AdminPanel/NetinaShop.AdminPanel.PWA/Utilities/Models/CustomEventInterop.cs

namespace NetinaShop.AdminPanel.PWA.Utilities.Models;
    public class CustomEventHelper
    {
        private readonly Func<EventArgs, Task> _callback;

        public CustomEventHelper(Func<EventArgs, Task> callback)
        {
            _callback = callback;
        }

        [JSInvokable]
        public Task OnCustomEvent(EventArgs args) => _callback(args);
    }

    public class CustomEventInterop : IDisposable
    {
        private readonly IJSRuntime _jsRuntime;
        private DotNetObjectReference<CustomEventHelper> Reference;

        public CustomEventInterop(IJSRuntime jsRuntime)
        {
            _jsRuntime = jsRuntime;
        }

        public ValueTask<string> SetupCustomEventCallback(Func<EventArgs, Task> callback)
        {
            Reference = DotNetObjectReference.Create(new CustomEventHelper(callback));
            // addCustomEventListener will be a js function we create later
            return _jsRuntime.InvokeAsync<string>("addCustomEventListener", Reference);
        }

        public void Dispose()
        {
            Reference?.Dispose();
        }
    }