using System;
using System.Collections.Generic;
using System.Linq;
using AnimatorAsCode.V1;
using UnityEngine;
using VRC.SDK3.Dynamics.Constraint.Components;

namespace gay.lilyy.SoldAvatarBootstrap
{
  public static class AvatarUtils
  {
    public static GameObject FindChildRecursive(GameObject parent, string name)
    {
      return FindChildRecursive(parent.transform, name)?.gameObject;
    }
    public static Transform FindChildRecursive(Transform parent, string name)
    {
      return parent.GetComponentsInChildren<Transform>(true).FirstOrDefault(t => t.gameObject.name == name);
    }
    public static Transform[] FindChildrenRecursive(Transform parent, string name)
    {
      return parent.GetComponentsInChildren<Transform>(true).Where(t => t.gameObject.name == name).ToArray();
    }

    public static AacFlClip CreateConstraintWeightClip(AvatarAssets assets, VRCParentConstraint constraint, int index, int indexCount)
    {
      return assets.aac.NewClip()
          .Animating(action =>
          {
            action.Animates(constraint, $"Sources.source{index}.Weight").WithOneFrame(1f);
            for (int i = 0; i < indexCount; i++)
            {
              if (i == index) continue;
              action.Animates(constraint, $"Sources.source{i}.Weight").WithOneFrame(0f);
            }
          });
    }

    public static AacFlClip CreateEmptyClipWithFrames(AvatarAssets assets, int frames)
    {
      if (frames == 0) return assets.emptyClip;
      var emptyGo = new GameObject();
      emptyGo.name = "_EmptyClipInstant";
      emptyGo.transform.SetParent(assets.root.transform);
      var clip = assets.aac.NewClip().Animating(action =>
      {
        action.Animates(emptyGo.transform, "m_LocalScale.z").WithFrameCountUnit(unit =>
              {
                unit.Constant(0, 0);
                unit.Constant(frames, 1);
              });
      });
      UnityEngine.Object.DestroyImmediate(emptyGo);
      return clip;
    }

    public static AacFlClip CreateEmptyClipWithSeconds(AvatarAssets assets, float seconds)
    {
      if (seconds == 0) return assets.emptyClip;
      var emptyGo = new GameObject();
      emptyGo.name = "_EmptyClipInstant";
      emptyGo.transform.SetParent(assets.root.transform);
      var clip = assets.aac.NewClip().Animating(action =>
      {
        action.Animates(emptyGo.transform, "m_LocalScale.z").WithFrameCountUnit(unit =>
              {
                unit.Constant(0, 0);
                unit.Constant(seconds, 1);
              });
      });
      UnityEngine.Object.DestroyImmediate(emptyGo);
      return clip;
    }

    public static List<SkinnedMeshRenderer> FindWithBlendshape(AvatarAssets assets, string shapeName)
    {
      var list = new List<SkinnedMeshRenderer>();
      foreach (var smr in assets.root.GetComponentsInChildren<SkinnedMeshRenderer>(true))
      {
        var mesh = smr.sharedMesh;
        if (!mesh) continue;

        int count = mesh.blendShapeCount;
        for (int i = 0; i < count; i++)
        {
          if (mesh.GetBlendShapeName(i) == shapeName)
          {
            list.Add(smr);
            break;
          }
        }
      }
      return list;
    }

    public static List<T> FindNamedComponents<T>(Transform parent, string name) where T : Component
    {
      var list = new List<T>();
      foreach (var component in parent.GetComponentsInChildren<T>(true))
      {
        if (component.gameObject.name == name)
        {
          list.Add(component);
        }
      }
      UnityEngine.Debug.Log($"Found {list.Count} {name} components");
      foreach (var component in list)
      {
        UnityEngine.Debug.Log($"Component: {component.gameObject.name}");
      }
      return list;
    }

    public static List<T> FindNamedComponents<T>(AvatarAssets assets, string name) where T : Component
    {
      return FindNamedComponents<T>(assets.root.transform, name);
    }
    public static class Dissolve
    {

      public class DissolveHooks
      {
#nullable enable
        public Action<AacFlEditClip>? TransitionAnim { get; set; }
        public Action<AacFlClip>? TransitionClip { get; set; }
        public Action<AacFlEditClip>? OffAnim { get; set; }
        public Action<AacFlClip>? OffClip { get; set; }
        public Action<AacFlEditClip>? OnAnim { get; set; }
        public Action<AacFlClip>? OnClip { get; set; }
#nullable disable
      }

      public static void CreateDissolveLayer(Transform item, string paramStr, AvatarAssets assets, bool isDefault = true, float dissolveSeconds = 1f, DissolveHooks hooks = null)
      {
        var layer = assets.aac.CreateSupportingArbitraryControllerLayer(assets.fx, paramStr);
        var param = layer.BoolParameter(paramStr);

        var mesh = item.GetComponent<SkinnedMeshRenderer>();

        var itemGo = item.gameObject;

        var offClip = assets.aac.NewClip().Toggling(itemGo, false);
        if (hooks != null && hooks.OffAnim != null) offClip.Animating(hooks.OffAnim);
        if (hooks != null && hooks.OffClip != null) hooks.OffClip(offClip);
        var onClip = assets.aac.NewClip().Toggling(itemGo, true);
        if (hooks != null && hooks.OnAnim != null) onClip.Animating(hooks.OnAnim);
        if (hooks != null && hooks.OnClip != null) hooks.OnClip(onClip);

        var off = layer.NewState("Off").WithAnimation(offClip);
        var on = layer.NewState("On").WithAnimation(onClip);

        // if (assets.isPC)
        // {
        var transitionClip = assets.aac.NewClip().Animating(anim =>
        {
          if (hooks != null && hooks.TransitionAnim != null) hooks.TransitionAnim(anim);
          anim.Animates(itemGo).WithOneFrame(1f);
          anim.Animates(mesh, "material._DissolveAlpha").WithSecondsUnit(dissolve =>
          {
            dissolve.Easing(0f, 0f);
            dissolve.Easing(dissolveSeconds, 1f);
          });
        });
        if (hooks != null && hooks.TransitionClip != null) hooks.TransitionClip(transitionClip);

        var onToOff = layer.NewState("On To Off").WithAnimation(transitionClip).WithSpeedSetTo(1);
        var offToOn = layer.NewState("Off To On").WithAnimation(transitionClip).WithSpeedSetTo(-1);

        on.TransitionsTo(onToOff).When(param.IsFalse());
        onToOff.TransitionsTo(off).AfterAnimationFinishes();
        off.TransitionsTo(offToOn).When(param.IsTrue());
        offToOn.TransitionsTo(on).AfterAnimationFinishes();
      }
      //   else
      //   {
      //     on.TransitionsTo(off).When(param.IsFalse());
      //     off.TransitionsTo(on).When(param.IsTrue());
      //   }

      //   layer.WithDefaultState(isDefault ? on : off);
      // }
    }
  }
}