Added last.fm scrobbling.

1 files changed, 142 insertions, 0 deletions

diff --git a/liblastfm/Audioscrobbler.cpp b/liblastfm/Audioscrobbler.cpp
new file mode 100755
index 0000000..c00ee8b
--- /dev/null
+++ b/liblastfm/Audioscrobbler.cpp
@@ -0,0 +1,142 @@
+/*
+   Copyright 2009 Last.fm Ltd.
+      - Primarily authored by Max Howell, Jono Cole and Doug Mansell
+
+   This file is part of liblastfm.
+
+   liblastfm 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.
+
+   liblastfm 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 liblastfm.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "Audioscrobbler.h"
+#include "NowPlaying.h"
+#include "ScrobbleCache.h"
+#include "ScrobblerSubmission.h"
+#include "ws.h"
+
+
+namespace lastfm
+{
+    struct AudioscrobblerPrivate
+    {
+        AudioscrobblerPrivate()
+            : cache( ws::Username )
+        {}
+
+        ~AudioscrobblerPrivate()
+        {
+            delete np;
+            delete submitter;
+        }
+
+        QPointer<NowPlaying> np;
+        QPointer<ScrobblerSubmission> submitter;
+        ScrobbleCache cache;
+    };
+}
+
+
+lastfm::Audioscrobbler::Audioscrobbler()
+        : d( new AudioscrobblerPrivate() )
+{
+    d->np = new NowPlaying();
+    connect(d->np, SIGNAL(done(QByteArray)), SLOT(onNowPlayingReturn(QByteArray)), Qt::QueuedConnection);
+    d->submitter = new ScrobblerSubmission;
+    connect(d->submitter, SIGNAL(done(QByteArray)), SLOT(onSubmissionReturn(QByteArray)), Qt::QueuedConnection);
+}
+
+
+lastfm::Audioscrobbler::~Audioscrobbler()
+{
+    delete d;
+}
+
+
+void
+lastfm::Audioscrobbler::nowPlaying( const Track& track )
+{
+    d->np->submit( track );
+}
+
+
+void
+lastfm::Audioscrobbler::cache( const Track& track )
+{
+    d->cache.add( track );
+}
+
+
+void
+lastfm::Audioscrobbler::cache( const QList<Track>& tracks )
+{
+    d->cache.add( tracks );
+}
+
+
+void
+lastfm::Audioscrobbler::submit()
+{
+    d->submitter->setTracks( d->cache.tracks() );
+    d->submitter->submitNextBatch();
+
+    if (d->submitter->isActive())
+        emit status( Scrobbling );
+}
+
+void
+lastfm::Audioscrobbler::onNowPlayingReturn( const QByteArray& result )
+{
+    if (result.isEmpty())
+        return;
+
+    lastfm::XmlQuery xml(result);
+    QString status = xml.attribute("status");
+
+    if (status == "ok")
+    {
+        d->np->reset();
+    }
+    else
+    {
+        int errorCode = xml["error"].attribute("code").toInt();
+        if (errorCode == lastfm::ws::TryAgainLater || errorCode == lastfm::ws::RateLimitExceeded)
+            d->np->retry();
+    }
+}
+
+
+void
+lastfm::Audioscrobbler::onSubmissionReturn( const QByteArray& result )
+{
+    if (result.isEmpty())
+        return;
+
+    lastfm::XmlQuery xml(result);
+    QString statusCode = xml.attribute("status");
+
+    if (statusCode == "ok")
+    {
+        d->cache.remove(d->submitter->batch());
+        d->submitter->submitNextBatch();
+
+        if (d->submitter->batch().isEmpty())
+        {
+            emit status(Audioscrobbler::TracksScrobbled);
+        }
+    }
+    else
+    {
+        int errorCode = xml["error"].attribute("code").toInt();
+        if (errorCode == lastfm::ws::TryAgainLater || errorCode == lastfm::ws::RateLimitExceeded)
+            d->submitter->retry();
+    }
+}