/*
 * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef OHOS_GLOBAL_I18N_LOCALE_CONFIG_H
#define OHOS_GLOBAL_I18N_LOCALE_CONFIG_H

#include <map>
#include <mutex>
#include <vector>
#include <set>
#include <string>
#include <unordered_map>
#include <unordered_set>
#ifdef SUPPORT_GRAPHICS
#include "configuration.h"
#include <common_event_data.h>
#endif
#include "i18n_types.h"
#include "unicode/locid.h"

namespace OHOS {
namespace Global {
namespace I18n {
class LocaleConfig {
public:
    LocaleConfig() = default;
    virtual ~LocaleConfig() = default;
    
    /**
     * @brief Set the System Language to language Tag.
     *
     * @param languageTag language tag to set.
     * @return I18nErrorCode Return SUCCESS indicates that the setting was successful.
     */
    static I18nErrorCode SetSystemLanguage(const std::string &languageTag);
    
    /**
     * @brief Set the System Region to region tag.
     *
     * @param regionTag region tag to set.
     * @return I18nErrorCode Return SUCCESS indicates that the setting was successful.
     */
    static I18nErrorCode SetSystemRegion(const std::string &regionTag);

    /**
     * @brief Set the System Locale to locale tag.
     *
     * @param localeTag locale tag to set.
     * @return I18nErrorCode Return SUCCESS indicates that the setting was successful.
     */
    static I18nErrorCode SetSystemLocale(const std::string &localeTag);

    /**
     * @brief Set system hour to 12 or 24-hour clock.
     *
     * @param option When flag is true, the system adopts 24-hour clock;
     * When flag is false, the system adopts 12-hour clock; When flag is empty string, the system adopts
     * system locale default behavior.
     * @return I18nErrorCode Return SUCCESS indicates that the setting was successful.
     */
    static I18nErrorCode Set24HourClock(const std::string &option);

    /**
     * @brief Set system digit to local digit or Arbic digit.
     *
     * @param flag When flag is True, the system adopts local digit;
     * When flag is False, the system doesn't adopt local digit;
     * @return I18nErrorCode Return SUCCESS indicates that the setting was successful.
     */
    static I18nErrorCode SetUsingLocalDigit(bool flag);
    static std::string GetSystemLanguage();
    static std::string GetSystemRegion();
    static std::string GetSystemLocale();
    static void GetSystemLanguages(std::vector<std::string> &ret);
    static void GetSystemCountries(std::vector<std::string> &ret);
    static bool IsSuggested(const std::string &language);
    static bool IsSuggested(const std::string &language, const std::string &region);
    static std::string GetDisplayLanguage(const std::string &language, const std::string &displayLocale,
        bool sentenceCase);
    static std::string GetDisplayRegion(const std::string &region, const std::string &displayLocale,
        bool sentenceCase);
    static bool IsRTL(const std::string &locale);
    static std::string GetValidLocale(const std::string &localeTag);
#ifdef SUPPORT_GRAPHICS
    static bool Is24HourClock(sptr<IRemoteObject> &proxy);
#endif
    static bool IsEmpty24HourClock();
    static bool Is24HourClock();
    static std::string GetSystemHour();
    static bool GetUsingLocalDigit();
    static std::unordered_set<std::string> GetBlockedLanguages();
    static std::unordered_set<std::string> GetBlockedRegions();
    static std::unordered_set<std::string> GetLanguageBlockedRegions();
    static bool IsValidLanguage(const std::string &language);
    static bool IsValidRegion(const std::string &region);
    static bool IsValidTag(const std::string &tag);
    static bool IsValid24HourClockValue(const std::string &tag);

private:
    static void Split(const std::string &src, const std::string &sep, std::vector<std::string> &dest);
    static void Split(const std::string &src, const std::string &sep, std::unordered_set<std::string> &dest);
    static I18nErrorCode UpdateSystemLocale(const std::string &language);
    static constexpr uint32_t LANGUAGE_LEN = 2;
    static constexpr uint32_t LOCALE_ITEM_COUNT = 3;
    static constexpr uint32_t SCRIPT_OFFSET = 2;
    static const char *LANGUAGE_KEY;
    static const char *LOCALE_KEY;
    static const char *HOUR_KEY;
    static const char *UPGRADE_LOCALE_KEY;
    static const char *DEFAULT_LOCALE_KEY;
    static const char *DEFAULT_LANGUAGE_KEY;
    static const char *DEFAULT_REGION_KEY;
    static const char *SIM_COUNTRY_CODE_KEY;
    static const char *SUPPORTED_LOCALES_PATH;
    static constexpr int CONFIG_LEN = 128;
    static const char *SUPPORTED_LOCALES_NAME;
    static const char *SUPPORTED_REGIONS_NAME;
    static const char *WHITE_LANGUAGES_NAME;
    static const char *FORBIDDEN_REGIONS_NAME;
    static const char *FORBIDDEN_LANGUAGES_NAME;
    static const char *REGIONS_LANGUAGES_PATH;
    static const char *REGIONS_LANGUAGES_NAME;
    static const char *SUPPORT_LOCALES_PATH;
    static const char *SUPPORT_LOCALES_NAME;
    static const char *DEFAULT_LOCALE;
    static const char *supportLocalesTag;
    static const char *LANG_PATH;
    static const char *rootTag;
    static const char *secondRootTag;
    static const char *rootRegion;
    static const char *secondRootRegion;
    static const uint32_t ELEMENT_NUM = 2;

    static const char *SUPPORTED_LANGUAGE_EN_LATN_PATH;
    static const char *SUPPORTED_LANGUAGE_EN_LATN_NAME;

    static const char *OVERRIDE_SUPPORTED_REGIONS_NAME;
    static const char *OVERRIDE_SUPPORTED_REGIONS_PATH;
    static const char *DIALECT_LANGS_PATH;
    static const char *DIALECT_LANGS_NAME;
    static const char *REGION_PATH;
    static const std::string HOUR_EVENT_DATA;
    static std::mutex dialectLocaleMutex;
    static std::mutex region2DisplayNameMutex;
    static std::mutex locale2DisplayNameMutex;

    static const std::unordered_set<std::string>& GetSupportedLocales();
    static const std::unordered_set<std::string>& GetForbiddenRegions();
    static const std::unordered_set<std::string>& GetSupportedRegions();
    static void GetCountriesFromSim(std::vector<std::string> &simCountries);
    static void GetRelatedLocales(std::unordered_set<std::string> &relatedLocales,
        const std::vector<std::string> countries);
    static void GetListFromFile(const char *path, const char *resourceName, std::unordered_set<std::string> &ret);
    static void LoadRegionsLanguages(std::unordered_set<std::string>& forbiddenRegions);
    static void Expunge(std::unordered_set<std::string> &src, const std::unordered_set<std::string> &another);
    static std::string GetMainLanguage(const std::string &language);
    static std::string GetCountry(const std::string& parameter);
    static std::string GetDisplayLanguageWithDialect(const std::string &language, const std::string &displayLocale);
    static std::string GetDisplayOverrideRegion(const std::string &region, const std::string &displayLocale);
    static std::string ComputeLocale(const std::string &displayLocale);
    static void ReadLangData(const char *langDataPath);
    static void ReadRegionData(const char *regionDataPath);
    static void ProcessForbiddenRegions(const std::unordered_set<std::string> &forbiddenRegions);
    static void SetSupportedDialectLocales(const char* key, const char* value);
    static void SetRegion2DisplayName(const char* key, const char* value);
    static void SetLocale2DisplayName(const char* key, const char* value);
    static bool Is24HourLocale(const std::string& systemLocale);
    static bool HasDesignator(const std::string& inFormat, const char designator);
    static void QueryUpgradeLocale();

#ifdef SUPPORT_GRAPHICS
    /**
     * @brief Provided for updating i18n configuration include language and hour24.
     *
     * @param key Indicats configuration key.
     * @param value Indicates configuration value.
     */
    static void UpdateConfiguration(const char *key, const std::string &value);

    /**
     * @brief Provided for public i18n event include locale-change event and time-change event.
     *
     * @param eventType Indicates event type.
     * @return I18nErrorCode Return SUCCESS indicates that the setting was successful.
     */
    static I18nErrorCode PublishCommonEvent(const std::string &eventType);
#endif

    /**
     * @brief Change language part of system locale to languageTag.
     *
     * @param languageTag Indicats language tag use to update locale.
     * @return std::string Return locale tag.
     */
    static std::string UpdateLanguageOfLocale(const std::string &languageTag);

    /**
     * @brief Provided for combining language, script, region, extend param to locale.
     *
     * @param languageTag Indicate language part in locale.
     * @param scriptTag Indicate script part in locale.
     * @param regionTag Indicate region part in locale.
     * @param extendParamTag Indicate extend param part in locale.
     * @return std::string Return locale tag.
     */
    static std::string CreateLocale(const std::string &languageTag, const std::string &scriptTag,
        const std::string &regionTag, const std::string &extendParamTag);
    
    /**
     * @brief Create a locale tag from region tag. Use icu to fill in missing parts.
     *
     * @param regionTag Indicats region tag used to create locale.
     * @return std::string Return locale tag.
     */
    static std::string CreateLocaleFromRegion(const std::string &regionTag);

    /**
     * @brief Change the region part of system locale to regionTag.
     *
     * @param regionTag Indicates region tag used to update locale.
     * @return std::string Return locale Tag.
     */
    static std::string UpdateRegionOfLocale(const std::string &regionTag);

    /**
     * @brief Change number system extend param part of locale.
     *
     * @param flag When flag is true, change number system extend param part to local digit of system language,
     * when flag is false, remove number system extend param part.
     * @return std::string Return locale Tag.
     */
    static std::string UpdateNumberSystemOfLocale(const std::string &localDigitTag, bool flag);

    /**
     * @brief Add local digit tag to number system extend param of locale.
     *
     * @param localDigitTag Indicats local digit tag which define in localDigitMap.
     * @return std::string Return locale Tag.
     */
    static std::string AddLocalDigitToLocale(const std::string &localDigitTag);

    /**
     * @brief Remove local digit tag from number system extend param of locale.
     *
     * @param localDigitTag Indicats local digit tag which define in localDigitMap.
     * @return std::string Return locale Tag.
     */
    static std::string RemoveLocalDigitFromLocale(const std::string &localDigitTag);
    static void ExtendWhiteLanguages();
    static std::unordered_set<std::string> supportedLocales;
    static std::unordered_set<std::string> supportedRegions;
    static std::unordered_set<std::string> supportLocales;
    static std::unordered_set<std::string> dialectLang;
    static std::unordered_set<std::string> overrideSupportedRegions;
    static std::unordered_set<std::string> blockedLanguages;
    static std::unordered_set<std::string> blockedRegions;
    static std::unordered_map<std::string, std::unordered_set<std::string>> blockedLanguageRegions;
    static std::unordered_set<std::string> whiteLanguages;
    static std::set<std::string> extendWhiteLanguageList;
    static std::map<std::string, std::string> supportedDialectLocales;
    static std::unordered_map<std::string, std::string> dialectMap;
    static std::unordered_map<std::string, std::string> localDigitMap;
    static std::map<std::string, std::string> locale2DisplayName;
    static std::map<std::string, std::string> region2DisplayName;
    static std::string currentDialectLocale;
    static std::string currentOverrideRegion;
    static std::set<std::string> validCaTag;
    static std::set<std::string> validCoTag;
    static std::set<std::string> validKnTag;
    static std::set<std::string> validKfTag;
    static std::set<std::string> validNuTag;
    static std::set<std::string> validHcTag;
    static bool listsInitialized;
    static bool InitializeLists();
    static const char *NUMBER_SYSTEM_KEY;
};
} // namespace I18n
} // namespace Global
} // namespace OHOS
#endif