// WL-816h — ② 「쨍한 파란 하늘」의 정체 + 섬에서 나간 뒤 하늘 오염 실측 (지금 상태 = 고치기 전)
using System.Collections;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.Universal;
using UnityEngine.SceneManagement;

public static class WL816h_Probe2
{
    public const string Dir = "Screenshots_WL/WL816h/";
    public const int W = 1080, H = 1920;

    public static void Start()
    {
        var go = GameObject.Find("~WL816hProbe2");
        if (go != null) Object.DestroyImmediate(go);
        go = new GameObject("~WL816hProbe2");
        go.AddComponent<WL816h_Probe2Runner>();
        Debug.Log("[816h p2] 러너 시작");
    }

    public static string SkyLine()
    {
        return "amb=" + RenderSettings.ambientMode + " light=" + F(RenderSettings.ambientLight)
             + " skySrc=" + F(RenderSettings.ambientSkyColor) + " I=" + RenderSettings.ambientIntensity
             + " skybox=" + (RenderSettings.skybox ? RenderSettings.skybox.name : "없음")
             + " fog=" + RenderSettings.fog + " refl=" + RenderSettings.defaultReflectionMode + "/" + RenderSettings.reflectionIntensity
             + " sun=" + (RenderSettings.sun ? RenderSettings.sun.name : "없음");
    }
    public static string F(Color c) { return "(" + c.r.ToString("F3") + "," + c.g.ToString("F3") + "," + c.b.ToString("F3") + ")"; }

    public static Camera SkyCam()
    {
        var go = GameObject.Find("~WL816hSkyCam2");
        if (go == null) { go = new GameObject("~WL816hSkyCam2"); go.hideFlags = HideFlags.DontSave; }
        var c = go.GetComponent<Camera>(); if (c == null) c = go.AddComponent<Camera>();
        c.orthographic = false; c.fieldOfView = 50f; c.nearClipPlane = 0.3f; c.farClipPlane = 2000f;
        c.clearFlags = CameraClearFlags.Skybox; c.cullingMask = ~0; c.depth = -100f;
        go.transform.position = new Vector3(0f, 40f, 0f);
        go.transform.rotation = Quaternion.Euler(-16f, 30f, 0f);
        if (go.GetComponent<UniversalAdditionalCameraData>() == null) go.AddComponent<UniversalAdditionalCameraData>();
        return c;
    }

    public static string Shot(Camera cam, string path)
    {
        if (cam == null) return "카메라 없음";
        System.IO.Directory.CreateDirectory(System.IO.Path.GetDirectoryName(path));
        var rt = new RenderTexture(W, H, 24, RenderTextureFormat.ARGB32, RenderTextureReadWrite.sRGB);
        rt.antiAliasing = 1; rt.Create();
        var prevT = cam.targetTexture; var prevA = RenderTexture.active;
        cam.targetTexture = rt; cam.Render(); RenderTexture.active = rt;
        var tex = new Texture2D(W, H, TextureFormat.RGB24, false);
        tex.ReadPixels(new Rect(0, 0, W, H), 0, 0); tex.Apply();
        RenderTexture.active = prevA; cam.targetTexture = prevT;
        System.IO.File.WriteAllBytes(path, tex.EncodeToPNG());
        // 위 10 % · 아래 10 % 평균
        string s = "";
        s += "상단10%=" + Band(tex, 0.90f, 1.00f) + " 하단10%=" + Band(tex, 0.00f, 0.10f);
        Object.DestroyImmediate(tex); rt.Release(); Object.DestroyImmediate(rt);
        return s + " → " + path;
    }

    static string Band(Texture2D t, float y0, float y1)
    {
        int a = Mathf.RoundToInt(y0 * (t.height - 1)), b = Mathf.RoundToInt(y1 * (t.height - 1));
        long r = 0, g = 0, bl = 0; int n = 0;
        var px = t.GetPixels32();
        for (int y = a; y < b; y += 4)
            for (int x = 0; x < t.width; x += 4) { var c = px[y * t.width + x]; r += c.r; g += c.g; bl += c.b; n++; }
        if (n == 0) return "-";
        return "#" + ((int)(r / n)).ToString("X2") + ((int)(g / n)).ToString("X2") + ((int)(bl / n)).ToString("X2");
    }
}

public class WL816h_Probe2Runner : MonoBehaviour
{
    static System.Text.StringBuilder sb;
    static void L(string s) { sb.AppendLine(s); }
    void Start() { StartCoroutine(Co()); }

    IEnumerator Co()
    {
        sb = new System.Text.StringBuilder();
        L("=== ② 「파란 하늘」의 정체 + 섬 나간 뒤 오염 (고치기 전) ===");

        Camera live = null;
        foreach (var c in Object.FindObjectsByType<Camera>(FindObjectsInactive.Exclude, FindObjectsSortMode.None))
        {
            if (!c.gameObject.activeInHierarchy || !c.enabled || c.targetTexture != null) continue;
            if (live == null || c.depth > live.depth) live = c;
        }
        L("보이는 카메라 = " + (live == null ? "없음" : live.name + " fov=" + live.fieldOfView
            + " euler=" + live.transform.eulerAngles.ToString("F0") + " pos=" + live.transform.position.ToString("F1")));

        Renderer water = null;
        foreach (var r in Object.FindObjectsByType<Renderer>(FindObjectsInactive.Exclude, FindObjectsSortMode.None))
            if (r != null && r.gameObject.scene.name == "Level01" && r.name == "Water") water = r;
        L("물 렌더러 = " + (water == null ? "없음" : water.name + " mat=" + water.sharedMaterial.name
            + " shader=" + water.sharedMaterial.shader.name));

        L("물 ON  = " + WL816h_Probe2.Shot(live, WL816h_Probe2.Dir + "a1_water_on.png"));
        if (water != null) water.enabled = false;
        yield return null;
        L("물 OFF = " + WL816h_Probe2.Shot(live, WL816h_Probe2.Dir + "a2_water_off.png"));
        if (water != null) water.enabled = true;
        yield return null;

        L("");
        L("섬 내리기 전 : " + WL816h_Probe2.SkyLine());
        var op = SceneManager.UnloadSceneAsync("Level01");
        while (op != null && !op.isDone) yield return null;
        yield return new WaitForSeconds(1.5f);
        L("섬 내린 뒤   : " + WL816h_Probe2.SkyLine());
        L("InGame 원본  : amb=Skybox light=(0.212,0.227,0.259) skybox=Default-Skybox fog=False refl=Skybox/1 sun=없음  (씬 파일 실측)");
        L("🔴 오염 = " + Diff());

        var op2 = SceneManager.LoadSceneAsync("Map_C01", LoadSceneMode.Additive);
        while (op2 != null && !op2.isDone) yield return null;
        yield return new WaitForSeconds(1.5f);
        L("");
        L("전투 맵(Map_C01) 올린 뒤 : " + WL816h_Probe2.SkyLine());
        L("🔴 오염 = " + Diff());
        L("전투맵 하늘 = " + WL816h_Probe2.Shot(WL816h_Probe2.SkyCam(), WL816h_Probe2.Dir + "f0_before_battle_sky.png"));

        System.IO.File.WriteAllText("AgentScripts/WL816h_PROBE2.txt", sb.ToString());
        Debug.Log("[816h p2 완료]\n" + sb);
    }

    static string Diff()
    {
        string d = "";
        if (RenderSettings.ambientMode != AmbientMode.Skybox) d += "ambientMode=" + RenderSettings.ambientMode + "(원본 Skybox) · ";
        var a = RenderSettings.ambientLight;
        if (Mathf.Abs(a.r - 0.212f) > 0.004f || Mathf.Abs(a.g - 0.227f) > 0.004f || Mathf.Abs(a.b - 0.259f) > 0.004f)
            d += "ambientLight=" + WL816h_Probe2.F(a) + "(원본 (0.212,0.227,0.259)) · ";
        if (RenderSettings.fog) d += "fog on · ";
        if (RenderSettings.sun != null) d += "sun=" + RenderSettings.sun.name + "(원본 없음) · ";
        if (RenderSettings.skybox == null || RenderSettings.skybox.name != "Default-Skybox")
            d += "skybox=" + (RenderSettings.skybox ? RenderSettings.skybox.name : "없음") + " · ";
        return d.Length == 0 ? "없음(오염 0)" : d;
    }
}