namespace ChivaXR
{
    using UnityEngine;
    using Sirenix.OdinInspector;

    /// <summary>
    /// 步骤跳转状态（步骤跳转时依据当前ProcessElement物体查找接口组件并执行）
    /// </summary>
    public interface IProcessState
    {
        /// <summary>
        /// 步骤初始状态
        /// </summary>
        /// <param name="enterCurrent">true：进入当前状态--false：向前跳步</param>
        void EnterState(bool enterCurrent);
        /// <summary>
        /// 步骤结束状态
        /// </summary>
        void ExitState();

        void HalfQuit();
    }
    /// <summary>
    /// 步骤组件
    /// </summary>
    public class ProcessElement : MonoBehaviour
    {
        /// <summary>
        /// 当前步骤StepID
        /// </summary>
        public int stepID;

        /// <summary>
        /// 当前步骤是否激活
        /// </summary>
        public bool active;

        /// <summary>
        /// 当前步骤完成情况
        /// </summary> 
        public bool finished;

        /// <summary>
        /// 操作前预处理逻辑
        /// </summary>
        [HideInInspector]
        public PreprocessBase preprocess;

        /// <summary>
        /// 操作类基类
        /// </summary>
        public ProcessBase processBase;

        public System.Action<ProcessElement> processElementEnterHandler;

        public System.Action<ProcessElement> processElementExitHandle;

        /// <summary>
        /// 流程使用状态
        /// </summary>
        /// <param name="state"></param>
        public void SetProcessActive(bool state)
        {
            active = state;
        }

        /// <summary>
        /// 进入当前步骤
        /// </summary>
        public void Enter()
        {
            SetProcessActive(true);
            SetEnterState(true);
            Debug.Log("进入" + stepID + "步骤");
            EnterProProcess();
        }

        public void EnterProProcess()
        {
            if (preprocess == null)
            {
                ProProcessFinished();
            }
            else
            {
                preprocess.Enter(this);
            }
        }

        /// <summary>
        /// 预处理结束进度操作流程
        /// </summary>
        public void ProProcessFinished()
        {
            ProcessManagement.Instance.preprocessFnishedEvent?.Invoke(this);
            if (processBase == null)
            {
                Debug.LogError("缺少" + stepID + "步 ProcedureBase----" + this.name);
                Exit();
                return;
            }
            processBase.Enter(this);
            processElementEnterHandler?.Invoke(this);
        }

        /// <summary>
        /// 离开当前步骤
        /// </summary>
        public void Exit()
        {
            SetProcessActive(false);
            SetExitState();
            finished = true;
            processElementExitHandle?.Invoke(this);
            ProcessManagement.Instance.EnterNextProcess();
        }

        /// <summary>
        /// 操作过程中，中途退出(受跳步影响)
        /// </summary>
        /// <param name="preJump">向前跳步退出</param>
        public void QuitHalfWay()
        {
            AnimationDriver.StopAllAnimation();

            SetProcessActive(false);
            if (processBase != null)
            {
                processBase.QuitHalfWay();
            }
            if(preprocess!=null)
            {
                preprocess.QuitHalfWay();
            }

            foreach (var item in this.GetComponents<IProcessState>())
            {
                item.HalfQuit();
            }
        }

        /// <summary>
        /// 设置进入时状态
        /// </summary>
        /// <param name="preJump">向前跳步状态</param>
        public void SetEnterState(bool currentEnter = true)
        {
            if (processBase != null)
            {
                processBase.SetEnterState();
            }

            foreach (var item in this.GetComponents<IProcessState>())
            {
                item.EnterState(currentEnter);
            }
        }

        /// <summary>
        /// 设置离开时状态
        /// </summary>
        public void SetExitState()
        {
            if (processBase != null)
            {
                processBase.SetExitState();
            }

            foreach (var item in this.GetComponents<IProcessState>())
            {
                item.ExitState();
            }
        }

        [HideIf("processBase")]
        [Button("创建PB_OpData")]
        public ProcessBase InitOpData()
        {
            if (processBase == null)
            {
                processBase = this.gameObject.GetComponent<PB_OpData>() == null
                    ? this.gameObject.AddComponent<PB_OpData>()
                    : this.gameObject.GetComponent<PB_OpData>();
            }

            return processBase;
        }

        #region 参数设置

        /// <summary>
        /// 名字
        /// </summary>
        public void SetName()
        {
            if (processBase != null)
            {
                this.gameObject.name = "第" + stepID + "步:" + processBase.GetPBDescribe();
                return;
            }
            this.gameObject.name = "第" + stepID + "步";
        }
        public void SetName(string name)
        {
            this.gameObject.name = "第" + stepID + "步:" + name;
        }
        #endregion
    }
}