using System.Collections.Generic;
using UnityEditor;

public class ChangedConfigsProcessor : AssetPostprocessor
{
    private static void OnPostprocessAllAssets(
        string[] imported,
        string[] deleted,
        string[] moved,
        string[] moved_from_paths
    )
    {
        var accum = new List<string>(10);
        FilterConfigFiles(imported, accum);
        FilterConfigFiles(deleted, accum);
        FilterConfigFiles(moved, accum);
        FilterConfigFiles(moved_from_paths, accum);

        if (accum.Count == 0)
            return;

        //TODO: animate it properly someday
        EditorUtility.DisplayProgressBar("Building configs", "In progress...", 0.3f);

        try
        {
            BuildUtils.Urun();
        }
        finally
        {
            EditorUtility.ClearProgressBar();
        }
    }

    private static void FilterConfigFiles(IEnumerable<string> paths, ICollection<string> accum)
    {
        const string metagenConf = ".conf.js";
        const string bhlConf = ".bhl";

        foreach (string path in paths)
        {
            if (accum.Contains(path))
                continue;

            if (path.EndsWith(metagenConf) || path.EndsWith(bhlConf))
                accum.Add(path);
        }
    }
}