// WL-816e — Play 중 진단 · 성능 실측 · 오프스크린 캡처 (배치모드 헤드리스에서도 동작)
public static class WL816e_Play
{
    const string Dir = "Screenshots_WL/WL816e/";
    const int W = 1080, H = 1920;

    public static void Run() { Report("b", true); }
    public static void RunOff() { Report("a", true); }

    public static void Report(string tag, bool shoot)
    {
        var sb = new System.Text.StringBuilder();
        var cfg = WL.Look.Farm.WLIslandLookSettings.Instance;
        sb.AppendLine("isPlaying=" + UnityEngine.Application.isPlaying + " · scene=" +
                      UnityEngine.SceneManagement.SceneManager.GetActiveScene().name +
                      " · sceneCount=" + UnityEngine.SceneManagement.SceneManager.sceneCount);
        sb.AppendLine("SO        : enabled_=" + (cfg == null ? -1 : cfg.enabled_) +
                      " applyLook=" + (cfg == null ? -1 : cfg.applyLook) +
                      " grass=" + (cfg == null ? -1 : cfg.grassEnabled) +
                      " maxInstances=" + (cfg == null ? -1 : cfg.maxInstances));
        sb.AppendLine("IslandLook: 렌더러 " + WL.Look.Farm.WLIslandLook.SwappedRenderers +
                      " · 슬롯 " + WL.Look.Farm.WLIslandLook.SwappedSlots +
                      " · rescan " + WL.Look.Farm.WLIslandLook.Rescans +
                      " · dirLight " + WL.Look.Farm.WLIslandLook.LightingApplied +
                      " · refLook " + WL.Look.Farm.WLIslandLook.ReferenceLookApplied +
                      " · grassSpawned " + WL.Look.Farm.WLIslandLook.GrassSpawned +
                      " · grassRebuild " + WL.Look.Farm.WLIslandLook.GrassRebuilds);
        sb.AppendLine("Grass     : " + WL.Look.Farm.WLIslandGrass.LastLog);
        sb.AppendLine("RefLook   : applied=" + WL.Look.Arena.WLReferenceLook.IsApplied
                    + " outlined=" + WL.Look.Arena.WLReferenceLook.OutlinedRenderers
                    + " contrastMat=" + WL.Look.Arena.WLReferenceLook.ContrastMaterials);
        sb.AppendLine("ambient   : " + UnityEngine.RenderSettings.ambientMode + " " + UnityEngine.RenderSettings.ambientLight
                    + " · skybox=" + (UnityEngine.RenderSettings.skybox != null ? UnityEngine.RenderSettings.skybox.name : "없음")
                    + " · fog=" + UnityEngine.RenderSettings.fog);
        var ls = UnityEngine.Object.FindObjectsByType<UnityEngine.Light>(UnityEngine.FindObjectsInactive.Exclude, UnityEngine.FindObjectsSortMode.None);
        for (int i = 0; i < ls.Length; i++)
            sb.AppendLine("light     : " + ls[i].name + " " + ls[i].type + " " + ls[i].color + " I=" + ls[i].intensity + " " + ls[i].shadows);

        // 섬 현황
        var mgr = UnityEngine.Object.FindFirstObjectByType<CryingSnow.FarmingIsland.IslandManager>(UnityEngine.FindObjectsInactive.Include);
        int unlocked = 0, total = 0;
        var isls = UnityEngine.Object.FindObjectsByType<CryingSnow.FarmingIsland.Island>(UnityEngine.FindObjectsInactive.Include, UnityEngine.FindObjectsSortMode.None);
        for (int i = 0; i < isls.Length; i++) { total++; if (isls[i].IsUnlocked) unlocked++; }
        sb.AppendLine("island    : 총 " + total + " · 열린 " + unlocked +
                      " · coin=" + (mgr == null ? -1 : mgr.Coin) +
                      " · navmesh=" + (mgr == null ? false : mgr.HasNavMesh));

        // 씬 정적 비용
        var rends = UnityEngine.Object.FindObjectsByType<UnityEngine.Renderer>(UnityEngine.FindObjectsInactive.Exclude, UnityEngine.FindObjectsSortMode.None);
        long tris = 0; int slots = 0;
        var shaders = new System.Collections.Generic.Dictionary<string, int>();
        for (int i = 0; i < rends.Length; i++)
        {
            var r = rends[i];
            if (r is UnityEngine.ParticleSystemRenderer) continue;
            UnityEngine.Mesh mesh = null;
            var mr = r as UnityEngine.MeshRenderer;
            var sk = r as UnityEngine.SkinnedMeshRenderer;
            if (mr != null) { var mf = r.GetComponent<UnityEngine.MeshFilter>(); if (mf != null) mesh = mf.sharedMesh; }
            else if (sk != null) mesh = sk.sharedMesh;
            if (mesh != null) for (int s = 0; s < mesh.subMeshCount; s++) tris += mesh.GetIndexCount(s) / 3;
            var ms = r.sharedMaterials;
            for (int m = 0; m < ms.Length; m++)
            {
                if (ms[m] == null) continue; slots++;
                string sh = ms[m].shader.name;
                shaders[sh] = shaders.TryGetValue(sh, out int v) ? v + 1 : 1;
            }
        }
        sb.Append("씬 정적   : 렌더러 " + rends.Length + " · 슬롯 " + slots + " · 삼각형 " + tris.ToString("N0") + " · 셰이더 ");
        foreach (var kv in shaders) sb.Append(kv.Key + " x" + kv.Value + " · ");
        sb.AppendLine();

        // ── 성능 실측(같은 카메라로 N 프레임 렌더 시간) ────────────────
        var cam = FindCam("MainCamera");
        if (cam != null)
        {
            var perf = Measure(cam, 60);
            sb.AppendLine("성능(" + tag + ") : " + perf);
        }

        if (shoot)
        {
            System.IO.Directory.CreateDirectory(Dir);
            Shot(cam, Dir + tag + "_play_main.png");
            Shot(TopDownCam(), Dir + tag + "_play_top.png");
            Shot(DemoAngleCam(), Dir + tag + "_play_demoangle.png");
            sb.AppendLine("캡처 " + tag + "_play_main / _play_top / _play_demoangle");
        }
        UnityEngine.Debug.Log("[WL816e Play " + tag + "]\n" + sb.ToString());
    }

    /// <summary>같은 카메라를 N 번 렌더해 프레임 시간을 잰다 + 마지막 프레임의 드로우콜/삼각형.</summary>
    public static string Measure(UnityEngine.Camera cam, int frames)
    {
        var rt = new UnityEngine.RenderTexture(W, H, 24, UnityEngine.RenderTextureFormat.ARGB32, UnityEngine.RenderTextureReadWrite.sRGB);
        rt.antiAliasing = 1; rt.Create();
        var prevT = cam.targetTexture;
        cam.targetTexture = rt;
        cam.Render();                                  // 워밈업
        var sw = System.Diagnostics.Stopwatch.StartNew();
        for (int i = 0; i < frames; i++) cam.Render();
        sw.Stop();
        int dc = UnityEditor.UnityStats.drawCalls;
        int batches = UnityEditor.UnityStats.batches;
        int setPass = UnityEditor.UnityStats.setPassCalls;
        int tri = UnityEditor.UnityStats.triangles;
        int vert = UnityEditor.UnityStats.vertices;
        cam.targetTexture = prevT;
        rt.Release(); UnityEngine.Object.DestroyImmediate(rt);
        double ms = sw.Elapsed.TotalMilliseconds / frames;
        return "렌더 " + ms.ToString("F2") + " ms/frame (= " + (1000.0 / System.Math.Max(0.001, ms)).ToString("F0") + " FPS 환산)"
             + " · 드로우콜 " + dc + " · 배치 " + batches + " · SetPass " + setPass
             + " · 삼각형 " + tri.ToString("N0") + " · 정점 " + vert.ToString("N0");
    }

    // ── 카메라 ─────────────────────────────────────────────────────────
    public static UnityEngine.Camera TopDownCam()
    {
        var go = UnityEngine.GameObject.Find("__WL816eTop");
        if (go == null) { go = new UnityEngine.GameObject("__WL816eTop"); go.hideFlags = UnityEngine.HideFlags.DontSave; }
        var c = go.GetComponent<UnityEngine.Camera>();
        if (c == null) c = go.AddComponent<UnityEngine.Camera>();
        c.orthographic = true; c.orthographicSize = 9f;
        c.nearClipPlane = 0.3f; c.farClipPlane = 500f;
        c.clearFlags = UnityEngine.CameraClearFlags.Skybox;
        c.depth = -100f;
        var rot = UnityEngine.Quaternion.Euler(50f, 0f, 0f);
        go.transform.rotation = rot;
        go.transform.position = new UnityEngine.Vector3(0f, 0f, 4f) - rot * UnityEngine.Vector3.forward * 40f;
        if (go.GetComponent<UnityEngine.Rendering.Universal.UniversalAdditionalCameraData>() == null)
            go.AddComponent<UnityEngine.Rendering.Universal.UniversalAdditionalCameraData>();
        return c;
    }

    public static UnityEngine.Camera DemoAngleCam()
    {
        var go = UnityEngine.GameObject.Find("__WL816eDemoAngle");
        if (go == null) { go = new UnityEngine.GameObject("__WL816eDemoAngle"); go.hideFlags = UnityEngine.HideFlags.DontSave; }
        var c = go.GetComponent<UnityEngine.Camera>();
        if (c == null) c = go.AddComponent<UnityEngine.Camera>();
        c.orthographic = true; c.orthographicSize = 10f;
        c.nearClipPlane = 0.3f; c.farClipPlane = 500f;
        c.clearFlags = UnityEngine.CameraClearFlags.Skybox;
        c.backgroundColor = new UnityEngine.Color(0.192f, 0.302f, 0.475f, 0f);
        c.depth = -100f;
        var rot = UnityEngine.Quaternion.Euler(30f, 60f, 0f);
        go.transform.rotation = rot;
        go.transform.position = new UnityEngine.Vector3(0f, 0.6f, 4f) - rot * UnityEngine.Vector3.forward * 60f;
        if (go.GetComponent<UnityEngine.Rendering.Universal.UniversalAdditionalCameraData>() == null)
            go.AddComponent<UnityEngine.Rendering.Universal.UniversalAdditionalCameraData>();
        return c;
    }

    public static UnityEngine.Camera FindCam(string name)
    {
        var cams = UnityEngine.Object.FindObjectsByType<UnityEngine.Camera>(
            UnityEngine.FindObjectsInactive.Exclude, UnityEngine.FindObjectsSortMode.None);
        for (int i = 0; i < cams.Length; i++) if (cams[i].name == name) return cams[i];
        for (int i = 0; i < cams.Length; i++) if (cams[i].name.StartsWith("__WL")) continue; else return cams[i];
        return cams.Length > 0 ? cams[0] : null;
    }

    public static void Shot(UnityEngine.Camera cam, string path)
    {
        if (cam == null) return;
        System.IO.Directory.CreateDirectory(System.IO.Path.GetDirectoryName(path));
        var rt = new UnityEngine.RenderTexture(W, H, 24, UnityEngine.RenderTextureFormat.ARGB32, UnityEngine.RenderTextureReadWrite.sRGB);
        rt.antiAliasing = 1; rt.Create();
        var prevT = cam.targetTexture; var prevA = UnityEngine.RenderTexture.active;
        cam.targetTexture = rt;
        cam.Render();
        UnityEngine.RenderTexture.active = rt;
        var tex = new UnityEngine.Texture2D(W, H, UnityEngine.TextureFormat.RGB24, false);
        tex.ReadPixels(new UnityEngine.Rect(0, 0, W, H), 0, 0);
        tex.Apply();
        System.IO.File.WriteAllBytes(path, UnityEngine.ImageConversion.EncodeToPNG(tex));
        UnityEngine.RenderTexture.active = prevA;
        cam.targetTexture = prevT;
        UnityEngine.Object.DestroyImmediate(tex);
        rt.Release(); UnityEngine.Object.DestroyImmediate(rt);
    }
}