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

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

namespace RobotNet10.RobotApp.Client.Clients;

/// <summary>
/// SignalR client để kết nối với BatteryHub
/// </summary>
public class BatteryHubClient : IAsyncDisposable
{
    private readonly HubConnection _hubConnection;
    private bool _disposed;

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

    public BatteryHubClient(NavigationManager navigationManager)
    {
        var hubUrl = navigationManager.ToAbsoluteUri("/hubs/devices/battery");
        _hubConnection = new HubConnectionBuilder()
            .WithUrl(hubUrl)
            .WithAutomaticReconnect()
            .Build();

        _hubConnection.Reconnecting += error =>
        {
            return Task.CompletedTask;
        };

        _hubConnection.Reconnected += connectionId =>
        {
            return Task.CompletedTask;
        };

        _hubConnection.Closed += error =>
        {
            return Task.CompletedTask;
        };
    }

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

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

    public async Task<BatteryState> GetBatteryDataAsync(string deviceId)
    {
        var result = await _hubConnection.InvokeAsync<BatteryState?>("GetBatteryData", deviceId);
        return result ?? new BatteryState();
    }

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

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

        _disposed = true;
        await StopAsync();
        await _hubConnection.DisposeAsync();
        GC.SuppressFinalize(this);
    }
}