using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace StageController
{
    public class Moveflow : List<Workflow>
    {
        public bool Done => this.All((e) => e.Done == true);

        public bool IsStoped = false;

        public bool IsPause = false;

        private bool Running = false;
        public event Action OnMoveflowDone;

        public void Start()
        {
            if (Done || IsStoped)
                throw new Exception("AlreadyDone");
            if (Running)
                throw new Exception("AlreadyStart");

            Running = true;
            new Task(() =>
            {
                foreach (var workflow in this)
                {
                    workflow.Process();
                    while ((!workflow.Judgement() || IsPause) && !IsStoped)
                    {
                        Thread.Sleep(50);
                    }
                    workflow.Done = true;
                    if (IsStoped) return;
                }
                OnMoveflowDone?.Invoke();

            }).Start();
        }

        public void Stop()
        {
            IsStoped = true;
        }

        /// <summary>
        /// 暂停/继续
        /// </summary>
        public void Pause()
        {
            IsPause = !IsPause;
        }


        public void Add(Action a = null, Func<bool> j = null)
        {
            var workflow = new Workflow(this);
            if (a != null)
                workflow.Process = a;
            if (j != null)
                workflow.Judgement = j;
            Add(workflow);
        }
    }
    //public interface IMoveFlow
    //{
    //    public static Moveflow ToCenter()
    //    {

    //    }

    //    public static Moveflow OutStage() { }

    //    public static Moveflow InStage() { }

    //    public static Moveflow ResetStage() { }

    //}
}