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 扫描模板（扫描后不存数据库，不上传，只返回图片文件信息）
    /// </summary>
    public class biz_scanTemplate
    {
        /// <summary>
        /// 主业务
        /// </summary>
        /// <param name="connId"></param>
        /// <param name="data"></param>
        public async static void Work(IntPtr connId, cmd_scanTemplate data)
        {
            var response = new response_startScanTemplate();

            if (!config_environment.scan_state)
            {
                var result = await work_detail(connId, data);

                if (result.Status == 1)
                {
                    response.code = 200;
                    response.msg = "启动扫描成功";
                }
                else
                {
                    response.code = result.Status;
                    response.msg = result.Message;
                }
            }
            else
            {
                response.code = 509;
                response.msg = "扫描仪正在使用中";
            }

            response.data = data;

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

        /// <summary>
        /// 扫描及构造返回值
        /// </summary>
        /// <param name="connId"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        private async static Task<ResponseEntity> work_detail(IntPtr connId, cmd_scanTemplate data)
        {
            var result = new ResponseEntity();

            try
            {
                //获取当前激活的扫描仪
                var scanner = scanner_manager.get_current();

                if (scanner != null)
                {
                    //设置环境参数
                    config_environment.scan_type2 = ScanType.ScanTemplate;
                    config_environment.scan_type = biz_environment.get_scan_type(0);
                    config_environment.scan_ab = biz_environment.get_ab(data.paperSchema);
                    config_environment.paper_size = biz_environment.get_paper_size(3);                      
                    config_environment.current_invoker = connId;
                    //config_environment.use_source_ui = false;
                    config_environment.use_source_ui = data.useDriveUI == 1;

                    if (data.dpi > 0)
                    {
                        scanner.resolution = data.dpi;
                    }

                    scanner.setPaperSize(config_environment.paper_size);

                    //初始化文件信息，文件名及计数器
                    cmd_startScan2 fake = new cmd_startScan2();
                    fake.batchNumber = data.batchNumber;
                    fake.subjectCode = data.subjectCode;
                    fake.paperSchema = data.paperSchema;
                    fake.isLocalConfig = "0";

                    config_environment.web_parameter = fake;//保存参数本身
                    file_manager.Init(fake);

                    //发送扫描指令
                    result = await engine_twain32.Engine.Scan(scanner);
                }
                else
                {
                    result.Status = 509;
                    result.Message = "未找到指定的扫描仪";
                }
            }
            catch (TwainException te)
            {
                config_environment.scan_state = false;
                LogManager.WriteLog(te);

                result.Message = biz_twainException.get_TwainException_msg(te);

                if (te.ConditionCode.Equals(TwCC.OperationError))
                {
                    result.Status = 501;
                }
                else
                {
                    result.Status = 501;
                }
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(ee);

                result.Status = 509;
                result.Message = ee.Message;
            }
            finally
            {
                //config_environment.scan_state = false;
            }

            return result;
        }
    }
}