/** @file
 * @author Edouard DUPIN
 * @copyright 2016, Edouard DUPIN, all right reserved
 * @license APACHE v2.0 (see license file)
 */
#pragma once

#include <etk/types.hpp>

/**
 * @brief This is a simple interface to converte application display string in a generic current system language
 * @note: The current name of language reprenent the file name, then if you want to get the machine language in an other than generic passed, juste add it.
 * Generic langage char: (all translation might be done in UTF-8 this simplify interface)
 * English : "EN"
 * French : "FR"
 * German : "DE"
 * Spanish : "SP"
 * Japanese : "JA"
 * Italian : "IT"
 * Korean : "KO"
 * Russian : "RU"
 * Portuguese, Brazilian : "PT"
 * Chinese : "ZH"
 */
namespace etalsnart {
	/**
	 * @brief Set the path folder of the translation files
	 * @param[in] _lib Library name that the path depend
	 * @param[in] _path ETK generic path (DATA:... or /xxx)
	 * @param[in] _major This path is the major path (The last loaded, the one which overload all)
	 */
	void addPath(const std::string& _lib, const std::string& _path, bool _major = false);
	/**
	 * @brief Get the current paths of the library
	 * @param[in] _lib Library name that the path depend
	 * @return Path name.
	 */
	const std::string& getPaths(const std::string& _lib);
	/**
	 * @brief Set the default language to load data (the default language might contain all internal data for the basic application)
	 * @param[in] _lang Language to load : ("EN" for english, "FR" for french, "DE" for German, "SP" for spanish ...)
	 */
	void setLanguageDefault(const std::string& _lang);
	/**
	 * @brief Get the current language selected
	 * @return The 2/3 char defining the language
	 */
	const std::string& getLanguageDefault();
	/**
	 * @brief Set the language to load data. when no data availlable, we get the default language.
	 * @param[in] _lang Language to load : ("EN" for english, "FR" for french, "DE" for German, "SP" for spanish ...)
	 */
	void setLanguage(const std::string& _lang);
	/**
	 * @brief Get the current language loaded
	 * @return The 2/3 char defining the language
	 */
	const std::string& getLanguage();
	/**
	 * @brief Automatic detection of the system language
	 */
	void autoDetectLanguage();
	/**
	 * @brief Translate a specific text (if not find, it will be retured the same text).
	 * @param[in] _instance Text to translate.
	 * @return The tranlated text.
	 */
	std::string get(const std::string& _instance);
};
// Here we define a simple macro to Translate all string simply:
#define TRANSLATE(a) etalsnart::get(a)