Add internet tabs view and tidal favorites (#167)

src/tidal/tidalrequest.cpp

@@ -0,0 +1,821 @@
+/*
+ * 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 <QObject>
+#include <QByteArray>
+#include <QDir>
+#include <QString>
+#include <QUrl>
+#include <QImage>
+#include <QNetworkReply>
+#include <QJsonObject>
+#include <QJsonArray>
+#include <QJsonValue>
+
+#include "core/closure.h"
+#include "core/logging.h"
+#include "core/network.h"
+#include "core/song.h"
+#include "core/timeconstants.h"
+#include "tidalservice.h"
+#include "tidalurlhandler.h"
+#include "tidalrequest.h"
+
+const char *TidalRequest::kResourcesUrl = "http://resources.tidal.com";
+
+TidalRequest::TidalRequest(TidalService *service, TidalUrlHandler *url_handler, NetworkAccessManager *network, QueryType type, QObject *parent)
+    : TidalBaseRequest(service, network, parent),
+      service_(service),
+      url_handler_(url_handler),
+      network_(network),
+      type_(type),
+      artist_query_(false),
+      artist_albums_requested_(0),
+      artist_albums_received_(0),
+      album_songs_requested_(0),
+      album_songs_received_(0),
+      album_covers_requested_(0),
+      album_covers_received_(0),
+      need_login_(false),
+      no_match_(false)
+  {
+
+}
+
+TidalRequest::~TidalRequest() {
+
+  while (!replies_.isEmpty()) {
+    QNetworkReply *reply = replies_.takeFirst();
+    disconnect(reply, 0, nullptr, 0);
+    reply->abort();
+    reply->deleteLater();
+  }
+
+}
+
+void TidalRequest::LoginComplete(bool success, QString error) {
+
+  if (!need_login_) return;
+  need_login_ = false;
+
+  if (!success) {
+    Error(error);
+    return;
+  }
+
+  Process();
+
+}
+
+void TidalRequest::Process() {
+
+  if (!service_->authenticated()) {
+    need_login_ = true;
+    service_->TryLogin();
+    return;
+  }
+
+  switch (type_) {
+    case QueryType::QueryType_Artists:
+      GetArtists();
+      break;
+    case QueryType::QueryType_Albums:
+      GetAlbums();
+      break;
+    case QueryType::QueryType_Songs:
+      GetSongs();
+      break;
+    case QueryType::QueryType_SearchArtists:
+      SendArtistsSearch();
+      break;
+    case QueryType::QueryType_SearchAlbums:
+      SendAlbumsSearch();
+      break;
+    case QueryType::QueryType_SearchSongs:
+      SendSongsSearch();
+      break;
+    default:
+      Error("Invalid query type.");
+      break;
+  }
+
+}
+
+void TidalRequest::Search(const int search_id, const QString &search_text) {
+  search_id_ = search_id;
+  search_text_ = search_text;
+}
+
+void TidalRequest::GetArtists() {
+
+  emit UpdateStatus(tr("Retrieving artists..."));
+
+  artist_query_ = true;
+
+  ParamList parameters;
+  QNetworkReply *reply = CreateRequest(QString("users/%1/favorites/artists").arg(service_->user_id()), parameters);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(ArtistsReceived(QNetworkReply*)), reply);
+
+}
+
+void TidalRequest::GetAlbums() {
+
+  emit UpdateStatus(tr("Retrieving albums..."));
+
+  type_ = QueryType_Albums;
+
+  if (!service_->authenticated()) {
+    need_login_ = true;
+    return;
+  }
+
+  ParamList parameters;
+  QNetworkReply *reply = CreateRequest(QString("users/%1/favorites/albums").arg(service_->user_id()), parameters);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(AlbumsReceived(QNetworkReply*, int, int)), reply, 0, 0);
+
+}
+
+void TidalRequest::GetSongs() {
+
+  emit UpdateStatus(tr("Retrieving songs..."));
+
+  type_ = QueryType_Songs;
+
+  if (!service_->authenticated()) {
+    need_login_ = true;
+    return;
+  }
+
+  ParamList parameters;
+  QNetworkReply *reply = CreateRequest(QString("users/%1/favorites/tracks").arg(service_->user_id()), parameters);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(SongsReceived(QNetworkReply*, int)), reply, 0);
+
+}
+
+void TidalRequest::SendArtistsSearch() {
+
+  if (!service_->authenticated()) {
+    need_login_ = true;
+    return;
+  }
+
+  artist_query_ = true;
+
+  ParamList parameters;
+  parameters << Param("query", search_text_);
+  parameters << Param("limit", QString::number(service_->artistssearchlimit()));
+  QNetworkReply *reply = CreateRequest("search/artists", parameters);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(ArtistsReceived(QNetworkReply*)), reply);
+
+}
+
+void TidalRequest::SendAlbumsSearch() {
+
+  if (!service_->authenticated()) {
+    need_login_ = true;
+    return;
+  }
+
+  ParamList parameters;
+  parameters << Param("query", search_text_);
+  parameters << Param("limit", QString::number(service_->albumssearchlimit()));
+  QNetworkReply *reply = CreateRequest("search/albums", parameters);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(AlbumsReceived(QNetworkReply*, int, int)), reply, 0, 0);
+
+}
+
+void TidalRequest::SendSongsSearch() {
+
+  if (!service_->authenticated()) {
+    need_login_ = true;
+    return;
+  }
+
+  ParamList parameters;
+  parameters << Param("query", search_text_);
+  parameters << Param("limit", QString::number(service_->songssearchlimit()));
+  QNetworkReply *reply = CreateRequest("search/tracks", parameters);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(AlbumsReceived(QNetworkReply*, int, int)), reply, 0, 0);
+
+}
+
+void TidalRequest::ArtistsReceived(QNetworkReply *reply) {
+
+  QString error;
+  QByteArray data = GetReplyData(reply, error, true);
+  if (data.isEmpty()) {
+    artist_query_ = false;
+    CheckFinish();
+    return;
+  }
+
+  QJsonValue json_value = ExtractItems(data, error);
+  if (!json_value.isArray()) {
+    artist_query_ = false;
+    CheckFinish();
+    return;
+  }
+  QJsonArray json_items = json_value.toArray();
+  if (json_items.isEmpty()) {  // Empty array means no match
+    artist_query_ = false;
+    no_match_ = true;
+    CheckFinish();
+    return;
+  }
+
+  for (const QJsonValue &value : json_items) {
+    if (!value.isObject()) {
+      qLog(Error) << "Tidal: Invalid Json reply, item not a object.";
+      qLog(Debug) << value;
+      continue;
+    }
+    QJsonObject json_obj = value.toObject();
+
+    if (json_obj.contains("item")) {
+      QJsonValue json_item = json_obj["item"];
+      if (!json_item.isObject()) {
+        qLog(Error) << "Tidal: Invalid Json reply, item not a object.";
+        qLog(Debug) << json_item;
+        continue;
+      }
+      json_obj = json_item.toObject();
+    }
+
+    if (!json_obj.contains("id") || !json_obj.contains("name")) {
+      qLog(Error) << "Tidal: Invalid Json reply, item missing id or album.";
+      qLog(Debug) << json_obj;
+      continue;
+    }
+
+    int artist_id = json_obj["id"].toInt();
+    if (requests_artist_albums_.contains(artist_id)) continue;
+    requests_artist_albums_.append(artist_id);
+    GetArtistAlbums(artist_id);
+    artist_albums_requested_++;
+    if (artist_albums_requested_ >= service_->artistssearchlimit()) break;
+
+  }
+
+  if (artist_albums_requested_ > 0) {
+    if (artist_albums_requested_ == 1) emit UpdateStatus(tr("Retrieving albums for %1 artist...").arg(artist_albums_requested_));
+    else emit UpdateStatus(tr("Retrieving albums for %1 artists...").arg(artist_albums_requested_));
+    emit ProgressSetMaximum(artist_albums_requested_);
+    emit UpdateProgress(0);
+  }
+  else {
+    artist_query_ = false;
+  }
+
+  CheckFinish();
+
+}
+
+void TidalRequest::GetArtistAlbums(const int artist_id, const int offset) {
+
+  ParamList parameters;
+  if (offset > 0) parameters << Param("offset", QString::number(offset));
+  QNetworkReply *reply = CreateRequest(QString("artists/%1/albums").arg(artist_id), parameters);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(AlbumsReceived(QNetworkReply*, int, int)), reply, artist_id, offset);
+
+}
+
+void TidalRequest::AlbumsReceived(QNetworkReply *reply, const int artist_id, const int offset_requested) {
+
+  QString error;
+  QByteArray data = GetReplyData(reply, error, (artist_id == 0));
+
+  if (artist_query_) {
+    if (!requests_artist_albums_.contains(artist_id)) return;
+    artist_albums_received_++;
+    emit UpdateProgress(artist_albums_received_);
+  }
+
+  if (data.isEmpty()) {
+    AlbumsFinished(artist_id, offset_requested);
+    return;
+  }
+
+  QJsonObject json_obj = ExtractJsonObj(data, error);
+  if (json_obj.isEmpty()) {
+    AlbumsFinished(artist_id, offset_requested);
+    return;
+  }
+
+  int limit = 0;
+  int total_albums = 0;
+  if (artist_query_) {  // This was a list of albums by artist
+    if (!json_obj.contains("limit") ||
+        !json_obj.contains("offset") ||
+        !json_obj.contains("totalNumberOfItems") ||
+        !json_obj.contains("items")) {
+      AlbumsFinished(artist_id, offset_requested);
+      Error("Json object missing values.", json_obj);
+      return;
+    }
+    limit = json_obj["limit"].toInt();
+    int offset = json_obj["offset"].toInt();
+    total_albums = json_obj["totalNumberOfItems"].toInt();
+    if (offset != offset_requested) {
+      AlbumsFinished(artist_id, offset_requested, total_albums, limit);
+      Error(QString("Offset returned does not match offset requested! %1 != %2").arg(offset).arg(offset_requested));
+      return;
+    }
+  }
+
+  QJsonValue json_value = ExtractItems(json_obj, error);
+  if (!json_value.isArray()) {
+    AlbumsFinished(artist_id, offset_requested, total_albums, limit);
+    return;
+  }
+  QJsonArray json_items = json_value.toArray();
+  if (json_items.isEmpty()) {
+    if (!artist_query_) no_match_ = true;
+    AlbumsFinished(artist_id, offset_requested, total_albums, limit);
+    return;
+  }
+
+  int albums = 0;
+  for (const QJsonValue &value : json_items) {
+    ++albums;
+    if (!value.isObject()) {
+      qLog(Error) << "Tidal: Invalid Json reply, item not a object.";
+      qLog(Debug) << value;
+      continue;
+    }
+    QJsonObject json_obj = value.toObject();
+
+    if (json_obj.contains("item")) {
+      QJsonValue json_item = json_obj["item"];
+      if (!json_item.isObject()) {
+        qLog(Error) << "Tidal: Invalid Json reply, item not a object.";
+        qLog(Debug) << json_item;
+        continue;
+      }
+      json_obj = json_item.toObject();
+    }
+
+    int album_id = 0;
+    QString album;
+    if (json_obj.contains("type")) {  // This was a albums request or search
+      if (!json_obj.contains("id") || !json_obj.contains("title")) {
+        qLog(Error) << "Tidal: Invalid Json reply, item is missing ID or title.";
+        qLog(Debug) << json_obj;
+        continue;
+      }
+      album_id = json_obj["id"].toInt();
+      album = json_obj["title"].toString();
+    }
+    else if (json_obj.contains("album")) {  // This was a tracks request or search
+      if (!service_->fetchalbums()) {
+        Song song;
+        ParseSong(song, 0, value);
+        songs_ << song;
+        continue;
+      }
+      QJsonValue json_value_album = json_obj["album"];
+      if (!json_value_album.isObject()) {
+        qLog(Error) << "Tidal: Invalid Json reply, item album is not a object.";
+        qLog(Debug) << json_value_album;
+        continue;
+      }
+      QJsonObject json_album = json_value_album.toObject();
+      if (!json_album.contains("id") || !json_album.contains("title")) {
+        qLog(Error) << "Tidal: Invalid Json reply, item album is missing ID or title.";
+        qLog(Debug) << json_album;
+        continue;
+      }
+      album_id = json_album["id"].toInt();
+      album = json_album["title"].toString();
+
+    }
+    else {
+      qLog(Error) << "Tidal: Invalid Json reply, item missing type or album.";
+      qLog(Debug) << json_obj;
+      continue;
+    }
+
+    if (requests_album_songs_.contains(album_id)) continue;
+
+    if (!json_obj.contains("artist") || !json_obj.contains("title") || !json_obj.contains("audioQuality")) {
+      qLog(Error) << "Tidal: Invalid Json reply, item missing artist, title or audioQuality.";
+      qLog(Debug) << json_obj;
+      continue;
+    }
+    QJsonValue json_value_artist = json_obj["artist"];
+    if (!json_value_artist.isObject()) {
+      qLog(Error) << "Tidal: Invalid Json reply, item artist is not a object.";
+      qLog(Debug) << json_value_artist;
+      continue;
+    }
+    QJsonObject json_artist = json_value_artist.toObject();
+    if (!json_artist.contains("name")) {
+      qLog(Error) << "Tidal: Invalid Json reply, item artist missing name.";
+      qLog(Debug) << json_artist;
+      continue;
+    }
+    QString artist = json_artist["name"].toString();
+
+    QString quality = json_obj["audioQuality"].toString();
+    QString copyright = json_obj["copyright"].toString();
+
+    //qLog(Debug) << "Tidal:" << artist << album << quality << copyright;
+
+    requests_album_songs_.insert(album_id, artist);
+    album_songs_requested_++;
+    if (album_songs_requested_ >= service_->albumssearchlimit()) break;
+  }
+
+  AlbumsFinished(artist_id, offset_requested, total_albums, limit, albums);
+
+}
+
+void TidalRequest::AlbumsFinished(const int artist_id, const int offset_requested, const int total_albums, const int limit, const int albums) {
+
+  if (artist_query_) {  // This is a artist search.
+    if (albums > limit) {
+      Error("Albums returned does not match limit returned!");
+    }
+    int offset_next = offset_requested + albums;
+    if (album_songs_requested_ < service_->albumssearchlimit() && offset_next < total_albums) {
+      GetArtistAlbums(artist_id, offset_next);
+      artist_albums_requested_++;
+    }
+    else if (artist_albums_received_ >= artist_albums_requested_) {  // Artist search is finished.
+      artist_query_ = false;
+    }
+  }
+
+  if (!artist_query_) {
+    // Get songs for the albums.
+    QHashIterator<int, QString> i(requests_album_songs_);
+    while (i.hasNext()) {
+      i.next();
+      GetAlbumSongs(i.key());
+    }
+
+    if (album_songs_requested_ > 0) {
+      if (album_songs_requested_ == 1) emit UpdateStatus(tr("Retrieving songs for %1 album...").arg(album_songs_requested_));
+      else emit UpdateStatus(tr("Retrieving songs for %1 albums...").arg(album_songs_requested_));
+      emit ProgressSetMaximum(album_songs_requested_);
+      emit UpdateProgress(0);
+    }
+  }
+
+  CheckFinish();
+
+}
+
+void TidalRequest::GetAlbumSongs(const int album_id) {
+
+  ParamList parameters;
+  QNetworkReply *reply = CreateRequest(QString("albums/%1/tracks").arg(album_id), parameters);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(SongsReceived(QNetworkReply*, int)), reply, album_id);
+
+}
+
+void TidalRequest::SongsReceived(QNetworkReply *reply, const int album_id) {
+
+  QString error;
+  QByteArray data = GetReplyData(reply, error, false);
+
+  QString album_artist;
+  if (album_id != 0) {
+    if (!requests_album_songs_.contains(album_id)) return;
+    album_artist = requests_album_songs_[album_id];
+  }
+
+  album_songs_received_++;
+  if (!artist_query_) {
+    emit UpdateProgress(album_songs_received_);
+  }
+
+  if (data.isEmpty()) {
+    CheckFinish();
+    return;
+  }
+
+  QJsonValue json_value = ExtractItems(data, error);
+  if (!json_value.isArray()) {
+    CheckFinish();
+    return;
+  }
+
+  QJsonArray json_items = json_value.toArray();
+  if (json_items.isEmpty()) {
+    no_match_ = true;
+    CheckFinish();
+    return;
+  }
+
+  bool compilation = false;
+  bool multidisc = false;
+  SongList songs;
+  for (const QJsonValue &value : json_items) {
+    Song song;
+    ParseSong(song, album_id, value, album_artist);
+    if (!song.is_valid()) continue;
+    if (song.disc() >= 2) multidisc = true;
+    if (song.is_compilation()) compilation = true;
+    songs << song;
+  }
+
+  for (Song &song : songs) {
+    if (compilation) song.set_compilation_detected(true);
+    if (multidisc) {
+      QString album_full(QString("%1 - (Disc %2)").arg(song.album()).arg(song.disc()));
+      song.set_album(album_full);
+    }
+    songs_ << song;
+
+  }
+
+  if (service_->cache_album_covers() && artist_albums_requested_ <= artist_albums_received_ && album_songs_requested_ <= album_songs_received_) {
+    GetAlbumCovers();
+  }
+
+  CheckFinish();
+
+}
+
+int TidalRequest::ParseSong(Song &song, const int album_id_requested, const QJsonValue &value, QString album_artist) {
+
+  if (!value.isObject()) {
+    qLog(Error) << "Tidal: Invalid Json reply, track is not a object.";
+    qLog(Debug) << value;
+    return -1;
+  }
+  QJsonObject json_obj = value.toObject();
+
+  if (
+      !json_obj.contains("album") ||
+      !json_obj.contains("allowStreaming") ||
+      !json_obj.contains("artist") ||
+      !json_obj.contains("artists") ||
+      !json_obj.contains("audioQuality") ||
+      !json_obj.contains("duration") ||
+      !json_obj.contains("id") ||
+      !json_obj.contains("streamReady") ||
+      !json_obj.contains("title") ||
+      !json_obj.contains("trackNumber") ||
+      !json_obj.contains("url") ||
+      !json_obj.contains("volumeNumber") ||
+      !json_obj.contains("copyright")
+    ) {
+    qLog(Error) << "Tidal: Invalid Json reply, track is missing one or more values.";
+    qLog(Debug) << json_obj;
+    return -1;
+  }
+
+  QJsonValue json_value_artist = json_obj["artist"];
+  QJsonValue json_value_album = json_obj["album"];
+  QJsonValue json_duration = json_obj["duration"];
+  QJsonArray json_artists = json_obj["artists"].toArray();
+
+  int song_id = json_obj["id"].toInt();
+
+  QString title = json_obj["title"].toString();
+  QString urlstr = json_obj["url"].toString();
+  int track = json_obj["trackNumber"].toInt();
+  int disc = json_obj["volumeNumber"].toInt();
+  bool allow_streaming = json_obj["allowStreaming"].toBool();
+  bool stream_ready = json_obj["streamReady"].toBool();
+  QString copyright = json_obj["copyright"].toString();
+
+  if (!json_value_artist.isObject()) {
+    qLog(Error) << "Tidal: Invalid Json reply, track artist is not a object.";
+    qLog(Debug) << json_value_artist;
+    return -1;
+  }
+  QJsonObject json_artist = json_value_artist.toObject();
+  if (!json_artist.contains("name")) {
+    qLog(Error) << "Tidal: Invalid Json reply, track artist is missing name.";
+    qLog(Debug) << json_artist;
+    return -1;
+  }
+  QString artist = json_artist["name"].toString();
+
+  if (!json_value_album.isObject()) {
+    qLog(Error) << "Tidal: Invalid Json reply, track album is not a object.";
+    qLog(Debug) << json_value_album;
+    return -1;
+  }
+  QJsonObject json_album = json_value_album.toObject();
+  if (!json_album.contains("id") || !json_album.contains("title") || !json_album.contains("cover")) {
+    qLog(Error) << "Tidal: Invalid Json reply, track album is missing id, title or cover.";
+    qLog(Debug) << json_album;
+    return -1;
+  }
+  int album_id = json_album["id"].toInt();
+  if (album_id_requested != 0 && album_id_requested != album_id) {
+    qLog(Error) << "Tidal: Invalid Json reply, track album id is wrong.";
+    qLog(Debug) << json_album;
+    return -1;
+  }
+  QString album = json_album["title"].toString();
+  QString cover = json_album["cover"].toString();
+
+  if (!allow_streaming) {
+    qLog(Error) << "Tidal: Song" << artist << album << title << "is not allowStreaming";
+  }
+
+  if (!stream_ready) {
+    qLog(Error) << "Tidal: Song" << artist << album << title << "is not streamReady.";
+  }
+
+  QUrl url;
+  url.setScheme(url_handler_->scheme());
+  url.setPath(QString::number(song_id));
+
+  QVariant q_duration = json_duration.toVariant();
+  quint64 duration = 0;
+  if (q_duration.isValid() && (q_duration.type() == QVariant::Int || q_duration.type() == QVariant::Double)) {
+    duration = q_duration.toInt() * kNsecPerSec;
+  }
+  else {
+    qLog(Error) << "Tidal: Invalid duration for song.";
+    qLog(Debug) << json_duration;
+    return -1;
+  }
+
+  cover = cover.replace("-", "/");
+  QUrl cover_url (QString("%1/images/%2/%3.jpg").arg(kResourcesUrl).arg(cover).arg(service_->coversize()));
+
+  title.remove(Song::kTitleRemoveMisc);
+
+  //qLog(Debug) << "id" << song_id << "track" << track << "disc" << disc << "title" << title << "album" << album << "album artist" << album_artist << "artist" << artist << cover << allow_streaming << url;
+
+  song.set_source(Song::Source_Tidal);
+  song.set_album_id(album_id);
+  if (album_artist != artist) song.set_albumartist(album_artist);
+  song.set_album(album);
+  song.set_artist(artist);
+  song.set_title(title);
+  song.set_track(track);
+  song.set_disc(disc);
+  song.set_url(url);
+  song.set_length_nanosec(duration);
+  song.set_art_automatic(cover_url.toEncoded());
+  song.set_comment(copyright);
+  song.set_directory_id(0);
+  song.set_filetype(Song::FileType_Stream);
+  song.set_filesize(0);
+  song.set_mtime(0);
+  song.set_ctime(0);
+  song.set_valid(true);
+
+  return song_id;
+
+}
+
+void TidalRequest::GetAlbumCovers() {
+
+  for (Song &song : songs_) {
+    GetAlbumCover(song);
+  }
+
+  if (album_covers_requested_ == 1) emit UpdateStatus(tr("Retrieving album cover for %1 album...").arg(album_covers_requested_));
+  else emit UpdateStatus(tr("Retrieving album covers for %1 albums...").arg(album_covers_requested_));
+  emit ProgressSetMaximum(album_covers_requested_);
+  emit UpdateProgress(0);
+
+}
+
+void TidalRequest::GetAlbumCover(Song &song) {
+
+  if (requests_album_covers_.contains(song.album_id())) {
+    requests_album_covers_.insertMulti(song.album_id(), &song);
+    return;
+  }
+
+  album_covers_requested_++;
+  requests_album_covers_.insertMulti(song.album_id(), &song);
+
+  QUrl url(song.art_automatic());
+  QNetworkRequest req(url);
+  QNetworkReply *reply = network_->get(req);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(AlbumCoverReceived(QNetworkReply*, int, QUrl)), reply, song.album_id(), url);
+  replies_ << reply;
+
+}
+
+void TidalRequest::AlbumCoverReceived(QNetworkReply *reply, int album_id, QUrl url) {
+
+  if (replies_.contains(reply)) {
+    replies_.removeAll(reply);
+    reply->deleteLater();
+  }
+  else {
+    CheckFinish();
+    return;
+  }
+
+  if (!requests_album_covers_.contains(album_id)) {
+    CheckFinish();
+    return;
+  }
+
+  album_covers_received_++;
+  emit UpdateProgress(album_covers_received_);
+
+  QString error;
+  if (reply->error() != QNetworkReply::NoError) {
+    error = Error(QString("%1 (%2)").arg(reply->errorString()).arg(reply->error()));
+    requests_album_covers_.remove(album_id);
+    return;
+  }
+
+  QByteArray data = reply->readAll();
+  if (data.isEmpty()) {
+    error = Error(QString("Received empty image data for %1").arg(url.toString()));
+    requests_album_covers_.remove(album_id);
+    return;
+  }
+
+  QImage image;
+  if (image.loadFromData(data)) {
+
+    QDir dir;
+    if (dir.mkpath(service_->CoverCacheDir())) {
+      QString filename(service_->CoverCacheDir() + "/" + QString::number(album_id) + "-" + url.fileName());
+      if (image.save(filename, "JPG")) {
+        while (requests_album_covers_.contains(album_id)) {
+          Song *song = requests_album_covers_.take(album_id);
+          song->set_art_automatic(filename);
+        }
+      }
+    }
+
+  }
+  else {
+    error = Error(QString("Error decoding image data from %1").arg(url.toString()));
+  }
+
+  CheckFinish();
+
+}
+
+void TidalRequest::CheckFinish() {
+
+  if (!need_login_ &&
+      !artist_query_ &&
+      artist_albums_requested_ <= artist_albums_received_ &&
+      album_songs_requested_ <= album_songs_received_ &&
+      album_covers_requested_ <= album_covers_received_
+  ) {
+    if (songs_.isEmpty()) {
+      if (IsSearch()) {
+        if (no_match_) emit ErrorSignal(search_id_, tr("No match"));
+        else if (errors_.isEmpty()) emit ErrorSignal(search_id_, tr("Unknown error"));
+        else emit ErrorSignal(search_id_, errors_);
+      }
+      else {
+        if (no_match_) emit Results(songs_);
+        else if (errors_.isEmpty()) emit ErrorSignal(tr("Unknown error"));
+        else emit ErrorSignal(errors_);
+      }
+    }
+    else {
+      if (IsSearch()) {
+        emit SearchResults(search_id_, songs_);
+      }
+      else {
+        emit Results(songs_);
+      }
+    }
+
+  }
+
+}
+
+QString TidalRequest::Error(QString error, QVariant debug) {
+
+  qLog(Error) << "Tidal:" << error;
+  if (debug.isValid()) qLog(Debug) << debug;
+
+  if (!error.isEmpty()) {
+    errors_ += error;
+    errors_ += "<br />";
+  }
+  CheckFinish();
+
+  return error;
+
+}