#if UNITY_EDITOR
using System.IO;
using System.Linq;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;
using UnityEngine.SceneManagement;

/// <summary>Force-reimport XTerrain, punch ground lightmap contrast, recapture HomeCamp review.</summary>
public static class FixHomeCampShadowPunch
{
    const string Root = "Assets/Bundles/Scenes/Town/HomeCamp";
    const string ScenePath = Root + "/HomeCamp.unity";
    const string Review = "D:/UD/AI/AIGame/Tools/output/homecamp_review";

    public static string Run()
    {
        AssetDatabase.ImportAsset("Assets/Bundles/Shaders/XShader/XTerrain.shader", ImportAssetOptions.ForceSynchronousImport);
        AssetDatabase.ImportAsset("Assets/Bundles/Shaders/XShader/XTerrain_Base.hlsl", ImportAssetOptions.ForceSynchronousImport);

        var mat = AssetDatabase.LoadAssetAtPath<Material>(Root + "/ground_terrain.mat");
        if (!mat) return "FAIL: no ground mat";
        // Stronger than 1.45 — busy albedo still hid plaza shade after the CBUFFER fix.
        mat.SetFloat("_LightmapContrast", 1.85f);
        EditorUtility.SetDirty(mat);
        AssetDatabase.SaveAssetIfDirty(mat);

        var scene = EditorSceneManager.OpenScene(ScenePath, OpenSceneMode.Single);
        var root = scene.GetRootGameObjects().Single(g => g.name == "HomeCamp");
        var ground = root.transform.Find("Ground")?.GetComponentInChildren<MeshRenderer>();
        var live = ground ? ground.sharedMaterial.GetFloat("_LightmapContrast") : -1f;

        // Warm shader variants so Capture does not draw the first frame without LIGHTMAP_ON.
        ShaderUtil.allowAsyncCompilation = false;
        var cam = root.GetComponentInChildren<Camera>();
        Capture(cam, Review + "/homecamp_portrait.png", 1080, 1920);
        Capture(cam, Review + "/homecamp_tall.png", 1080, 2400);

        return "contrast=" + live.ToString("F2") + " groundLM=" + (ground ? ground.lightmapIndex.ToString() : "?")
            + " maps=" + LightmapSettings.lightmaps.Length;
    }

    static void Capture(Camera camera, string file, int w, int h)
    {
        Directory.CreateDirectory(Path.GetDirectoryName(file));
        var rt = RenderTexture.GetTemporary(w, h, 24, RenderTextureFormat.ARGB32);
        var old = RenderTexture.active; var oldT = camera.targetTexture; var oldA = camera.aspect;
        var tex = new Texture2D(w, h, TextureFormat.RGB24, false);
        try
        {
            camera.aspect = (float)w / h; camera.targetTexture = rt; RenderTexture.active = rt;
            camera.Render(); camera.Render();
            tex.ReadPixels(new Rect(0, 0, w, h), 0, 0); tex.Apply();
            File.WriteAllBytes(file, tex.EncodeToPNG());
        }
        finally
        {
            camera.targetTexture = oldT; camera.aspect = oldA; RenderTexture.active = old;
            RenderTexture.ReleaseTemporary(rt); Object.DestroyImmediate(tex);
        }
    }
}
#endif