using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;

using Newtonsoft.Json;
using Saraff.Twain;
using HXX.Scanner.Socket;
using HXX.Scanner.Common;

namespace HXX.Scanner.Biz.Socket
{
    /// <summary>
    /// 业务处理 切换扫描仪
    /// </summary>
    public class biz_changeScan
    {
        /// <summary>
        /// 切换扫描仪引发的界面联动
        /// </summary>
        public static del_change_sanner change_scanner;

        /// <summary>
        /// 主业务
        /// </summary>
        /// <param name="connId"></param>
        /// <param name="data"></param>
        public async static void Work(IntPtr connId, cmd_changeScan data)
        {
            var response = new response_changeScan();

            var result = await work_detail(connId, data);

            if (result.Status == 1)
            {
                response.code = 200;
                response.msg = "成功";
            }
            else
            {
                response.code = 509;
                response.msg = result.Message;
            }

            //SocketServerManager.Send_Family(connId, response.ToJson());
            SocketServerManager.Send_Single(connId, response.ToJson());
        }

        /// <summary>
        /// 切换实施和返回值构造
        /// </summary>
        /// <param name="connId"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        private async static Task<ResponseEntity> work_detail(IntPtr connId, cmd_changeScan data)
        {
            var result = new ResponseEntity();

            try
            {
                if (!config_environment.scan_state)
                {
                    var scanner = scanner_manager.get_scanner(data.param.deviceName);

                    if (scanner != null)
                    {
                        //result = engine_twain32.Engine.set_current(scanner);
                        if (change_scanner != null)
                        {
                            //真实切换扫描仪动作
                            result = await change_scanner(scanner);
                        }
                    }
                    else
                    {
                        result.Status = 509;
                        result.Message = "未找到指定的扫描仪";
                    }
                }
                else
                {
                    result.Status = 509;
                    result.Message = "扫描仪正在使用中";
                }
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(ee);

                result.Status = 509;
                result.Message = ee.Message;
            }

            return result;
        }
    }
}