// WL839_ChargeVisuals.cs — 활 3타 「기 모으기」·「강화 화살 글로우」 시각 프리팹 생성 (#839 · PD 「활에 기가 모이는 임팩트 후 좀 더 큰 화살」)
//   unity command run_script --file AgentScripts/WL839_ChargeVisuals.cs --entry WL839_ChargeVisuals.Build
// 원본(Hovl Studio RPG VFX Bundle · 프로젝트 안 에셋)을 인스턴스로 풀어 파티클·렌더러만 남긴 WL 프리팹 2종을 만든다(원본 0줄):
//   Magic Sparks → Assets/WL/Combat/Weapon/Resources/WL/WL_BowChargeVisual.prefab  (활 소켓에 0.45 s · 크기 0.4)
//   Gold dot     → Assets/WL/Combat/Weapon/Resources/WL/WL_ArrowChargeVisual.prefab (강화 화살 자식 · 크기 0.5)
using System.Linq;
using System.Text;
using UnityEditor;
using UnityEngine;

public static class WL839_ChargeVisuals
{
    const string SrcDir = "Assets/ResWork/VFX/Hovl Studio/RPG VFX Bundle/Prefabs/Magic buffs and hits/";
    const string DstDir = "Assets/WL/Combat/Weapon/Resources/WL/";

    public static object Build()
    {
        if (EditorApplication.isPlaying) return "skipped: playing";
        var sb = new StringBuilder();
        sb.Append(Clone(SrcDir + "Magic Sparks.prefab", DstDir + "WL_BowChargeVisual.prefab", "WL_BowChargeVisual", 0.4f, true)).Append('\n');
        sb.Append(Clone(SrcDir + "Gold dot.prefab", DstDir + "WL_ArrowChargeVisual.prefab", "WL_ArrowChargeVisual", 0.5f, true));
        AssetDatabase.SaveAssets();
        return sb.ToString();
    }

    static string Clone(string srcPath, string dstPath, string name, float scale, bool loop)
    {
        var src = AssetDatabase.LoadAssetAtPath<GameObject>(srcPath);
        if (src == null) return "원본 없음 " + srcPath;
        var inst = (GameObject)PrefabUtility.InstantiatePrefab(src);
        try
        {
            PrefabUtility.UnpackPrefabInstance(inst, PrefabUnpackMode.Completely, InteractionMode.AutomatedAction);
            inst.name = name;
            inst.transform.position = Vector3.zero; inst.transform.rotation = Quaternion.identity; inst.transform.localScale = Vector3.one * scale;
            int removed = 0;
            for (int pass = 0; pass < 6; pass++)
            {
                var comps = inst.GetComponents<Component>().Where(c => c != null && !(c is Transform)).ToArray();
                if (comps.Length == 0) break;
                foreach (var c in comps.OrderBy(c => c is Rigidbody ? 2 : (c is Collider ? 1 : 0)))
                {
                    if (c is ParticleSystem || c is ParticleSystemRenderer) continue;
                    try { Object.DestroyImmediate(c); removed++; } catch (System.Exception) { }
                }
                if (inst.GetComponents<Component>().All(c => c is Transform || c is ParticleSystem || c is ParticleSystemRenderer)) break;
            }
            foreach (var col in inst.GetComponentsInChildren<Collider>(true)) { Object.DestroyImmediate(col); removed++; }
            foreach (var mb in inst.GetComponentsInChildren<MonoBehaviour>(true)) { if (mb != null) { Object.DestroyImmediate(mb); removed++; } }
            foreach (var l in inst.GetComponentsInChildren<Light>(true)) { Object.DestroyImmediate(l); removed++; }
            int ps = 0;
            foreach (var p in inst.GetComponentsInChildren<ParticleSystem>(true)) { var m = p.main; m.playOnAwake = true; m.loop = loop; ps++; }
            PrefabUtility.SaveAsPrefabAsset(inst, dstPath);
            AssetDatabase.ImportAsset(dstPath);
            return "저장 " + dstPath + " · 제거 " + removed + " · 파티클 " + ps + " · 크기 " + scale;
        }
        finally { Object.DestroyImmediate(inst); }
    }
}