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using Microsoft.AspNetCore.Components;
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using Microsoft.AspNetCore.SignalR.Client;
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using RobotNet10.RobotApp.Client.Shared.Devices;
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namespace RobotNet10.RobotApp.Client.Services;
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/// <summary>
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/// SignalR client để kết nối với DeviceHub
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/// </summary>
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public class DeviceHubClient : IAsyncDisposable
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{
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private readonly HubConnection _hubConnection;
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private bool _disposed;
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public event Action<DeviceUpdateDto>? DeviceUpdated;
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public event Action<string, DeviceStatus>? DeviceStatusChanged;
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public event Action<HubConnectionState>? ConnectionStateChanged;
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public bool IsConnected => _hubConnection.State == HubConnectionState.Connected;
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public HubConnectionState ConnectionState => _hubConnection.State;
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public DeviceHubClient(NavigationManager navigationManager)
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{
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var hubUrl = navigationManager.ToAbsoluteUri("/hubs/devices");
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_hubConnection = new HubConnectionBuilder()
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.WithUrl(hubUrl)
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.WithAutomaticReconnect()
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.Build();
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_hubConnection.On<DeviceUpdateDto>("DeviceUpdated", update => DeviceUpdated?.Invoke(update));
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_hubConnection.On<string, DeviceStatus>("DeviceStatusChanged", (deviceId, status) =>
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DeviceStatusChanged?.Invoke(deviceId, status));
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_hubConnection.Reconnecting += error =>
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{
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ConnectionStateChanged?.Invoke(_hubConnection.State);
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return Task.CompletedTask;
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};
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_hubConnection.Reconnected += connectionId =>
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{
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ConnectionStateChanged?.Invoke(_hubConnection.State);
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return Task.CompletedTask;
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};
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_hubConnection.Closed += error =>
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{
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ConnectionStateChanged?.Invoke(_hubConnection.State);
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return Task.CompletedTask;
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};
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}
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public async Task StartAsync()
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{
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if (_hubConnection.State == HubConnectionState.Disconnected)
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{
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await _hubConnection.StartAsync();
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ConnectionStateChanged?.Invoke(_hubConnection.State);
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}
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}
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public async Task StopAsync()
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{
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if (_hubConnection.State != HubConnectionState.Disconnected)
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{
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await _hubConnection.StopAsync();
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ConnectionStateChanged?.Invoke(_hubConnection.State);
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}
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}
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public async Task<DeviceDto[]> GetAllDevicesAsync()
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{
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return await _hubConnection.InvokeAsync<DeviceDto[]>("GetAllDevices");
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}
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public async Task<DeviceDto?> GetDeviceAsync(string deviceId)
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{
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return await _hubConnection.InvokeAsync<DeviceDto?>("GetDevice", deviceId);
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}
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public async Task<DeviceDto[]> GetDevicesByTypeAsync(DeviceType deviceType)
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{
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return await _hubConnection.InvokeAsync<DeviceDto[]>("GetDevicesByType", deviceType);
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}
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public async Task<int> GetDeviceCountAsync()
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{
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return await _hubConnection.InvokeAsync<int>("GetDeviceCount");
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}
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public async ValueTask DisposeAsync()
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{
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if (_disposed)
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return;
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_disposed = true;
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await StopAsync();
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await _hubConnection.DisposeAsync();
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GC.SuppressFinalize(this);
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}
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}
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