#if UNITY_EDITOR
using System;
using System.IO;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;
using UnityEngine.SceneManagement;
using Object = UnityEngine.Object;

public static class AuditAnimalWalk
{
    const string Root = "Assets/Bundles/Characters/Animal/RockBall";
    static GameObject Spawn(string path) => Object.Instantiate(AssetDatabase.LoadAssetAtPath<GameObject>(path));
    public static string Capture()
    {
        string dir = Path.GetFullPath(Path.Combine(Application.dataPath, "../../Tools/output/rockball_walk_audit"));
        Directory.CreateDirectory(dir);
        var scene = EditorSceneManager.NewPreviewScene();
        try
        {
            var unit = Spawn(Root + "/RockBall_Rigged.prefab");
            SceneManager.MoveGameObjectToScene(unit, scene);
            var anim = unit.GetComponentInChildren<Animator>();
            anim.enabled = false;
            var clip = AssetDatabase.LoadAssetAtPath<AnimationClip>(Root + "/Clips/Walk.anim");
            var light = new GameObject("AuditLight").AddComponent<Light>();
            SceneManager.MoveGameObjectToScene(light.gameObject, scene);
            light.type = LightType.Directional;
            light.intensity = 1.5f;
            light.transform.rotation = Quaternion.Euler(45, -30, 0);
            var cam = new GameObject("AuditCamera").AddComponent<Camera>();
            SceneManager.MoveGameObjectToScene(cam.gameObject, scene);
            cam.scene = scene;
            cam.clearFlags = CameraClearFlags.SolidColor;
            cam.backgroundColor = new Color(.45f,.53f,.59f);
            cam.transform.position = new Vector3(1.1f,.75f,-1.6f);
            cam.transform.LookAt(new Vector3(0,.28f,0));
            cam.orthographic = true;
            cam.orthographicSize = .43f;
            cam.nearClipPlane = .01f;
            var rt = new RenderTexture(512,512,24);
            cam.targetTexture = rt;
            var tex = new Texture2D(512,512,TextureFormat.RGB24,false);
            var previous = RenderTexture.active;
            try
            {
                for (int i = -1; i < 4; i++)
                {
                    if (i >= 0) clip.SampleAnimation(anim.gameObject, clip.length * i / 4f);
                    cam.Render();
                    RenderTexture.active = rt;
                    tex.ReadPixels(new Rect(0,0,512,512),0,0);
                    tex.Apply();
                    File.WriteAllBytes(Path.Combine(dir, i < 0 ? "bind.png" : "walk_" + i + ".png"), tex.EncodeToPNG());
                }
            }
            finally
            {
                RenderTexture.active = previous;
                cam.targetTexture = null;
                rt.Release();
                Object.DestroyImmediate(rt);
                Object.DestroyImmediate(tex);
            }
        }
        finally { EditorSceneManager.ClosePreviewScene(scene); }
        return dir;
    }
}
#endif