From 913663eef098950ade976cc108f47599199acf52 Mon Sep 17 00:00:00 2001
From: Christian Muehlhaeuser <muesli@gmail.com>
Date: Sat, 5 May 2012 16:40:09 +0200
Subject: [PATCH] * Added similar tracks method to liblastfm.

---
 thirdparty/liblastfm2/src/types/Track.cpp | 40 +++++++++++++++++++++++
 thirdparty/liblastfm2/src/types/Track.h   |  8 +++++
 2 files changed, 48 insertions(+)

diff --git a/thirdparty/liblastfm2/src/types/Track.cpp b/thirdparty/liblastfm2/src/types/Track.cpp
index 0111b8a9d..e8cfc9fa3 100644
--- a/thirdparty/liblastfm2/src/types/Track.cpp
+++ b/thirdparty/liblastfm2/src/types/Track.cpp
@@ -454,6 +454,46 @@ lastfm::Track::params( const QString& method, bool use_mbid ) const
 }
 
 
+QNetworkReply* 
+lastfm::Track::getSimilar( int limit ) const
+{
+    QMap<QString, QString> map = params("getSimilar");
+    if ( limit != -1 ) map["limit"] = QString::number( limit );
+    map["autocorrect"] = "1";
+    return ws::get( map );
+}
+
+
+QMap<int, QPair< QString, QString > > /* static */
+lastfm::Track::getSimilar( QNetworkReply* r )
+{
+    QMap<int, QPair< QString, QString > > tracks;
+    try
+    {
+        QByteArray b = r->readAll();
+        XmlQuery lfm = b;
+        foreach (XmlQuery e, lfm.children( "track" ))
+        {
+            QPair< QString, QString > track;
+            track.first = e["name"].text();
+
+            XmlQuery artist = e.children( "artist" ).first();
+            track.second = artist["name"].text();
+
+            // convert floating percentage to int in range 0 to 10,000
+            int const match = e["match"].text().toFloat() * 100;
+            tracks.insertMulti( match, track );
+        }
+    }
+    catch (ws::ParseError& e)
+    {
+        qWarning() << e.what();
+    }
+    
+    return tracks;
+}
+
+
 QNetworkReply*
 lastfm::Track::getTopTags() const
 {
diff --git a/thirdparty/liblastfm2/src/types/Track.h b/thirdparty/liblastfm2/src/types/Track.h
index 56e97b272..4fa0c7043 100644
--- a/thirdparty/liblastfm2/src/types/Track.h
+++ b/thirdparty/liblastfm2/src/types/Track.h
@@ -244,6 +244,14 @@ public:
     /** See last.fm/api Track section */
     QNetworkReply* share( const QStringList& recipients, const QString& message = "", bool isPublic = true ) const;
 
+    QNetworkReply* getSimilar( int limit = -1 ) const;
+    /** The match percentage is returned from last.fm as a 4 significant
+      * figure floating point value. So we multply it by 100 to make an
+      * integer in the range of 0 to 10,000. This is possible confusing
+      * for you, but I felt it best not to lose any precision, and floats
+      * aren't much fun. */
+    static QMap<int, QPair< QString, QString > > getSimilar( QNetworkReply* );
+
     /** you can get any QNetworkReply TagList using Tag::list( QNetworkReply* ) */
     QNetworkReply* getTags() const; // for the logged in user
     QNetworkReply* getTopTags() const;