BQP/srcs/RobotNet10/RobotApp/RobotNet10.RobotApp.Client/Clients/RfHandleHubClient.cs

using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.SignalR.Client;
using RobotNet10.RobotApp.Client.Shared.Devices;

namespace RobotNet10.RobotApp.Client.Clients;

public class RfHandleHubClient : IAsyncDisposable
{
    private readonly HubConnection _hubConnection;
    private bool _disposed;

    public bool IsConnected => _hubConnection.State == HubConnectionState.Connected;
    public HubConnectionState ConnectionState => _hubConnection.State;

    public RfHandleHubClient(NavigationManager navigationManager)
    {
        var hubUrl = navigationManager.ToAbsoluteUri("/hubs/devices/rfhandle");

        _hubConnection = new HubConnectionBuilder()
            .WithUrl(hubUrl)
            .WithAutomaticReconnect()
            .Build();

        _hubConnection.Reconnecting += async (ex) =>
        {
            // optionally notify UI
            await Task.CompletedTask;
        };
        _hubConnection.Reconnected += async (id) =>
        {
            // optionally notify UI
            await Task.CompletedTask;
        };
        _hubConnection.Closed += async (ex) =>
        {
            // optionally notify UI
            await Task.CompletedTask;
        };
    }

    // CONNECT / DISCONNECT
    public async Task StartAsync()
    {
        if (_hubConnection.State == HubConnectionState.Disconnected)
        {
            await _hubConnection.StartAsync();
        }
    }

    public async Task StopAsync()
    {
        if (_hubConnection.State != HubConnectionState.Disconnected)
            await _hubConnection.StopAsync();
    }

    // SERVER CALLS (RPC)
    public async Task<RfHandleDataDto> GetRfHandleDataAsync(string deviceId)
    {
        var result = await _hubConnection.InvokeAsync<RfHandleDataDto?>("GetRfHandleData", deviceId);
        return result ?? new RfHandleDataDto();
    }

    public async Task<DeviceInfoDto?> GetDeviceInfoAsync(string deviceId)
    {
        return await _hubConnection.InvokeAsync<DeviceInfoDto?>("GetDeviceInfo", deviceId);
    }

    // DISPOSE
    public async ValueTask DisposeAsync()
    {
        if (_disposed)
            return;

        _disposed = true;

        try
        {
            // stop but don't throw
            await StopAsync();
            await _hubConnection.DisposeAsync();
        }
        catch { }

        GC.SuppressFinalize(this);
    }
}