/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2022                                                               *
 *                                                                                       *
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 * or substantial portions of the Software.                                              *
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 ****************************************************************************************/

#ifndef __OPENSPACE_MODULE_SOFTWAREINTEGRATION___SYNCABLEFLOATDATASTORAGE___H__
#define __OPENSPACE_MODULE_SOFTWAREINTEGRATION___SYNCABLEFLOATDATASTORAGE___H__

#include <mutex>
#include <unordered_map>

#include <openspace/util/syncable.h>
#include <modules/softwareintegration/utils.h>

namespace openspace {

using namespace softwareintegration;

class SyncableFloatDataStorage : public Syncable {
public:
	/* ====================== Types ===================== */
	struct Value {
		// a dataset stored like x1, y1, z1, x2, y2 ....
		std::vector<float> data;
		bool hasEncoded = false;
		bool syncDirty = true;
		bool dirty = true;
	};
	using ValueData = decltype(Value::data);
	using SceneStorage = std::unordered_map<storage::Key, Value>;
	using Identifier = std::string;
	using Storage = std::unordered_map<Identifier, SceneStorage>;
	using Iterator = Storage::iterator;
	using SceneIterator = SceneStorage::iterator;
	/* ================================================== */

	/* ============== SyncEngine functions ============== */
	virtual void encode(SyncBuffer* syncBuffer) override;
	virtual void decode(SyncBuffer* syncBuffer) override;
	virtual void postSync(bool isMaster) override;
	/* ================================================== */

	const ValueData& fetch(const Identifier& identifier, const storage::Key key);
	bool isDirty(const Identifier& identifier, const storage::Key key);
	bool isSyncDirty(const Identifier& identifier, const storage::Key key); 
	void store(const Identifier& identifier, const storage::Key key, const ValueData& data);
	std::string getStringOfAllKeysInStorage();

private:
	/* =============== Utility functions ================ */
	bool erase(const Identifier& identifier, const storage::Key key);

	void insertAssign(const Identifier& identifier, const storage::Key key, const Value& value);

	size_t count(const Identifier& identifier, const storage::Key key);
	size_t count(const Identifier& identifier);
	/* ================================================== */

	std::mutex _mutex;
	Storage _storage;
};

} // namespace openspace

#endif // __OPENSPACE_MODULE_SOFTWAREINTEGRATION___SYNCABLEFLOATDATASTORAGE___H__