API Subsonic: first working version, still WIP (missing commands, no authentication)

src/api/subsonic/SubsonicId.cpp

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2019 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS 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.
+ *
+ * LMS 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 LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "SubsonicId.hpp"
+
+#include "utils/Logger.hpp"
+#include "utils/Utils.hpp"
+
+namespace API::Subsonic
+{
+
+boost::optional<Id>
+IdFromString(const std::string& id)
+{
+	std::vector<std::string> values {splitString(id, "-")};
+	if (values.size() != 2)
+	{
+		LMS_LOG(API_SUBSONIC, ERROR) << "Bad id format";
+		return {};
+	}
+
+	Id res;
+
+	std::string type {std::move(values[0])};
+	if (type == "artist")
+		res.type = Id::Type::Artist;
+	else if (type == "album")
+		res.type = Id::Type::Release;
+	else if (type == "track")
+		res.type = Id::Type::Track;
+	else
+	{
+		LMS_LOG(API_SUBSONIC, ERROR) << "Bad id format";
+		return {};
+	}
+
+	auto optId {readAs<Database::IdType>(values[1])};
+	if (!optId)
+	{
+		LMS_LOG(API_SUBSONIC, ERROR) << "Bad id format";
+		return {};
+	}
+
+	res.id = *optId;
+
+	return res;
+}
+
+std::string
+IdToString(const Id& id)
+{
+	std::string res;
+
+	switch (id.type)
+	{
+		case Id::Type::Artist:
+			res = "artist-";
+			break;
+		case Id::Type::Release:
+			res = "album-";
+			break;
+		case Id::Type::Track:
+			res = "track-";
+			break;
+	}
+
+	return res + std::to_string(id.id);
+}
+
+} // namespace API::Subsonic