git.maemo.org Git - situare/blob - src/situareservice/situareservice.cpp

   1 /*
   2    Situare - A location system for Facebook
   3    Copyright (C) 2010  Ixonos Plc. Authors:
   4
   5       Henri Lampela - henri.lampela@ixonos.com
   6       Sami Rämö - sami.ramo@ixonos.com
   7
   8    Situare is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License
  10    version 2 as published by the Free Software Foundation.
  11
  12    Situare is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with Situare; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  20    USA.
  21 */
  22
  23 #include <qjson/parser.h>
  24
  25 #include <QDebug>
  26 #include <QNetworkReply>
  27 #include <QPixmap>
  28 #include <QStringList>
  29 #include <QtAlgorithms>
  30 #include <QtGlobal>
  31
  32 #include "../error.h"
  33 #include "network/networkaccessmanager.h"
  34 #include "situarecommon.h"
  35 #include "ui/avatarimage.h"
  36
  37 #include "situareservice.h"
  38
  39 SituareService::SituareService(QObject *parent)
  40         : QObject(parent),
  41         m_user(0)
  42 {
  43     qDebug() << __PRETTY_FUNCTION__;
  44
  45     m_networkManager = new NetworkAccessManager(this);
  46     connect(m_networkManager, SIGNAL(finished(QNetworkReply*)),
  47             this, SLOT(requestFinished(QNetworkReply*)), Qt::QueuedConnection);
  48
  49     m_imageFetcher = new ImageFetcher(new NetworkAccessManager(this), this);
  50     connect(this, SIGNAL(fetchImage(QUrl)),
  51             m_imageFetcher, SLOT(fetchImage(QUrl)));
  52     connect(m_imageFetcher, SIGNAL(imageReceived(QUrl,QPixmap)),
  53             this, SLOT(imageReceived(QUrl, QPixmap)));
  54     connect(m_imageFetcher, SIGNAL(error(int, int)),
  55             this, SIGNAL(error(int, int)));
  56 }
  57
  58 SituareService::~SituareService()
  59 {
  60     qDebug() << __PRETTY_FUNCTION__;
  61
  62     if(m_user) {
  63         delete m_user;
  64         m_user = 0;
  65     }
  66
  67     qDeleteAll(m_friendsList.begin(), m_friendsList.end());
  68     m_friendsList.clear();
  69 }
  70
  71 void SituareService::addProfileImages(const QList<QUrl> &imageUrlList)
  72 {
  73     qDebug() << __PRETTY_FUNCTION__;
  74
  75     foreach(QUrl url, imageUrlList) {
  76         emit fetchImage(url);
  77     }
  78 }
  79
  80 void SituareService::appendAccessToken(QString &requestUrl)
  81 {
  82     qDebug() << __PRETTY_FUNCTION__;
  83
  84     requestUrl.append(m_session);
  85 }
  86
  87 void SituareService::buildRequest(const QString &script, const QHash<QString, QString> &parameters)
  88 {
  89     qDebug() << __PRETTY_FUNCTION__;
  90
  91     const QString PARAMETER_KEY_API = "api";
  92     const QString PARAMETER_VALUE_API = "2.0";
  93
  94     QString url = SITUARE_URL;
  95     url.append(script);
  96     url.append("?");
  97
  98     // append default api version parameter if not yet specified
  99 //    if (!parameters.contains(PARAMETER_KEY_API))
 100 //        url.append(PARAMETER_KEY_API + "=" + PARAMETER_VALUE_API + "&");
 101
 102     // append parameters
 103     if (!parameters.isEmpty()) {
 104         QHash<QString, QString>::const_iterator i = parameters.constBegin();
 105         while (i != parameters.constEnd()) {
 106             url.append(i.key());
 107             url.append("=");
 108             url.append(i.value());
 109             url.append("&");
 110             i++;
 111         }
 112     }
 113
 114     /// @todo BUG: Url parameter strings are not url escaped
 115
 116 //    qWarning() << __PRETTY_FUNCTION__ << "request url with parameters:" << url;
 117
 118     if (!m_session.isEmpty()) {
 119         appendAccessToken(url);
 120         sendRequest(url);
 121     } else {
 122         emit error(ErrorContext::SITUARE, SituareError::SESSION_EXPIRED);
 123     }
 124 }
 125
 126 void SituareService::clearUserData()
 127 {
 128     qDebug() << __PRETTY_FUNCTION__;
 129
 130     qDeleteAll(m_friendsList.begin(), m_friendsList.end());
 131     m_friendsList.clear();
 132
 133     if(m_user) {
 134         delete m_user;
 135         m_user = 0;
 136     }
 137     emit userDataChanged(m_user, m_friendsList);
 138 }
 139
 140 QString SituareService::degreesToString(double degrees)
 141 {
 142     qDebug() << __PRETTY_FUNCTION__;
 143
 144     // one scene pixel is about 5.4e-6 degrees, the integer part is max three digits and one
 145     // additional digit is added for maximum precision
 146     const int PRECISION = 10;
 147
 148     return QString::number(degrees, 'f', PRECISION);
 149 }
 150
 151 void SituareService::fetchLocations()
 152 {
 153     qDebug() << __PRETTY_FUNCTION__;
 154
 155     QHash<QString, QString> parameters;
 156     parameters.insert("extra_user_data", NORMAL_SIZE_PROFILE_IMAGE);
 157
 158     buildRequest(GET_LOCATIONS, parameters);
 159 }
 160
 161 void SituareService::imageReceived(const QUrl &url, const QPixmap &image)
 162 {
 163     qDebug() << __PRETTY_FUNCTION__;
 164     qDebug() << "Image URL: " << url << " size :" << image.size();
 165
 166     // assign facebook silhouette image to all who doesn't have a profile image
 167     if(url == QUrl(SILHOUETTE_URL)) {
 168         if(m_user->profileImageUrl().isEmpty()) {
 169             m_user->setProfileImage(AvatarImage::create(image, AvatarImage::Large));
 170             emit imageReady(m_user);
 171         }
 172         foreach(User *friendItem, m_friendsList) {
 173             if(friendItem->profileImageUrl().isEmpty()) {
 174                 friendItem->setProfileImage(AvatarImage::create(image, AvatarImage::Small));
 175                 emit imageReady(friendItem);
 176             }
 177         }
 178     }
 179
 180     if (m_user->profileImageUrl() == url) {
 181         m_user->setProfileImage(AvatarImage::create(image, AvatarImage::Large));
 182         emit imageReady(m_user);
 183     }
 184
 185     foreach(User *friendItem, m_friendsList) {
 186         if(friendItem->profileImageUrl() == url) {
 187             friendItem->setProfileImage(AvatarImage::create(image, AvatarImage::Small));
 188             emit imageReady(friendItem);
 189         }
 190     }
 191 }
 192
 193 void SituareService::parseUserData(const QByteArray &jsonReply)
 194 {
 195     qDebug() << __PRETTY_FUNCTION__;
 196
 197     m_defaultImage = false;
 198
 199     QJson::Parser parser;
 200     bool ok;
 201
 202     QVariantMap result = parser.parse (jsonReply, &ok).toMap();
 203     if (!ok) {
 204         emit error(ErrorContext::SITUARE, SituareError::INVALID_JSON);
 205         return;
 206     } else {
 207
 208         if(result.contains("ErrorCode")) {
 209             QVariant errorVariant = result.value("ErrorCode");
 210             emit error(ErrorContext::SITUARE, errorVariant.toInt());
 211             return;
 212         } else if(result.contains("user")) {
 213
 214             QVariant userVariant = result.value("user");
 215             QMap<QString, QVariant> userMap = userVariant.toMap();
 216
 217             GeoCoordinate coordinates(userMap["latitude"].toReal(), userMap["longitude"].toReal());
 218
 219             QUrl imageUrl = userMap[NORMAL_SIZE_PROFILE_IMAGE].toUrl();
 220
 221             if(imageUrl.isEmpty()) {
 222                 // user doesn't have profile image, so we need to get him a silhouette image
 223                 m_defaultImage = true;
 224             }
 225
 226             QString address = userMap["address"].toString();
 227             if(address.isEmpty()) {
 228                 QStringList location;
 229                 location.append(QString::number(coordinates.latitude()));
 230                 location.append(QString::number(coordinates.longitude()));
 231                 address = location.join(", ");
 232             }
 233
 234             User user = User(address, coordinates, userMap["name"].toString(),
 235                           userMap["note"].toString(), imageUrl, userMap["timestamp"].toString(),
 236                           true, userMap["uid"].toString());
 237
 238             QList<User> tmpFriendsList;
 239
 240             foreach (QVariant friendsVariant, result["friends"].toList()) {
 241               QMap<QString, QVariant> friendMap = friendsVariant.toMap();
 242               QVariant distance = friendMap["distance"];
 243               QMap<QString, QVariant> distanceMap = distance.toMap();
 244
 245               GeoCoordinate coordinates(friendMap["latitude"].toReal(),friendMap["longitude"].toReal());
 246
 247               QUrl imageUrl = friendMap["profile_pic"].toUrl();
 248
 249               if(imageUrl.isEmpty()) {
 250                   // friend doesn't have profile image, so we need to get him a silhouette image
 251                   m_defaultImage = true;
 252               }
 253
 254               QString address = friendMap["address"].toString();
 255               if(address.isEmpty()) {
 256                   QStringList location;
 257                   location.append(QString::number(coordinates.latitude()));
 258                   location.append(QString::number(coordinates.longitude()));
 259                   address = location.join(", ");
 260               }
 261
 262               User buddy = User(address, coordinates, friendMap["name"].toString(),
 263                                friendMap["note"].toString(), imageUrl,
 264                                friendMap["timestamp"].toString(),
 265                                false, friendMap["uid"].toString(), distanceMap["units"].toString(),
 266                                distanceMap["value"].toDouble());
 267
 268               tmpFriendsList.append(buddy);
 269             }
 270
 271             QList<QUrl> imageUrlList; // url list for images
 272
 273             // set unchanged profile images or add new images to imageUrlList for downloading
 274             if(m_user) {
 275                 if(m_user->profileImageUrl() != user.profileImageUrl()) {
 276                     if(!user.profileImageUrl().isEmpty())
 277                         imageUrlList.append(user.profileImageUrl());
 278                 } else {
 279                     user.setProfileImage(m_user->profileImage());
 280                 }
 281             } else {
 282                 if(!user.profileImageUrl().isEmpty())
 283                     imageUrlList.append(user.profileImageUrl());
 284             }
 285
 286             // clear old user object
 287             if(m_user) {
 288                 delete m_user;
 289                 m_user = 0;
 290             }
 291
 292             // create new user object from temporary user object
 293             m_user = new User(user);
 294
 295             // set unchanged profile images or add new images to imageUrlList for downloading
 296             if(!m_friendsList.isEmpty()) {
 297                 foreach(User tmpBuddy, tmpFriendsList) {
 298                     if(!tmpBuddy.profileImageUrl().isEmpty()) {
 299                         bool found = false;
 300                         foreach(User *buddy, m_friendsList) {
 301                             if(tmpBuddy.profileImageUrl() == buddy->profileImageUrl()) {
 302                                 tmpBuddy.setProfileImage(buddy->profileImage());
 303                                 found = true;
 304                                 break;
 305                             }
 306                         }
 307                         if(!found && !tmpBuddy.profileImageUrl().isEmpty())
 308                             imageUrlList.append(tmpBuddy.profileImageUrl());
 309                     }
 310                 }
 311             } else {
 312                 foreach(User buddy, tmpFriendsList) {
 313                     if(!buddy.profileImageUrl().isEmpty())
 314                         imageUrlList.append(buddy.profileImageUrl());
 315                 }
 316             }
 317
 318             // clear old friendlist
 319             qDeleteAll(m_friendsList.begin(), m_friendsList.end());
 320             m_friendsList.clear();
 321
 322             // populate new friendlist with temporary friendlist's data
 323             foreach(User tmpFriendItem, tmpFriendsList) {
 324                 User *friendItem = new User(tmpFriendItem);
 325                 m_friendsList.append(friendItem);
 326             }
 327             tmpFriendsList.clear();
 328
 329             emit userDataChanged(m_user, m_friendsList);
 330
 331             // set silhouette image to imageUrlList for downloading
 332             if(m_defaultImage)
 333                 imageUrlList.append(QUrl(SILHOUETTE_URL));
 334
 335             addProfileImages(imageUrlList);
 336             imageUrlList.clear();
 337         } else {
 338             QVariant address = result.value("address");
 339             if(!address.toString().isEmpty()) {
 340                 emit reverseGeoReady(address.toString());
 341             } else {
 342                 QStringList coordinates;
 343                 coordinates.append(result.value("lat").toString());
 344                 coordinates.append(result.value("lon").toString());
 345
 346                 emit error(ErrorContext::SITUARE, SituareError::ADDRESS_RETRIEVAL_FAILED);
 347                 emit reverseGeoReady(coordinates.join(", "));
 348             }
 349         }
 350     }
 351 }
 352
 353 void SituareService::requestFinished(QNetworkReply *reply)
 354 {
 355     qDebug() << __PRETTY_FUNCTION__;
 356
 357     //Reply from situare
 358     if (m_currentRequests.contains(reply)) {
 359
 360         qDebug() << "BytesAvailable: " << reply->bytesAvailable();
 361
 362         if (reply->error()) {
 363             emit error(ErrorContext::NETWORK, reply->error());
 364         } else {
 365             QByteArray replyArray = reply->readAll();
 366             qDebug() << "Reply from: " << reply->url() << "reply " << replyArray;
 367
 368             if(replyArray == ERROR_LAT.toAscii()) {
 369                 qDebug() << "Error: " << ERROR_LAT;
 370                 emit error(ErrorContext::SITUARE, SituareError::UPDATE_FAILED);
 371             } else if(replyArray == ERROR_LON.toAscii()) {
 372                 qDebug() << "Error: " << ERROR_LON;
 373                 emit error(ErrorContext::SITUARE, SituareError::UPDATE_FAILED);
 374             } else if(replyArray.contains(ERROR_SESSION.toAscii())) {
 375                 qDebug() << "Error: " << ERROR_SESSION;
 376                 emit error(ErrorContext::SITUARE, SituareError::SESSION_EXPIRED);
 377             } else if(replyArray.startsWith(OPENING_BRACE_MARK.toAscii())) {
 378                 qDebug() << "JSON string";
 379                 parseUserData(replyArray);
 380             } else if(replyArray.isEmpty()) {
 381                 if(reply->url().toString().contains(UPDATE_LOCATION.toAscii())) {
 382                     emit updateWasSuccessful();
 383                 } else {
 384                     // session credentials are invalid
 385                     emit error(ErrorContext::SITUARE, SituareError::SESSION_EXPIRED);
 386                 }
 387             } else {
 388                 // unknown reply
 389                 emit error(ErrorContext::SITUARE, SituareError::ERROR_GENERAL);
 390             }
 391         }
 392         m_currentRequests.removeAll(reply);
 393         reply->deleteLater();
 394     }
 395 }
 396
 397 void SituareService::reverseGeo(const GeoCoordinate &coordinates)
 398 {
 399     qDebug() << __PRETTY_FUNCTION__;
 400
 401     QHash<QString, QString> parameters;
 402     parameters.insert("lat", degreesToString(coordinates.latitude()));
 403     parameters.insert("lon", degreesToString(coordinates.longitude()));
 404     parameters.insert("format", "json");
 405
 406     buildRequest(REVERSE_GEO, parameters);
 407 }
 408
 409 void SituareService::sendRequest(const QString &requestUrl)
 410 {
 411     qDebug() << __PRETTY_FUNCTION__ << "requestUrl" << requestUrl;
 412
 413     // make and send the request
 414     QNetworkRequest request;
 415     request.setUrl(QUrl(requestUrl));
 416     request.setAttribute(QNetworkRequest::CacheSaveControlAttribute, false);
 417     QNetworkReply *reply = m_networkManager->get(request, true);
 418     m_currentRequests.append(reply);
 419 }
 420
 421 void SituareService::updateSession(const QString &session)
 422 {
 423     qDebug() << __PRETTY_FUNCTION__;
 424
 425     m_session = session;
 426
 427     if (m_session.isEmpty())
 428         clearUserData();
 429 }
 430
 431 void SituareService::updateLocation(const GeoCoordinate &coordinates, const QString &status,
 432                                     const bool &publish)
 433 {
 434     qDebug() << __PRETTY_FUNCTION__;
 435
 436     QHash<QString, QString> parameters;
 437     parameters.insert("lat", degreesToString(coordinates.latitude()));
 438     parameters.insert("lon", degreesToString(coordinates.longitude()));
 439     parameters.insert("publish", publish ? "true" : "false");
 440     parameters.insert("data", status); ///< @todo if !empty ???
 441
 442     buildRequest(UPDATE_LOCATION, parameters);
 443 }