using System.Text;
using System;

namespace Ropin.Environmentally.LoRaService
{

    public class StringHelper
    {
        /// <summary>
        /// 将字符串转换为16进制字符串
        /// </summary>
        /// <param name="s"></param>
        /// <param name="encode"></param>
        /// <returns></returns>
        public static string StringToHexString(string s, Encoding encode)
        {
            byte[] b = encode.GetBytes(s);//按照指定编码将string编程字节数组
            string result = string.Empty;
            for (int i = 0; i < b.Length; i++)//逐字节变为16进制字符，以%隔开
            {
                result += " " + Convert.ToString(b[i], 16);
            }
            return result.Substring(1, result.Length - 1);
        }

        /// <summary>
        /// 将16进制字符串,转换为字符串
        /// </summary>
        /// <param name="hs"></param>
        /// <param name="encode"></param>
        /// <returns></returns>
        public static string HexStringToString(string hs, Encoding encode)
        {
            //以 分割字符串，并去掉空字符
            string[] chars = hs.Split(' ');
            byte[] b = new byte[chars.Length];
            //逐个字符变为16进制字节数据
            for (int i = 0; i < chars.Length; i++)
            {
                b[i] = Convert.ToByte(chars[i], 16);
            }
            //按照指定编码将字节数组变为字符串
            return encode.GetString(b);
        }

        /// <summary>
        /// 字符串转16进制字节数组
        /// </summary>
        /// <param name="hexString"></param>
        /// <returns></returns>
        public static byte[] StringToHexByte(string hexString)
        {
            hexString = hexString.Replace(" ", "");
            if ((hexString.Length % 2) != 0)
                hexString += " ";
            byte[] returnBytes = new byte[hexString.Length / 2];
            for (int i = 0; i < returnBytes.Length; i++)
                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
            return returnBytes;
        }

        /// <summary>
        /// 字节数组转16进制字符串
        /// </summary>
        /// <param name="bytes"></param>
        /// <returns></returns>
        public static string ByteToHexString(byte[] bytes)
        {
            string returnStr = "";
            if (bytes != null)
            {
                for (int i = 0; i < bytes.Length; i++)
                {
                    returnStr += " " + bytes[i].ToString("X2");
                }
            }
            return returnStr.Substring(1, returnStr.Length - 1);
        }
    }
}