SlnMesnac.LabelPrint/SlnMesnac.LabelPrint.Timer/PrintTimer.cs

using SlnMesnac.LabelPrint.BarTender;
using SlnMesnac.LabelPrint.Common;
using SlnMesnac.LabelPrint.Log4net;
using SlnMesnac.LabelPrint.TaskQueue;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace SlnMesnac.LabelPrint.Timer
{
    public class PrintTimer
    {
        private readonly LogHelper logHelper = LogHelper.Instance;
        private readonly TaskHelper taskHelper = TaskHelper.Instance;
        private readonly PrintManager printManager = PrintManager.Instance;
        private readonly JsonChange jsonChange = JsonChange.Instance;

        private System.Timers.Timer timer = new System.Timers.Timer(2000);

        /// <summary>
        /// 日志刷新
        /// </summary>
        /// <param name="massage"></param>
        public delegate void LogRefresh(string massage);
        public event LogRefresh LogRefreshEvent;

        #region 单例实现
        private static readonly Lazy<PrintTimer> lazy = new Lazy<PrintTimer>(() => new PrintTimer());

        public static PrintTimer Instance
        {
            get
            {
                return lazy.Value;
            }
        }
        #endregion

        private PrintTimer() { }

        /// <summary>
        /// 开启自动打印
        /// </summary>
        /// <returns></returns>
        public bool StartPrint()
        {
            bool result = false;

            try
            {
                if (!timer.Enabled)
                {
                    timer.Elapsed += new System.Timers.ElapsedEventHandler(ReadRfidByTimer);
                    timer.AutoReset = true;
                    timer.Enabled = false;
                    timer.Start();
                    this.PrintMessageToListBox("开启定时任务自动执行标签打印");
                }
                result = true;
            }catch(Exception ex)
            {
                logHelper.Error("自动打印定时任务启动异常", ex);
                this.PrintMessageToListBox($"自动打印定时任务启动异常:{ex.Message}");
            }
            return result;
        }

        private void ReadRfidByTimer(object source, System.Timers.ElapsedEventArgs e)
        {
            try
            {
                var info = taskHelper.GetTask();
                if (info == null)
                {
                    this.PrintMessageToListBox("未获取到需要打印的任务");
                }
                else
                {
                    this.PrintMessageToListBox($"开始打印标签信息：{jsonChange.ModeToJson(info)}");
                    Thread.Sleep(200);
                    if (info.column_A == null)
                    {
                        this.PrintMessageToListBox($"{info.productType}打印任务执行失败，A列数据为空");
                        return;
                    }
                    var printResult = printManager.Print(info);
                    if (printResult)
                    {
                        this.PrintMessageToListBox($"{info.productType}打印{info.column_A.ToString()}；打印成功");
                    }
                    else
                    {
                        this.PrintMessageToListBox($"{info.column_A.ToString()}；打印失败");
                    }

                    taskHelper.RemoveTask(info);
                }
            }catch(Exception ex)
            {
                logHelper.Error("自动打印任务执行异常", ex);
                this.PrintMessageToListBox($"自动打印任务执行异常:{ex.Message}");
            }
        }

        /// <summary>
        /// 停止自动打印
        /// </summary>
        /// <returns></returns>
        public bool StopPrint()
        {
            bool result = false;

            try
            {
                this.PrintMessageToListBox("停止自动打印，并释放定时任务");
                if (timer.Enabled)
                {
                    timer.Stop();
                    timer.Close();
                    timer.Dispose();
                    timer = new System.Timers.Timer(2000);
                }
                result = true;
            }
            catch (Exception ex)
            {
                logHelper.Error("自动打印定时任务停止异常", ex);
                this.PrintMessageToListBox($"自动打印定时任务停止异常:{ex.Message}");
            }
            return result;
        }

        /// <summary>
        /// 日志打印
        /// </summary>
        /// <param name="message"></param>
        private void PrintMessageToListBox(string message)
        {
            LogRefreshEvent?.Invoke(message);
        }
    }
}