namespace AtlasUtility
{
    using UnityEditor;

    using System.IO;
    using System.Collections.Generic;

    public class Postprocess : AssetPostprocessor
    {
        public static void OnPostprocessAllAssets(string[] importedPathes, string[] deletedPathes, string[] movedPathes, string[] movedFromAssetPathes)
        {
            List<string> pngPathList = new List<string>();

            for (int i = 0; i < deletedPathes.Length; i++)
            {
                if (Path.GetExtension(deletedPathes[i]) == ".png")
                {
                    pngPathList.Add(deletedPathes[i]);
                }
            }

            if (pngPathList.Count == 0)
            {
                return;
            }

            List<string> guidList = GUIDManager.GetGUID(pngPathList);

            List<AtlasReferencePair> referencePairList = AtlasReferenceManager.GetReferencePair(guidList);

            AtlasReferenceManager.RemoveReferencePair(referencePairList);
            PlatformReferenceManager.RemoveReference(guidList);

            List<AtlasReference> fromReferenceList = new List<AtlasReference>();
            List<AtlasReference> toReferenceList = new List<AtlasReference>();

            foreach (var referencePair in referencePairList)
            {
                fromReferenceList.Add(referencePair.AtlasReference);
                toReferenceList.Add(referencePair.SourceAtlasReference);
            }

            AtlasReferenceManager.ChangeReference(fromReferenceList, toReferenceList);
        }
    }
}