/******************************************************************************
 * Copyright (C) Ultraleap, Inc. 2011-2021.                                   *
 *                                                                            *
 * Use subject to the terms of the Apache License 2.0 available at            *
 * http://www.apache.org/licenses/LICENSE-2.0, or another agreement           *
 * between Ultraleap and you, your company or other organization.             *
 ******************************************************************************/

using System;
using System.IO;
using UnityEditor;
using UnityEngine;

namespace Leap.Unity
{

    [CustomPropertyDrawer(typeof(StreamingFolder), useForChildren: true)]
    public class StreamingFolderPropertyDrawer : AssetFolderPropertyDrawer
    {

        protected override bool ValidatePath(string fullPath, string relativePath, out string errorMessage)
        {
            var fullInfo = new DirectoryInfo(fullPath);
            var streamingInfo = new DirectoryInfo(Application.streamingAssetsPath);

            if (IsInsideOrEqual(fullInfo, streamingInfo))
            {
                errorMessage = null;
                return true;
            }
            else
            {
                errorMessage = "The specified folder is not a streaming asset folder. Streaming asset folders must be inside project's Assets/StreamingAssets directory.";
                return false;
            }
        }

        private bool IsInsideOrEqual(DirectoryInfo path, DirectoryInfo folder)
        {
            if (path.Parent == null)
            {
                return false;
            }

            if (string.Equals(path.FullName, folder.FullName, StringComparison.InvariantCultureIgnoreCase))
            {
                return true;
            }

            return IsInsideOrEqual(path.Parent, folder);
        }
    }
}