/**
* Copyright (C) 2013 - 2015 the enviroCar community
* <p>
* This file is part of the enviroCar app.
* <p>
* The enviroCar app 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.
* <p>
* The enviroCar app 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.
* <p>
* You should have received a copy of the GNU General Public License along
* with the enviroCar app. If not, see http://www.gnu.org/licenses/.
*/
package org.envirocar.remote.dao;
import com.google.common.base.Preconditions;
import com.squareup.okhttp.ResponseBody;
import org.envirocar.core.UserManager;
import org.envirocar.core.dao.TrackDAO;
import org.envirocar.core.entity.Track;
import org.envirocar.core.exception.DataCreationFailureException;
import org.envirocar.core.exception.DataRetrievalFailureException;
import org.envirocar.core.exception.DataUpdateFailureException;
import org.envirocar.core.exception.NotConnectedException;
import org.envirocar.core.exception.ResourceConflictException;
import org.envirocar.core.exception.UnauthorizedException;
import org.envirocar.core.logging.Logger;
import org.envirocar.remote.service.EnviroCarService;
import org.envirocar.remote.service.TrackService;
import org.envirocar.remote.util.EnvirocarServiceUtils;
import java.io.IOException;
import java.util.List;
import javax.inject.Inject;
import javax.inject.Singleton;
import retrofit.Call;
import retrofit.Response;
import rx.Observable;
import rx.Subscriber;
/**
* TODO JavaDoc
*
* @author dewall
*/
@Singleton
public class RemoteTrackDAO extends BaseRemoteDAO<TrackDAO, TrackService> implements TrackDAO {
private static final Logger LOG = Logger.getLogger(RemoteTrackDAO.class);
/**
* Constructor.
*
* @param cacheDao
* @param service
* @param userManager
*/
@Inject
public RemoteTrackDAO(CacheTrackDAO cacheDao, TrackService service, UserManager userManager) {
super(cacheDao, service, userManager);
}
@Override
public Track getTrackById(String id) throws DataRetrievalFailureException,
NotConnectedException, UnauthorizedException {
LOG.info(String.format("getTrack(%s)", id));
final TrackService trackService = EnviroCarService.getTrackService();
Call<Track> trackCall = trackService.getTrack(userManager.getUser().getUsername(), id);
try {
// Execute the request call
Response<Track> trackResponse = executeCall(trackCall);
// If it was successful, then return the track.
LOG.debug("getTrack() was successful");
return trackResponse.body();
} catch (ResourceConflictException e) {
throw new DataRetrievalFailureException(e);
} catch (IOException e) {
throw new NotConnectedException(e);
}
}
@Override
public Observable<Track> getTrackByIdObservable(final String id) {
return Observable.create(new Observable.OnSubscribe<Track>() {
@Override
public void call(Subscriber<? super Track> subscriber) {
try {
Track remoteTracks = getTrackById(id);
subscriber.onNext(remoteTracks);
subscriber.onCompleted();
} catch (Exception e) {
subscriber.onError(e);
}
}
});
}
@Override
public Integer getUserTrackCount() throws DataRetrievalFailureException,
NotConnectedException, UnauthorizedException {
LOG.info("getUserTrackCount()");
final TrackService trackService = EnviroCarService.getTrackService();
Call<ResponseBody> allTracksCountCall = trackService.getAllTracksCountOfUser(
userManager.getUser().getUsername());
try {
// Execute the request call.
Response<ResponseBody> allTracksCountResponse = allTracksCountCall.execute();
// If the request call was not successful, then assert the status code and throw an
// exceptiom
if (!allTracksCountResponse.isSuccess()) {
EnvirocarServiceUtils.assertStatusCode(allTracksCountResponse.code(),
allTracksCountResponse.errorBody().toString());
return null;
}
// Get the page count with a track limit of 1 per page (?limit=1). This corresponds
// to the number of global tracks and return it.
int pageCount = EnvirocarServiceUtils.resolvePageCount(allTracksCountResponse);
LOG.info(String.format("getTotalTrackCount() with a tracksize of %s", "" + pageCount));
return pageCount;
} catch (IOException e) {
throw new NotConnectedException(e);
} catch (ResourceConflictException e) {
throw new DataRetrievalFailureException(e);
}
}
@Override
public Integer getTotalTrackCount() throws NotConnectedException,
DataRetrievalFailureException {
LOG.info("getTotalTrackCount()");
final TrackService trackService = EnviroCarService.getTrackService();
Call<ResponseBody> allTracksCountCall = trackService.getAllTracksCount();
try {
// Execute the request call.
Response<ResponseBody> allTracksCountResponse = allTracksCountCall.execute();
// If the request call was not successful, then assert the status code and throw an
// exceptiom
if (!allTracksCountResponse.isSuccess()) {
EnvirocarServiceUtils.assertStatusCode(allTracksCountResponse.code(),
allTracksCountResponse.errorBody().toString());
return null;
}
// Get the page count with a track limit of 1 per page (?limit=1). This corresponds
// to the number of global tracks and return it.
int pageCount = EnvirocarServiceUtils.resolvePageCount(allTracksCountResponse);
LOG.info(String.format("getTotalTrackCount() with a tracksize of %s", pageCount));
return pageCount;
} catch (IOException e) {
throw new NotConnectedException(e);
} catch (Exception e) {
throw new DataRetrievalFailureException(e);
}
}
@Override
public Track createTrack(Track track) throws DataCreationFailureException,
NotConnectedException, ResourceConflictException, UnauthorizedException {
LOG.info("createTrack()");
// check whether the user is logged in
if (!userManager.isLoggedIn()) {
throw new UnauthorizedException("The user is not logged in");
}
// Initiate the remoteService and its call
final TrackService trackService = EnviroCarService.getTrackService();
Call<ResponseBody> uploadTrackCall =
trackService.uploadTrack(userManager.getUser().getUsername(), track);
try {
Response<ResponseBody> uploadTrackResponse = uploadTrackCall.execute();
if (!uploadTrackResponse.isSuccess()) {
LOG.severe("Error while uploading track: " + uploadTrackResponse.message());
EnvirocarServiceUtils.assertStatusCode(uploadTrackResponse.code(),
uploadTrackResponse.message());
}
// Resolve the location where the track is stored.
String location = EnvirocarServiceUtils.resolveRemoteLocation(uploadTrackResponse);
LOG.info("Uploaded remote location: " + location);
// Set the remoteID ...
track.setRemoteID(location.substring(location.lastIndexOf('/') + 1, location.length()));
// ... and return the track;
return track;
} catch (IOException e) {
throw new DataCreationFailureException(e);
} catch (ResourceConflictException e) {
throw new NotConnectedException(e);
}
}
@Override
public Observable<Track> createTrackObservable(Track track) {
return Observable.create(new Observable.OnSubscribe<Track>() {
@Override
public void call(Subscriber<? super Track> subscriber) {
LOG.info("call: creating remote track.");
subscriber.onStart();
try {
subscriber.onNext(createTrack(track));
} catch (DataCreationFailureException |
NotConnectedException |
ResourceConflictException |
UnauthorizedException e) {
LOG.error(e.getMessage(), e);
subscriber.onError(e);
}
subscriber.onCompleted();
}
});
}
@Override
public List<Track> getTrackIds() throws NotConnectedException, UnauthorizedException {
return getTrackIds(100);
}
public List<Track> getTrackIds(int limit) throws NotConnectedException,
UnauthorizedException {
return getTrackIds(limit, 1);
}
@Override
public List<Track> getTrackIds(int limit, int page) throws NotConnectedException,
UnauthorizedException {
final TrackService trackService = EnviroCarService.getTrackService();
Call<List<Track>> remoteTrackCall = trackService.getTrackIds(userManager.getUser()
.getUsername());
try {
// Execute the call
Response<List<Track>> remoteTracksResponse = remoteTrackCall.execute();
if (!remoteTracksResponse.isSuccess()) {
LOG.severe("Error while retrieving the list of remote tracks");
EnvirocarServiceUtils.assertStatusCode(remoteTracksResponse.code(),
remoteTracksResponse.message());
}
// Return the list of remotetracks.
return remoteTracksResponse.body();
} catch (IOException e) {
throw new NotConnectedException(e);
} catch (ResourceConflictException e) {
throw new NotConnectedException(e);
}
}
@Override
public Observable<List<Track>> getTrackIdsObservable() {
return Observable.create(new Observable.OnSubscribe<List<Track>>() {
@Override
public void call(Subscriber<? super List<Track>> subscriber) {
try {
List<Track> remoteTrackIds = getTrackIds();
subscriber.onNext(remoteTrackIds);
subscriber.onCompleted();
} catch (Exception e) {
subscriber.onError(e);
}
}
});
}
@Override
public Observable<List<Track>> getTrackIdsObservable(final int limit, final int page) {
return Observable.create(
new Observable.OnSubscribe<List<Track>>() {
@Override
public void call(Subscriber<? super List<Track>> subscriber) {
try {
List<Track> remoteTracks = getTrackIds(limit, page);
subscriber.onNext(remoteTracks);
subscriber.onCompleted();
} catch (Exception e) {
subscriber.onError(e);
}
}
}
);
}
@Override
public void deleteTrack(Track track) throws DataUpdateFailureException,
NotConnectedException, UnauthorizedException {
Preconditions.checkState(track.getRemoteID() != null, "No RemoteID for this Track.");
Preconditions.checkState(track.isRemoteTrack(), "Track is not a remote track. Track " +
"cannot be deleted");
String remoteID = track.getRemoteID();
LOG.info(String.format("deleteRemoteTrack(%s)", remoteID));
// If not logged in, then throw an exception
if (!userManager.isLoggedIn()) {
throw new UnauthorizedException("No User logged in.");
}
// Init the retrofit remoteService endpoint and the delete call
final TrackService trackService = EnviroCarService.getTrackService();
Call<ResponseBody> deleteTrackCall = trackService.deleteTrack(userManager.getUser()
.getUsername(), remoteID);
try {
// Execute the call
Response<ResponseBody> deleteTrackResponse = deleteTrackCall.execute();
// Check whether the call was successful or not
if (!deleteTrackResponse.isSuccess()) {
LOG.warn(String.format("deleteLocalTrack(): Error while deleting remote track."));
EnvirocarServiceUtils.assertStatusCode(deleteTrackResponse.code(),
deleteTrackResponse.message());
}
} catch (IOException e) {
throw new NotConnectedException(e);
} catch (ResourceConflictException e) {
throw new NotConnectedException(e);
} catch (Exception e) {
LOG.warn("WARNING!!!");
throw e;
}
}
}