shgxtzcjhoudaosaomadayinwpf/RIZO_Application/Modules/RIZO_Application.Modules.ModuleName/ViewModels/PrintControlViewModel.cs

using linesider_screen_tool;
using System.Collections.Generic;
using System;
using Prism.Events;
using Prism.Regions;
using RIZO_Application.Core;
using RIZO_Application.Core.Mvvm;
using RIZO_Helper.Tools;
using RIZO_Application.Infrastructure.Model;

namespace RIZO_Application.Modules.ModuleName.ViewModels
{
    public class PrintControlViewModel : RegionViewModelBase, IDisposable
    {
        private readonly IEventAggregator _eventAggregator;
        private readonly BartenderPrintHelper _printHelper;
        private SubscriptionToken _printEventToken;
        private bool _isDisposed;

        public PrintControlViewModel(
            IRegionManager regionManager,
            IEventAggregator eventAggregator,
            BartenderPrintHelper printHelper)
            : base(regionManager)
        {
            _eventAggregator = eventAggregator;
            _printHelper = printHelper;

            Initialize();
        }

        private void Initialize()
        {
            try
            {
                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印模块初始化开始");

                // 订阅打印事件，使用UI线程处理，保持强引用
                _printEventToken = _eventAggregator.GetEvent<PrintEvent>()
                    .Subscribe(OnPrintRequested, ThreadOption.UIThread, true);

                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印模块初始化完成");
            }
            catch (Exception ex)
            {
                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印模块初始化失败: {ex.Message}");
                throw;
            }
        }

        private void OnPrintRequested(PrintDto printDto)
        {
            // 判断是否是打印主站
            bool isPrintMain = SiteConfigs.Current.IsPrintMain.Value;
            
            if (!isPrintMain)
            {
                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印请求被忽略：此站点非打印主站");
                return;
            }
            string siteNo = SiteConfigs.Current.SiteName;
            if(printDto.SiteNo != siteNo)
            {
                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印请求被忽略：站点号不匹配{printDto.SiteNo}-{siteNo}");
                return;
            }
            if (_isDisposed)
            {
                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印请求被忽略：打印资源已释放");
                return;
            }

            try
            {
                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"收到打印请求: {printDto.Name}");

                // 准备打印参数
                var printParameters = new Dictionary<string, string>
                {
                    { "10", printDto.PartNumber },
                    { "11", "02S" },
                    { "10000", printDto.WorkOrder },
                    { "10002", printDto.Team },
                    { "10003", printDto.Sort.ToString() },
                    { "10004", printDto.BatchCode },
                    { "10005", printDto.Sort.ToString() },
                    { "10006", printDto.BatchCode },
                    { "10007", printDto.PackageNum.ToString() },
                    { "10011", printDto.LabelType.ToString() }
                };

                // 执行打印
                bool printSuccess = _printHelper.PrintLabel(
                    templatePath: printDto.Path,
                    subStringValues: printParameters,
                    copies: 1);

                if (printSuccess)
                {
                    _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印成功: {printDto.Name}");
                }
                else
                {
                    _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印失败: {printDto.Name}");
                }
            }
            catch (Exception ex)
            {
                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印过程中发生错误: {ex.Message}");
            }
        }

        public void Destroy()
        {
            Dispose();
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (_isDisposed)
                return;

            _isDisposed = true;

            if (disposing)
            {
                // 释放托管资源
                _printEventToken?.Dispose();
                _printHelper?.Dispose();
            }
        }

        ~PrintControlViewModel()
        {
            Dispose(false);
        }
    }
}