Add artist biography from Google KG.

#5416

src/CMakeLists.txt

@@ -297,6 +297,7 @@ set(SOURCES
   smartplaylists/wizard.cpp
   smartplaylists/wizardplugin.cpp
 
+  songinfo/artistbiography.cpp
   songinfo/artistinfoview.cpp
   songinfo/collapsibleinfoheader.cpp
   songinfo/collapsibleinfopane.cpp
@@ -588,6 +589,7 @@ set(HEADERS
   smartplaylists/wizard.h
   smartplaylists/wizardplugin.h
 
+  songinfo/artistbiography.h
   songinfo/artistinfoview.h
   songinfo/collapsibleinfoheader.h
   songinfo/collapsibleinfopane.h

src/songinfo/artistbiography.cpp

@@ -0,0 +1,80 @@
+/* This file is part of Clementine.
+   Copyright 2016, John Maguire <john.maguire@gmail.com>
+
+   Clementine 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.
+
+   Clementine 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 Clementine.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "artistbiography.h"
+
+#include <QLocale>
+
+#include <qjson/parser.h>
+
+#include "core/closure.h"
+#include "core/network.h"
+#include "songinfo/songinfotextview.h"
+
+namespace {
+const char* kArtistBioUrl = "https://data.clementine-player.org/fetchbio";
+
+QString GetLocale() {
+  QLocale locale;
+  return locale.name().split('_')[0];
+}
+
+}  // namespace
+
+ArtistBiography::ArtistBiography() : network_(new NetworkAccessManager) {}
+
+ArtistBiography::~ArtistBiography() {}
+
+void ArtistBiography::FetchInfo(int id, const Song& metadata) {
+  if (metadata.artist().isEmpty()) {
+    emit Finished(id);
+    return;
+  }
+
+  QUrl url(kArtistBioUrl);
+  url.addQueryItem("artist", metadata.artist());
+  url.addQueryItem("lang", GetLocale());
+
+  QNetworkRequest request(url);
+  QNetworkReply* reply = network_->get(request);
+
+  NewClosure(reply, SIGNAL(finished()), [this, reply, id]() {
+    reply->deleteLater();
+
+    QJson::Parser parser;
+    QVariantMap response = parser.parse(reply).toMap();
+
+    QString body = response["articleBody"].toString();
+    QString url = response["url"].toString();
+
+    CollapsibleInfoPane::Data data;
+    data.id_ = url;
+    data.title_ = tr("Biography");
+    data.type_ = CollapsibleInfoPane::Data::Type_Biography;
+
+    QString text;
+    text +=
+        "<p><a href=\"" + url + "\">" + tr("Open in your browser") + "</a></p>";
+
+    text += body;
+    SongInfoTextView* editor = new SongInfoTextView;
+    editor->SetHtml(text);
+    data.contents_ = editor;
+    emit InfoReady(id, data);
+    emit Finished(id);
+  });
+}

src/songinfo/artistbiography.h

@@ -0,0 +1,40 @@
+/* This file is part of Clementine.
+   Copyright 2016, John Maguire <john.maguire@gmail.com>
+
+   Clementine 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.
+
+   Clementine 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 Clementine.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef ARTISTBIOGRAPHY_H
+#define ARTISTBIOGRAPHY_H
+
+#include <memory>
+
+#include "songinfoprovider.h"
+
+class NetworkAccessManager;
+
+class ArtistBiography : public SongInfoProvider {
+  Q_OBJECT
+
+ public:
+  ArtistBiography();
+  ~ArtistBiography();
+
+  void FetchInfo(int id, const Song& metadata) override;
+
+ private:
+  std::unique_ptr<NetworkAccessManager> network_;
+};
+
+#endif  // ARTISTBIOGRAPHY_H

src/songinfo/artistinfoview.cpp

@@ -17,6 +17,7 @@
 
 #include "artistinfoview.h"
 
+#include "songinfo/artistbiography.h"
 #include "songinfo/songinfofetcher.h"
 #include "songinfo/songkickconcerts.h"
 #include "songinfo/spotifyimages.h"
@@ -25,6 +26,7 @@
 ArtistInfoView::ArtistInfoView(QWidget* parent) : SongInfoBase(parent) {
   fetcher_->AddProvider(new SongkickConcerts);
   fetcher_->AddProvider(new SpotifyImages);
+  fetcher_->AddProvider(new ArtistBiography);
 }
 
 ArtistInfoView::~ArtistInfoView() {}