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

namespace ChivaXR
{
    /// <summary>
    /// 动画执行顺序
    /// </summary>
    public enum AnimationSequence
    {
        synchronization, //同步执行下一步
        waitFinished     //等待当前动画完成，执行一下状态
    }

    public enum Animation_State
    {
        initState,
        finishedState
    }

    public interface IAniState
    {
        void InitState();      //初始化状态
        void FinishedState();  //结束状态
    }
    public class AnimationDriver
    {
        /// <summary>
        /// 播放动画组
        /// </summary>
        /// <param name="aniDT_Bases"></param>
        /// <param name="finishedCallBack"></param>
        public static void PlayAniDrivers(AnimationDriverBase[] aniDrivers, Action finishedCallBack = null)
        {
            AnimationCoroutine.Instance.StartCoroutine(PlayAniDriversLinner(aniDrivers, finishedCallBack));
        }
        public static void StopAllAnimation()
        {
            AnimationCoroutine.Instance.StopAllCoroutines();
        }

        /// <summary>
        /// 线性播放动画
        /// </summary>
        /// <param name="aniDrivers"></param>
        /// <param name="finishedCallBack"></param>
        /// <returns></returns>
        private static IEnumerator PlayAniDriversLinner(AnimationDriverBase[] aniDrivers, Action finishedCallBack)
        {
            //等待一帧，防止部分冲突
            yield return new WaitForEndOfFrame();

            for (int i = 0; i < aniDrivers.Length; i++)
            {
                bool finishedCurrentAniDriver = false;
                switch (aniDrivers[i].animationSequence)
                {
                    case AnimationSequence.synchronization:
                        aniDrivers[i].StartPlay();
                        finishedCurrentAniDriver = true;
                        break;
                    case AnimationSequence.waitFinished:
                        aniDrivers[i].StartPlay(() => finishedCurrentAniDriver = true);
                        break;
                }

                while (!finishedCurrentAniDriver)
                {
                    yield return new WaitForEndOfFrame();
                }
            }

            finishedCallBack?.Invoke();
        }

        /// <summary>
        /// 设置AniDrivers状态组
        /// </summary>
        /// <param name="aniDrivers"></param>
        /// <param name="aniState"></param>
        public static void SetAniDriversState(AnimationDriverBase[] aniDrivers, Animation_State aniState)
        {
            switch (aniState)
            {
                case Animation_State.initState:
                    for (int i = aniDrivers.Length - 1; i >= 0; i--)
                    {
                        aniDrivers[i].InitState();
                    }
                    break;
                case Animation_State.finishedState:
                    for (int i = 0; i < aniDrivers.Length; i++)
                    {
                        aniDrivers[i].FinishedState();
                    }
                    break;
            }
        }
    }
}