using System.Threading;
using IndustrialControl.Services;
using IndustrialControl.ViewModels;
namespace IndustrialControl.Pages;
public partial class OutboundMaterialSearchPage : ContentPage
{

    private readonly ScanService _scanSvc;
    private readonly OutboundMaterialSearchViewModel _vm;
    public OutboundMaterialSearchPage(OutboundMaterialSearchViewModel vm, ScanService scanSvc)
    {
        _vm = vm;
        
        BindingContext = vm;
        _scanSvc = scanSvc;
        InitializeComponent();
        // 可选：配置前后缀与防抖
        _scanSvc.Prefix = null;     // 例如 "}q" 之类的前缀；没有就留 null
                                    // _scanSvc.Suffix = "\n";     // 如果设备会附带换行，可去掉；没有就设 null
                                    //_scanSvc.DebounceMs = 250;
        _scanSvc.Suffix = null;   // 先关掉
        _scanSvc.DebounceMs = 0;  // 先关掉
    }
    protected override async void OnAppearing()
    {
        base.OnAppearing();
        // 动态注册广播接收器（只在当前页面前台时生效）
        _scanSvc.Scanned += OnScanned;
        _scanSvc.StartListening();
        //键盘输入
        _scanSvc.Attach(OrderEntry);
        OrderEntry.Focus();
    }

    /// <summary>
    /// 清空扫描记录
    /// </summary>
    void OnClearClicked(object sender, EventArgs e)
    {
        OrderEntry.Text = string.Empty;
        OrderEntry.Focus();
    }

    protected override void OnDisappearing()
    {
        // 退出页面即注销（防止多个程序/页面抢处理）
        _scanSvc.Scanned -= OnScanned;
        _scanSvc.StopListening();

        base.OnDisappearing();
    }

    private void OnScanned(string data, string type)
    {
        MainThread.BeginInvokeOnMainThread(async () =>
        {
            // 常见处理：自动填入单号/条码并触发查询或加入明细
            _vm.SearchOrderNo = data;
        });
    }
    private async void OnOrderSelected(object sender, SelectionChangedEventArgs e)
    {
        var item = e.CurrentSelection?.FirstOrDefault() as InboundOrderSummary;
        if (item is null) return;

        // 二选一：A) 点选跳转到入库页
        await Shell.Current.GoToAsync(
            $"{nameof(OutboundMaterialPage)}?orderNo={Uri.EscapeDataString(item.OrderNo)}");

        // 或 B) 只把单号写到输入框/VM（不跳转）
        // if (BindingContext is InboundMaterialSearchViewModel vm) vm.SearchOrderNo = item.OrderNo;

        ((CollectionView)sender).SelectedItem = null; // 清除选中高亮
    }
}