using Godot;

public partial class ConnectButtonUI : Button {
  [Export] public TextEdit AddressField;
  [Export] public Label ErrorLabel;
  private const string BRACKET_SCENE_PATH = "res://scenes/bracket_view.tscn";

  public override void _Ready() {
    Connection.Instance.OnWsConnectionSuccess += OnConnectionSuccess;
    Connection.Instance.OnWsConnectionFailed += OnConnectionFailed;

    if (Connection.Instance.LastUsedConnectionAddress.Length > 0) {
      AddressField.Text = Connection.Instance.LastUsedConnectionAddress;
    }

    if (Connection.Instance.LastError.Length > 0) {
      ErrorLabel.Text = Connection.Instance.LastError;
    }

    AddressField.GuiInput += e =>
    {
      if (AddressField.HasFocus() && e is InputEventKey inputEventKey && inputEventKey.IsPressed()) {
        if (inputEventKey.KeyLabel == Key.Enter) {
          Connection.Instance.Connect(AddressField.Text);
          GetViewport().SetInputAsHandled();
        }

        if (inputEventKey.KeyLabel == Key.Space) {
          GetViewport().SetInputAsHandled();
        }
      }
    };
  }

  public override void _ExitTree() {
    Connection.Instance.OnWsConnectionSuccess -= OnConnectionSuccess;
    Connection.Instance.OnWsConnectionFailed -= OnConnectionFailed;
  }

  public override void _Pressed() { Connection.Instance.Connect(AddressField.Text); }

  private void OnConnectionSuccess() { GetTree().ChangeSceneToFile(BRACKET_SCENE_PATH); }

  private void OnConnectionFailed() {
    ErrorLabel.Text = "Couldn't connect to server! " + Connection.Instance.LastError;
  }
}