BABA_YAGA/Assets/Editor/AddStickyNoteContextMenu.cs

using UnityEditor;
using UnityEngine;

namespace Editor
{
    public static class AddStickyNoteContextMenu
    {
        [MenuItem("GameObject/Add Sticky Note", false, 10)] // Menu item at top, with priority 10
        private static void AddStickyNote(MenuCommand menuCommand)
        {
            // Ensure a GameObject is selected
            if (Selection.activeGameObject == null)
            {
                Debug.LogWarning("No GameObject selected to add Sticky Note.");
                return;
            }

            GameObject selectedGameObject = Selection.activeGameObject;

            // Check if StickyNote component already exists
            if (selectedGameObject.GetComponent<StickyNote>() != null)
            {
                Debug.LogWarning($"StickyNote component already exists on '{selectedGameObject.name}'.");
                return;
            }

            // Add the StickyNote component
            StickyNote stickyNote = selectedGameObject.AddComponent<StickyNote>();
            Undo.RegisterCreatedObjectUndo(stickyNote, "Add Sticky Note");
            Debug.Log($"StickyNote added to '{selectedGameObject.name}'.");
        }

        // Validate the menu item.
        // It will only be enabled if a GameObject is selected and it doesn't already have a StickyNote component.
        [MenuItem("GameObject/Add Sticky Note", true)]
        private static bool ValidateAddStickyNote()
        {
            if (Selection.activeGameObject == null)
            {
                return false;
            }
            return Selection.activeGameObject.GetComponent<StickyNote>() == null;
        }
    }
}