using UnityEngine;
using UnityEditor;
using System;

public class UpdateSkinnedMeshWindow : EditorWindow
{
    [MenuItem("Window/Update Skinned Mesh Bones")]
    public static void OpenWindow()
    {
        var window = GetWindow<UpdateSkinnedMeshWindow>();
        window.titleContent = new GUIContent("Skin Updater");
    }

    private SkinnedMeshRenderer targetSkin;
    private SkinnedMeshRenderer sourceSkin;

    private void OnGUI()
    {
        sourceSkin = EditorGUILayout.ObjectField("Main Body", sourceSkin, typeof(SkinnedMeshRenderer), true) as SkinnedMeshRenderer;
        targetSkin = EditorGUILayout.ObjectField("Accessory", targetSkin, typeof(SkinnedMeshRenderer), true) as SkinnedMeshRenderer;
        

        GUI.enabled = (targetSkin != null && sourceSkin != null);

        if (targetSkin != null && sourceSkin != null)
        {

            if (GUILayout.Button("Update Skinned Mesh Renderer"))
            {
                Transform rootBone = sourceSkin.rootBone;
                Transform[] newBones = new Transform[targetSkin.bones.Length];

                for (int i = 0; i < targetSkin.bones.Length; i++)
                {
                    foreach (var newBone in rootBone.GetComponentsInChildren<Transform>())
                    {
                        if (newBone.name == targetSkin.bones[i].name)
                        {
                            newBones[i] = newBone;
                            continue;
                        }
                    }
                }

                targetSkin.bones = newBones;
                targetSkin.rootBone = rootBone;
                targetSkin.probeAnchor = rootBone;
                targetSkin.transform.SetParent(rootBone.root);
                targetSkin.localBounds = sourceSkin.localBounds;
            }

            
        }
    }
}