse.util.Messages;
import fr.mael.jiwigo.transverse.util.Outil;

/**
   Copyright (c) 2010, Mael
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of jiwigo 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 Mael 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.
   
 * @author mael
 * Gestionnaire de connexion
 */
public class SessionManager {
    /**
     * Logger
     */
    public static final org.apache.commons.logging.Log LOG = org.apache.commons.logging.LogFactory
            .getLog(SessionManager.class);
    /**
     * Le login entré
     */
    private String login;
    /**
     * Le mot de passe entré
     */
    private String motDePasse;
    /**
     * l'url du site
     */
    private String url;
    /**
     * le client http
     */
    private HttpClient client;

    /**
     * Constructeur
     * @param login le login
     * @param motDePasse le mot de passe
     * @param url l'url du site
     */
    public SessionManager(String login, String motDePasse, String url) {
        this.login = login;
        this.motDePasse = motDePasse;
        this.url = url + "/ws.php";
        client = new HttpClient();
        //utilisation d'un useragent linux, parce que c'est mieux 8)
        client.getParams().setParameter("http.useragent",
                "Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1");
    }

    /**
     * Methode de connexion
     * @return true si la connexion s'est bien deroulee
     */
    public boolean processLogin() {
        Document doc;
        try {
            doc = executerReturnDocument(MethodsEnum.LOGIN.getLabel(), "username", login, "password", motDePasse);
            return Outil.checkOk(doc);
        } catch (Exception e) {
            LOG.error(Outil.getStackTrace(e));
        }
        return false;

    }

    /**
     * Execute une methode sur le web service et retourne le resultat sous forme de string
     * @param methode la methode a executer
     * @param parametres les parametres a  ajouter a la methode. doit etre un nombre pair : la cle suivie de sa valeur
     * @return le resultat
     */
    public String executerReturnString(String methode, String... parametres) {
        if (parametres.length % 2 != 0 && !(parametres == null)) {
            try {
                throw new Exception("Le nombre de parametres doit etre pair");
            } catch (Exception e) {
                LOG.error(Outil.getStackTrace(e));
                return null;
            }
        }
        PostMethod method = new PostMethod(url);
        method.addParameter("method", methode);
        for (int i = 0; i < parametres.length; i += 2) {
            method.addParameter(parametres[i], parametres[i + 1]);
        }
        //begin bug:0001833
        method.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");
        //end

        try {
            client.executeMethod(method);
            InputStream streamResponse = method.getResponseBodyAsStream();
            //      System.out.println(Outil.readInputStreamAsString(streamResponse));
            //      String toReturn = method.getResponseBodyAsString();
            String toReturn = Outil.readInputStreamAsString(streamResponse);
            LOG.debug(toReturn);
            return toReturn;
        } catch (HttpException e) {
            // TODO Auto-generated catch block
            LOG.error(Outil.getStackTrace(e));
        } catch (IOException e) {
            // TODO Auto-generated catch block
            LOG.error(Outil.getStackTrace(e));
        } catch (IllegalArgumentException e) {
            LOG.error(Outil.getStackTrace(e));
            JOptionPane.showMessageDialog(null, Messages.getMessage("connexionDialog_connexionError"), Messages
                    .getMessage("error"), JOptionPane.ERROR_MESSAGE);
        } finally {
            method.releaseConnection();
        }
        return null;

    }

    /**
     * Execute une methode sur le webservice et renvoie le resultat sous form de document jdom
     * @param methode la methode a executer
     * @param parametres les parametres a  ajouter a la methode. doit etre un nombre pair : la cle suivie de sa valeur
     * @return le resultat
     * @throws IOException 
     */
    public Document executerReturnDocument(String methode, String... parametres) throws IOException {
        try {
            return Outil.stringToDocument(executerReturnString(methode, parametres));
        } catch (JDOMException e) {
            // TODO Auto-generated catch block
            LOG.error(Outil.getStackTrace(e));
        }
        return null;

    }

    /**
     * Execute une methode sur le webservice et renvoie le resultat sous form de document jdom
     * @param methode la methode a executer
     * @return le resultat
     */
    public Document executerReturnDocument(String methode) {
        try {
            return Outil.stringToDocument(executerReturnString(methode));
        } catch (JDOMException e) {
            // TODO Auto-generated catch block
            LOG.error(Outil.getStackTrace(e));
        } catch (IOException e) {
            // TODO Auto-generated catch block
            LOG.error(Outil.getStackTrace(e));
        }
        return null;

    }

    /**
     * @return the login
     */
    public String getLogin() {
        return login;
    }

    /**
     * @param login the login to set
     */
    public void setLogin(String login) {
        this.login = login;
    }

    /**
     * @return the motDePasse
     */
    public String getMotDePasse() {
        return motDePasse;
    }

    /**
     * @param motDePasse the motDePasse to set
     */
    public void setMotDePasse(String motDePasse) {
        this.motDePasse = motDePasse;
    }

    /**
     * @return the url
     */
    public String getUrl() {
        return url;
    }

    /**
     * @param url the url to set
     */
    public void setUrl(String url) {
        this.url = url;
    }

}