聊一聊 MES系统如何实现多种标签打印并支持不同打印机

using ax_mes_print.Model;

namespace ax_mes_print.Service;

public class CartonPrintService : IPrintService
{
    private readonly HttpHelper _httpHelper;
    private readonly ILogger<CartonPrintService> _logger;
    private readonly BartenderLabelHelper _bartenderLabelHelper;
    private const string folderName = "Carton";

    public CartonPrintService(HttpHelper httpHelper, ILogger<CartonPrintService> logger, BartenderLabelHelper bartenderLabelHelper)
    {
        _httpHelper = httpHelper;
        _logger = logger;
        _bartenderLabelHelper = bartenderLabelHelper;
    }

    public async Task<PrintResponse> ExecutePrintAsync(string printParameter)
    {
        var requestParameter = DeserializePrintRequest(printParameter);

        if (requestParameter == null)
        {
            return PrintResponse.Error("打印参数有误！");
        }
 

        if (string.IsNullOrWhiteSpace(requestParameter.CartonSN))
        {
            return PrintResponse.Error("卡通箱号不能为空！");
        }

        var LabelTemplateInfoList = await QueryLabelTemplateInfoAsync(requestParameter.ProductCode);

        if (LabelTemplateInfoList.Count == 0)
        {
            return PrintResponse.Error("未找卡通模板文件,请先上传！");
        }

        var cartonDataData = await QueryCartonDataAsync(requestParameter.CartonSN);

        if (cartonDataData == null || cartonDataData.Item2.Length == 0)
        {
            return PrintResponse.Error("未找到卡通数据,打印失败！");
        }

        var directory = FileHelper.CreateOrDeleteFolder(folderName);


        foreach (var item in LabelTemplateInfoList)
        {
            await _httpHelper.DownloadFileAsync(item.AccessUrl, folderName, item.FileName);

            var printReuslt = _bartenderLabelHelper.BartenderPrint(SetPrintName(requestParameter.PrintName), Path.Combine(directory, item.FileName), cartonDataData.Item1, cartonDataData.Item2);
            if (printReuslt != string.Empty)
            {
                return PrintResponse.Error(printReuslt);
            }
        }

        return PrintResponse.Success("打印命令发送成功,请查看打印机！");
    }

    private CartonPrintWebSocketRequest? DeserializePrintRequest(string printParameter)
    {
        if (string.IsNullOrWhiteSpace(printParameter))
        {
            return null;
        }

        var request = JsonConvert.DeserializeObject<CartonPrintWebSocketRequest>(printParameter);

        if (request is null)
        {
            return null;
        }

        return request;

    }

    private async Task<CartonDataData> QueryCartonDataAsync(string cartonSN)
    {
        var queryCartonDataResponse = null;

        return queryCartonDataResponse.Data;
    }

    private async Task<List<LabelTemplateInfo>> QueryLabelTemplateInfoAsync(string productCode)
    {
        var queryLabelTemplateInfoResponse = null;

        return queryLabelTemplateInfoResponse.Data;
    }

    
}