using System;
using System.Text;
using System.Text.RegularExpressions;
using UnityEngine;

namespace GFGGame
{
    public class StringUtil
    {
        private static int[] secPosValue = { 1601, 1637, 1833, 2078, 2274, 2302, 2433, 2594, 2787, 3106, 3212, 3472, 3635, 3722, 3730, 3858, 4327, 4086, 4390, 4558, 4684, 4925, 5249, 9999 };
        private static char[] firstLetter = { 'a',  'b',  'c',  'd',  'e',  'f',  'g',  'h',  'j',  'k',  't',  'm',  'n',  'o',  'p',  'q',  'r',  's',  't',  'w',  'x',  'y',  'z' };


        /// <summary>
        /// 设置指定文本的颜色
        /// </summary>
        /// <param name="fmt"></param>
        /// <param name="color"></param>
        /// <returns></returns>
        public static string GetColorText(string fmt, string color)
        {
            string str = string.Format("[color={0}]{1}[/color]", color, fmt);
            return str;
        }


        public static char GetPinYin(string str)
        {
            if (Convert.ToChar(str[0]) >= 0 && Convert.ToChar(str[0]) < 256)
                return str[0];
            else
                return GetFirstLetter(str[0].ToString());
        }

        //根据汉字拼音排序得到首字母 
        private static char GetFirstLetter(string str)
        {
            string posValue = StringToPos(str);
            for (int i = 0; i < secPosValue.Length - 1; i++)
            {
                if (int.Parse(posValue) >= secPosValue[i] && int.Parse(posValue) < secPosValue[i + 1])
                {
                    return firstLetter[i];
                }
            }
            return 'z';
        }
        //获取一个字符的区位码
        private static string StringToPos(string value)
        {


            string posValue = string.Empty;

            byte[] bytes = System.Text.Encoding.GetEncoding("GB2312").GetBytes(value);
            string lowCode = (bytes[0] - 160).ToString(); //取出低字节编码内容（两位16进制）
            if (lowCode.Length == 1)
                lowCode = "0" + lowCode;

            string hightCode = (bytes[1] - 160).ToString();//取出高字节编码内容（两位16进制）
            if (hightCode.Length == 1)
                hightCode = "0" + hightCode;

            posValue += (lowCode + hightCode);//加入到字符串中,

            return posValue;

        }

        /// <summary>
        /// 获取下载地址的文件名, 包含后缀
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public static string GetUrlFileName(string url)
        {
            try
            {
                // 创建一个 Uri 对象
                Uri uri = new Uri(url);

                // 获取 URL 的路径部分
                string path = uri.AbsolutePath;

                // 从路径中提取文件名
                string fileName = System.IO.Path.GetFileName(path);

                // // 获取不包含扩展名的文件名
                // string fileNameWithoutExtension = System.IO.Path.GetFileNameWithoutExtension(fileName);
                return fileName;
            }
            catch
            {
                //增加容错
                return url;
            }
        }
    }
}