SunlightAggregationTerminal/QueryPage.xaml.cs

using CommunityToolkit.Mvvm.Messaging;
using SunlightAggregationTerminal.Class;
using SunlightAggregationTerminal.Models;
using System.Collections.ObjectModel;
using System.Text.Json;
using TouchSocket.Core;

namespace SunlightAggregationTerminal;

public partial class QueryPage : ContentPage
{
    public static  ObservableCollection<DyelotItem> DyelotItems { get; set; } = new();

    public QueryPage()
    {
        InitializeComponent();

        WeakReferenceMessenger.Default.Register<string>(this, (r, scannedValue) =>            
        {             
            ResultEntry.Text = scannedValue;
            //扫码返回信息
            if (!string.IsNullOrWhiteSpace(scannedValue))
            {
                Dictionary<string, object> QueryDictionary = new Dictionary<string, object>();
                QueryDictionary.Add("Command", "QueryDyelot");
                QueryDictionary.Add("Field", "[Dyelot],[ReDye],[Program],[Color],[CreationTime]," +
                    "[Batch],[OrderNo],[TotalWeight],[LiquidRatio],[TotalVolume],[Final],[UserAccount]," +
                    "[FabricName],[ColorName],[CustomerName],[Notes]");
                QueryDictionary.Add("DyelotName", scannedValue);
                Query_Command(QueryDictionary.ToJsonString());
            }
        });

        Query_data();

        CardCollectionView.ItemsSource = DyelotItems;
    }
    private async void OnScanButtonClicked(object sender, EventArgs e)
    {
        // 跳转到扫码页面
        await Navigation.PushAsync(new ScanPage(0));
    }

    private async void TapGestureRecognizer_Tapped(object sender, TappedEventArgs e)
    {
        if (sender is Microsoft.Maui.Controls.BindableObject bindable)
        {
            var context = bindable.BindingContext;

            if (context is DyelotItem item)
            {
                await Navigation.PushAsync(new QueryDetail(item));
            }
        }
    }

    //信息回复
    public static void Query_data(string dat)
    {
        try
        {
            var data = JsonSerializer.Deserialize<List<DyelotItem>>(dat);

            if (data != null)
            {
                foreach (var item in data)
                {
                    if(item.CreationTime != null) item.CreationTime = item.CreationTime.Replace("T", " ");
                    DyelotItems.Add(item);
                }

                if (data.Count == 0)
                {//如果无信息添加空白行
                    DyelotItems.Add(new DyelotItem { });
                }
            }            
        }
        catch (Exception ex) {
        }
    }

    public async void Query_Command(string dat)
    {
        LoadingIndicator.IsVisible = true;
        DyelotItems.Clear();
                
        DataReceived.Transmit(dat);

        // 创建一个 15 秒的延时任务
        Task delayTask = Task.Delay(15000);
        // 创建一个监测任务，不断检查变量
        Task monitorTask = Task.Run(async () =>
        {
            while (DyelotItems.Count==0)
            {
                // 每隔 100 毫秒检查一次，避免 CPU 占用过高
                await Task.Delay(100);
            }
        });
        // 使用 Task.WhenAny 等待任意一个任务完成
        await Task.WhenAny(delayTask, monitorTask);

        LoadingIndicator.IsVisible = false;
    }

    private void Button_Clicked(object sender, EventArgs e)
    {
        if (ResultEntry.Text != null)
        {
            Dictionary<string, object> QueryDictionary = new Dictionary<string, object>();
            QueryDictionary.Add("Command", "QueryDyelot");
            QueryDictionary.Add("Field", "[Dyelot],[ReDye],[Program],[Color],[CreationTime]," +
                "[Batch],[OrderNo],[TotalWeight],[LiquidRatio],[TotalVolume],[Final],[UserAccount]," +
                "[FabricName],[ColorName],[CustomerName],[Notes]");
            QueryDictionary.Add("DyelotName", ResultEntry.Text);
            Query_Command(QueryDictionary.ToJsonString());
        }
        else
        {
            Query_data();
        }
    }

    private void Query_data()
    {
        Dictionary<string, object> QueryDictionary = new Dictionary<string, object>();
        QueryDictionary.Add("Command", "Query");
        QueryDictionary.Add("Field", "[Dyelot],[ReDye],[Program],[Color],[CreationTime]," +
            "[Batch],[OrderNo],[TotalWeight],[LiquidRatio],[TotalVolume],[Final],[UserAccount]," +
            "[FabricName],[ColorName],[CustomerName],[Notes]");
        QueryDictionary.Add("StartTime", StartTime.Date.ToString()!);
        DateTime EndTime_ = (DateTime)EndTime.Date!;
        QueryDictionary.Add("EndTime", EndTime_.AddDays(1).ToString());
        Query_Command(QueryDictionary.ToJsonString());
    }

    // 处理“回车/完成”按钮点击
    /* private void OnEntryCompleted()
     {
         string inputText = ResultEntry.Text;

         if (!string.IsNullOrWhiteSpace(inputText))
         {
            Dictionary<string, object> QueryDictionary = new Dictionary<string, object>();
            QueryDictionary.Add("Command", "QueryDyelot");
            QueryDictionary.Add("Field", "[Dyelot],[ReDye],[Program],[Color],[CreationTime]," +
                "[Batch],[OrderNo],[TotalWeight],[LiquidRatio],[TotalVolume],[Final],[UserAccount]," +
                "[FabricName],[ColorName],[CustomerName],[Notes]");
            QueryDictionary.Add("DyelotName", inputText);
            Query_Command(QueryDictionary.ToJsonString());
        }
     }*/

}