namespace AcDream.Plugin.Abstractions;

/// <summary>A plugin-safe selection transition matching retail's selected-target callback.</summary>
public readonly record struct SelectionChangedEvent(
    uint? PreviousObjectId,
    uint? SelectedObjectId);

/// <summary>
/// Shared selected-object service. Plugins read and change the same selection
/// used by the world, radar, inventory, paperdoll, and toolbar.
/// </summary>
public interface ISelectionService
{
    uint? SelectedObjectId { get; }
    uint? PreviousObjectId { get; }
    event Action<SelectionChangedEvent> Changed;
    bool Select(uint objectId);
    bool Clear();
}