prs/PRS.Avalonia/PRS.Avalonia/Components/Scanner/ScannerViewModel.cs

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using InABox.Avalonia.Platform.Barcodes;
using Microsoft.Maui.Devices;
using PRS.Avalonia.Modules;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace PRS.Avalonia.Components;

public partial class ScannerViewModel : ModuleViewModel
{
    public override string Title => "Equipment Scanner";

    [ObservableProperty]
    private bool _cameraEnabled;

    [ObservableProperty]
    private bool _processing;

    [ObservableProperty]
    private Func<IReadOnlySet<BarcodeResult>, Task<bool>>? _itemScanned;

    public ScannerViewModel()
    {
    }

    protected override Task OnActivated()
    {
        CameraEnabled = true;
        return base.OnActivated();
    }

    protected override Task OnDeactivated()
    {
        CameraEnabled = false;
        return base.OnDeactivated();
    }

    [RelayCommand]
    private async Task DetectionFinished(IReadOnlySet<BarcodeResult> result)
    {
        if(result.Count > 0)
        {
            if (Processing || !CameraEnabled) return;

            Processing = true;
            if(ItemScanned != null)
            {
                if(await ItemScanned.Invoke(result))
                {
                    CameraEnabled = false;
                }
            }
            Processing = false;
        }
    }
}