using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Sog.Lang
{
    public static class LanguageUtils
    {
        public const string DEFAULT_LANGUAGE = "en";

        //尝试获取多语言字符串
        public static string GetLanguageString(string content, string lang)
        {
            if(string.IsNullOrEmpty(content))
            {
                return content;
            }

            if(content.Length < 1)
            {
                return content;
            }

            //#开头的字符串表示是配置在多语言文件里的
            if(content[0] == '#')
            {
                string lang_key = content.Substring(1);
                LanguageDesc desc = LanguageDescMgr.Instance.GetConfig(lang_key);
                if(desc == null)
                {
                    return content;
                }

                string result = null;
                if(lang == "en")
                {
                    result = desc.EN;
                }
                else if(lang == "zh")
                {
                    result = desc.ZH;
                }
                else
                {
                    result = desc.EN;
                }

                return result;
            }
            else
            {
                return content;
            }
        }

        /// <summary>
        /// 根据客户端android，ios的语言转化成游戏里的语言标准配置字符（tk,en,zh,配表）,
        /// </summary>
        /// <param name="language"></param>
        /// <returns></returns>
        public static string GetLangByClientOsLanguage(string language)
        {
            if(string.IsNullOrEmpty(language))
            {
                return DEFAULT_LANGUAGE;
            }

            string lower_language = language.ToLower();

            var descList = LanguageAbbrCfgDescMgr.Instance.ItemTable;
            foreach (var one in descList.Values)
            {
                if (lower_language == one.lang_abbr)
                {
                    return one.lang_abbr;
                }
            }
            return DEFAULT_LANGUAGE;
        } 
    }
}