// WL_DressingGrassRemove.cs — PD 지시(2026-09-06 22:3x) "해당 잔디 에셋도 제거" (에디트 모드)
//   unity command run_script --file AgentScripts/WL_DressingGrassRemove.cs --entry WL_DressingGrassRemove.Count
//   unity command run_script --file AgentScripts/WL_DressingGrassRemove.cs --entry WL_DressingGrassRemove.Remove
// WL_Nature.prefab 드레싱 중 소스 프리팹 경로/이름에 "Grass" 가 들어가는 인스턴스(LMHPOLY Vegetation 풀)를 제거한다. 꽃·버섯·덤불·나무·바위는 유지.
using System.Linq;
using System.Text;
using UnityEditor;
using UnityEngine;

public static class WL_DressingGrassRemove
{
    const string MapPrefab = "Assets/Res_Addr/Map/WL_Nature.prefab";

    static bool IsGrass(GameObject go)
    {
        var src = PrefabUtility.GetCorrespondingObjectFromOriginalSource(go);
        string path = src != null ? AssetDatabase.GetAssetPath(src) : "";
        string n = go.name;
        return (path.IndexOf("Grass", System.StringComparison.OrdinalIgnoreCase) >= 0 || n.IndexOf("Grass", System.StringComparison.OrdinalIgnoreCase) >= 0)
               && path.IndexOf("/Vegetation/", System.StringComparison.OrdinalIgnoreCase) >= 0;
    }

    public static object Count()
    {
        var root = PrefabUtility.LoadPrefabContents(MapPrefab);
        try
        {
            var all = root.GetComponentsInChildren<Transform>(true).Select(t => t.gameObject)
                          .Where(g => PrefabUtility.IsAnyPrefabInstanceRoot(g) && IsGrass(g)).ToList();
            var byName = all.GroupBy(g => System.Text.RegularExpressions.Regex.Replace(g.name, @" \(\d+\)$", "")).OrderByDescending(x => x.Count());
            var sb = new StringBuilder("grass instances=" + all.Count + "\n");
            foreach (var g in byName.Take(12)) sb.AppendLine("  " + g.Key + " x" + g.Count());
            return sb.ToString();
        }
        finally { PrefabUtility.UnloadPrefabContents(root); }
    }

    public static object Remove()
    {
        if (Application.isPlaying) return "refused: Play mode";
        var root = PrefabUtility.LoadPrefabContents(MapPrefab);
        try
        {
            var all = root.GetComponentsInChildren<Transform>(true).Select(t => t.gameObject)
                          .Where(g => PrefabUtility.IsAnyPrefabInstanceRoot(g) && IsGrass(g)).ToList();
            int n = all.Count;
            foreach (var g in all) if (g != null) Object.DestroyImmediate(g);
            PrefabUtility.SaveAsPrefabAsset(root, MapPrefab);
            int remain = root.GetComponentsInChildren<Transform>(true).Count(t => IsGrass(t.gameObject));
            return "removed grass instances=" + n + " remaining=" + remain + " saved " + MapPrefab;
        }
        finally { PrefabUtility.UnloadPrefabContents(root); }
    }
}