using System;
using System.Text;
using NPinyin;

namespace RainOpsMini.Helpers
{
    public static class PinyinHelper
    {
        /// <summary>
        /// 获取字符串的首字母（拼音首字母）
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string GetInitials(string str)
        {
            if (string.IsNullOrEmpty(str)) return "";
            try
            {
                StringBuilder sb = new StringBuilder();
                foreach (char c in str)
                {
                    // If Chinese
                    if (c >= 0x4e00 && c <= 0x9fa5)
                    {
                        var pinyin = Pinyin.GetPinyin(c);
                        if (!string.IsNullOrEmpty(pinyin))
                        {
                            sb.Append(pinyin[0]);
                        }
                        else
                        {
                            sb.Append(c);
                        }
                    }
                    else
                    {
                        sb.Append(c);
                    }
                }
                return sb.ToString();
            }
            catch
            {
                return str; // Fallback
            }
        }

        /// <summary>
        /// 获取全拼
        /// </summary>
        public static string GetPinyin(string str)
        {
             if (string.IsNullOrEmpty(str)) return "";
            try
            {
                return Pinyin.GetPinyin(str).Replace(" ", "");
            }
            catch
            {
                return str;
            }
        }
    }
}