org.envirocar.app.network.RestClient.java Source code

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Here is the source code for org.envirocar.app.network.RestClient.java

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/* 
 * enviroCar 2013
 * Copyright (C) 2013  
 * Martin Dueren, Jakob Moellers, Gerald Pape, Christopher Stephan
 *
 * This program 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.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 * 
 */

package org.envirocar.app.network;

import java.io.UnsupportedEncodingException;
import java.util.Locale;

import org.apache.http.entity.StringEntity;
import org.apache.http.message.BasicHeader;
import org.apache.http.protocol.HTTP;
import org.envirocar.app.application.ECApplication;
import org.envirocar.app.application.User;
import org.envirocar.app.dao.DAOProvider;
import org.envirocar.app.dao.SensorDAO;
import org.envirocar.app.logging.Logger;

import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.JsonHttpResponseHandler;
//TODO javadoc

public class RestClient {

    private static final Logger logger = Logger.getLogger(RestClient.class);

    private static AsyncHttpClient client;

    static {
        resetClient();
    }

    /**
     * start downloading the latest 5 tracks of the given user.
     * 
     * @param user the user
     * @param token the users token
     * @param limit the maximum track count
     * @param page the page (/tracks/ is a paging-enabled resource)
     * @param handler called on success or failure
     */
    public static void downloadTracks(String user, String token, int limit, int page,
            JsonHttpResponseHandler handler) {
        get(String.format(Locale.ENGLISH, "%s/users/%s/tracks?limit=%d&page=%d", ECApplication.BASE_URL, user,
                limit, page), handler, user, token);
    }

    /**
     * start downloading the latest 5 tracks of the given user.
     * 
     * @param user the user
     * @param token the users token
     * @param handler called on success or failure
     */
    public static void downloadTracks(String user, String token, JsonHttpResponseHandler handler) {
        downloadTracks(user, token, 5, 1, handler);
    }

    private static void resetClient() {
        client = new AsyncHttpClient();
        HTTPClient.setupClient(client.getHttpClient());
    }

    @Deprecated
    public static void deleteRemoteTrack(String user, String token, String id, JsonHttpResponseHandler handler) {
        setHeaders(user, token);
        client.delete(ECApplication.BASE_URL + "/users/" + user + "/tracks/" + id, handler);
    }

    public static void downloadTrack(String user, String token, String id, AsyncHttpResponseHandler handler) {
        get(ECApplication.BASE_URL + "/tracks/" + id, handler, user, token);
    }

    /**
     * @deprecated Use {@link DAOProvider#getSensorDAO()} / {@link SensorDAO#saveSensor(org.envirocar.app.model.Car, User)}
     * instead.
     */
    @Deprecated
    public static boolean createSensor(String jsonObj, String user, String token,
            AsyncHttpResponseHandler handler) {
        client.addHeader("Content-Type", "application/json");
        setHeaders(user, token);

        try {
            StringEntity se = new StringEntity(jsonObj);
            se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
            client.post(null, ECApplication.BASE_URL + "/sensors", se, "application/json", handler);
        } catch (UnsupportedEncodingException e) {
            logger.warn(e.getMessage(), e);
            return false;
        }
        return true;
    }

    private static void get(String url, AsyncHttpResponseHandler handler, String user, String token) {
        setHeaders(user, token);

        client.get(url, handler);
    }

    private static void put(String url, AsyncHttpResponseHandler handler, String contents, String user,
            String token) throws UnsupportedEncodingException {
        client.addHeader("Content-Type", "application/json");
        setHeaders(user, token);

        StringEntity se = new StringEntity(contents);
        se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));

        client.put(null, url, se, "application/json", handler);
    }

    private static void setHeaders(String user, String token) {
        client.addHeader("Accept-Encoding", "gzip");

        if (user != null)
            client.addHeader("X-User", user);

        if (token != null)
            client.addHeader("X-Token", token);

    }

    @Deprecated
    public static void downloadSensors(JsonHttpResponseHandler handler) {
        get(ECApplication.BASE_URL + "/sensors", handler);
    }

    private static void get(String url, JsonHttpResponseHandler handler) {
        get(url, handler, null, null);
    }

    public static void updateAcceptedTermsOfUseVersion(User user, String issuedDate,
            AsyncHttpResponseHandler handler) {
        String contents = String.format("{\"%s\": \"%s\"}", "acceptedTermsOfUseVersion", issuedDate);
        try {
            put(ECApplication.BASE_URL + "/users/" + user.getUsername(), handler, contents, user.getUsername(),
                    user.getToken());
        } catch (UnsupportedEncodingException e) {
            logger.warn(e.getMessage(), e);
        }
    }

    public static void removeUserSpecificHeaders() {
        resetClient();
    }
}