using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace inspector.ext
{
    public static class StringExtensions
    {
        public static string WithoutFileName(this string str)
        {
            return WithoutLastFolder(str);
        }

        public static string WithoutLastFolder(this string str)
        {
            return str.Substring(0, str.LastIndexOf("/") + 1);
        }

        public static FolderInfo ToFolderInfo(this string str)
        {
            return JsonUtility.FromJson<FolderInfo>(str);
        }

        /// <summary>
        /// Remember that the folder must be located in Resources.
        /// </summary>
        public static T[] LoadFolder<T>(this string str) where T : Object
        {
            string resourcesFolder = "Resources/";

            FolderInfo folder = str.ToFolderInfo();

            if (folder.path.IndexOf(resourcesFolder) == -1) // Ensure the path is in Resources.
            {
                Debug.LogError("The folder at path " + folder.path + " must be located in Resources if you want to load it.");
                return null;
            }

            // We remove the part of the path that is before Resources
            folder.path = folder.path.Substring(folder.path.LastIndexOf(resourcesFolder) + resourcesFolder.Length);

            T[] resources = Resources.LoadAll<T>(folder.path);

            if (resources == null || resources.Length == 0) // Maybe the folder was renamed or deleted?
            {
                FolderInfo folderInfo = Utils.GetFolderWithGUID(folder.guid);

                if (folderInfo != null) // Indeed, we found it in the file changes!
                {
                    folder.path = folderInfo.path; // Update with new path
                    folder.path = folder.path.Substring(folder.path.LastIndexOf(resourcesFolder) + resourcesFolder.Length);
                    resources = Resources.LoadAll<T>(folder.path);
                }
            }

            return resources;
        }
    }
}