git.sur5r.net Git - minitube/blob - src/channelaggregator.cpp

   1 /* $BEGIN_LICENSE
   2
   3 This file is part of Minitube.
   4 Copyright 2009, Flavio Tordini <flavio.tordini@gmail.com>
   5
   6 Minitube is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 Minitube is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with Minitube.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 $END_LICENSE */
  20
  21 #include "channelaggregator.h"
  22 #include "ytchannel.h"
  23 #include "ytsearch.h"
  24 #include "searchparams.h"
  25 #include "database.h"
  26 #include "video.h"
  27 #ifdef APP_MAC
  28 #include "macutils.h"
  29 #endif
  30 #include "networkaccess.h"
  31
  32 namespace The {
  33     NetworkAccess* http();
  34 }
  35
  36 ChannelAggregator::ChannelAggregator(QObject *parent) : QObject(parent),
  37     unwatchedCount(-1),
  38     running(false),
  39     stopped(false),
  40     currentChannel(0) {
  41     checkInterval = 1800;
  42
  43     timer = new QTimer(this);
  44     timer->setInterval(60000 * 5);
  45     connect(timer, SIGNAL(timeout()), SLOT(run()));
  46 }
  47
  48 ChannelAggregator* ChannelAggregator::instance() {
  49     static ChannelAggregator* i = new ChannelAggregator();
  50     return i;
  51 }
  52
  53 void ChannelAggregator::start() {
  54     stopped = false;
  55     updateUnwatchedCount();
  56     QTimer::singleShot(0, this, SLOT(run()));
  57     if (!timer->isActive()) timer->start();
  58 }
  59
  60 void ChannelAggregator::stop() {
  61     timer->stop();
  62     stopped = true;
  63 }
  64
  65 YTChannel* ChannelAggregator::getChannelToCheck() {
  66     if (stopped) return 0;
  67     QSqlDatabase db = Database::instance().getConnection();
  68     QSqlQuery query(db);
  69     query.prepare("select user_id from subscriptions where checked<? "
  70                   "order by checked limit 1");
  71     query.bindValue(0, QDateTime::currentDateTimeUtc().toTime_t() - checkInterval);
  72     bool success = query.exec();
  73     if (!success) qWarning() << query.lastQuery() << query.lastError().text();
  74     if (query.next())
  75         return YTChannel::forId(query.value(0).toString());
  76     return 0;
  77 }
  78
  79 void ChannelAggregator::run() {
  80     if (running) return;
  81     if (!Database::exists()) return;
  82     running = true;
  83     newVideoCount = 0;
  84     updatedChannels.clear();
  85
  86     if (!Database::instance().getConnection().transaction())
  87         qWarning() << "Transaction failed" << __PRETTY_FUNCTION__;
  88
  89     processNextChannel();
  90 }
  91
  92 void ChannelAggregator::processNextChannel() {
  93     if (stopped) {
  94         running = false;
  95         return;
  96     }
  97     YTChannel* channel = getChannelToCheck();
  98     if (channel) {
  99         checkWebPage(channel);
 100     } else finish();
 101 }
 102
 103 void ChannelAggregator::checkWebPage(YTChannel *channel) {
 104     currentChannel = channel;
 105     QString url = "https://www.youtube.com/channel/" + channel->getChannelId() + "/videos";
 106     QObject *reply = The::http()->get(url);
 107
 108     connect(reply, SIGNAL(data(QByteArray)), SLOT(parseWebPage(QByteArray)));
 109     connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorWebPage(QNetworkReply*)));
 110 }
 111
 112 void ChannelAggregator::parseWebPage(const QByteArray &bytes) {
 113     bool hasNewVideos = true;
 114     QRegExp re = QRegExp("[\\?&]v=([0-9A-Za-z_-]+)");
 115     if (re.indexIn(bytes) != -1) {
 116         QString videoId = re.cap(1);
 117         QString latestVideoId = currentChannel->latestVideoId();
 118         // qDebug() << "Comparing" << videoId << latestVideoId;
 119         hasNewVideos = videoId != latestVideoId;
 120     }
 121     if (hasNewVideos) {
 122         reallyProcessChannel(currentChannel);
 123         currentChannel = 0;
 124     } else {
 125         currentChannel->updateChecked();
 126         currentChannel = 0;
 127         processNextChannel();
 128     }
 129 }
 130
 131 void ChannelAggregator::errorWebPage(QNetworkReply *reply) {
 132     Q_UNUSED(reply);
 133     reallyProcessChannel(currentChannel);
 134     currentChannel = 0;
 135 }
 136
 137 void ChannelAggregator::reallyProcessChannel(YTChannel *channel) {
 138     SearchParams *params = new SearchParams();
 139     params->setChannelId(channel->getChannelId());
 140     params->setSortBy(SearchParams::SortByNewest);
 141     params->setTransient(true);
 142     params->setPublishedAfter(channel->getChecked());
 143     YTSearch *videoSource = new YTSearch(params, this);
 144     connect(videoSource, SIGNAL(gotVideos(QList<Video*>)), SLOT(videosLoaded(QList<Video*>)));
 145     videoSource->loadVideos(50, 1);
 146
 147     channel->updateChecked();
 148 }
 149
 150 void ChannelAggregator::finish() {
 151     currentChannel = 0;
 152
 153     /*
 154     foreach (YTChannel *channel, updatedChannels)
 155         if (channel->updateNotifyCount())
 156             emit channelChanged(channel);
 157     updateUnwatchedCount();
 158     */
 159
 160     QSqlDatabase db = Database::instance().getConnection();
 161     if (!db.commit())
 162         qWarning() << "Commit failed" << __PRETTY_FUNCTION__;
 163
 164     /*
 165     QByteArray b = db.databaseName().right(20).toLocal8Bit();
 166     const char* s = b.constData();
 167     const int l = strlen(s);
 168     int t = 1;
 169     for (int i = 0; i < l; i++)
 170         t += t % 2 ? s[i] / l : s[i] / t;
 171     if (t != s[0]) return;
 172     */
 173
 174 #ifdef Q_OS_MAC
 175     if (newVideoCount > 0 && unwatchedCount > 0 && mac::canNotify()) {
 176         QString channelNames;
 177         const int total = updatedChannels.size();
 178         for (int i = 0; i < total; ++i) {
 179             YTChannel *channel = updatedChannels.at(i);
 180             channelNames += channel->getDisplayName();
 181             if (i < total-1) channelNames.append(", ");
 182         }
 183         channelNames = tr("By %1").arg(channelNames);
 184         int actualNewVideoCount = qMin(newVideoCount, unwatchedCount);
 185         mac::notify(tr("You have %n new video(s)", "", actualNewVideoCount),
 186                     channelNames, QString());
 187     }
 188 #endif
 189
 190     running = false;
 191 }
 192
 193 void ChannelAggregator::videosLoaded(const QList<Video*> &videos) {
 194     sender()->deleteLater();
 195
 196     foreach (Video* video, videos) {
 197         addVideo(video);
 198         qApp->processEvents();
 199     }
 200
 201     if (!videos.isEmpty()) {
 202         YTChannel *channel = YTChannel::forId(videos.first()->channelId());
 203         channel->updateNotifyCount();
 204         emit channelChanged(channel);
 205         updateUnwatchedCount();
 206         foreach (Video* video, videos) video->deleteLater();
 207     }
 208
 209     QTimer::singleShot(0, this, SLOT(processNextChannel()));
 210 }
 211
 212 void ChannelAggregator::updateUnwatchedCount() {
 213     if (!Database::exists()) return;
 214     QSqlDatabase db = Database::instance().getConnection();
 215     QSqlQuery query(db);
 216     query.prepare("select sum(notify_count) from subscriptions");
 217     bool success = query.exec();
 218     if (!success) qWarning() << query.lastQuery() << query.lastError().text();
 219     if (!query.next()) return;
 220     int newUnwatchedCount = query.value(0).toInt();
 221     if (newUnwatchedCount != unwatchedCount) {
 222         unwatchedCount = newUnwatchedCount;
 223         emit unwatchedCountChanged(unwatchedCount);
 224     }
 225 }
 226
 227 void ChannelAggregator::addVideo(Video *video) {
 228     QSqlDatabase db = Database::instance().getConnection();
 229
 230     QSqlQuery query(db);
 231     query.prepare("select count(*) from subscriptions_videos where video_id=?");
 232     query.bindValue(0, video->id());
 233     bool success = query.exec();
 234     if (!success) qWarning() << query.lastQuery() << query.lastError().text();
 235     if (!query.next()) return;
 236     int count = query.value(0).toInt();
 237     if (count > 0) return;
 238
 239     // qDebug() << "Inserting" << video->author() << video->title();
 240
 241     YTChannel *channel = YTChannel::forId(video->channelId());
 242     if (!channel) {
 243         qWarning() << "channelId not present in db" << video->channelId() << video->channelTitle();
 244         return;
 245     }
 246
 247     if (!updatedChannels.contains(channel))
 248         updatedChannels << channel;
 249
 250     uint now = QDateTime::currentDateTimeUtc().toTime_t();
 251     uint published = video->published().toTime_t();
 252     if (published > now) {
 253         qDebug() << "fixing publish time";
 254         published = now;
 255     }
 256
 257     query = QSqlQuery(db);
 258     query.prepare("insert into subscriptions_videos "
 259                   "(video_id,channel_id,published,added,watched,"
 260                   "title,author,user_id,description,url,thumb_url,views,duration) "
 261                   "values (?,?,?,?,?,?,?,?,?,?,?,?,?)");
 262     query.bindValue(0, video->id());
 263     query.bindValue(1, channel->getId());
 264     query.bindValue(2, published);
 265     query.bindValue(3, now);
 266     query.bindValue(4, 0);
 267     query.bindValue(5, video->title());
 268     query.bindValue(6, video->channelTitle());
 269     query.bindValue(7, video->channelId());
 270     query.bindValue(8, video->description());
 271     query.bindValue(9, video->webpage());
 272     query.bindValue(10, video->thumbnailUrl());
 273     query.bindValue(11, video->viewCount());
 274     query.bindValue(12, video->duration());
 275     success = query.exec();
 276     if (!success) qWarning() << query.lastQuery() << query.lastError().text();
 277
 278     newVideoCount++;
 279
 280     query = QSqlQuery(db);
 281     query.prepare("update subscriptions set updated=? where user_id=?");
 282     query.bindValue(0, published);
 283     query.bindValue(1, channel->getChannelId());
 284     success = query.exec();
 285     if (!success) qWarning() << query.lastQuery() << query.lastError().text();
 286 }
 287
 288 void ChannelAggregator::markAllAsWatched() {
 289     uint now = QDateTime::currentDateTimeUtc().toTime_t();
 290
 291     QSqlDatabase db = Database::instance().getConnection();
 292     QSqlQuery query(db);
 293     query.prepare("update subscriptions set watched=?, notify_count=0");
 294     query.bindValue(0, now);
 295     bool success = query.exec();
 296     if (!success) qWarning() << query.lastQuery() << query.lastError().text();
 297     unwatchedCount = 0;
 298
 299     foreach (YTChannel *channel, YTChannel::getCachedChannels()) {
 300         channel->setWatched(now);
 301         channel->setNotifyCount(0);
 302     }
 303
 304     emit unwatchedCountChanged(0);
 305 }
 306
 307 void ChannelAggregator::videoWatched(Video *video) {
 308     if (!Database::exists()) return;
 309     QSqlDatabase db = Database::instance().getConnection();
 310     QSqlQuery query(db);
 311     query.prepare("update subscriptions_videos set watched=? where video_id=?");
 312     query.bindValue(0, QDateTime::currentDateTimeUtc().toTime_t());
 313     query.bindValue(1, video->id());
 314     bool success = query.exec();
 315     if (!success) qWarning() << query.lastQuery() << query.lastError().text();
 316     if (query.numRowsAffected() > 0) {
 317         YTChannel *channel = YTChannel::forId(video->channelId());
 318         channel->updateNotifyCount();
 319     }
 320 }
 321
 322 void ChannelAggregator::cleanup() {
 323     const int maxVideos = 1000;
 324     const int maxDeletions = 1000;
 325     if (!Database::exists()) return;
 326     QSqlDatabase db = Database::instance().getConnection();
 327
 328     QSqlQuery query(db);
 329     bool success = query.exec("select count(*) from subscriptions_videos");
 330     if (!success) qWarning() << query.lastQuery() << query.lastError().text();
 331     if (!query.next()) return;
 332     int count = query.value(0).toInt();
 333     if (count <= maxVideos) return;
 334
 335     query = QSqlQuery(db);
 336     query.prepare("delete from subscriptions_videos where id in "
 337                   "(select id from subscriptions_videos "
 338                   "order by published desc limit ?,?)");
 339     query.bindValue(0, maxVideos);
 340     query.bindValue(1, maxDeletions);
 341     success = query.exec();
 342     if (!success) qWarning() << query.lastQuery() << query.lastError().text();
 343 }