using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

// ver 1.2
// (c) 2019 gatosyocora

namespace VRCDeveloperTool
{

    public static class HumanoidPoseResetter
    {

        private static HumanBodyBones[] boneList
        = {
            HumanBodyBones.Hips,
            HumanBodyBones.LeftUpperArm, HumanBodyBones.LeftLowerArm,
            HumanBodyBones.RightUpperArm, HumanBodyBones.RightLowerArm,
            HumanBodyBones.LeftUpperLeg, HumanBodyBones.LeftLowerLeg,
            HumanBodyBones.RightUpperLeg,HumanBodyBones.RightLowerLeg,
            /*HumanBodyBones.LeftThumbDistal, */HumanBodyBones.LeftThumbIntermediate, HumanBodyBones.LeftThumbProximal,
            HumanBodyBones.LeftIndexDistal, HumanBodyBones.LeftIndexIntermediate, HumanBodyBones.LeftIndexProximal,
            HumanBodyBones.LeftMiddleDistal, HumanBodyBones.LeftMiddleIntermediate, HumanBodyBones.LeftMiddleProximal,
            HumanBodyBones.LeftRingDistal, HumanBodyBones.LeftRingIntermediate, HumanBodyBones.LeftRingProximal,
            HumanBodyBones.LeftLittleDistal, HumanBodyBones.LeftLittleIntermediate, HumanBodyBones.LeftLittleProximal,
            /*HumanBodyBones.RightThumbDistal, */HumanBodyBones.RightThumbIntermediate, HumanBodyBones.RightThumbProximal,
            HumanBodyBones.RightIndexDistal, HumanBodyBones.RightIndexIntermediate, HumanBodyBones.RightIndexProximal,
            HumanBodyBones.RightMiddleDistal, HumanBodyBones.RightMiddleIntermediate, HumanBodyBones.RightMiddleProximal,
            HumanBodyBones.RightRingDistal, HumanBodyBones.RightRingIntermediate, HumanBodyBones.RightRingProximal,
            HumanBodyBones.RightLittleDistal, HumanBodyBones.RightLittleIntermediate, HumanBodyBones.RightLittleProximal
        };

        public static void ResetPose(GameObject obj)
        {
            /* 対象オブジェクトのポーズを取得 */
            Animator animator = obj.GetComponent<Animator>();
            if (animator == null) return;

            var sourcePath = AssetDatabase.GetAssetPath(animator.avatar);

            var sourceObj = AssetDatabase.LoadAssetAtPath(sourcePath, typeof(GameObject)) as GameObject;

            var boneTrans = new Transform[boneList.Length];

            for (int i = 0; i < boneList.Length; i++)
            {
                boneTrans[i] = animator.GetBoneTransform(boneList[i]);
            }

            /* 対象オブジェクトの親Prefabのポーズを取得 */
            Animator sourceAnim = sourceObj.GetComponent<Animator>();
            if (sourceAnim == null) return;

            var boneTrans_p = new Transform[boneList.Length];

            for (int i = 0; i < boneList.Length; i++)
                boneTrans_p[i] = sourceAnim.GetBoneTransform(boneList[i]);


            for (int j = 0; j < boneList.Length; j++)
            {
                var trans = boneTrans[j];
                var prefabTrans = boneTrans_p[j];

                if (trans == null)
                {
                    Debug.Log("[Transform not found]:" + j + ":" + boneList[j]);
                    continue;
                }

                Undo.RecordObject(trans, "Change Transform " + trans.name);


                trans.localPosition = prefabTrans.localPosition;
                trans.localRotation = prefabTrans.localRotation;
            }
        }
    }
}