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

// ver 1.2
// © 2018-9-24 gatosyocora

namespace VRCDeveloperTool
{

    public class HandPoseAdder : Editor
    {

        private static string ORIGIN_ANIM_PATH = "Assets/VRCDeveloperTool/Editor/HandPoseAdder/Animations/"; // コピー元となるAnimationファイルが置いてあるディレクトリのパス

        private static readonly string[] HANDNAMES ={"LeftHand.Index", "LeftHand.Little", "LeftHand.Middle", "LeftHand.Ring", "LeftHand.Thumb",
                                                 "RightHand.Index", "RightHand.Little", "RightHand.Middle", "RightHand.Ring", "RightHand.Thumb"};

        private static readonly string[] HANDPOSTYPES = { "1 Stretched", "2 Stretched", "3 Stretched", "Spread" };

        // None
        [MenuItem("CONTEXT/Motion/Clear Hand pose", false, 0)]
        private static void ClearHandAnimationKeys(MenuCommand command)
        {
            ClearHandPoseAnimationKeys(command);
        }

        // FINGER POINT
        [MenuItem("CONTEXT/Motion/Add Hand pose 'FINGER POINT'", false, 1)]
        private static void AddFPAnimationKeys(MenuCommand command)
        {
            AddHandPoseAnimationKeys(command, ORIGIN_ANIM_PATH + "FingerPoint.anim");
        }

        // FIST
        [MenuItem("CONTEXT/Motion/Add Hand pose 'FIST'", false, 2)]
        private static void AddFISTAnimationKeys(MenuCommand command)
        {
            AddHandPoseAnimationKeys(command, ORIGIN_ANIM_PATH + "Fist.anim");
        }

        // HAND GUN
        [MenuItem("CONTEXT/Motion/Add Hand pose 'HAND GUN'", false, 3)]
        private static void AddHGAnimationKeys(MenuCommand command)
        {
            AddHandPoseAnimationKeys(command, ORIGIN_ANIM_PATH + "HandGun.anim");
        }

        // HAND OPEN
        [MenuItem("CONTEXT/Motion/Add Hand pose 'HAND OPEN'", false, 4)]
        private static void AddHOAnimationKeys(MenuCommand command)
        {
            AddHandPoseAnimationKeys(command, ORIGIN_ANIM_PATH + "HandOpen.anim");
        }

        // ROCKN ROLL
        [MenuItem("CONTEXT/Motion/Add Hand pose 'ROCK N ROLL'", false, 5)]
        private static void AddRRAnimationKeys(MenuCommand command)
        {
            AddHandPoseAnimationKeys(command, ORIGIN_ANIM_PATH + "RocknRoll.anim");
        }

        // THUMBS UP
        [MenuItem("CONTEXT/Motion/Add Hand pose 'THUMBS UP'", false, 6)]
        private static void AddTUAnimationKeys(MenuCommand command)
        {
            AddHandPoseAnimationKeys(command, ORIGIN_ANIM_PATH + "ThumbsUp.anim");
        }


        // VICTORY
        [MenuItem("CONTEXT/Motion/Add Hand pose 'VICTORY'", false, 7)]
        private static void AddVICTORYAnimationKeys(MenuCommand command)
        {
            AddHandPoseAnimationKeys(command, ORIGIN_ANIM_PATH + "Victory.anim");
        }

        // 特定のAnimationファイルのAnimationキー全てをコピーする
        public static void AddHandPoseAnimationKeys(MenuCommand command, string originPath)
        {
            AnimationClip targetClip = command.context as AnimationClip;

            AnimationClip originClip = (AnimationClip)AssetDatabase.LoadAssetAtPath(originPath, typeof(AnimationClip));         // originPathよりAnimationClipの読み込み

            CopyAnimationKeys(originClip, targetClip);
        }

        // originClipに設定されたAnimationKeyをすべてtargetclipにコピーする
        public static void CopyAnimationKeys(AnimationClip originClip, AnimationClip targetClip)
        {
            foreach (var binding in AnimationUtility.GetCurveBindings(originClip).ToArray())
            {
                // AnimationClipよりAnimationCurveを取得
                AnimationCurve curve = AnimationUtility.GetEditorCurve(originClip, binding);
                // AnimationClipにキーリダクションを行ったAnimationCurveを設定
                AnimationUtility.SetEditorCurve(targetClip, binding, curve);
            }
        }

        /// <summary>
        /// 手の形に関するAnimationキーを全て削除する
        /// </summary>
        /// <param name="command"></param>
        public static void ClearHandPoseAnimationKeys(MenuCommand command)
        {
            var targetClip = command.context as AnimationClip;

            foreach (var handname in HANDNAMES)
            {
                foreach (var handpostype in HANDPOSTYPES)
                {
                    var binding = new EditorCurveBinding();
                    binding.path = "";
                    binding.type = typeof(Animator);
                    binding.propertyName = handname + "." + handpostype;

                    // キーを削除する
                    AnimationUtility.SetEditorCurve(targetClip, binding, null);
                }
            }

        }

    }

}