/*
* Copyright (c) 2021-2022, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
* See full license text in LICENSE file at top of project tree
*/

#ifndef __I18N_LANGS_H__
#define __I18N_LANGS_H__

namespace i2p {
    namespace i18n {
        class Locale {
        public:
            Locale(
                    const std::string &language,
                    const std::map <std::string, std::string> &strings,
                    const std::map <std::string, std::vector<std::string>> &plurals,
                    std::function<int(int)> formula
            ) : m_Language(language), m_Strings(strings), m_Plurals(plurals), m_Formula(formula) {};

            // Get activated language name for webconsole
            std::string GetLanguage() const {
                return m_Language;
            }

            std::string GetString(const std::string &arg) const {
                const auto it = m_Strings.find(arg);
                if (it == m_Strings.end()) {
                    return arg;
                } else {
                    return it->second;
                }
            }

            std::string GetPlural(const std::string &arg, const std::string &arg2, const int &n) const {
                const auto it = m_Plurals.find(arg2);
                if (it == m_Plurals.end()) // not found, fallback to english
                {
                    return n == 1 ? arg : arg2;
                } else {
                    int form = m_Formula(n);
                    return it->second[form];
                }
            }

        private:
            const std::string m_Language;
            const std::map <std::string, std::string> m_Strings;
            const std::map <std::string, std::vector<std::string>> m_Plurals;
            std::function<int(int)> m_Formula;
        };

        struct langData {
            std::string LocaleName; // localized name
            std::string ShortCode;  // short language code, like "en"
            std::function<std::shared_ptr<const i2p::i18n::Locale>(void)> LocaleFunc;
        };

        // Add localization here with language name as namespace
        namespace afrikaans { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }
        namespace armenian { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }
        namespace chinese { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }
        namespace english { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }
        namespace french { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }
        namespace german { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }
        namespace russian { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }
        namespace turkmen { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }
        namespace ukrainian { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }
        namespace uzbek { std::shared_ptr<const i2p::i18n::Locale> GetLocale(); }

        /**
         * That map contains international language name lower-case, name in it's language and it's code
         */
        static std::map <std::string, langData> languages
                {
                        {"afrikaans", {"Afrikaans",         "af",    i2p::i18n::afrikaans::GetLocale}},
                        {"armenian",  {"հայերէն",           "hy",    i2p::i18n::armenian::GetLocale}},
                        {"chinese",   {"简体字",            "zh-CN", i2p::i18n::chinese::GetLocale}},
                        {"english",   {"English",           "en",    i2p::i18n::english::GetLocale}},
                        {"french",    {"Français",          "fr",    i2p::i18n::french::GetLocale}},
                        {"german",    {"Deutsch",           "de",    i2p::i18n::german::GetLocale}},
                        {"russian",   {"русский язык",      "ru",    i2p::i18n::russian::GetLocale}},
                        {"turkmen",   {"türkmen dili",      "tk",    i2p::i18n::turkmen::GetLocale}},
                        {"ukrainian", {"украї́нська мо́ва", "uk",    i2p::i18n::ukrainian::GetLocale}},
                        {"uzbek",     {"Oʻzbek",            "uz",    i2p::i18n::uzbek::GetLocale}},
                };

    } // i18n
} // i2p

#endif // __I18N_LANGS_H__