using System.Collections.Generic;
using System.IO;
using UnityEditor;
using UnityEngine;

namespace Phantom.XRMOD.XRMODPackageTools.Editor
{
    public class PrefabChangeMonitor : AssetModificationProcessor
    {
        private const string _CONST_TEMP_FOLDER = "AutomaticGenerated/TempAssets";
        private static readonly List<string> _PENDING_PREFABS = new();

        public static string[] OnWillSaveAssets(string[] _paths)
        {
            _PENDING_PREFABS.Clear();
            foreach (var tmp_Path in _paths)
            {
                if (!tmp_Path.EndsWith(".prefab")) continue;
                if (tmp_Path.Contains(_CONST_TEMP_FOLDER)) continue;
                _PENDING_PREFABS.Add(tmp_Path);
            }

            EditorApplication.delayCall += CopyModifyPrefabs;
            return _paths;
        }

        private static void CopyModifyPrefabs()
        {
            for (int tmp_Idx = 0; tmp_Idx < _PENDING_PREFABS.Count; tmp_Idx++)
            {
                var tmp_Path = _PENDING_PREFABS[tmp_Idx];
                var tmp_EditingProject = PackageToolsEditor.ALL_PROJECT_CACHE.GetEditingProjectData();
                if (tmp_EditingProject == null) return;
                var tmp_CurrentProjectPath = tmp_EditingProject.DetailCacheData.GetProjectPath();
                var tmp_FileName = Path.GetFileName(tmp_Path);
                var tmp_DestPath = Path.Combine(tmp_CurrentProjectPath, _CONST_TEMP_FOLDER, tmp_FileName);
                AssetDatabase.CopyAsset(tmp_Path, tmp_DestPath);
            }
            _PENDING_PREFABS.Clear();
        }
    }
}