#if UNITY_EDITOR
using System.IO;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;
using UnityEngine.Rendering.Universal;

public static class TestRealtimeShadowCapture
{
    const string ScenePath = "Assets/Bundles/Scenes/Town/HomeCamp/HomeCamp.unity";

    public static string Run()
    {
        var scene = EditorSceneManager.OpenScene(ScenePath, OpenSceneMode.Additive);
        try
        {
            var root = scene.GetRootGameObjects()[0];
            var sun = root.transform.Find("HomeCampSun")?.GetComponent<Light>();
            if (sun != null)
            {
                sun.lightmapBakeType = LightmapBakeType.Realtime;
                sun.shadows = LightShadows.Soft;
                sun.shadowStrength = 0.85f;
                sun.shadowBias = 0.05f;
                sun.shadowNormalBias = 0.3f;
                sun.intensity = 1.8f;
            }

            var cam = root.transform.Find("HomeCampCamera")?.GetComponent<Camera>();
            if (cam == null) return "Camera missing";

            var uacd = cam.GetComponent<UniversalAdditionalCameraData>();
            if (uacd == null) uacd = cam.gameObject.AddComponent<UniversalAdditionalCameraData>();
            uacd.renderShadows = true;

            int w = 720, h = 1280;
            var rt = new RenderTexture(w, h, 24, RenderTextureFormat.ARGB32) { name = "ShadowTestRT" };
            rt.Create();
            cam.targetTexture = rt;
            cam.Render();

            var old = RenderTexture.active;
            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 = old;

            cam.targetTexture = null;
            rt.Release();
            Object.DestroyImmediate(rt);

            string outPath = Path.Combine(Application.dataPath, "../../Tools/output/shadow_test.png");
            File.WriteAllBytes(outPath, tex.EncodeToPNG());
            Object.DestroyImmediate(tex);

            return "Rendered to " + outPath;
        }
        finally
        {
            EditorSceneManager.CloseScene(scene, true);
        }
    }
}
#endif