using ACS.SPiiPlusNET;
using Aurora;
using Aurora.Api;
using Aurora.Api.DataType;
using Aurora.View;
using Hermes.Functional;
using System;
using System.Collections.ObjectModel;
using System.Data;
using System.Linq;
using System.Reactive.Linq;
using System.Windows;
using System.Windows.Data;
using System.Windows.Input;
using System.Windows.Threading;

namespace AuroraACS.Views
{
    public class UCACSDeviceViewModel : NotifyPropertyChangedBase
    {
        private IAuroraEnvironment _env;
        private ACSDevice _dev;

        private string _settingId;
        private ACSDeviceSetting _setting;

        public ICommand CMD_VisibleChanged { get; }
        public ICommand CMD_BufferStart { get; }
        public ICommand CMD_BufferStop { get; }

        //public ICommand CMD_BufferAdd { get; }
        //public ICommand CMD_BufferDelete { get; }
        //public ICommand CMD_BufferSave { get; }
        //public ICommand CMD_BufferLoad { get; }

        public ICommand CMD_VariableValueWrite { get; }
        //public ICommand CMD_VariableValueAdd { get; }
        //public ICommand CMD_VariableValueDelete { get; }
        //public ICommand CMD_VariableValueSave { get; }
        //public ICommand CMD_VariableValueLoad { get; }

        public ObservableCollection<BufferInfo> BufferInfoList { get => _BufferInfoList; set => SetProperty(ref _BufferInfoList, value); }
        private ObservableCollection<BufferInfo> _BufferInfoList;
        public BufferInfo SelectedBufferInfo {
            get => _SelectedBufferInfo;
            set {

                if(SetProperty(ref _SelectedBufferInfo, value))
                    UpdateSelectedReference();
            }
        }
        private BufferInfo _SelectedBufferInfo;

        public VariableValueCollection VariableValueList { get => _VariableValueList; set => SetProperty(ref _VariableValueList, value); }
        private VariableValueCollection _VariableValueList;
        public VariableValue SelectedVariableValue { get => _SelectedVariableValue; set => SetProperty(ref _SelectedVariableValue, value); }
        private VariableValue _SelectedVariableValue;

        public string WriteText { get => _WriteText; set => SetProperty(ref _WriteText, value); }
        private string _WriteText;

        public string HelpImagePath { get => _HelpImagePath; set => SetProperty(ref _HelpImagePath, value); }
        private string _HelpImagePath;

        private readonly DispatcherTimer _monitorTimer;

        public UCACSDeviceViewModel(IAuroraEnvironment aurora, string deviceId, string settingId)
        {
            _env = aurora;
            _dev = aurora.DeviceManager[deviceId] as ACSDevice;

            _settingId = settingId;
            _setting = aurora.SettingEntry[settingId] as ACSDeviceSetting;

            HelpImagePath = $"file:///{_setting.HelpImagePath}";

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

            CMD_VisibleChanged = new DelegateCommand(VisibleChanged);

            CMD_BufferStart = new DelegateCommand(OnBufferStart);
            CMD_BufferStop = new DelegateCommand(OnBufferStop);

            CMD_VariableValueWrite = new DelegateCommand(OnVariableValueWrite);

            BufferInfoList = new BufferInfoCollection(_setting.BufferInfoList.Where(item => item.BufferNo != -1));
            VariableValueList = new VariableValueCollection(_setting.VariableValueList.Where(item => item.VariableValueName != string.Empty));

            for(int i = 0;  i < VariableValueList.Count; i++)
                _setting.VariableValueList[i].Index = VariableValueList[i].Index = i;

            aurora.SettingEntry.Save(settingId, _setting, "IndexUpdator");
        }


        private void UpdateSelectedReference()
        {
            if (SelectedBufferInfo == null)
                return;

            // 초기화 값이면 리턴
            int selectedBufferNo = SelectedBufferInfo.BufferNo;
            if (selectedBufferNo == -1)
                return;

            // 버퍼와 연결된 데이터 UI 하이라이트
            foreach (var value in VariableValueList)
                value.IsSelectReference = (value.ReferenceBuffer == selectedBufferNo);

            CollectionViewSource.GetDefaultView(VariableValueList).Refresh();
        }
        private void OnBufferStart(object obj)
        {
            if (_dev == null)
                return;

            if (obj is BufferInfo info) {
                if (info == null || info.BufferNo == -1)
                    return;

                if (MessageUtil.ShowYesNoMessageDialog("실행", "실행하시겠습니까?")) {
                    _dev.RunBuffer((ProgramBuffer)info.BufferNo, info.Label);
                }
            }
        }

        private void OnBufferStop(object obj)
        {
            if (_dev == null)
                return;

            if (obj is BufferInfo info) {
                if (info == null || info.BufferNo == -1)
                    return;

                if (MessageUtil.ShowYesNoMessageDialog("실행", "실행하시겠습니까?")) {
                    _dev.StopBuffer((ProgramBuffer)info.BufferNo);
                }
            }
        }

        private void OnVariableValueWrite(object obj)
        {
            if (SelectedVariableValue == null) {
                MessageBox.Show("선택된 셀이 없습니다.");
                return;
            }

            if(string.IsNullOrEmpty(WriteText)) {
                MessageBox.Show("입력된 Text가 없습니다.");
                return;
            }

            if (!SelectedVariableValue.Authority.Contains("W")) {
                MessageBox.Show("쓰기 권한이 없습니다.");
                return;
            }

            if (MessageUtil.ShowYesNoMessageDialog("입력", $"'{WriteText}'을 입력하시겠습니까?")) {
                double.TryParse(WriteText, out double write);
                _dev.WriteVariable(SelectedVariableValue.VariableValueName, write, ProgramBuffer.ACSC_NONE);
                WriteText = string.Empty;
            }
        }

        private void OnMonitoring(object sender, EventArgs e)
        {
            if (!_dev.IsActivated)
                return;

            foreach (var item in VariableValueList) {
                if(item.VariableValueName == string.Empty)
                    continue;

                item.Value = (int)_dev.ReadVariableInt(item.VariableValueName);
            }
        }

        public void UpdateGlobalParameter(object data)
        {
            if(data is VariableValue select) {
                if (MessageUtil.ShowYesNoMessageDialog("업데이트", $"상태를 업데이트하시겠습니까?")) {
                    if(select.DataType.Contains("I"))
                        select.Value = (int)_dev.ReadVariable(select.VariableValueName);
                    if (select.DataType.Contains("R"))
                        select.Value = (double)_dev.ReadVariable(select.VariableValueName);
                    //select.Value = (int)_dev.ReadVariableInt(select.VariableValueName);
                    CollectionViewSource.GetDefaultView(VariableValueList).Refresh();
                }
            }
        }

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

    }
}