using Aurora;
using Aurora.Api;
using Aurora.Api.Manager;
using Aurora.View;
using AuroraLaser;
using AuroraLaserScanner;
using HarfBuzzSharp;
using Microsoft.Office.Interop.Excel;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;
using System.Windows.Threading;

namespace WeldingCommon.Views
{
    public enum eAxisType
    {
        AXIS_X,
        AXIS_Y
    }

    public enum eJogDirection
    {
        MINUS,
        PLUS
    }

    public enum eMotionMode
    {
        ABS,
        REL
    };

    public class UCScannerMotionViewModel : NotifyPropertyChangedBase
    {
        private readonly Logger Log = new Logger("UCScannerMotionViewModel");

        public ICommand CMD_VisibleChanged { get; }
        public ICommand CMD_SpeedChanged { get; }
        public ICommand CMD_MotionModeChanged { get; }

        public ICommand CMD_JogMove { get; }
        public ICommand CMD_CommandPosMove { get; }


        private readonly IAuroraEnvironment _Aurora;

        private readonly Scanner _Scanner;
        private readonly Laser _Laser;
        private readonly ScannerConfig _ScannerConfig;

        private double _ScannerXPos;
        public double ScannerXPos { get => _ScannerXPos; set => SetProperty(ref _ScannerXPos, value); }
        private double _ScannerYPos;
        public double ScannerYPos { get => _ScannerYPos; set => SetProperty(ref _ScannerYPos, value); }
        private bool _IsScannerBusy;
        public bool IsScannerBusy { get => _IsScannerBusy; set => SetProperty(ref _IsScannerBusy, value); }

        private double _StepValue;
        public double StepValue { get => _StepValue; set => SetProperty(ref _StepValue, value); }

        private double _CommandPosX;
        public double CommandPosX { get => _CommandPosX; set => SetProperty(ref _CommandPosX, value); }
        private double _CommandPosY;
        public double CommandPosY { get => _CommandPosY; set => SetProperty(ref _CommandPosY, value); }

        private double _CommandPosLimitMinX;
        public double CommandPosLimitMinX { get => _CommandPosLimitMinX; set => SetProperty(ref _CommandPosLimitMinX, value); }
        private double _CommandPosLimitMaxX;
        public double CommandPosLimitMaxX { get => _CommandPosLimitMaxX; set => SetProperty(ref _CommandPosLimitMaxX, value); }

        private double _CommandPosLimitMinY;
        public double CommandPosLimitMinY { get => _CommandPosLimitMinY; set => SetProperty(ref _CommandPosLimitMinY, value); }
        private double _CommandPosLimitMaxY;
        public double CommandPosLimitMaxY { get => _CommandPosLimitMaxY; set => SetProperty(ref _CommandPosLimitMaxY, value); }

        private double _VelocityRate;
        private eMotionMode _MotionMode;

        private readonly DispatcherTimer _MonitorTimer;

        // PAM, RUW 처럼 2개 이상의 scanner 를 사용하는 경우가 있어, scannerId 를 받는 형태로 생성
        public UCScannerMotionViewModel(IAuroraEnvironment aurora, string scannerId)
        {
            _Aurora = aurora;

            _Scanner = _Aurora.DeviceManager[scannerId] as Scanner;
            _Laser = _Aurora.DeviceManager[CommonDeviceIds.Laser] as Laser;
            _ScannerConfig = _Aurora.DeviceManager.GetDeviceConfig(scannerId) as ScannerConfig;

            InitVariable();

            CMD_VisibleChanged = new DelegateCommand(VisibleChanged);
            CMD_SpeedChanged = new DelegateCommand(PerformCmdSpeedChanged);
            CMD_MotionModeChanged = new DelegateCommand(PerformCmdMotionModeChanged);
            CMD_JogMove = new DelegateCommand(PerformCmdJogMove);
            CMD_CommandPosMove = new DelegateCommand(PerformCmdCommandPosMove);

            _MonitorTimer = new DispatcherTimer();
            _MonitorTimer.Tick += OnMonitoring;
            _MonitorTimer.Interval = TimeSpan.FromMilliseconds(100);
        }

        private void InitVariable()
        {
            _VelocityRate = 1;
            _MotionMode = eMotionMode.ABS;
        }

        private void VisibleChanged(object obj)
        {
            bool visible = (bool)obj;
            if (visible) {
                Init_XYLimitPos();
                _MonitorTimer.Start();
            } else {
                _MonitorTimer.Stop();
            }
        }

        private void Init_XYLimitPos()
        {
            // TODO: Limit 값을 Min, Max 로 따로 Setting 입력값으로 가져와야 할 수도 있음. 우선 현상태 유지
            CommandPosLimitMinX = -1 * _ScannerConfig.ScanXSize / 2;
            CommandPosLimitMaxX = _ScannerConfig.ScanXSize / 2;

            CommandPosLimitMinY = -1 * _ScannerConfig.ScanYSize / 2;
            CommandPosLimitMaxY = _ScannerConfig.ScanYSize / 2;

            //CommandPosXLimit = string.Format($"{-1 * _ScannerConfig.ScanXSize / 2} ~ {_ScannerConfig.ScanXSize / 2}");
            //CommandPosYLimit = string.Format($"{-1 * _ScannerConfig.ScanYSize / 2} ~ {_ScannerConfig.ScanYSize / 2}");
        }

        private void OnMonitoring(object sender, EventArgs e)
        {
            double xPos, yPos;
            if (_Scanner != null && _Scanner.IsActivated) {
                _Scanner.GetXYPos(out xPos, out yPos);
                ScannerXPos = xPos;
                ScannerYPos = yPos;

                IsScannerBusy = _Scanner.GetBusyStatus();
            } else {
                ScannerXPos = 0;
                ScannerYPos = 0;
                IsScannerBusy = false;
            }

        }

        private void PerformCmdSpeedChanged(object commandParameter)
        {
            switch ((string)commandParameter) {
                case "Low": {
                        _VelocityRate = 0.5;
                    }
                    break;

                case "Mid": {
                        _VelocityRate = 1;
                    }
                    break;

                case "High": {
                        _VelocityRate = 1.5;
                    }
                    break;
            }
        }

        private void PerformCmdMotionModeChanged(object commandParameter)
        {
            switch ((string)commandParameter) {
                case "ABS": {
                        _MotionMode = eMotionMode.ABS;
                    }
                    break;

                case "REL": {
                        _MotionMode = eMotionMode.REL;
                    }
                    break;
            }
        }

        private void PerformCmdJogMove(object commandParameter)
        {
            // TODO: Left, Right, Up, Down 은 장비 Scanner 의 방향에 따라 달라질 수 있다
            //  양산중에는 동작 하면 안됨
            var MainSequence = _Aurora.SequenceEntry[CommonSequenceIds.SeqAutoRun].RunState;
            if(MainSequence == SequenceRunState.Running)
                return;

            switch ((string)commandParameter) {
                case "Left": {
                        MoveJogXYPos(eAxisType.AXIS_X, eJogDirection.MINUS);
                    }
                    break;

                case "Right": {
                        MoveJogXYPos(eAxisType.AXIS_X, eJogDirection.PLUS);
                    }
                    break;

                case "Up": {
                        MoveJogXYPos(eAxisType.AXIS_Y, eJogDirection.PLUS);
                    }
                    break;

                case "Down": {
                        MoveJogXYPos(eAxisType.AXIS_Y, eJogDirection.MINUS);
                    }
                    break;

                case "Home": {
                        MoveJogHome();
                    }
                    break;
            }
        }

        private void MoveJogXYPos(eAxisType axisType, eJogDirection direction)
        {
            double xPos = 0.0;
            double yPos = 0.0;
            switch (axisType) {
                case eAxisType.AXIS_X: {
                        if (direction == eJogDirection.MINUS) {
                            xPos = StepValue * -1;
                            yPos = 0;
                        } else if (direction == eJogDirection.PLUS) {
                            xPos = StepValue;
                            yPos = 0;
                        }
                    }
                    break;

                case eAxisType.AXIS_Y: {
                        if (direction == eJogDirection.MINUS) {
                            xPos = 0;
                            yPos = StepValue * -1;
                        } else if (direction == eJogDirection.PLUS) {
                            xPos = 0;
                            yPos = StepValue;
                        }
                    }
                    break;

                default:
                    break;
            }

            // 현재 Curruent Pos 기준으로, 입력방향으로 입력값이 Limit 를 넘어 서는지 확인 (Rel 임)
            if (CheckOverLimitPos(ScannerXPos + xPos, ScannerYPos + yPos)) {
                Log.E(string.Format("움직이려는 범위가 스캐너 범위를 초과하였습니다."));
                return;
            }

            double finalVelocity = _ScannerConfig.JumpSpeed * _VelocityRate;
            _Scanner.SetJumpSpeedCtrl(finalVelocity);
            _Scanner.JumpRel(xPos, yPos);

            //Jump 후 Speed 원복
            _Scanner.SetJumpSpeedCtrl(_ScannerConfig.JumpSpeed);
        }

        private void MoveJogHome()
        {
            double finalVelocity = _ScannerConfig.JumpSpeed * _VelocityRate;
            _Scanner.SetJumpSpeedCtrl(finalVelocity);
            _Scanner.JumpAbs(0, 0);

            //Jump 후 Speed 원복
            _Scanner.SetJumpSpeedCtrl(_ScannerConfig.JumpSpeed);
        }

        private void PerformCmdCommandPosMove(object commandParameter)
        {
            switch ((string)commandParameter) {
                case "X": {
                        MoveCommandXYPos(eAxisType.AXIS_X);
                    }
                    break;

                case "Y": {
                        MoveCommandXYPos(eAxisType.AXIS_Y);
                    }
                    break;
            }
        }

        private void MoveCommandXYPos(eAxisType axisType)
        {
            double xPos = 0.0;
            double yPos = 0.0;
            switch (axisType) {
                case eAxisType.AXIS_X: {
                        xPos = CommandPosX;

                        if (_MotionMode == eMotionMode.ABS) {
                            yPos = _Scanner.GetCommandPosY();
                        } else {
                            yPos = 0.0;
                        }
                    }
                    break;

                case eAxisType.AXIS_Y: {
                        if (_MotionMode == eMotionMode.ABS) {
                            xPos = _Scanner.GetCommandPosX();
                        } else {
                            xPos = 0.0;
                        }

                        yPos = CommandPosY;
                    }
                    break;

                default:
                    break;
            }

            // 현재 Curruent Pos 기준으로, 입력방향으로 입력값이 Limit 를 넘어 서는지 확인
            if (_MotionMode == eMotionMode.ABS) {
                if (CheckOverLimitPos(xPos, yPos)) {
                    Log.E(string.Format("움직이려는 범위가 스캐너 범위를 초과하였습니다."));
                    return;
                }
            } else {
                if (CheckOverLimitPos(ScannerXPos + xPos, ScannerYPos + yPos)) {
                    Log.E(string.Format("움직이려는 범위가 스캐너 범위를 초과하였습니다."));
                    return;
                }
            }

            double finalVelocity = _ScannerConfig.JumpSpeed * _VelocityRate;
            _Scanner.SetJumpSpeedCtrl(finalVelocity);

            if (_MotionMode == eMotionMode.ABS) {
                _Scanner.JumpAbs(xPos, yPos);
            } else {
                _Scanner.JumpRel(xPos, yPos);
            }

            //Jump 후 Speed 원복
            _Scanner.SetJumpSpeedCtrl(_ScannerConfig.JumpSpeed);
        }

        private bool CheckOverLimitPos(double calcPosX, double calcPosY)
        {
            if (calcPosX < CommandPosLimitMinX || calcPosX > CommandPosLimitMaxX) {
                return true;
            } else if (calcPosY < CommandPosLimitMinY || calcPosY > CommandPosLimitMaxY) {
                return true;
            }

            return false;
        }
    }
}