terra-llm/Assets/CustomGame/Scripts/Editor/FilesCopy.cs

using UnityEditor;
using UnityEngine;

namespace CustomGame.Scripts.Editor
{
    public class FilesCopy : EditorWindow
    {
        private string _fromPath;
        private string _toPath;
        private string _extension = ".cs";
        
        [MenuItem("Tools/Helper/Copy Files")]
        private static void ShowWindow()
        {
            var window = GetWindow<FilesCopy>();
            window.titleContent = new GUIContent("Copy Files");
            window.Show();
        }

        private void OnGUI()
        {
            _fromPath = EditorGUILayout.TextField("From Path", _fromPath);
            _toPath = EditorGUILayout.TextField("To Path", _toPath);
            _extension = EditorGUILayout.TextField("Extension", _extension);
            if (!GUILayout.Button("Copy")) return;
            var files = System.IO.Directory.GetFiles(_fromPath, $"*.{_extension}", System.IO.SearchOption.AllDirectories);
            foreach (var file in files)
            {
                System.IO.File.Copy(file, _toPath + "/" + System.IO.Path.GetFileName(file));
            }
        }
    }
}