#region << 版 本 注 释 >>

/*--------------------------------------------------------------------
* 版权所有 (c) 2025 WenJY 保留所有权利。
* CLR版本：4.0.30319.42000
* 机器名称：Mr.Wen's MacBook Pro
* 命名空间：Sln.Iot.Socket.Adapter
* 唯一标识：50003A25-42CE-44A7-9940-FFDE3BD0A52A
*
* 创建者：WenJY
* 电子邮箱：
* 创建时间：2025-04-11 13:56:24
* 版本：V1.0.0
* 描述：
*
*--------------------------------------------------------------------
* 修改人：
* 时间：
* 修改说明：
*
* 版本：V1.0.0
*--------------------------------------------------------------------*/

#endregion << 版 本 注 释 >>

using System;
using System.Text;
using TouchSocket.Core;

namespace Sln.Iot.Socket.Adapter
{
    public class CustomDataHandlingAdapter:CustomDataHandlingAdapter<BufferRequestInfo>
    {
        protected override FilterResult Filter(in ByteBlock byteBlock, bool beCached, ref BufferRequestInfo request, ref int tempCapacity)
        {
            CacheTimeoutEnable = true;
            CacheTimeout = new TimeSpan(0, 0, 0, 0, 5000);
            int pos = byteBlock.Pos;
            try
            {
                if (byteBlock.CanReadLen < 5)
                {
                    return FilterResult.Cache;
                }

                byteBlock.Read(out byte[] header, 1);

                byteBlock.Read(out byte[] deviceType, 1);

                byteBlock.Read(out byte[] deviceId, 2);

                string DeviceType = Encoding.ASCII.GetString(deviceType);
                string collectEquipCode = DeviceType + this.ConverToString(deviceId);

                byteBlock.Pos += 1;

                byteBlock.Read(out byte[] dataType, 1);

                // byteBlock.Read(out byte[] lengthByte, 2);
                //
                // string hexString = BitConverter.ToString(lengthByte).Replace("-", "");
                // int bodyLength = Convert.ToInt32(hexString, 16);

                GetBodyLength(dataType[0], out int bodyLength);
                
                if (bodyLength > byteBlock.CanReadLen)
                {
                    byteBlock.Pos = pos; //body数据不足。回退游标
                    return FilterResult.Cache;
                }
                else
                {
                    byteBlock.Read(out byte[] body, bodyLength);
                    byteBlock.Read(out byte[] check, 1);
                    byteBlock.Read(out byte[] tail, 1);

                    request = new BufferRequestInfo()
                    {
                        header = header,
                        ColletEquipCode = collectEquipCode,
                        DataType = dataType[0],
                        BufferLength = bodyLength,
                        Body = body,
                        CheckBit = check[0],
                        Tail = tail,
                        buffer = byteBlock,
                    };

                    return FilterResult.Success;
                }
            }catch (Exception ex)
            {
                Logger.Error("FilterResult"+ex.Message);
                byteBlock.Pos = pos; //body数据不足。回退游标
                return FilterResult.Cache;
            }

        }
        
        private string ConverToString(byte[] data)
        {
            string str;
            StringBuilder stb = new StringBuilder();
            for (int i = 0; i < data.Length; i++)
            {
                if ((int)data[i] > 15)
                {
                    stb.Append(Convert.ToString(data[i], 16).ToUpper()); //添加字符串
                }
                else  //如果是小于0F需要加个零
                {
                    stb.Append("0" + Convert.ToString(data[i], 16).ToUpper());
                }
            }
            str = stb.ToString();
            return str;
        }
        
        public string bytesToHexStr(byte[] bytes, int iLen)
        {
            StringBuilder sb = new StringBuilder();
            if (bytes != null)
            {
                for (int i = 0; i < iLen; i++)
                {
                    sb.Append(bytes[i].ToString("X2"));
                }
            }
            return sb.ToString();
        }

        /// <summary>
        /// 数据长度，只计算数据区域长度，控制码向后到校验位，不包含校验
        /// </summary>
        /// <param name="dataType"></param>
        /// <param name="length"></param>
        private void GetBodyLength(byte dataType, out int length)
        {
            switch (dataType)
            {
                case 0x33:
                    length = 4;
                    break;
                case 0x36:
                    length = 1;
                    break;
                case 0x34:
                    length = 26;
                    break;
                case 0x35:
                    length = 4;
                    break;
                case 0x37:
                    length = 5;
                    break;
                default:
                    length = 1;
                    break;
            }
        }
    }
}