using System.Collections.Generic;
using System.Globalization;
using UnityEngine;

public class Boostrapi18n
{
    private static Boostrapi18n _Instance;
    private Dictionary<string, string[]> textDic;
    int currentIndex = 2; //default en
    public Boostrapi18n()
    {
        textDic = ReadFromCsv();
    }
    public static Boostrapi18n Instance
    {
        get
        {
            if (_Instance == null)
            {
                _Instance = new Boostrapi18n();
                _Instance.Init();
            }
            return _Instance;
        }
    }

    private void Init()
    {
        textDic = ReadFromCsv();
    }

    private Dictionary<string, string[]> ReadFromCsv()
    {
        //read tsv
        var tsv = BetterStreamingAssets.ReadAllText("boostrapi18n.tsv");
        textDic = new Dictionary<string, string[]>();
        var lines = tsv.Split('\n');
        if (lines.Length < 2) return textDic;
        var header = lines[0];
        var headers = header.Split('\t');
        if (headers.Length < 2) return textDic;

        string Language = "en";


        if (!PlayerPrefs.HasKey("Lang"))
        {
            CultureInfo info = System.Globalization.CultureInfo.CurrentUICulture;
            Language = info.TwoLetterISOLanguageName;
            if (Language == "zh")
            {
                if (info.DisplayName.Contains("Simplified"))
                {
                    Language = "zh_Hans";
                }
                else
                {
                    Language = "zh_Hant";
                }
            }
        }
        else
        {
            Language = PlayerPrefs.GetString("Lang");
        }

        for (int i = 1; i < headers.Length; i++)
        {
            //把value[1]里面的"\n","\r","\r\n"替换为""
            string v = headers[i].Replace("\n", "").Replace("\r", "").Replace("\r\n", "");
            if (v == "text_" + Language)
            {
                currentIndex = i - 1;
                break;
            }
        }
        for (int i1 = 1; i1 < lines.Length; i1++)
        {
            string line = lines[i1];
            var values = line.Split('\t');
            if (values.Length < 2) continue;
            var key = values[0];
            string[] value = new string[values.Length - 1];
            for (int i = 1; i < values.Length; i++)
            {
                //把value[1]里面的"\n","\r","\r\n"替换为""
                string v = values[i].Replace("\n", "").Replace("\r", "").Replace("\r\n", "").Replace("\\r\\n", "\r\n");
                value[i - 1] = v;
                //value[i - 1] = values[i];
            }
            textDic.TryAdd(key, value);
        }
        return textDic;
    }

    public string GetText(string key)
    {
        if (!textDic.ContainsKey(key))
        {
            return string.Empty;
        }

        return textDic[key][currentIndex];
    }
}