Add ability to get a link to share Spotify playlists

ext/clementine-spotifyblob/spotifyclient.cpp

@@ -458,6 +458,12 @@ void SpotifyClient::SendPlaylistList() {
       msg->set_download_progress(0);
     }
     msg->set_nb_tracks(sp_playlist_num_tracks(playlist));
+    // URI - Blugh
+    char uri[256];
+    sp_link* link = sp_link_create_from_playlist(playlist);
+    sp_link_as_string(link, uri, arraysize(uri));
+    sp_link_release(link);
+    msg->set_uri(uri);
   }
 
   SendMessage(message);

ext/libclementine-spotifyblob/spotifymessages.proto

@@ -50,8 +50,9 @@ message Playlists {
     required bool is_mine = 4;
     required string owner= 5;
     required bool is_offline = 6;
+    required string uri = 7;
     // Offline sync progress between 0-100.
-    optional int32 download_progress = 7;
+    optional int32 download_progress = 8;
   }
 
   repeated Playlist playlist = 1;

src/internet/spotify/spotifyservice.cpp

@@ -80,6 +80,7 @@ SpotifyService::SpotifyService(Application* app, InternetModel* parent)
       playlist_context_menu_(nullptr),
       song_context_menu_(nullptr),
       playlist_sync_action_(nullptr),
+      get_url_to_share_playlist_(nullptr),
       remove_from_playlist_(nullptr),
       search_box_(new SearchBoxWidget(this)),
       search_delay_(new QTimer(this)),
@@ -454,6 +455,7 @@ void SpotifyService::PlaylistsUpdated(const pb::spotify::Playlists& response) {
     item->setData(msg.is_mine(), InternetModel::Role_CanBeModified);
     item->setData(InternetModel::PlayBehaviour_MultipleItems,
                   InternetModel::Role_PlayBehaviour);
+    item->setData(QUrl(QStringFromStdString(msg.uri())), InternetModel::Role_Url);
 
     root_->appendRow(item);
     playlists_ << item;
@@ -636,6 +638,9 @@ void SpotifyService::EnsureMenuCreated() {
   playlist_sync_action_ = playlist_context_menu_->addAction(
       IconLoader::Load("view-refresh"), tr("Make playlist available offline"),
       this, SLOT(SyncPlaylist()));
+  get_url_to_share_playlist_ =
+      playlist_context_menu_->addAction(tr("Get a URL to share this playlist"),
+          this, SLOT(GetCurrentPlaylistUrlToShare()));
   playlist_context_menu_->addSeparator();
   playlist_context_menu_->addAction(GetNewShowConfigAction());
 
@@ -770,6 +775,8 @@ void SpotifyService::ShowContextMenu(const QPoint& global_pos) {
         type == InternetModel::Type_UserPlaylist) {
       playlist_sync_action_->setData(qVariantFromValue(item));
       playlist_context_menu_->popup(global_pos);
+      current_playlist_url_ = item->data(InternetModel::Role_Url).toUrl();
+      get_url_to_share_playlist_->setVisible(type == InternetModel::Type_UserPlaylist);
       return;
     } else if (type == InternetModel::Type_Track) {
       current_song_url_ = item->data(InternetModel::Role_Url).toUrl();
@@ -795,6 +802,15 @@ void SpotifyService::GetCurrentSongUrlToShare() const {
   InternetService::ShowUrlBox(tr("Spotify song's URL"), url);
 }
 
+void SpotifyService::GetCurrentPlaylistUrlToShare() const {
+  QString url = current_playlist_url_.toEncoded();
+  // URLs we use can be opened with Spotify application, but I believe it's
+  // better to give website links instead.
+  url.replace(QRegExp("spotify:user:([^:]*):playlist:([^:]*)"),
+      "https://play.spotify.com/user/\\1/playlist/\\2");
+  InternetService::ShowUrlBox(tr("Spotify playlist's URL"), url);
+}
+
 void SpotifyService::ItemDoubleClicked(QStandardItem* item) {}
 
 void SpotifyService::DropMimeData(const QMimeData* data,

src/internet/spotify/spotifyservice.h

@@ -140,6 +140,7 @@ class SpotifyService : public InternetService {
   void SyncPlaylistProgress(const pb::spotify::SyncPlaylistProgress& progress);
   void ToplistLoaded(const pb::spotify::BrowseToplistResponse& response);
   void GetCurrentSongUrlToShare() const;
+  void GetCurrentPlaylistUrlToShare() const;
 
   void DoSearch();
 
@@ -168,9 +169,11 @@ class SpotifyService : public InternetService {
   QMenu* playlist_context_menu_;
   QMenu* song_context_menu_;
   QAction* playlist_sync_action_;
+  QAction* get_url_to_share_playlist_;
   QList<QAction*> playlistitem_actions_;
   QAction* remove_from_playlist_;
   QUrl current_song_url_;
+  QUrl current_playlist_url_;
 
   SearchBoxWidget* search_box_;