#if UNITY_EDITOR
using System.Linq;
using System.Text;
using UnityEditor;
using UnityEngine;

public static class MeasureClipMotion
{
    public static string Run()
    {
        var sb = new StringBuilder();
        foreach (var name in new[] { "Idle", "Walk", "Attack" })
        {
            var clip = AssetDatabase.LoadAssetAtPath<AnimationClip>($"Assets/Bundles/Characters/Animal/RockBall/Clips/{name}.anim");
            if (clip == null) { sb.AppendLine(name + " missing"); continue; }
            var binds = AnimationUtility.GetCurveBindings(clip);
            float maxRange = 0f;
            string maxBind = "";
            int moving = 0;
            foreach (var b in binds)
            {
                var c = AnimationUtility.GetEditorCurve(clip, b);
                if (c == null || c.keys.Length == 0) continue;
                float mn = float.MaxValue, mx = float.MinValue;
                foreach (var k in c.keys) { if (k.value < mn) mn = k.value; if (k.value > mx) mx = k.value; }
                // also sample densely
                for (float t = 0; t <= clip.length; t += clip.length / 20f)
                {
                    float v = c.Evaluate(t);
                    if (v < mn) mn = v; if (v > mx) mx = v;
                }
                float range = mx - mn;
                if (range > 1e-4f) moving++;
                if (range > maxRange) { maxRange = range; maxBind = b.path + "/" + b.propertyName; }
            }
            sb.AppendLine($"{name}: len={clip.length:F3} binds={binds.Length} movingCurves={moving} maxRange={maxRange:F5} at {maxBind}");
        }

        // Compare bone rest vs sampled pose at mid Walk on instantiated prefab
        var prefab = AssetDatabase.LoadAssetAtPath<GameObject>("Assets/Bundles/Characters/Animal/RockBall/RockBall_Rigged.prefab");
        var go = (GameObject)PrefabUtility.InstantiatePrefab(prefab);
        var anim = go.GetComponentInChildren<Animator>();
        anim.SetInteger("Motion", 1);
        anim.Update(0f);
        // record bone rotations at t=0 and after scrubbing
        var bones = go.GetComponentsInChildren<Transform>().Where(t => t.name.StartsWith("bone_")).ToArray();
        var r0 = bones.Select(b => b.localRotation).ToArray();
        for (int i = 0; i < 30; i++) anim.Update(0.05f);
        float maxAng = 0f;
        string which = "";
        for (int i = 0; i < bones.Length; i++)
        {
            float ang = Quaternion.Angle(r0[i], bones[i].localRotation);
            if (ang > maxAng) { maxAng = ang; which = bones[i].name; }
        }
        sb.AppendLine($"prefab Walk scrub 1.5s maxBoneDeltaDeg={maxAng:F2} bone={which}");
        Object.DestroyImmediate(go);
        return sb.ToString();
    }
}
#endif