Add support for Twitter timeline in artist info.

src/CMakeLists.txt

@@ -277,6 +277,7 @@ set(SOURCES
   songinfo/songinfotextview.cpp
   songinfo/songinfoview.cpp
   songinfo/songplaystats.cpp
+  songinfo/twitterartistinfo.cpp
   songinfo/ultimatelyricsprovider.cpp
   songinfo/ultimatelyricsreader.cpp
 
@@ -529,6 +530,7 @@ set(HEADERS
   songinfo/songinfotextview.h
   songinfo/songinfoview.h
   songinfo/songplaystats.h
+  songinfo/twitterartistinfo.h
   songinfo/ultimatelyricsprovider.h
   songinfo/ultimatelyricsreader.h
 

src/songinfo/artistinfoview.cpp

@@ -19,6 +19,7 @@
 #include "echonestbiographies.h"
 #include "echonestimages.h"
 #include "songinfofetcher.h"
+#include "twitterartistinfo.h"
 #include "widgets/prettyimageview.h"
 
 #ifdef HAVE_LIBLASTFM
@@ -31,6 +32,7 @@ ArtistInfoView::ArtistInfoView(QWidget *parent)
 {
   fetcher_->AddProvider(new EchoNestBiographies);
   fetcher_->AddProvider(new EchoNestImages);
+  fetcher_->AddProvider(new TwitterArtistInfo);
 #ifdef HAVE_LIBLASTFM
   fetcher_->AddProvider(new EchoNestSimilarArtists);
   fetcher_->AddProvider(new EchoNestTags);

src/songinfo/twitterartistinfo.cpp

@@ -0,0 +1,97 @@
+#include "twitterartistinfo.h"
+
+#include <echonest/Artist.h>
+
+#include <qjson/parser.h>
+
+#include "core/closure.h"
+#include "songinfotextview.h"
+
+const char* TwitterArtistInfo::kTwitterBucket = "id:twitter";
+const char* TwitterArtistInfo::kTwitterTimelineUrl =
+    "https://api.twitter.com/1/statuses/user_timeline.json?include_rts=1&count=10&screen_name=%1";
+
+TwitterArtistInfo::TwitterArtistInfo()
+    : network_(this) {
+}
+
+void TwitterArtistInfo::FetchInfo(int id, const Song& metadata) {
+  Echonest::Artist::SearchParams params;
+  params.push_back(qMakePair(Echonest::Artist::Name, QVariant(metadata.artist())));
+  params.push_back(qMakePair(Echonest::Artist::IdSpace, QVariant(kTwitterBucket)));
+
+  QNetworkReply* reply = Echonest::Artist::search(params);
+  NewClosure(reply, SIGNAL(finished()), this, SLOT(ArtistSearchFinished(QNetworkReply*, int)), reply, id);
+}
+
+void TwitterArtistInfo::ArtistSearchFinished(QNetworkReply* reply, int id) {
+  reply->deleteLater();
+  try {
+    Echonest::Artists artists = Echonest::Artist::parseSearch(reply);
+    if (artists.isEmpty()) {
+      qLog(Debug) << "Failed to find artist in echonest";
+      return;
+    }
+
+    const Echonest::Artist& artist = artists[0];
+    QString twitter_id;
+    foreach (const Echonest::ForeignId& id, artist.foreignIds()) {
+      if (id.catalog == "twitter") {
+        twitter_id = id.foreign_id;
+        break;
+      }
+    }
+
+    if (twitter_id.isEmpty()) {
+      qLog(Debug) << "Failed to fetch Twitter foreign id for artist";
+      return;
+    }
+
+    QStringList split = twitter_id.split(':');
+    if (split.count() != 3) {
+      qLog(Debug) << "Funky twitter id:" << twitter_id;
+      return;
+    }
+    FetchUserTimeline(split[2], id);
+  } catch (Echonest::ParseError& e) {
+    qLog(Error) << "Error parsing echonest reply:" << e.errorType() << e.what();
+  }
+}
+
+void TwitterArtistInfo::FetchUserTimeline(const QString& twitter_id, int id) {
+  QUrl url(QString(kTwitterTimelineUrl).arg(twitter_id));
+  QNetworkReply* reply = network_.get(QNetworkRequest(url));
+  NewClosure(reply, SIGNAL(finished()), this,
+             SLOT(UserTimelineRequestFinished(QNetworkReply*, QString, int)), reply, twitter_id, id);
+}
+
+void TwitterArtistInfo::UserTimelineRequestFinished(QNetworkReply* reply, const QString& twitter_id, int id) {
+  QJson::Parser parser;
+  bool ok = false;
+  QVariant result = parser.parse(reply, &ok);
+  if (!ok) {
+    qLog(Error) << "Error parsing Twitter reply";
+    return;
+  }
+  CollapsibleInfoPane::Data data;
+  data.type_ = CollapsibleInfoPane::Data::Type_Biography;
+  data.id_ = "twitter/" + twitter_id;
+  data.title_ = QString("Twitter (%1)").arg(twitter_id);
+
+  QString html;
+  QVariantList tweets = result.toList();
+  foreach (const QVariant& v, tweets) {
+    QVariantMap tweet = v.toMap();
+    QString text = tweet["text"].toString();
+    html += "<div>";
+    html += Qt::escape(text);
+    html += "</div>";
+  }
+
+  SongInfoTextView* text_view = new SongInfoTextView;
+  text_view->SetHtml(html);
+  data.contents_ = text_view;
+
+  emit InfoReady(id, data);
+  emit Finished(id);
+}

src/songinfo/twitterartistinfo.h

@@ -0,0 +1,29 @@
+#ifndef TWITTERARTISTINFO_H
+#define TWITTERARTISTINFO_H
+
+#include "songinfoprovider.h"
+
+#include "core/network.h"
+
+class TwitterArtistInfo : public SongInfoProvider {
+  Q_OBJECT
+ public:
+  TwitterArtistInfo();
+
+  void FetchInfo(int id, const Song& metadata);
+
+ private slots:
+  void ArtistSearchFinished(QNetworkReply* reply, int id);
+  void UserTimelineRequestFinished(
+      QNetworkReply* reply, const QString& twitter_id, int id);
+
+ private:
+  void FetchUserTimeline(const QString& twitter_id, int id);
+
+  NetworkAccessManager network_;
+
+  static const char* kTwitterBucket;
+  static const char* kTwitterTimelineUrl;
+};
+
+#endif