// WL816t_Bake.cs — 검기 호 ↔ 무기 정합 실측·재베이크 (PD #816t)
//   unity command run_script --file AgentScripts/WL816t_Bake.cs --entry WL816t_Bake.Probe --args "[10101, false]"
//   unity command run_script --file AgentScripts/WL816t_Bake.cs --entry WL816t_Bake.Probe --args "[10101, true]"   (SO 기록)
//
// WL804_Bake 와 같은 수식(SlashArcMeasure)·같은 프리뷰 샘플링을 쓰되 **런타임과 같은 캐릭터**로 잰다.
//   · WL804_Bake : Assets/Res_Addr/PC/Ai01.prefab · root scale 1 · 무기 localScale 1 · root.InverseTransformPoint(스케일 포함)
//   · 런타임     : WLCharacterSwapSettings.Resolve("Ai01") = LH_M05 · root scale = f_Scale × heightCompensation
//                  · 무기 = WLWeaponFitter.Fit(targetRatio 0.6) · ToLocalPos = 회전만(스케일 제외)
// 두 좌표계가 달라서 베이크 행이 현재 캐릭터의 칼끝 원과 어긋난다 — 그 편차를 재고 새 행을 만든다.
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;
using WL.Combat;

public static class WL816t_Bake
{
    const string SettingsPath = "Assets/WL/Settings/Resources/WL/SlashTrailSettings.asset";
    const string ClassConfigJson = "Assets/ResWork/Table/Export/ClassConfig.json";
    const string AnimDir = "Assets/Res_Addr/Animations/Animation/OneHand/Knight@Attack{0}_S.FBX";
    const float BakedQuality = 50f;

    class Row
    {
        public int stage; public string clipName;
        public Vector3 pivot, normal, bisector, startDir; public float tipR, hiltR, sweep, path, fitQ, q;
        public Vector3 tipMid;          // 스윙 중간 프레임의 칼끝(런타임 로컬)
        public string src;
    }

    static readonly int[] Classes = { 10101, 10102, 10501, 10502 };

    public static object Probe(int classId, bool apply) { return Run(classId, apply, true); }
    public static object ProbeAll()
    {
        var sb = new StringBuilder();
        foreach (var c in Classes) sb.AppendLine(Run(c, false, false));
        return sb.ToString();
    }
    public static object ApplyAll()
    {
        var sb = new StringBuilder();
        foreach (var c in Classes) sb.AppendLine(Run(c, true, false));
        return sb.ToString();
    }

    /// <summary>공격 범위 정합 스위치 on/off + 배수. 되돌리기 = Set(false, 1)</summary>
    public static object SetRangeFit(bool on, float rangeScale)
    {
        var s = AssetDatabase.LoadAssetAtPath<SlashTrailSettings>(SettingsPath);
        if (s == null) return "설정 에셋 없음";
        string before = string.Format("before: arcFitAttackRange={0} arcRangeScale={1:F2} arcSizeScale={2:F2}", s.arcFitAttackRange, s.arcRangeScale, s.arcSizeScale);
        s.arcFitAttackRange = on; s.arcRangeScale = rangeScale;
        EditorUtility.SetDirty(s); AssetDatabase.SaveAssets();
        return before + string.Format(" → after: arcFitAttackRange={0} arcRangeScale={1:F2} arcSizeScale={2:F2}", s.arcFitAttackRange, s.arcRangeScale, s.arcSizeScale);
    }

    /// <summary>공격 범위(사거리) 정적 검산 — 런타임 ResolveAttackReach 와 같은 SOT.</summary>
    public static object Reach(int classId)
    {
        float atk = 0f;
        var arr = Newtonsoft.Json.Linq.JArray.Parse(System.IO.File.ReadAllText(ClassConfigJson));
        foreach (var row in arr) { if ((string)row["n_ClassID"] == classId.ToString()) { float.TryParse((string)row["f_AttackRange"], out atk); break; } }
        float margin = WL.Settings.WLTargetingSettings.ImmediateAttackMargin;
        return string.Format("class {0} · f_AttackRange={1:F2} + AttackRange_Up(평시 0) + immediateAttackMargin={2:F2} = reach {3:F2} m", classId, atk, margin, atk + margin);
    }

    static string Run(int classId, bool apply, bool table)
    {
        var sb = new StringBuilder();
        var settings = AssetDatabase.LoadAssetAtPath<SlashTrailSettings>(SettingsPath);
        if (settings == null) return "설정 에셋 없음";

        // ── ClassConfig (C45 · 상수 금지) ────────────────────────────────────
        string weaponName = null; int socketIndex = -1; float fScale = 1f, atkRange = 0f;
        try
        {
            var arr = Newtonsoft.Json.Linq.JArray.Parse(System.IO.File.ReadAllText(ClassConfigJson));
            foreach (var row in arr)
            {
                if ((string)row["n_ClassID"] != classId.ToString()) continue;
                weaponName = (string)row["s_WeaponRHPrefab"]; socketIndex = int.Parse((string)row["n_WeaponRHIndex"]);
                if (string.IsNullOrEmpty(weaponName)) { weaponName = (string)row["s_WeaponLHPrefab"]; socketIndex = int.Parse((string)row["n_WeaponLHIndex"]); }
                float.TryParse((string)row["f_Scale"], out fScale);
                float.TryParse((string)row["f_AttackRange"], out atkRange);
                break;
            }
        }
        catch (System.Exception ex) { return "ClassConfig parse fail: " + ex.Message; }
        if (string.IsNullOrEmpty(weaponName) || socketIndex < 0) return "class " + classId + " weapon not found";

        // ── 런타임과 같은 PC 프리팹·스케일 ──────────────────────────────────
        string pcName = WL.Character.WLCharacterSwapSettings.Resolve("Ai01");
        float heightComp = WL.Character.WLCharacterSwapSettings.HeightCompensation;
        string pcPath = "Assets/Res_Addr/PC/" + pcName + ".prefab";
        var model = AssetDatabase.LoadAssetAtPath<GameObject>(pcPath);
        var weaponPrefab = AssetDatabase.LoadAssetAtPath<GameObject>("Assets/Res_Addr/Weapon/" + weaponName + ".prefab");
        if (model == null || weaponPrefab == null) return "load fail pc=" + pcPath + " weapon=" + weaponName;

        float rootScale = Mathf.Max(fScale, 0.01f) * Mathf.Max(heightComp, 0.01f);
        sb.AppendLine(string.Format("== class {0} · PC {1}(swap:{2}) rootScale={3:F4}(f_Scale {4:F2} × heightComp {5:F4}) · weapon {6}@{7} · f_AttackRange={8:F2}",
            classId, pcName, pcName != "Ai01", rootScale, fScale, heightComp, weaponName, socketIndex, atkRange));

        var scene = EditorSceneManager.NewPreviewScene();
        bool animMode = false;
        var rows = new List<Row>();
        try
        {
            var go = (GameObject)PrefabUtility.InstantiatePrefab(model, scene);
            go.transform.position = Vector3.zero; go.transform.rotation = Quaternion.identity;
            go.transform.localScale = Vector3.one * rootScale;

            var pc = go.GetComponentInChildren<PCActor>(true);
            if (pc == null || pc.tfs_weapon == null || socketIndex >= pc.tfs_weapon.Length) return sb + "\ntfs_weapon missing";
            var socket = pc.tfs_weapon[socketIndex];

            var w = (GameObject)PrefabUtility.InstantiatePrefab(weaponPrefab, scene);
            w.transform.SetParent(socket, false);
            w.transform.localPosition = Vector3.zero; w.transform.localRotation = Quaternion.identity; w.transform.localScale = Vector3.one;

            // ── 814p 무기 축소(런타임과 동일 경로) ──────────────────────────
            var fitter = go.GetComponent<WL.Character.WLWeaponFitter>();
            if (fitter == null) fitter = go.AddComponent<WL.Character.WLWeaponFitter>();
            float wk = fitter.Fit(w.transform, socket);
            sb.AppendLine(string.Format("   무기 보정 ×{0:F4} (WLWeaponFitter.Fit · targetRatio={1:F2})", wk, WL.Character.WLWeaponFitSettings.ResolveRatio(w.name)));

            // ── 칼자루/칼끝 로컬(WL804_Bake·MeasureSlot 과 같은 규칙) ────────
            Renderer best = null; Mesh bestMesh = null; float bestExtent = 0f;
            foreach (var r in socket.GetComponentsInChildren<Renderer>(true))
            {
                var mf2 = r.GetComponent<MeshFilter>(); var smr = r as SkinnedMeshRenderer;
                var mesh = smr != null ? smr.sharedMesh : (mf2 != null ? mf2.sharedMesh : null);
                if (mesh == null) continue;
                var ws = Vector3.Scale(mesh.bounds.size, Abs(r.transform.lossyScale));
                float longest = Mathf.Max(ws.x, Mathf.Max(ws.y, ws.z));
                if (longest > bestExtent) { bestExtent = longest; best = r; bestMesh = mesh; }
            }
            if (best == null) return sb + "\nno renderer under socket";
            var b = bestMesh.bounds; var size = Vector3.Scale(b.size, Abs(best.transform.lossyScale));
            int axis = size.x >= size.y && size.x >= size.z ? 0 : (size.y >= size.z ? 1 : 2);
            Vector3 axisDir = Vector3.zero; axisDir[axis] = 1f;
            Vector3 eA = best.transform.TransformPoint(b.center - axisDir * b.extents[axis]);
            Vector3 eB = best.transform.TransformPoint(b.center + axisDir * b.extents[axis]);
            bool aIsHilt = (eA - socket.position).sqrMagnitude <= (eB - socket.position).sqrMagnitude;
            Vector3 hiltLocal = socket.InverseTransformPoint(aIsHilt ? eA : eB);
            Vector3 tipLocal = socket.InverseTransformPoint(aIsHilt ? eB : eA);
            sb.AppendLine(string.Format("   무기 월드 길이 {0:F3} m · 칼끝-자루 {1:F3} m", bestExtent,
                Vector3.Distance(socket.TransformPoint(tipLocal), socket.TransformPoint(hiltLocal))));

            var anim = go.GetComponentInChildren<Animator>();
            var animGo = anim.gameObject; anim.applyRootMotion = false;
            var root = go.transform;

            AnimationMode.StartAnimationMode(); animMode = true;
            for (int stage = 1; stage <= 3; stage++)
            {
                var fbx = string.Format(AnimDir, stage);
                var clips = AssetDatabase.LoadAllAssetsAtPath(fbx).OfType<AnimationClip>().Where(c => !c.name.StartsWith("__preview")).ToArray();
                var clip = clips.FirstOrDefault(c => c.name == "Attack" + stage + "_S_" + classId) ?? clips.FirstOrDefault(c => c.name.StartsWith("Attack" + stage));
                if (clip == null) { sb.AppendLine("   [" + stage + "타] 클립 없음 " + fbx); continue; }

                // 클립 전체를 60 Hz 로 훑고 런타임과 같은 속도 트림으로 스윙 구간만 남긴다
                int n0 = Mathf.Max(8, Mathf.RoundToInt(clip.length * 60f) + 1);
                var tAll = new Vector3[n0]; var hAll = new Vector3[n0];
                for (int i = 0; i < n0; i++)
                {
                    float t = clip.length * i / (n0 - 1);
                    AnimationMode.BeginSampling();
                    AnimationMode.SampleAnimationClip(animGo, clip, t);
                    AnimationMode.EndSampling();
                    // 🔴 런타임 ToLocalPos 와 동일 = 회전만(스케일 제외)
                    tAll[i] = Quaternion.Inverse(root.rotation) * (socket.TransformPoint(tipLocal) - root.position);
                    hAll[i] = Quaternion.Inverse(root.rotation) * (socket.TransformPoint(hiltLocal) - root.position);
                }
                int lo = 0, hi = n0 - 1;
                float ratio = settings.swingTrimSpeedRatio;
                if (ratio > 0f)
                {
                    float maxStep = 0f; var step = new float[n0];
                    for (int i = 1; i < n0; i++) { step[i] = Vector3.Distance(tAll[i], tAll[i - 1]); if (step[i] > maxStep) maxStep = step[i]; }
                    float th = maxStep * ratio; int f = -1, l = -1;
                    for (int i = 1; i < n0; i++) if (step[i] >= th) { if (f < 0) f = i - 1; l = i; }
                    if (f >= 0 && l > f) { lo = f; hi = l; }
                }
                int n = hi - lo + 1;
                if (n < 3) { lo = 0; hi = n0 - 1; n = n0; }
                var tips = new Vector3[n]; var hilts = new Vector3[n];
                for (int i = 0; i < n; i++) { tips[i] = tAll[lo + i]; hilts[i] = hAll[lo + i]; }

                float fullPath = 0f; Vector3 pd = (tips[0] - hilts[0]).normalized; float bladeAng = 0f;
                for (int i = 1; i < n; i++)
                {
                    fullPath += Vector3.Distance(tips[i], tips[i - 1]);
                    var d = (tips[i] - hilts[i]).normalized; bladeAng += Vector3.Angle(pd, d); pd = d;
                }

                var fit = SlashArcMeasure.FitArcOrdered(tips, n);
                if (!fit.valid) { sb.AppendLine("   [" + stage + "타] 원 피팅 실패 (n=" + n + ")"); continue; }
                Vector3 nrm = fit.normal, pivot = fit.center;
                float tipR = SlashArcMeasure.MeanRadius(tips, n, pivot, nrm);
                float hiltR = SlashArcMeasure.MeanRadius(hilts, n, pivot, nrm);
                float dev = SlashArcMeasure.RadiusDeviation(tips, n, pivot, nrm, tipR);
                string pivotSrc = "칼끝원";
                if (tipR < 1e-3f || tipR <= hiltR * 1.15f || dev > tipR * 0.25f)
                {
                    Vector3 tc = SlashArcMeasure.CentroidOnPlane(tips, n, nrm, tips[0]);
                    pivot = SlashArcMeasure.CentroidOnPlane(hilts, n, nrm, tc);
                    tipR = SlashArcMeasure.MeanRadius(tips, n, pivot, nrm);
                    hiltR = SlashArcMeasure.MeanRadius(hilts, n, pivot, nrm);
                    pivotSrc = "손잡이중심";
                }
                Vector3 sd2, bis; float sweep;
                if (!SlashArcMeasure.RecomputeAboutPivot(tips, n, pivot, ref nrm, out sd2, out bis, out sweep))
                { sb.AppendLine("   [" + stage + "타] RecomputeAboutPivot 실패"); continue; }
                float fitQ = Mathf.Clamp01(1f - (dev / Mathf.Max(tipR, 1e-3f)) * 2f);

                rows.Add(new Row
                {
                    stage = stage, clipName = "Effect_Slash_" + classId + "_" + stage,
                    pivot = pivot, normal = nrm, bisector = bis, startDir = sd2,
                    tipR = tipR, hiltR = hiltR, sweep = sweep, path = fullPath, fitQ = fitQ,
                    q = fullPath * Mathf.Max(fitQ, 0.05f), tipMid = tips[n / 2],
                    src = string.Format("wl816t {0:yyyy-MM-dd HH:mm} {1} f{2}~f{3}/{4}@60Hz n={5} PC={6} rootScale={7:F4} weaponK={8:F4} path={9:F2} bladeAng={10:F0}° sweep={11:F1}° pivot={12} tipR={13:F3} hiltR={14:F3} dev={15:F3} fitQ={16:F2} (런타임 로컬=회전만)",
                        System.DateTime.Now, clip.name, lo, hi, n0 - 1, n, pcName, rootScale, wk, fullPath, bladeAng, sweep, pivotSrc, tipR, hiltR, dev, fitQ)
                });
            }
            AnimationMode.StopAnimationMode(); animMode = false;

            // ── 비교 + 8방향 편차 ───────────────────────────────────────────
            sb.AppendLine("");
            sb.AppendLine("clip                    | old pivot(로컬)        tipR   | new pivot(로컬)        tipR   | Δpivot(m) ΔtipR(m) Δnormal(°)");
            var cams = CamBasis();
            var devTable = new StringBuilder();
            foreach (var r in rows)
            {
                var old = settings.FindCalibration(classId, r.clipName);
                if (old == null) { sb.AppendLine(string.Format("{0,-23} | (없음)                              | {1} {2:F3} | -", r.clipName, V(r.pivot), r.tipR)); continue; }
                float dPiv = Vector3.Distance(old.pivot, r.pivot);
                float dTip = r.tipR - old.tipRadius;
                float dNrm = Vector3.Angle(old.planeNormal, r.normal);
                sb.AppendLine(string.Format("{0,-23} | {1} {2:F3} | {3} {4:F3} | {5:F3}     {6:+0.000;-0.000}   {7:F1}",
                    r.clipName, V(old.pivot), old.tipRadius, V(r.pivot), r.tipR, dPiv, dTip, dNrm));

                // 8방향: 구 행으로 배치한 호의 중심/테두리 vs 실제 칼끝
                if (!table) continue;
                devTable.AppendLine("  " + r.clipName);
                devTable.AppendLine("   yaw |  Δ중심(m)  화면Δ가로(m) 화면Δ세로(m) | 칼끝-호테두리 반경차(m)");
                for (int k = 0; k < 8; k++)
                {
                    float yaw = k * 45f;
                    var rot = Quaternion.Euler(0f, yaw, 0f);
                    Vector3 oldPivW = rot * old.pivot;                 // root at origin
                    Vector3 newPivW = rot * r.pivot;
                    Vector3 tipW = rot * r.tipMid;
                    Vector3 d = oldPivW - newPivW;
                    float radialGap = Vector3.Distance(tipW, oldPivW) - old.tipRadius * Mathf.Max(settings.arcSizeScale, 0.01f);
                    devTable.AppendLine(string.Format("   {0,3:F0} |   {1:F3}     {2,8:+0.000;-0.000}      {3,8:+0.000;-0.000}   |  {4,8:+0.000;-0.000}",
                        yaw, d.magnitude, Vector3.Dot(d, cams[0]), Vector3.Dot(d, cams[1]), radialGap));
                }
            }
            sb.AppendLine("");
            sb.AppendLine("8방향 편차(카메라 기준 · PD 구도 yaw45 내려보기 45°)");
            sb.Append(devTable);

            if (apply)
            {
                int removed = 0;
                foreach (var r in rows)
                {
                    removed += settings.swingCalibrations.RemoveAll(c => c != null && c.classId == classId && c.clipName == r.clipName);
                    settings.swingCalibrations.Add(new SwingCalibration
                    {
                        classId = classId, clipName = r.clipName, kind = SwingKind.Swing,
                        planeNormal = r.normal, bisector = r.bisector, startDir = r.startDir,
                        pivot = r.pivot, tipRadius = r.tipR, hiltRadius = r.hiltR, sweepDeg = r.sweep,
                        stabAxis = Vector3.forward, stabStart = r.pivot, stabLength = Mathf.Max(r.tipR, 1e-3f),
                        quality = Mathf.Max(BakedQuality, r.q), source = r.src
                    });
                }
                EditorUtility.SetDirty(settings);
                AssetDatabase.SaveAssets();
                sb.AppendLine(string.Format("APPLIED {0}행 (기존 {1}행 교체 · 총 {2}행)", rows.Count, removed, settings.swingCalibrations.Count));
            }
            else sb.AppendLine("(dry)");
        }
        finally
        {
            if (animMode) AnimationMode.StopAnimationMode();
            EditorSceneManager.ClosePreviewScene(scene);
        }
        return sb.ToString();
    }

    /// <summary>PD 구도(비스듬히 내려보는 카메라)의 화면 가로·세로 축(월드).</summary>
    static Vector3[] CamBasis()
    {
        var rot = Quaternion.Euler(45f, 45f, 0f);
        return new[] { rot * Vector3.right, rot * Vector3.up };
    }

    static string V(Vector3 v) { return string.Format("({0,6:F3},{1,6:F3},{2,6:F3})", v.x, v.y, v.z); }
    static Vector3 Abs(Vector3 v) { return new Vector3(Mathf.Abs(v.x), Mathf.Abs(v.y), Mathf.Abs(v.z)); }
}