From b385722d31f2e9d390661de9d9d6accb865d33c0 Mon Sep 17 00:00:00 2001
From: "Uwe L. Korn" <uwelk@xhochy.com>
Date: Tue, 28 Jan 2014 22:40:48 +0000
Subject: [PATCH] Add remote controlling of playback

---
 src/libtomahawk-playdarapi/Api_v1_5.cpp | 62 +++++++++++++++++++++++++
 src/libtomahawk-playdarapi/Api_v1_5.h   |  8 ++++
 2 files changed, 70 insertions(+)

diff --git a/src/libtomahawk-playdarapi/Api_v1_5.cpp b/src/libtomahawk-playdarapi/Api_v1_5.cpp
index ac3864b1e..21c7c26ea 100644
--- a/src/libtomahawk-playdarapi/Api_v1_5.cpp
+++ b/src/libtomahawk-playdarapi/Api_v1_5.cpp
@@ -20,6 +20,13 @@
 
 #include "Api_v1.h"
 
+#include "audio/AudioEngine.h"
+#include "utils/Logger.h"
+
+// Assumptions: QxtWebRequestEvent instance is called event and result is true on success
+#define JSON_REPLY( result, message ) jsonReply( event, Q_FUNC_INFO, message, !result )
+
+
 Api_v1_5::Api_v1_5( Api_v1* parent )
     : QObject( parent )
     , m_service( parent )
@@ -35,3 +42,58 @@ Api_v1_5::ping( QxtWebRequestEvent* event )
     m_service->postEvent( e );
 }
 
+void
+Api_v1_5::playback( QxtWebRequestEvent* event, const QString& command )
+{
+  if ( command == "next")
+  {
+      JSON_REPLY( QMetaObject::invokeMethod( AudioEngine::instance(), "next", Qt::QueuedConnection ) , "Skipping to the next track failed." );
+  }
+  else if ( command == "previous" )
+  {
+      JSON_REPLY( QMetaObject::invokeMethod( AudioEngine::instance(), "previous", Qt::QueuedConnection ), "Rewinding to the previous track failed." );
+  }
+  else if ( command == "playpause" )
+  {
+      JSON_REPLY( QMetaObject::invokeMethod( AudioEngine::instance(), "playPause", Qt::QueuedConnection ), "Play/Pause failed." );
+  }
+  else if ( command == "play" )
+  {
+      JSON_REPLY( QMetaObject::invokeMethod( AudioEngine::instance(), "play", Qt::QueuedConnection ), "Starting the playback failed." );
+  }
+  else if ( command == "pause" )
+  {
+      JSON_REPLY( QMetaObject::invokeMethod( AudioEngine::instance(), "pause", Qt::QueuedConnection ), "Pausing the current track failed." );
+  }
+  else if ( command == "stop" )
+  {
+      JSON_REPLY( QMetaObject::invokeMethod( AudioEngine::instance(), "stop", Qt::QueuedConnection ), "Stopping the current track failed." );
+  }
+  else if ( command == "lowervolume" )
+  {
+      JSON_REPLY( QMetaObject::invokeMethod( AudioEngine::instance(), "lowerVolume", Qt::QueuedConnection ), "Lowering volume failed." );
+  }
+  else if ( command == "raisevolume" )
+  {
+      JSON_REPLY( QMetaObject::invokeMethod( AudioEngine::instance(), "raiseVolume", Qt::QueuedConnection ), "Raising volume failed." );
+  }
+  else
+  {
+      m_service->sendJsonError( event, "No such playback command." );
+  }
+}
+
+void
+Api_v1_5::jsonReply( QxtWebRequestEvent* event, const char* funcInfo, const QString& errorMessage, bool isError )
+{
+  if ( isError )
+  {
+      tLog( LOGVERBOSE ) << funcInfo << errorMessage;
+      m_service->sendJsonError( event, errorMessage );
+  }
+  else
+  {
+      m_service->sendJsonOk( event );
+  }
+}
+
diff --git a/src/libtomahawk-playdarapi/Api_v1_5.h b/src/libtomahawk-playdarapi/Api_v1_5.h
index 6a0c5edb5..bab5af035 100644
--- a/src/libtomahawk-playdarapi/Api_v1_5.h
+++ b/src/libtomahawk-playdarapi/Api_v1_5.h
@@ -40,6 +40,14 @@ public slots:
      */
     void ping( QxtWebRequestEvent* event );
 
+    /**
+     *  Control playback.
+     */
+    void playback( QxtWebRequestEvent* event, const QString& command );
+
+protected:
+    void jsonReply( QxtWebRequestEvent* event, const char* funcInfo, const QString& errorMessage, bool isError );
+
 private:
     Api_v1* m_service;
 };