/**
 * @file Translation.h
 * @brief Translation class
 * @date May 9, 2017
 * @author J.C.M. Raats
 * @copyright 2015 Dual Inventive Technology Centre B.V.
 *
 * Translation class. Use this class to get a message in a specific language
 */
#ifndef INCLUDE_DI_TRANSLATION_H_
#define INCLUDE_DI_TRANSLATION_H_

#include <mutex>
#include <shared_mutex>
#include <string>
#include <memory>
#include <map>

namespace Di {

/**
 * @class Translation
 *
 * Translation class. Use this class to get a message in a specific language
 */
class Translation {
 public:
	explicit Translation(const std::string &basedir);
	std::string getDefaultTranslation(const std::string key, ...);
	std::string getTranslation(const std::string &key, const std::string langCode, ...);
	void reloadLanguage(const std::string &langCode);
	void setDefaultLanguage(const std::string &langCode);
	bool isDefaultLanguage(const std::string &langCode);

 private:
	mutable std::shared_timed_mutex __mutex;

	std::string __basedir;
	std::string __defaultLanguage;
	std::map<std::string, std::map<std::string, std::string>> __translations;

	std::shared_ptr<std::string> __getTranslationText(const std::string &key, const std::string &langCode);
	std::string __formatTranslationText(std::shared_ptr<std::string> format, va_list args);
	std::shared_ptr<std::string> __getTranslation(const std::string &key, const std::string &langCode);
	void __loadLanguage(const std::string &langCode, bool forceReload);
	std::string __getFilePath(const std::string &langCode);
	bool __fileExists(const std::string &filename);
};

}  // namespace Di

#endif  // INCLUDE_DI_TRANSLATION_H_