using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Gumming.Execute.Workflow;

namespace Gumming.Execute.Station
{
    public class StationUnit
    {
        public string StationName { get; set; }
        public int Time { get; set; }
        public int[] Pos { get; set; }
        public Context Context { get; set; }
        public bool StopFlag { get; set; }

        private readonly object _lock = new object();

        public void Work(string stationName, Wafer wafer)
        {
            Console.WriteLine(
                $"{wafer.Name} do [{wafer.CurrentFlow.Index}:{wafer.CurrentFlow.Name}] at {stationName} begin {DateTime.Now}");
            Context.AppendLog(
                $"{wafer.Name} do [{wafer.CurrentFlow.Index}:{wafer.CurrentFlow.Name}] at {stationName} begin {DateTime.Now}");
            //机器人作业
            try
            {
                Thread.Sleep(Time * 1000);
            }
            catch (ThreadInterruptedException)
            {
            }

            Console.WriteLine(
                $"{wafer.Name} do [{wafer.CurrentFlow.Index}:{wafer.CurrentFlow.Name}] at {stationName} end {DateTime.Now}");
            Context.AppendLog(
                $"{wafer.Name} do [{wafer.CurrentFlow.Index}:{wafer.CurrentFlow.Name}] at {stationName} end {DateTime.Now}");
        }

        public int GetPos()
        {
            lock (_lock)
            {
                for (int i = 0; i < Pos.Length; i++)
                {
                    if (Pos[i] == 0)
                    {
                        Pos[i] = 1;
                        return i;
                    }
                }

                return -1;
            }
        }

        public int GetFinishedPos()
        {
            lock (_lock)
            {
                for (int i = 0; i < Pos.Length; i++)
                {
                    if (Pos[i] == 2)
                    {
                        return i;
                    }
                }

                return -1;
            }
        }

        public void ReleasePos(int i)
        {
            lock (_lock)
            {
                Pos[i] = 0;
            }
        }

        public void FinishPos(int i)
        {
            lock (_lock)
            {
                Pos[i] = 2;
            }
        }

        public void Process(string stationName)
        {
            FlowUnit todoFlow = Context.GetFlowUnitByStation(stationName);
            while (!StopFlag)
            {
                int pos = GetPos();
                if (pos >= 0)
                {
                    RobotHand todoWaferRobot = Context.GetTodoWaferByFlow(todoFlow, pos);
                    if (todoWaferRobot != null)
                    {
                        Wafer todoWafer = todoWaferRobot.CurrentWafer;
                        todoWafer.CurrentFlow = todoFlow;

                        int currentPos = todoWafer.CurrentPos;
                        if (todoWafer.Works.Count > 0)
                        {
                            StationWork lastWork = todoWafer.Works[todoWafer.Works.Count - 1];
                            string log = $"{stationName}{pos}拿到 wafer:{todoWafer.Name}  释放：{lastWork.StationName}";
                            Console.WriteLine(log);
                            Context.AppendLog(log);
                            Context.StationUnitMap[lastWork.FlowUnit.Name].ReleasePos(currentPos);
                        }
                        else
                        {
                            string log = $"{stationName}{pos}拿到 wafer:{todoWafer.Name}";
                            Console.WriteLine(log);
                            Context.AppendLog(log);
                        }

                        todoWafer.CurrentPos = pos;
                        Context.Robot.ReleaseFreeHand(todoWaferRobot);
                        StationWork stationWork = new StationWork();
                        todoWafer.Works.Add(stationWork);
                        stationWork.FlowUnit = todoFlow;
                        stationWork.StationName = stationName + pos;
                        stationWork.StationNo = pos;
                        stationWork.StartTime = DateTime.Now;
                        todoWafer.CurrentStationWork = stationWork;
                        new Thread(() =>
                        {
                            Work(stationName + pos, todoWafer);
                            stationWork.EndTime = DateTime.Now;
                            stationWork.Done = true;
                            FinishPos(pos);
                            Context.DoneWafer(stationWork, todoWafer);
                            GetFinishedWafer(stationName);
                        }).Start();
                    }
                    else
                    {
                        ReleasePos(pos);
                    }
                }

           
            }
        }

        /// <summary>
        /// 送料：当本工位wafer结束时取料
        /// </summary>
        private void GetFinishedWafer(string stationName)
        {
            var finishedPos = GetFinishedPos();

            //取到已完成的工位
            if (finishedPos >= 0)
            {
                RobotHand robotHand = Context.Robot.GetFreeHand(2);

                //留一个空位
                if (robotHand != null)
                {
                    Wafer currentWafer = Context.GetCurrentWaferByFlow(stationName, finishedPos, robotHand);
                    if (currentWafer != null)
                    {
                        //清除当前工位
                        /*currentWafer.CurrentFlow = null;
                        currentWafer.CurrentStationWork = null;*/
                    }
                    else
                    {
                        Context.Robot.ReleaseFreeHand(robotHand);
                    }

                    //置为空闲
                    ReleasePos(finishedPos);
                }
            }
        }
    }
}