// WL-814k 진단 ③ — AnimationMode 샘플링이 실루엣을 어떻게 바꾸는지 프레임별 실측
//   run: unity command run_script --file AgentScripts/WL814k_Diag3.cs --entry WL814k_Diag3.Run

using System;
using System.IO;
using System.Text;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;

public static class WL814k_Diag3
{
    const string kTxt = "AgentScripts/WL814k_DIAG3.txt";
    static string OutDir = @"E:\NerdNavis\nn_himminji\Screenshots_WL\WL814k_diag";
    static StringBuilder s_sb;
    static void L(string s) { s_sb.AppendLine(s); Debug.Log("[WL814k] " + s); }

    public static void Run()
    {
        s_sb = new StringBuilder();
        Directory.CreateDirectory(OutDir);
        L("WL-814k 진단 ③ · " + DateTime.Now.ToString("HH:mm:ss"));
        Test("Assets/Res_Addr/PC/Ai01.prefab", new[] { "Idle", "Run", "Atk2_wing", "LightHit", "death_F3441" });
        File.WriteAllText(kTxt, s_sb.ToString(), new UTF8Encoding(false));
        Debug.Log("[WL814k] → " + kTxt);
    }

    static void Test(string prefabPath, string[] clipNames)
    {
        GameObject pivot = null, inst = null, camGo = null;
        RenderTexture rt = null; Texture2D tex = null;
        bool am = false;
        try
        {
            EditorSceneManager.NewScene(NewSceneSetup.EmptyScene, NewSceneMode.Single);
            RenderSettings.ambientMode = UnityEngine.Rendering.AmbientMode.Flat;
            RenderSettings.ambientLight = new Color(0.212f, 0.227f, 0.259f, 1f);
            RenderSettings.fog = false; RenderSettings.skybox = null;
            var sun = new GameObject("Sun").AddComponent<Light>();
            sun.type = LightType.Directional; sun.intensity = 1.2f; sun.shadows = LightShadows.None;
            sun.transform.rotation = Quaternion.Euler(26.4f, 238.6f, 0f);

            var src = AssetDatabase.LoadAssetAtPath<GameObject>(prefabPath);
            pivot = new GameObject("Pivot");
            inst = (GameObject)PrefabUtility.InstantiatePrefab(src);
            PrefabUtility.UnpackPrefabInstance(inst, PrefabUnpackMode.Completely, InteractionMode.AutomatedAction);
            inst.transform.SetParent(pivot.transform, false);
            inst.transform.localPosition = Vector3.zero; inst.transform.localRotation = Quaternion.identity;
            foreach (var c in inst.GetComponentsInChildren<Collider>(true)) UnityEngine.Object.DestroyImmediate(c);
            foreach (var c in inst.GetComponentsInChildren<UnityEngine.AI.NavMeshAgent>(true)) UnityEngine.Object.DestroyImmediate(c);
            foreach (var c in inst.GetComponentsInChildren<Rigidbody>(true)) UnityEngine.Object.DestroyImmediate(c);
            foreach (var c in inst.GetComponentsInChildren<ParticleSystem>(true)) UnityEngine.Object.DestroyImmediate(c.gameObject);
            foreach (var mb in inst.GetComponentsInChildren<MonoBehaviour>(true)) if (mb != null) UnityEngine.Object.DestroyImmediate(mb);
            var anim = inst.GetComponent<Animator>();
            L("  Animator 살아있나 = " + (anim != null));

            float wpp = 3.4f * 2f / 240f;
            int P = 192;
            camGo = new GameObject("Cam");
            var cam = camGo.AddComponent<Camera>();
            cam.orthographic = true; cam.orthographicSize = P * wpp * 0.5f;
            cam.nearClipPlane = 0.01f; cam.farClipPlane = 200f;
            cam.clearFlags = CameraClearFlags.SolidColor; cam.allowHDR = false; cam.allowMSAA = false;
            camGo.transform.rotation = Quaternion.Euler(43.609f, 0f, 0f);
            camGo.transform.position = -camGo.transform.right * (wpp * 0.5f) - camGo.transform.up * (wpp * 0.5f) - camGo.transform.forward * 50f;

            rt = new RenderTexture(P, P, 24, RenderTextureFormat.ARGB32, RenderTextureReadWrite.sRGB);
            rt.filterMode = FilterMode.Point; rt.antiAliasing = 1; rt.Create();
            tex = new Texture2D(P, P, TextureFormat.RGBA32, false, false);

            var rac = anim.runtimeAnimatorController;
            var black = new Color32[P * P]; var white = new Color32[P * P];

            // ⓐ 샘플링 없이
            Box(cam, rt, tex, P, black, white, "샘플링 없음", null);

            AnimationMode.StartAnimationMode(); am = true;
            foreach (var name in clipNames)
            {
                AnimationClip clip = null;
                foreach (var c in rac.animationClips) if (c.name == name) { clip = c; break; }
                if (clip == null) { L("  클립 " + name + " 없음"); continue; }
                for (int f = 0; f < 4; f++)
                {
                    float t = clip.length * f / 4f;
                    AnimationMode.BeginSampling();
                    AnimationMode.SampleAnimationClip(inst, clip, t);
                    AnimationMode.EndSampling();
                    inst.transform.localPosition = Vector3.zero;
                    inst.transform.localRotation = Quaternion.identity;
                    string tag = name + "_f" + f;
                    Box(cam, rt, tex, P, black, white, tag, (name == "Idle" && f == 0) ? OutDir + "\\am_" + tag + ".png" : null);
                    L("        루트 localPos " + inst.transform.localPosition.ToString("F3") + " · lossyScale " + inst.transform.lossyScale.ToString("F3"));
                }
            }
            AnimationMode.StopAnimationMode(); am = false;
        }
        catch (Exception ex) { L("EXCEPTION " + ex); }
        finally
        {
            if (am && AnimationMode.InAnimationMode()) AnimationMode.StopAnimationMode();
            if (rt != null) { RenderTexture.active = null; rt.Release(); UnityEngine.Object.DestroyImmediate(rt); }
            if (tex != null) UnityEngine.Object.DestroyImmediate(tex);
            if (camGo != null) UnityEngine.Object.DestroyImmediate(camGo);
            if (pivot != null) UnityEngine.Object.DestroyImmediate(pivot);
            EditorSceneManager.NewScene(NewSceneSetup.EmptyScene, NewSceneMode.Single);
        }
    }

    static void Box(Camera cam, RenderTexture rt, Texture2D tex, int P, Color32[] black, Color32[] white, string tag, string savePng)
    {
        Grab(cam, rt, tex, P, Color.black, black, savePng == null ? null : savePng.Replace(".png", "_black.png"));
        Grab(cam, rt, tex, P, Color.white, white, savePng == null ? null : savePng.Replace(".png", "_white.png"));
        int cov = 0, minX = int.MaxValue, maxX = -1, minY = int.MaxValue, maxY = -1;
        for (int y = 0; y < P; y++)
            for (int x = 0; x < P; x++)
            {
                int i = y * P + x;
                float c = 1f - (((white[i].r - black[i].r) + (white[i].g - black[i].g) + (white[i].b - black[i].b)) / 765f);
                if (c < 0.5f) continue;
                cov++;
                if (x < minX) minX = x; if (x > maxX) maxX = x;
                if (y < minY) minY = y; if (y > maxY) maxY = y;
            }
        L(string.Format("  {0,-18} 덮인 {1,6} · x[{2}..{3}] y[{4}..{5}]", tag, cov, minX, maxX, minY, maxY));
    }

    static void Grab(Camera cam, RenderTexture rt, Texture2D tex, int P, Color bg, Color32[] outPx, string file)
    {
        cam.backgroundColor = bg;
        cam.targetTexture = rt; cam.Render(); cam.targetTexture = null;
        var active = RenderTexture.active; RenderTexture.active = rt;
        tex.ReadPixels(new Rect(0, 0, P, P), 0, 0); tex.Apply(false, false);
        RenderTexture.active = active;
        if (file != null) File.WriteAllBytes(file, tex.EncodeToPNG());
        Array.Copy(tex.GetPixels32(), outPx, outPx.Length);
    }
}