using NUnit.Framework;
using UnityEditor;
using UnityEngine;

public sealed class HumanoidAnimationFbxImportSettingsTests
{
    [Test]
    public void ShouldProcessActorAnimationFbx()
    {
        Assert.That(
            HumanoidAnimationFbxImportSettings.ShouldProcessAsset(
                "Assets/Game/Art/Actor/Controller/Class/Caster/Standing Walk Forward.fbx"),
            Is.True);
    }

    [Test]
    public void ShouldNotProcessCityboySourceAvatar()
    {
        Assert.That(
            HumanoidAnimationFbxImportSettings.ShouldProcessAsset(
                HumanoidAnimationFbxImportSettings.CityboyAvatarPath),
            Is.False);
    }

    [Test]
    public void ShouldProcessActorFbxEvenWhenCustomClipAnimationsAreEmpty()
    {
        Assert.That(
            HumanoidAnimationFbxImportSettings.ShouldProcessAsset(
                "Assets/Game/Art/Actor/Controller/Class/Caster/Standing 2H Magic Area Attack 02.fbx"),
            Is.True);
    }

    [Test]
    public void ShouldNotProcessFbxOutsideActorFolder()
    {
        Assert.That(
            HumanoidAnimationFbxImportSettings.ShouldProcessAsset(
                "Assets/Res/cityboy_uv2/cityboy_uv2.fbx"),
            Is.False);
    }

    [Test]
    public void ShouldNotUseCityboyAvatarWhenFbxDoesNotContainCityboyHipBone()
    {
        Assert.That(
            HumanoidAnimationFbxImportSettings.ShouldUseCityboyAvatar(
                new byte[] { 72, 105, 112, 115 }),
            Is.False);
    }

    [Test]
    public void ShouldUseCityboyAvatarWhenFbxContainsCityboyHipBone()
    {
        Assert.That(
            HumanoidAnimationFbxImportSettings.ShouldUseCityboyAvatar(
                System.Text.Encoding.ASCII.GetBytes("Model::mixamorig:Hips")),
            Is.True);
    }

    [Test]
    public void ApplyClipSettingsUsesOriginalRotationAndBakesRotationAndY()
    {
        var clip = new ModelImporterClipAnimation
        {
            lockRootRotation = false,
            keepOriginalOrientation = false,
            lockRootHeightY = false
        };

        ModelImporterClipAnimation updated = HumanoidAnimationFbxImportSettings.ApplyClipSettings(clip);

        Assert.That(updated.lockRootRotation, Is.True);
        Assert.That(updated.keepOriginalOrientation, Is.True);
        Assert.That(updated.lockRootHeightY, Is.True);
    }

    [Test]
    public void ApplyClipSettingsUpdatesEveryClipBeforeWriteback()
    {
        var clips = new[]
        {
            new ModelImporterClipAnimation { name = "Attack01" },
            new ModelImporterClipAnimation { name = "Attack02" }
        };

        ModelImporterClipAnimation[] updated = HumanoidAnimationFbxImportSettings.ApplyClipSettings(clips);

        Assert.That(updated, Has.Length.EqualTo(2));
        Assert.That(updated[0].lockRootRotation, Is.True);
        Assert.That(updated[0].keepOriginalOrientation, Is.True);
        Assert.That(updated[0].lockRootHeightY, Is.True);
        Assert.That(updated[1].lockRootRotation, Is.True);
        Assert.That(updated[1].keepOriginalOrientation, Is.True);
        Assert.That(updated[1].lockRootHeightY, Is.True);
    }

    [Test]
    public void CreateClipAnimationFromTakeInfoUsesTakeFramesAndAppliesRootSettings()
    {
        var takeInfo = new TakeInfo
        {
            name = "mixamo.com",
            defaultClipName = "Standing 2H Magic Area Attack 02",
            startTime = 0f,
            stopTime = 4.5f,
            sampleRate = 30f
        };

        ModelImporterClipAnimation clip = HumanoidAnimationFbxImportSettings.CreateClipAnimation(takeInfo);

        Assert.That(clip.name, Is.EqualTo("Standing 2H Magic Area Attack 02"));
        Assert.That(clip.takeName, Is.EqualTo("mixamo.com"));
        Assert.That(clip.firstFrame, Is.EqualTo(0f));
        Assert.That(clip.lastFrame, Is.EqualTo(135f));
        Assert.That(clip.lockRootRotation, Is.True);
        Assert.That(clip.keepOriginalOrientation, Is.True);
        Assert.That(clip.lockRootHeightY, Is.True);
    }

    [Test]
    public void CreateClipAnimationFromImportedClipUsesClipNameAndLength()
    {
        var importedClip = new AnimationClip
        {
            name = "Standing 2H Magic Area Attack 02",
            frameRate = 30f
        };
        importedClip.SetCurve(
            string.Empty,
            typeof(Transform),
            "m_LocalPosition.x",
            new AnimationCurve(new Keyframe(0f, 0f), new Keyframe(4.5f, 0f)));

        ModelImporterClipAnimation clip = HumanoidAnimationFbxImportSettings.CreateClipAnimation(importedClip);

        Assert.That(clip.name, Is.EqualTo("Standing 2H Magic Area Attack 02"));
        Assert.That(clip.takeName, Is.EqualTo("Standing 2H Magic Area Attack 02"));
        Assert.That(clip.firstFrame, Is.EqualTo(0f));
        Assert.That(clip.lastFrame, Is.EqualTo(135f));
        Assert.That(clip.lockRootRotation, Is.True);
        Assert.That(clip.keepOriginalOrientation, Is.True);
        Assert.That(clip.lockRootHeightY, Is.True);
    }
}