using Godot;

namespace Babushka.scripts.CSharp.Low_Code.Variables;

/// <summary>
/// An active getter component for calling the payload value of a <see cref="VariableResource"/>.
/// </summary>
public partial class VariableGetter : Node
{
    /// <summary>
    /// The event resource to listen to.
    /// </summary>
    [Export] private VariableResource _variableResource;

    /// <summary>
    /// A signal that is triggered when the payload of one of the <see cref="VariableResource"/> is called.
    /// </summary>
    [Signal] public delegate void GetPayloadEventHandler(Variant payload);
    
    /// <summary>
    /// Gets the Variant payload of a VariableResource on demand.
    /// </summary>
    /// <returns></returns>
    public Variant Get()
    {
        Variant payload = _variableResource.Payload;
        EmitSignal(SignalName.GetPayload, payload);
        return payload;
    }
}