using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using PLCIOPointTool.Services;

namespace PLCIOPointTool.ViewModels;

public partial class StatusBarViewModel : ObservableObject, IDisposable
{
    private readonly ICommunicator _communicator;

    private bool disposedValue;

    [ObservableProperty]
    private string _netID;

    [ObservableProperty]
    private int _port;

    [ObservableProperty]
    private bool _isInputEnable;

    [ObservableProperty]
    private string _buttonContent;

    [ObservableProperty]
    [NotifyCanExecuteChangedFor(nameof(ConnectOrDisconnectCommand))]
    private bool _isNotInOperating;

    [ObservableProperty]
    private string _status;

    public StatusBarViewModel(ICommunicator communicator)
    {
        _netID = string.Empty;
        _port = 531;
        _isInputEnable = true;
        _buttonContent = "Connect";
        _isNotInOperating = true;
        _status = "Disconnected";

        _communicator = communicator;
        _communicator.ConnectionStatusChanged += OnConnectionStatusChanged;
    }

    [RelayCommand(CanExecute = nameof(IsNotInOperating))]
    private void ConnectOrDisconnect()
    {
        IsNotInOperating = false;
        Task.Run(() =>
        {
            switch (ButtonContent)
            {
                case "Connect":
                    _communicator.Open(NetID, Port);
                    break;
                case "DisConnect":
                    _communicator.Close();
                    break;
                default:
                    break;
            }
            App.Current.Dispatcher.BeginInvoke(() =>
            {
                IsNotInOperating = true;
            });
        });
    }

    private void OnConnectionStatusChanged(object? sender, bool e)
    {
        App.Current.Dispatcher.Invoke(() =>
        {
            ButtonContent = e ? "Disconnect" : "Connect";
            IsInputEnable = !e;
            Status = e ? "Connected" : "Disconnected";
        });
    }

    protected virtual void Dispose(bool disposing)
    {
        if (!disposedValue)
        {
            if (disposing)
            {
                // TODO: dispose managed state (managed objects)
                _communicator.ConnectionStatusChanged -= OnConnectionStatusChanged;
            }

            // TODO: free unmanaged resources (unmanaged objects) and override finalizer
            // TODO: set large fields to null
            disposedValue = true;
        }
    }

    // // TODO: override finalizer only if 'Dispose(bool disposing)' has code to free unmanaged resources
    // ~StatusBarViewModel()
    // {
    //     // Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
    //     Dispose(disposing: false);
    // }

    public void Dispose()
    {
        // Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
        Dispose(disposing: true);
        GC.SuppressFinalize(this);
    }
}