using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.SignalR.Client;
using RobotNet10.RobotApp.Client.Shared.Motion;
using RobotNet10.RobotApp.Client.Shared.Modules;

namespace RobotNet10.RobotApp.Client.Clients;

/// <summary>
/// SignalR client thống nhất để kết nối với MotionHub
/// Bao gồm: ManualControl, Odometry, LiftModule, RotationModule
/// </summary>
public class MotionHubClient : IAsyncDisposable
{
    private readonly HubConnection _hubConnection;
    private bool _disposed;

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

    /// <summary>
    /// Event fired when odometry pose changes
    /// </summary>
    public event Action<OdometryDto>? PoseUpdated;

    /// <summary>
    /// Event fired when connection state changes
    /// </summary>
    public event Action<HubConnectionState>? ConnectionStateChanged;

    public MotionHubClient(NavigationManager navigationManager)
    {
        var hubUrl = navigationManager.ToAbsoluteUri("/hubs/motion");

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

        // Subscribe to pose updates from server
        _hubConnection.On<OdometryDto>("PoseUpdated", dto => PoseUpdated?.Invoke(dto));

        _hubConnection.Reconnecting += async (ex) =>
        {
            ConnectionStateChanged?.Invoke(_hubConnection.State);
            await Task.CompletedTask;
        };

        _hubConnection.Reconnected += async (id) =>
        {
            ConnectionStateChanged?.Invoke(_hubConnection.State);
            await Task.CompletedTask;
        };

        _hubConnection.Closed += async (ex) =>
        {
            ConnectionStateChanged?.Invoke(_hubConnection.State);
            await Task.CompletedTask;
        };
    }

    /// <summary>
    /// Connect to hub
    /// </summary>
    public async Task StartAsync()
    {
        if (_hubConnection.State == HubConnectionState.Disconnected)
        {
            await _hubConnection.StartAsync();
            ConnectionStateChanged?.Invoke(_hubConnection.State);
        }
    }

    /// <summary>
    /// Disconnect from hub
    /// </summary>
    public async Task StopAsync()
    {
        if (_hubConnection.State != HubConnectionState.Disconnected)
        {
            await _hubConnection.StopAsync();
        }
    }

    #region Manual Control

    /// <summary>
    /// Get current status
    /// </summary>
    public async Task<ManualControlStatusDto> GetStatusAsync()
    {
        return await _hubConnection.InvokeAsync<ManualControlStatusDto>("GetStatus");
    }

    /// <summary>
    /// Enable manual control
    /// </summary>
    public async Task EnableAsync()
    {
        await _hubConnection.InvokeAsync("Enable");
    }

    /// <summary>
    /// Disable manual control
    /// </summary>
    public async Task DisableAsync()
    {
        await _hubConnection.InvokeAsync("Disable");
    }

    #endregion

    #region Odometry

    /// <summary>
    /// Get current odometry pose
    /// </summary>
    public async Task<OdometryDto> GetCurrentPoseAsync()
    {
        return await _hubConnection.InvokeAsync<OdometryDto>("GetCurrentPose");
    }

    /// <summary>
    /// Reset odometry to initial position
    /// </summary>
    public async Task ResetOdometryAsync()
    {
        await _hubConnection.InvokeAsync("ResetOdometry");
    }

    /// <summary>
    /// Reset odometry to a specific pose
    /// </summary>
    public async Task ResetOdometryPoseAsync(OdometryDto dto)
    {
        await _hubConnection.InvokeAsync("ResetOdometryPose", dto);
    }

    #endregion

    #region Lift Module

    /// <summary>
    /// Get lift module status
    /// </summary>
    public async Task<LiftModuleStatusDto> GetLiftStatusAsync()
    {
        return await _hubConnection.InvokeAsync<LiftModuleStatusDto>("GetLiftStatus");
    }

    /// <summary>
    /// Get current lift position
    /// </summary>
    public async Task<int> GetLiftCurrentPositionAsync()
    {
        return await _hubConnection.InvokeAsync<int>("GetLiftCurrentPosition");
    }

    /// <summary>
    /// Lift up
    /// </summary>
    public async Task LiftUpAsync()
    {
        await _hubConnection.InvokeAsync("LiftUp");
    }

    /// <summary>
    /// Lift down
    /// </summary>
    public async Task LiftDownAsync()
    {
        await _hubConnection.InvokeAsync("LiftDown");
    }

    /// <summary>
    /// Stop lift movement (when moving up/down)
    /// </summary>
    public async Task LiftStopAsync()
    {
        await _hubConnection.InvokeAsync("LiftStop");
    }

    /// <summary>
    /// Move lift to position
    /// </summary>
    public async Task LiftToPositionAsync(int position)
    {
        await _hubConnection.InvokeAsync("LiftToPosition", position);
    }

    /// <summary>
    /// Check if lift module is homed
    /// </summary>
    public async Task<bool> IsLiftHomedAsync()
    {
        return await _hubConnection.InvokeAsync<bool>("IsLiftHomed");
    }

    /// <summary>
    /// Manual homing for lift module
    /// </summary>
    public async Task LiftHomeAsync()
    {
        await _hubConnection.InvokeAsync("LiftHome");
    }

    #endregion

    #region Rotation Module

    /// <summary>
    /// Get rotation module status
    /// </summary>
    public async Task<RotationModuleStatusDto> GetRotationStatusAsync()
    {
        return await _hubConnection.InvokeAsync<RotationModuleStatusDto>("GetRotationStatus");
    }

    /// <summary>
    /// Get current rotation angle
    /// </summary>
    public async Task<double> GetRotationCurrentAngleAsync()
    {
        return await _hubConnection.InvokeAsync<double>("GetRotationCurrentAngle");
    }

    /// <summary>
    /// Rotate to absolute angle
    /// </summary>
    public async Task RotateToAngleAsync(double angleDegrees)
    {
        await _hubConnection.InvokeAsync("RotateToAngle", angleDegrees);
    }

    /// <summary>
    /// Rotate relative offset
    /// </summary>
    public async Task RotateOffsetAsync(double angleOffsetDegrees)
    {
        await _hubConnection.InvokeAsync("RotateOffset", angleOffsetDegrees);
    }

    /// <summary>
    /// Check if rotation module is homed
    /// </summary>
    public async Task<bool> IsRotationHomedAsync()
    {
        return await _hubConnection.InvokeAsync<bool>("IsRotationHomed");
    }

    #endregion

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

        _disposed = true;

        await StopAsync();
        await _hubConnection.DisposeAsync();
    }
}