Add scrobbler with support for Last.fm, Libre.fm and ListenBrainz

2018-12-23 18:54:27 +01:00
parent 517285085a
commit 0d7e12e781
43 changed files with 3565 additions and 169 deletions
--- a/src/scrobbler/scrobblingapi20.cpp
+++ b/src/scrobbler/scrobblingapi20.cpp
@@ -0,0 +1,740 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2018, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry 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.
+ *
+ * Strawberry 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 Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "config.h"
+
+#include <algorithm>
+
+#include <QtGlobal>
+#include <QDesktopServices>
+#include <QVariant>
+#include <QByteArray>
+#include <QString>
+#include <QUrl>
+#include <QUrlQuery>
+#include <QDateTime>
+#include <QCryptographicHash>
+#include <QMenu>
+#include <QMessageBox>
+#include <QSettings>
+#include <QNetworkRequest>
+#include <QNetworkReply>
+#include <QJsonParseError>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QJsonArray>
+#include <QJsonValue>
+
+#include "core/application.h"
+#include "core/player.h"
+#include "core/closure.h"
+#include "core/network.h"
+#include "core/song.h"
+#include "core/timeconstants.h"
+#include "core/logging.h"
+#include "internet/localredirectserver.h"
+#include "settings/settingsdialog.h"
+#include "settings/scrobblersettingspage.h"
+
+#include "audioscrobbler.h"
+#include "scrobblerservices.h"
+#include "scrobblingapi20.h"
+#include "scrobblercache.h"
+#include "scrobblercacheitem.h"
+
+const char *ScrobblingAPI20::kApiKey = "211990b4c96782c05d1536e7219eb56e";
+const char *ScrobblingAPI20::kSecret = "80fd738f49596e9709b1bf9319c444a8";
+const char *ScrobblingAPI20::kRedirectUrl = "https://oauth.strawbs.net";
+const int ScrobblingAPI20::kScrobblesPerRequest = 50;
+
+ScrobblingAPI20::ScrobblingAPI20(const QString &name, const QString &settings_group, const QString &auth_url, const QString &api_url, const bool batch, Application *app, QObject *parent) :
+  ScrobblerService(name, app, parent),
+  name_(name),
+  settings_group_(settings_group),
+  auth_url_(auth_url),
+  api_url_(api_url),
+  batch_(batch),
+  app_(app),
+  enabled_(false),
+  subscriber_(false),
+  submitted_(false) {}
+
+ScrobblingAPI20::~ScrobblingAPI20() {}
+
+void ScrobblingAPI20::ReloadSettings() {
+
+  QSettings s;
+  s.beginGroup(settings_group_);
+  enabled_ = s.value("enabled", false).toBool();
+  s.endGroup();
+
+}
+
+void ScrobblingAPI20::LoadSession() {
+
+  QSettings s;
+  s.beginGroup(settings_group_);
+  subscriber_ = s.value("subscriber", false).toBool();
+  username_ = s.value("username").toString();
+  session_key_ = s.value("session_key").toString();
+  s.endGroup();
+
+}
+
+void ScrobblingAPI20::Logout() {
+
+  subscriber_ = false;
+  username_.clear();
+  session_key_.clear();
+
+  QSettings settings;
+  settings.beginGroup(settings_group_);
+  settings.remove("subscriber");
+  settings.remove("username");
+  settings.remove("session_key");
+  settings.endGroup();
+
+}
+
+void ScrobblingAPI20::Authenticate() {
+
+  QUrl url(auth_url_);
+
+  LocalRedirectServer *server = new LocalRedirectServer(this);
+  server->Listen();
+  NewClosure(server, SIGNAL(Finished()), this, &ScrobblingAPI20::RedirectArrived, server);
+
+  QUrl redirect_url(kRedirectUrl);
+  QUrlQuery redirect_url_query;
+  const QString port = QString::number(server->url().port());
+  redirect_url_query.addQueryItem("port", port);  
+  redirect_url.setQuery(redirect_url_query);
+
+  QUrlQuery url_query;
+  url_query.addQueryItem("api_key", kApiKey);
+  url_query.addQueryItem("cb", redirect_url.toString());
+  url.setQuery(url_query);
+
+  bool result = QDesktopServices::openUrl(url);
+  if (!result) {
+    QMessageBox box(QMessageBox::NoIcon, "Scrobbler Authentication", QString("Please open this URL in your browser: <a href=\"%1\">%1</a>").arg(url.toString()), QMessageBox::Ok);
+    box.setTextFormat(Qt::RichText);
+    qLog(Debug) << "Scrobbler authentication URL: " << url.toString();
+    box.exec();
+  }
+
+}
+
+void ScrobblingAPI20::RedirectArrived(LocalRedirectServer *server) {
+
+  server->deleteLater();
+
+  QUrl url = server->request_url();
+  RequestSession(QUrlQuery(url).queryItemValue("token").toUtf8());
+
+}
+
+void ScrobblingAPI20::RequestSession(QString token) {
+
+  QUrl session_url(api_url_);
+  QUrlQuery session_url_query;
+  session_url_query.addQueryItem("api_key", kApiKey);
+  session_url_query.addQueryItem("method", "auth.getSession");
+  session_url_query.addQueryItem("token", token);
+  QString data_to_sign;
+  for (QPair<QString, QString> param : session_url_query.queryItems()) {
+    data_to_sign += param.first + param.second;
+  }
+  data_to_sign += kSecret;
+  QByteArray const digest = QCryptographicHash::hash(data_to_sign.toUtf8(), QCryptographicHash::Md5);
+  QString signature = QString::fromLatin1(digest.toHex()).rightJustified(32, '0').toLower();
+  session_url_query.addQueryItem("api_sig", signature);
+  session_url_query.addQueryItem(QUrl::toPercentEncoding("format"), QUrl::toPercentEncoding("json"));
+  session_url.setQuery(session_url_query);
+
+  QNetworkRequest req(session_url);
+  QNetworkReply *reply = network()->get(req);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(AuthenticateReplyFinished(QNetworkReply*)), reply);
+
+}
+
+void ScrobblingAPI20::AuthenticateReplyFinished(QNetworkReply *reply) {
+
+  reply->deleteLater();
+
+  QByteArray data;
+
+  if (reply->error() == QNetworkReply::NoError && reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 200) {
+    data = reply->readAll();
+  }
+  else {
+    if (reply->error() < 200) {
+      // This is a network error, there is nothing more to do.
+      QString failure_reason = QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
+      AuthError(failure_reason);
+    }
+    else {
+      // See if there is Json data containing "error" and "message" - then use that instead.
+      data = reply->readAll();
+      QJsonParseError error;
+      QJsonDocument json_doc = QJsonDocument::fromJson(data, &error);
+      QString failure_reason;
+      if (error.error == QJsonParseError::NoError && !json_doc.isNull() && !json_doc.isEmpty() && json_doc.isObject()) {
+        QJsonObject json_obj = json_doc.object();
+        if (json_obj.contains("error") && json_obj.contains("message")) {
+          int error = json_obj["error"].toInt();
+          QString message = json_obj["message"].toString();
+          failure_reason = "Error: " + QString::number(error) + ": " + message;
+        }
+        else {
+          failure_reason = QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
+        }
+      }
+      else {
+        failure_reason = QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
+      }
+      AuthError(failure_reason);
+    }
+    return;
+  }
+  
+  QJsonObject json_obj = ExtractJsonObj(data);
+  if (json_obj.isEmpty()) {
+    AuthError("Json document from server was empty.");
+    return;
+  }
+  
+  if (json_obj.contains("error") && json_obj.contains("message")) {
+    int error = json_obj["error"].toInt();
+    QString message = json_obj["message"].toString();
+    QString failure_reason = "Error: " + QString::number(error) + ": " + message;
+    AuthError(failure_reason);
+    return;
+  }
+
+  if (!json_obj.contains("session")) {
+    AuthError("Json reply from server is missing session.");
+    return;
+  }
+
+  QJsonValue json_session = json_obj["session"];
+  if (!json_session.isObject()) {
+    AuthError("Json session is not an object.");
+    return;
+  }
+  json_obj = json_session.toObject();
+  if (json_obj.isEmpty()) {
+    AuthError("Json session object is empty.");
+    return;
+  }
+  if (!json_obj.contains("subscriber") || !json_obj.contains("name") || !json_obj.contains("key")) {
+    AuthError("Json session object is missing values.");
+    return;
+  }
+
+  subscriber_ = json_obj["subscriber"].toBool();
+  username_ = json_obj["name"].toString();
+  session_key_ = json_obj["key"].toString();
+  
+  QSettings s;
+  s.beginGroup(settings_group_);
+  s.setValue("subscriber", subscriber_);
+  s.setValue("username", username_);
+  s.setValue("session_key", session_key_);
+  s.endGroup();
+
+  emit AuthenticationComplete(true);
+
+}
+
+QNetworkReply *ScrobblingAPI20::CreateRequest(const ParamList &request_params) {
+
+  ParamList params = ParamList()
+    << Param("api_key", kApiKey)
+    << Param("sk", session_key_)
+    << Param("lang", QLocale().name().left(2).toLower())
+    << request_params;
+
+  std::sort(params.begin(), params.end());
+
+  QUrlQuery url_query;
+  QString data_to_sign;
+  for (const Param &param : params) {
+    EncodedParam encoded_param(QUrl::toPercentEncoding(param.first), QUrl::toPercentEncoding(param.second));
+    url_query.addQueryItem(encoded_param.first, encoded_param.second);
+    data_to_sign += param.first + param.second;
+  }
+  data_to_sign += kSecret;
+
+  QByteArray const digest = QCryptographicHash::hash(data_to_sign.toUtf8(), QCryptographicHash::Md5);
+  QString signature = QString::fromLatin1(digest.toHex()).rightJustified(32, '0').toLower();
+
+  url_query.addQueryItem("api_sig", QUrl::toPercentEncoding(signature));
+  url_query.addQueryItem("format", QUrl::toPercentEncoding("json"));
+
+  QUrl url(api_url_);
+  QNetworkRequest req(url);
+  req.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
+  QByteArray query = url_query.toString(QUrl::FullyEncoded).toUtf8();
+  QNetworkReply *reply = network()->post(req, query);
+
+  //qLog(Debug) << name_ << "Sending request" << query;
+
+  return reply;
+
+}
+
+QByteArray ScrobblingAPI20::GetReplyData(QNetworkReply *reply) {
+
+  QByteArray data;
+
+  if (reply->error() == QNetworkReply::NoError && reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 200) {
+    data = reply->readAll();
+  }
+  else {
+    if (reply->error() < 200) {
+      // This is a network error, there is nothing more to do.
+      QString error_reason = QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
+      Error(error_reason);
+    }
+    else {
+      // See if there is Json data containing "error" and "message" - then use that instead.
+      data = reply->readAll();
+      QJsonParseError error;
+      QJsonDocument json_doc = QJsonDocument::fromJson(data, &error);
+      int error_code = -1;
+      QString error_reason;
+      if (error.error == QJsonParseError::NoError && !json_doc.isNull() && !json_doc.isEmpty() && json_doc.isObject()) {
+        QJsonObject json_obj = json_doc.object();
+        if (json_obj.contains("error") && json_obj.contains("message")) {
+          error_code = json_obj["error"].toInt();
+          QString message = json_obj["message"].toString();
+          error_reason = QString("%1 (%2)").arg(message).arg(error_code);
+        }
+        else {
+          error_reason = QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
+        }
+      }
+      else {
+        error_reason = QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
+      }
+      if (reply->error() == QNetworkReply::ContentAccessDenied ||
+          reply->error() == QNetworkReply::ContentOperationNotPermittedError ||
+          reply->error() == QNetworkReply::AuthenticationRequiredError ||
+          error_code == ScrobbleErrorCode::InvalidSessionKey ||
+          error_code == ScrobbleErrorCode::AuthenticationFailed
+        ){
+        // Session is probably expired
+        Logout();
+        Error(error_reason);
+      }
+      else if (reply->error() == QNetworkReply::ContentNotFoundError) { // Ignore this error
+        Error(error_reason);
+      }
+      else { // Fail
+        Error(error_reason);
+      }
+    }
+    return QByteArray();
+  }
+
+  return data;
+  
+}
+
+void ScrobblingAPI20::UpdateNowPlaying(const Song &song) {
+
+  song_playing_ = song;
+  timestamp_ = QDateTime::currentDateTime().toTime_t();
+
+  if (!IsAuthenticated() || !song.is_metadata_good()) return;
+
+  ParamList params = ParamList()
+    << Param("method", "track.updateNowPlaying")
+    << Param("artist", song.artist())
+    << Param("track", song.title())
+    << Param("album", song.album());
+
+  QNetworkReply *reply = CreateRequest(params);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(UpdateNowPlayingRequestFinished(QNetworkReply*)), reply);
+
+}
+
+void ScrobblingAPI20::UpdateNowPlayingRequestFinished(QNetworkReply *reply) {
+
+  reply->deleteLater();
+
+  QByteArray data = GetReplyData(reply);
+  if (data.isEmpty()) {
+    return;
+  }
+
+  // TODO
+
+}
+
+void ScrobblingAPI20::Scrobble(const Song &song) {
+
+  if (song.id() != song_playing_.id() || song.url() != song_playing_.url() || !song.is_metadata_good()) return;
+
+  cache()->Add(song, timestamp_);
+
+  if (app_->scrobbler()->IsOffline()) return;
+  
+  if (!IsAuthenticated()) {
+    emit ErrorMessage(QString("Scrobbler %1 is not authenticated!").arg(name_));
+    return;
+  }
+
+  if (!submitted_) {
+    DoInAMinuteOrSo(this, SLOT(Submit()));
+    submitted_ = true;
+  }
+
+}
+
+void ScrobblingAPI20::Submit() {
+
+  qLog(Debug) << __PRETTY_FUNCTION__ << name_;
+
+  submitted_ = false;
+
+  if (!IsEnabled() || !IsAuthenticated() || app_->scrobbler()->IsOffline()) return;
+
+  ParamList params = ParamList()
+    << Param("method", "track.scrobble");
+
+  int i(0);
+  QList<quint64> list;
+  for (ScrobblerCacheItem *item : cache()->List()) {
+    if (item->sent_) continue;
+    item->sent_ = true;
+    if (!batch_) { SendSingleScrobble(item); continue; }
+    i++;
+    list << item->timestamp_;
+    params << Param(QString("%1[%2]").arg("artist").arg(i), item->artist_);
+    params << Param(QString("%1[%2]").arg("album").arg(i), item->album_);
+    params << Param(QString("%1[%2]").arg("track").arg(i), item->song_);
+    params << Param(QString("%1[%2]").arg("timestamp").arg(i), QString::number(item->timestamp_));
+    params << Param(QString("%1[%2]").arg("duration").arg(i), QString::number(item->duration_ / kNsecPerSec));
+    if (!item->albumartist_.isEmpty()) params << Param(QString("%1[%2]").arg("albumArtist").arg(i), item->albumartist_);
+    if (item->track_ > 0) params << Param(QString("%1[%2]").arg(i).arg("trackNumber"), QString::number(item->track_));
+    if (i >= kScrobblesPerRequest) break;
+  }
+
+  if (!batch_ || i <= 0) return;
+
+  QNetworkReply *reply = CreateRequest(params);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(ScrobbleRequestFinished(QNetworkReply*, QList<quint64>)), reply, list);
+
+}
+
+void ScrobblingAPI20::ScrobbleRequestFinished(QNetworkReply *reply, QList<quint64> list) {
+
+  reply->deleteLater();
+
+  QByteArray data = GetReplyData(reply);
+  if (data.isEmpty()) {
+    cache()->ClearSent(list);
+    return;
+  }
+
+  QJsonObject json_obj = ExtractJsonObj(data);
+  if (json_obj.isEmpty()) {
+    cache()->ClearSent(list);
+    return;
+  }
+
+  if (!json_obj.contains("scrobbles")) {
+    if (json_obj.contains("error")) {
+      int error = json_obj["error"].toInt();
+      Error(QString("Error: %1: %2").arg(QString::number(error)).arg(error));
+    }
+    Error("Json reply from server is missing session.");
+    cache()->ClearSent(list);
+    return;
+  }
+
+  cache()->Flush(list);
+
+  QJsonValue json_scrobbles = json_obj["scrobbles"];
+  if (!json_scrobbles.isObject()) {
+    Error("Json scrobbles is not an object.", json_obj);
+    return;
+  }
+  json_obj = json_scrobbles.toObject();
+  if (json_obj.isEmpty()) {
+    Error("Json scrobbles object is empty.", json_scrobbles);
+    return;
+  }
+  if (!json_obj.contains("@attr") || !json_obj.contains("scrobble")) {
+    Error("Json scrobbles object is missing values.", json_obj);
+    return;
+  }
+
+  QJsonValue json_attr = json_obj["@attr"];
+  if (!json_attr.isObject()) {
+    Error("Json scrobbles attr is not an object.", json_attr);
+    return;
+  }
+  QJsonObject json_obj_attr = json_attr.toObject();
+  if (json_obj_attr.isEmpty()) {
+    Error("Json scrobbles attr is empty.", json_attr);
+    return;
+  }
+  if (!json_obj_attr.contains("accepted") || !json_obj_attr.contains("ignored")) {
+    Error("Json scrobbles attr is missing values.", json_obj_attr);
+    return;
+  }
+  int accepted = json_obj_attr["accepted"].toInt();
+  int ignored = json_obj_attr["ignored"].toInt();
+  qLog(Debug) << name_ << "Scrobbles accepted:" << accepted << "ignored:" << ignored;
+
+  QJsonValue json_scrobble = json_obj["scrobble"];
+  if (!json_scrobble.isArray()) {
+    Error("Json scrobbles scrobble is not array.", json_scrobble);
+    return;
+  }
+  QJsonArray json_array_scrobble = json_scrobble.toArray();
+  if (json_array_scrobble.isEmpty()) {
+    Error("Json scrobbles scrobble array is empty.", json_scrobble);
+    return;
+  }
+  
+  for (const QJsonValue &value : json_array_scrobble) {
+
+    if (!value.isObject()) {
+      Error("Json scrobbles scrobble array value is not an object.", value);
+      continue;
+    }
+    QJsonObject json_track = value.toObject();
+    if (json_track.isEmpty()) {
+      continue;
+    }
+
+    if (!json_track.contains("artist") ||
+        !json_track.contains("album") ||
+        !json_track.contains("albumArtist") ||
+        !json_track.contains("track") ||
+        !json_track.contains("timestamp") ||
+        !json_track.contains("ignoredMessage")
+    ) {
+      Error("Json scrobbles scrobble is missing values.", json_track);
+      return;
+    }
+
+    QJsonValue json_value_artist = json_track["artist"];
+    QJsonValue json_value_album = json_track["album"];
+    QJsonValue json_value_song = json_track["track"];
+    //quint64 timestamp = json_track["timestamp"].toVariant().toULongLong();
+
+    if (!json_value_artist.isObject() || !json_value_album.isObject() || !json_value_song.isObject()) {
+      Error("Json scrobbles scrobble values are not objects.", json_track);
+      continue;
+    }
+
+    QJsonObject json_obj_artist = json_value_artist.toObject();
+    QJsonObject json_obj_album = json_value_album.toObject();
+    QJsonObject json_obj_song = json_value_song.toObject();
+
+    if (json_obj_artist.isEmpty() || json_obj_album.isEmpty() || json_obj_song.isEmpty()) {
+      Error("Json scrobbles scrobble values objects are empty.", json_track);
+      continue;
+    }
+
+    if (!json_obj_artist.contains("#text") || !json_obj_album.contains("#text") || !json_obj_song.contains("#text")) {
+      Error("Json scrobbles scrobble values objects are empty.", json_track);
+      continue;
+    }
+
+    // TODO
+
+ }
+
+}
+
+void ScrobblingAPI20::SendSingleScrobble(ScrobblerCacheItem *item) {
+
+  ParamList params = ParamList()
+    << Param("method", "track.scrobble")
+    << Param("artist", item->artist_)
+    << Param("album", item->album_)
+    << Param("track", item->song_)
+    << Param("timestamp", QString::number(item->timestamp_))
+    << Param("duration", QString::number(item->duration_ / kNsecPerSec));
+
+  if (!item->albumartist_.isEmpty()) params << Param("albumArtist", item->albumartist_);
+  if (item->track_ > 0) params << Param("trackNumber", QString::number(item->track_));
+
+  QNetworkReply *reply = CreateRequest(params);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(SingleScrobbleRequestFinished(QNetworkReply*, quint64)), reply, item->timestamp_);
+
+}
+
+void ScrobblingAPI20::SingleScrobbleRequestFinished(QNetworkReply *reply, quint64 timestamp) {
+
+  reply->deleteLater();
+
+  ScrobblerCacheItem *item = cache()->Get(timestamp);
+  if (!item) {
+    Error(QString("Received reply for non-existing cache entry %1.").arg(timestamp));
+    return;
+  }
+
+  QByteArray data = GetReplyData(reply);
+  if (data.isEmpty()) {
+    return;
+  }
+
+  QJsonObject json_obj = ExtractJsonObj(data);
+  if (json_obj.isEmpty()) {
+    return;
+  }
+
+  if (!json_obj.contains("scrobbles")) {
+    if (json_obj.contains("error")) {
+      int error = json_obj["error"].toInt();
+      Error(QString("Error: %1: %2").arg(QString::number(error)).arg(error));
+    }
+    Error("Json reply from server is missing session.");
+    return;
+  }
+
+  QJsonValue json_scrobbles = json_obj["scrobbles"];
+  if (!json_scrobbles.isObject()) {
+    Error("Json scrobbles is not an object.", json_obj);
+    return;
+  }
+  json_obj = json_scrobbles.toObject();
+  if (json_obj.isEmpty()) {
+    Error("Json scrobbles object is empty.", json_scrobbles);
+    return;
+  }
+  if (!json_obj.contains("@attr") || !json_obj.contains("scrobble")) {
+    Error("Json scrobbles object is missing values.", json_obj);
+    return;
+  }
+
+  QJsonValue json_attr = json_obj["@attr"];
+  if (!json_attr.isObject()) {
+    Error("Json scrobbles attr is not an object.", json_attr);
+    return;
+  }
+  QJsonObject json_obj_attr = json_attr.toObject();
+  if (json_obj_attr.isEmpty()) {
+    Error("Json scrobbles attr is empty.", json_attr);
+    return;
+  }
+
+  QJsonValue json_scrobble = json_obj["scrobble"];
+  if (!json_scrobble.isObject()) {
+    Error("Json scrobbles scrobble is not an object.", json_scrobble);
+    return;
+  }
+  QJsonObject json_obj_scrobble = json_scrobble.toObject();
+  if (json_obj_scrobble.isEmpty()) {
+    Error("Json scrobbles scrobble is empty.", json_scrobble);
+    return;
+  }
+
+  if (!json_obj_attr.contains("accepted") || !json_obj_attr.contains("ignored")) {
+    Error("Json scrobbles attr is missing values.", json_obj_attr);
+    return;
+  }
+
+  if (!json_obj_scrobble.contains("artist") || !json_obj_scrobble.contains("album") || !json_obj_scrobble.contains("albumArtist") || !json_obj_scrobble.contains("track") || !json_obj_scrobble.contains("timestamp")) {
+    Error("Json scrobbles scrobble is missing values.", json_obj_scrobble);
+    return;
+  }
+
+  int accepted = json_obj_attr["accepted"].toVariant().toInt();
+  if (accepted == 1) {
+    qLog(Debug) << name_ << "Scrobble for" << item->song_ << "accepted";
+  }
+  else {
+    Error(QString("Scrobble for \"%1\" not accepted").arg(item->song_));
+    qLog(Debug) << name_ << json_obj_attr["accepted"];
+  }
+
+  cache()->Remove(timestamp);
+
+}
+
+void ScrobblingAPI20::Love(const Song &song) {
+
+  if (!IsAuthenticated()) app_->scrobbler()->ShowConfig();
+
+  ParamList params = ParamList()
+    << Param("method", "track.love")
+    << Param("artist", song.artist())
+    << Param("track", song.title())
+    << Param("album", song.album());
+
+  QNetworkReply *reply = CreateRequest(params);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(RequestFinished(QNetworkReply*)), reply);
+
+}
+
+void ScrobblingAPI20::AuthError(QString error) {
+  emit AuthenticationComplete(false, error);
+}
+
+void ScrobblingAPI20::Error(QString error, QVariant debug) {
+
+  qLog(Error) << name_ << error;
+  if (debug.isValid()) qLog(Debug) << debug;
+
+}
+
+QString ScrobblingAPI20::ErrorString(ScrobbleErrorCode error) const {
+
+  switch (error) {
+    case ScrobbleErrorCode::InvalidService:
+      return QString("Invalid service - This service does not exist");
+    case ScrobbleErrorCode::InvalidMethod:
+      return QString("Invalid Method - No method with that name in this package");
+    case ScrobbleErrorCode::AuthenticationFailed:
+      return QString("Authentication Failed - You do not have permissions to access the service");
+    case ScrobbleErrorCode::InvalidFormat:
+      return QString("Invalid format - This service doesn't exist in that format");
+    case ScrobbleErrorCode::InvalidParameters:
+      return QString("Invalid parameters - Your request is missing a required parameter");
+    case ScrobbleErrorCode::InvalidResourceSpecified:
+      return QString("Invalid resource specified");
+    case ScrobbleErrorCode::OperationFailed:
+      return QString("Operation failed - Something else went wrong");
+    case ScrobbleErrorCode::InvalidSessionKey:
+      return QString("Invalid session key - Please re-authenticate");
+    case ScrobbleErrorCode::InvalidApiKey:
+      return QString("Invalid API key - You must be granted a valid key by last.fm");
+    case ScrobbleErrorCode::ServiceOffline:
+      return QString("Service Offline - This service is temporarily offline. Try again later.");
+    case ScrobbleErrorCode::InvalidMethodSignature:
+        return QString("Invalid method signature supplied");
+    case ScrobbleErrorCode::TempError:
+      return QString("There was a temporary error processing your request. Please try again");
+    case ScrobbleErrorCode::SuspendedAPIKey:
+      return QString("Suspended API key - Access for your account has been suspended, please contact Last.fm");
+    case ScrobbleErrorCode::RateLimitExceeded:
+      return QString("Rate limit exceeded - Your IP has made too many requests in a short period");
+    default:
+      return QString("Unknown error");
+  }
+
+}