using Microsoft.International.Converters.PinYinConverter;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Hncore.Pass.BaseInfo.Common
{
    public class PinYinHelper
    {
        /*
         两种方法共用：//优先使用NPinyin,转换失败则用 Pinyinconverter
         NPinyin 错误集：洺(不识别)
         Pinyinconverter 多音字错误集：广a，区o，强j。都是多音字
         */
        /// <summary>
        /// 汉字转全拼
        /// </summary>
        /// <param name="strChinese"></param>
        /// <returns></returns>
        public static string ConvertToAllSpell(string strChinese)
        {
            try
            {
                if (strChinese.Length != 0)
                {
                    StringBuilder fullSpell = new StringBuilder();
                    for (int i = 0; i < strChinese.Length; i++)
                    {
                        var chr = strChinese[i];
                        fullSpell.Append(GetSpell(chr));
                    }

                    return fullSpell.ToString().ToUpper();
                }
            }
            catch
            {
                return string.Empty;
            }
            return string.Empty;
        }

        /// <summary>
        /// 汉字转首字母
        /// </summary>
        /// <param name="strChinese"></param>
        /// <returns></returns>
        public static string GetFirstSpell(string strChinese)
        {
            //NPinyin.Pinyin.GetInitials(strChinese)  有Bug  洺无法识别
            //return NPinyin.Pinyin.GetInitials(strChinese);

            try
            {
                if (strChinese.Length != 0)
                {
                    StringBuilder fullSpell = new StringBuilder();
                    for (int i = 0; i < strChinese.Length; i++)
                    {
                        var chr = strChinese[i];
                        fullSpell.Append(GetSpell(chr)[0]);
                    }

                    return fullSpell.ToString().ToUpper();
                }
            }
            catch (Exception e)
            {
                return string.Empty;
            }
            return string.Empty;
        }

        /// <summary>
        /// 汉字转拼音
        /// </summary>
        /// <param name="chr"></param>
        /// <returns></returns>
        private static string GetSpell(char chr)
        {
            var coverchr = NPinyin.Pinyin.GetPinyin(chr);
            //优先使用NPinyin,转换失败则用 Pinyinconverter
            bool isChineses = ChineseChar.IsValidChar(coverchr[0]);
            if (isChineses)
            {
                ChineseChar chineseChar = new ChineseChar(coverchr[0]);
                foreach (string value in chineseChar.Pinyins)
                {
                    if (!string.IsNullOrEmpty(value))
                    {
                        return value.Remove(value.Length - 1, 1);
                    }
                }
            }
            return coverchr;
        }
    }
}