// WL785_Tune.cs — #785 리본 룩 실시간 튜닝 (Play 중 사용 · 에셋 인스턴스 메모리 수정)
//   unity command run_script --file AgentScripts/WL785_Tune.cs --entry WL785_Tune.Set \
//        --args '[intensity, headAlpha, midAlpha, edgeSoft, tailSoft, life, hold]'
//   unity command run_script --file AgentScripts/WL785_Tune.cs --entry WL785_Tune.Show
//
// 왜 별도 스크립트인가: WL785_Setup 은 Play 중이면 중단하도록 막아 뒀다(에셋 집행용).
// 이건 "보면서 값을 고르는" 용도라 Play 중에만 의미가 있다. 고른 값은 Play 를 멈춘 뒤
// WL785_Setup.ApplySettings 의 기본값에 반영해 디스크에 굽는다(SOT 는 에셋 · C45).
using System.Text;
using UnityEditor;
using UnityEngine;

public static class WL785_Tune
{
    const string MatPath = "Assets/WL/Combat/Materials/M_WL_BladeRibbon.mat";

    public static object Set(float intensity, float headAlpha, float midAlpha,
                             float edgeSoft, float tailSoft, float life, float hold)
    {
        var s = WL.Combat.SlashTrailSettings.Instance;
        if (s == null) return "SlashTrailSettings.Instance null (Play 중이어야 한다)";

        s.colorIntensity = intensity;
        s.fadeSeconds = life;
        s.fadeHoldRatio = hold;

        var g = new Gradient();
        g.SetKeys(
            new[]
            {
                new GradientColorKey(new Color(0.42f, 0.16f, 0.90f), 0.00f),
                new GradientColorKey(new Color(0.20f, 0.45f, 1.00f), 0.32f),
                new GradientColorKey(new Color(1.00f, 0.52f, 0.14f), 0.72f),
                new GradientColorKey(new Color(1.00f, 0.85f, 0.42f), 1.00f),
            },
            new[]
            {
                new GradientAlphaKey(0.00f, 0.00f),
                new GradientAlphaKey(midAlpha, 0.28f),
                new GradientAlphaKey(headAlpha, 0.70f),
                new GradientAlphaKey(headAlpha, 1.00f),
            });
        s.gradientAlongSwing = g;

        var mat = s.materialAdditive != null ? s.materialAdditive : AssetDatabase.LoadAssetAtPath<Material>(MatPath);
        if (mat != null)
        {
            mat.SetFloat("_EdgeSoftness", edgeSoft);
            mat.SetFloat("_TailSoftness", tailSoft);
        }
        return Show();
    }

    /// <summary>
    /// 색 축 비중과 알파 곡선을 함께 조정한다.
    /// bladeW 가 0.5 면 잔상축(꼬리 보라)과 칼날축(안쪽 주황)을 반반 섞는데,
    /// 보라와 노랑을 반반 섞으면 회색이 된다(실측 — 리본이 흰색으로 보이던 원인).
    /// 그래서 칼날축을 주(0.75~1.0)로 두고 잔상축은 꼬리 색조만 얹는 쪽이 참고 이미지에 가깝다.
    /// </summary>
    public static object Look(float intensity, float bladeW, float aMid, float aHead,
                              float edgeSoft, float tailSoft, float hold)
    {
        var s = WL.Combat.SlashTrailSettings.Instance;
        if (s == null) return "settings null";
        s.colorIntensity = intensity;
        s.bladeGradientWeight = bladeW;
        s.fadeHoldRatio = hold;

        var g = new Gradient();
        g.SetKeys(
            new[]
            {
                new GradientColorKey(new Color(0.42f, 0.16f, 0.90f), 0.00f),
                new GradientColorKey(new Color(0.20f, 0.45f, 1.00f), 0.32f),
                new GradientColorKey(new Color(1.00f, 0.52f, 0.14f), 0.72f),
                new GradientColorKey(new Color(1.00f, 0.85f, 0.42f), 1.00f),
            },
            new[]
            {
                new GradientAlphaKey(0.00f, 0.00f),
                new GradientAlphaKey(aMid, 0.18f),
                new GradientAlphaKey(aHead, 0.55f),
                new GradientAlphaKey(aHead, 1.00f),
            });
        s.gradientAlongSwing = g;

        var mat = s.materialAdditive;
        if (mat != null)
        {
            mat.SetFloat("_EdgeSoftness", edgeSoft);
            mat.SetFloat("_TailSoftness", tailSoft);
            mat.SetFloat("_Intensity", 1f);
        }
        return Show();
    }

    /// <summary>블렌드 모드만 바꾼다. 1/10 = 프리멀티 알파, 1/1 = 순수 가산.</summary>
    public static object Blend(int src, int dst)
    {
        var s = WL.Combat.SlashTrailSettings.Instance;
        var mat = s != null && s.materialAdditive != null ? s.materialAdditive : AssetDatabase.LoadAssetAtPath<Material>(MatPath);
        if (mat == null) return "material null";
        mat.SetFloat("_SrcBlend", src);
        mat.SetFloat("_DstBlend", dst);
        return "blend src=" + src + " dst=" + dst;
    }

    public static object Show()
    {
        var s = WL.Combat.SlashTrailSettings.Instance;
        if (s == null) return "settings null";
        var mat = s.materialAdditive;
        var sb = new StringBuilder();
        sb.AppendLine("intensity=" + s.colorIntensity + " life=" + s.fadeSeconds + " hold=" + s.fadeHoldRatio +
                      " bladeW=" + s.bladeGradientWeight + " width=" + s.widthScale + " tailW=" + s.tailWidthRatio);
        if (mat != null)
            sb.AppendLine("mat edge=" + mat.GetFloat("_EdgeSoftness") + " head=" + mat.GetFloat("_HeadSoftness") +
                          " tail=" + mat.GetFloat("_TailSoftness") + " intens=" + mat.GetFloat("_Intensity") +
                          " src=" + mat.GetFloat("_SrcBlend") + " dst=" + mat.GetFloat("_DstBlend"));
        for (float t = 0f; t <= 1.001f; t += 0.25f)
            sb.AppendLine("  swing t=" + t.ToString("0.00") + " -> " + s.gradientAlongSwing.Evaluate(t));
        return sb.ToString();
    }
}