namespace ChivaXR
{
    using UnityEngine;

    public delegate void ProcessEventHandler(ProcessBase process);

    public class ProcessBase : MonoBehaviour
    {
        [HideInInspector]
        public bool isPlaying;

        [HideInInspector]
        public ProcessElement currentProcessElement;

        public event ProcessEventHandler Process_EnterEvent;
        public event ProcessEventHandler Process_UseEvent;
        public event ProcessEventHandler Process_ExitEvent;
        public event ProcessEventHandler Process_HalfExitEvent;

        /// <summary>
        /// 进入流程
        /// </summary>
        /// <param name="p"></param>
        public virtual void Enter(ProcessElement p)
        {
            currentProcessElement = p;
            isPlaying = true;
            Process_EnterEvent?.Invoke(this);
        }

        /// <summary>
        /// 完成离开
        /// </summary>
        public virtual void Exit()
        {
            if (!isPlaying) return;
            isPlaying = false;
            Debug.Log("Exit" + currentProcessElement.stepID + "步骤");
            Process_ExitEvent?.Invoke(this);

            currentProcessElement.Exit();
        }

        /// <summary>
        /// 中途退出流程
        /// </summary>
        public virtual void QuitHalfWay()
        {
            isPlaying = false;
            Process_HalfExitEvent?.Invoke(this);
        }

        /// <summary>
        /// 设置为进入状态
        /// </summary>
        public virtual void SetEnterState()
        {
        }

        /// <summary>
        /// 设置为完成状态
        /// </summary>
        public virtual void SetExitState()
        {
        }

        public virtual string GetPBDescribe()
        {
            return this.name;
        }
    }
}