using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HslCommunication.Core.Net;
using HslCommunication.Core.IMessage;
using HslCommunication.Core;
using System.Net.Sockets;

namespace HslCommunication.Profinet.OpenProtocol
{
    /// <summary>
    /// 开放以太网协议
    /// </summary>
    public class OpenProtocolNet : NetworkDoubleBase<OpenProtocolMessage, RegularByteTransform>
    {
        #region Constructor

        /// <summary>
        /// 实例化一个默认的对象
        /// </summary>
        public OpenProtocolNet( )
        {

        }

        /// <summary>
        /// 使用指定的IP地址来初始化对象
        /// </summary>
        /// <param name="ipAddress">Ip地址</param>
        /// <param name="port">端口号</param>
        public OpenProtocolNet( string ipAddress, int port )
        {

        }

        #endregion

        #region Override NetworkDoubleBase

        /// <summary>
        /// 连接上服务器后需要进行的初始化操作
        /// </summary>
        /// <param name="socket">网络套接字</param>
        /// <returns>是否初始化成功，依据具体的协议进行重写</returns>
        protected override OperateResult InitializationOnConnect( Socket socket )
        {
            // 此处的 revison 应该等于多少？
            OperateResult<string> open = ReadCustomer( 1, 0, 0, 0, null );
            if (!open.IsSuccess) return open;

            if (open.Content.Substring( 4, 4 ) == "0002")
                return OperateResult.CreateSuccessResult( );
            else
                return new OperateResult( "Failed:" + open.Content.Substring( 4, 4 ) );
        }

        #endregion

        /// <summary>
        /// 自定义的命令读取
        /// </summary>
        /// <param name="mid"></param>
        /// <param name="revison"></param>
        /// <param name="stationId"></param>
        /// <param name="spindleId"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        public OperateResult<string> ReadCustomer( int mid, int revison, int stationId, int spindleId, List<string> parameters )
        {
            if (parameters != null) parameters = new List<string>( );
            OperateResult<byte[]> command = BuildReadCommand( mid, revison, stationId, spindleId, parameters );
            if (!command.IsSuccess) return OperateResult.CreateFailedResult<string>( command );

            OperateResult<byte[]> read = ReadFromCoreServer( command.Content );
            if(!read.IsSuccess) return OperateResult.CreateFailedResult<string>( read );

            return OperateResult.CreateSuccessResult( Encoding.ASCII.GetString( read.Content ) );
        }

        #region Object Override

        /// <summary>
        /// 返回表示当前对象的字符串
        /// </summary>
        /// <returns>字符串信息</returns>
        public override string ToString( )
        {
            return $"OpenProtocolNet[{IpAddress}:{Port}]";
        }

        #endregion

        /// <summary>
        /// 构建一个读取的初始报文
        /// </summary>
        /// <param name="mid"></param>
        /// <param name="revison"></param>
        /// <param name="stationId"></param>
        /// <param name="spindleId"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        public static OperateResult<byte[]> BuildReadCommand( int mid, int revison, int stationId, int spindleId, List<string> parameters )
        {
            if (mid < 0 || mid > 9999) return new OperateResult<byte[]>( "Mid must be between 0 - 9999" );
            if (revison < 0 || revison > 999) return new OperateResult<byte[]>( "revison must be between 0 - 999" );
            if (stationId < 0 || stationId > 9) return new OperateResult<byte[]>( "stationId must be between 0 - 9" );
            if (spindleId < 0 || spindleId > 99) return new OperateResult<byte[]>( "spindleId must be between 0 - 99" );

            int count = 0;
            if (parameters != null)
                parameters.ForEach( m => count += m.Length );

            StringBuilder sb = new StringBuilder( );
            sb.Append( (20 + count).ToString( "D4" ) );
            sb.Append( mid.ToString( "D4" ) );
            sb.Append( revison.ToString( "D3" ) );
            sb.Append( '\0' );
            sb.Append( stationId.ToString( "D1" ) );
            sb.Append( spindleId.ToString( "D2" ) );
            sb.Append( '\0' );
            sb.Append( '\0' );
            sb.Append( '\0' );
            sb.Append( '\0' );
            sb.Append( '\0' );

            if (parameters != null)
                for (int i = 0; i < parameters.Count; i++)
                {
                    sb.Append( parameters[i] );
                }
            sb.Append( '\0' );
            return OperateResult.CreateSuccessResult( Encoding.ASCII.GetBytes( sb.ToString( ) ) );
        }

    }
}