using GalaSoft.MvvmLight.Ioc;
using RealTimeGraphEx.Controllers;
using RealTimeGraphEx.DataSeries;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Media;
using Tango.Core.Commands;
using Tango.Integration.Observables;
using Tango.MachineStudio.Common.Controls;
using Tango.MachineStudio.Common.Notifications;
using Tango.MachineStudio.Common.StudioApplication;
using Tango.SharedUI;
using System.Runtime.CompilerServices;
using System.Windows.Threading;
using Tango.Settings;
using Tango.MachineStudio.Developer.Views;
using Tango.Video.DirectCapture;
using Tango.Integration.Operators;
using Tango.PMR.Diagnostics;
using System.Reflection;

namespace Tango.MachineStudio.Developer.ViewModels
{
    /// <summary>
    /// Represents the developer module main view, view model.
    /// </summary>
    /// <seealso cref="Tango.SharedUI.ViewModel" />
    public class MainViewVM : ViewModel<IMainView>, IShutdownRequestBlocker
    {
        private INotificationProvider _notification;
        private TimeSpan _runningJobEstimatedDuration;
        private Dictionary<String, GraphControllerBase> _controllers;

        #region Properties

        /// <summary>
        /// Gets or sets the application manager.
        /// </summary>
        public IStudioApplicationManager ApplicationManager { get; set; }

        /// <summary>
        /// Gets or sets observable entites database the adapter.
        /// </summary>
        public ObservablesEntitiesAdapter Adapter { get; set; }

        protected Machine _selectedMachine;
        /// <summary>
        /// Gets or sets the selected machine.
        /// </summary>
        public Machine SelectedMachine
        {
            get { return _selectedMachine; }
            set
            {
                _selectedMachine = value;
                OnMachineChanged();
                RaisePropertyChangedAuto();
                InvalidateRelayCommands();

                if (_selectedMachine != null)
                {
                    _selectedMachine.Saved -= SelectedMachine_Saved;
                    _selectedMachine.Saved += SelectedMachine_Saved;
                }
            }
        }

        private List<LiquidTypesRml> _liquidTypesRmls;
        /// <summary>
        /// Gets or sets the liquid types RMLS.
        /// </summary>
        public List<LiquidTypesRml> LiquidTypesRmls
        {
            get { return _liquidTypesRmls; }
            set { _liquidTypesRmls = value; RaisePropertyChangedAuto(); }
        }

        private ProcessParametersTablesGroup _rmlProcessParametersTablesGroup;
        /// <summary>
        /// Gets or sets the RML process parameters table group (cloned).
        /// </summary>
        public ProcessParametersTablesGroup RmlProcessParametersTableGroup
        {
            get { return _rmlProcessParametersTablesGroup; }
            set
            { _rmlProcessParametersTablesGroup = value; RaisePropertyChangedAuto(); OnProcessParametersTableGroupChanged(); }
        }

        private ObservableCollection<ProcessParametersTablesGroup> _groupsHistory;
        /// <summary>
        /// Gets or sets the RML process parameters groups history.
        /// </summary>
        public ObservableCollection<ProcessParametersTablesGroup> GroupsHistory
        {
            get { return _groupsHistory; }
            set { _groupsHistory = value; RaisePropertyChangedAuto(); }
        }

        private ProcessParametersTablesGroup _selectedGroupHistory;
        /// <summary>
        /// Gets or sets the selected process parameters tables group history.
        /// </summary>
        public ProcessParametersTablesGroup SelectedGroupHistory
        {
            get { return _selectedGroupHistory; }
            set { _selectedGroupHistory = value; RaisePropertyChangedAuto(); OnSelectedGroupHistoryChanged(); }
        }

        private ProcessParametersTable _selectedProcessParametersTable;
        /// <summary>
        /// Gets or sets the selected process parameters table.
        /// </summary>
        public ProcessParametersTable SelectedProcessParametersTable
        {
            get { return _selectedProcessParametersTable; }
            set { _selectedProcessParametersTable = value; RaisePropertyChangedAuto(); OnSelectedParametersTableChanged(); }
        }

        private Job _selectedJob;
        /// <summary>
        /// Gets or sets the selected machine job.
        /// </summary>
        public Job SelectedJob
        {
            get { return _selectedJob; }
            set
            {
                _selectedJob = value;
                RaisePropertyChangedAuto();
                OnSelectedJobChanged();
            }
        }

        private Segment _selectedSegment;
        /// <summary>
        /// Gets or sets the job selected segment.
        /// </summary>
        public Segment SelectedSegment
        {
            get { return _selectedSegment; }
            set { _selectedSegment = value; RaisePropertyChangedAuto(); OnSelectedSegmentChanged(); }
        }

        private BrushStop _selectedBrushStop;
        /// <summary>
        /// Gets or sets the selected segment selected brush stop.
        /// </summary>
        public BrushStop SelectedBrushStop
        {
            get { return _selectedBrushStop; }
            set { _selectedBrushStop = value; RaisePropertyChangedAuto(); }
        }

        private Rml _selectedRML;
        /// <summary>
        /// Gets or sets the selected RML.
        /// </summary>
        public Rml SelectedRML
        {
            get { return _selectedRML; }
            set
            {
                _selectedRML = value;
                InvalidateLiquidFactorsAndProcessTables();
                RaisePropertyChangedAuto();
                InvalidateRelayCommands();
            }
        }

        private bool _isSideBarOpened;
        /// <summary>
        /// Gets or sets a value indicating whether the configuration panels are opened.
        /// </summary>
        public bool IsSideBarOpened
        {
            get { return _isSideBarOpened; }
            set { _isSideBarOpened = value; RaisePropertyChangedAuto(); }
        }

        private ObservableCollection<Sensor> _availableSensors;
        /// <summary>
        /// Gets or sets the available sensors.
        /// </summary>
        public ObservableCollection<Sensor> AvailableSensors
        {
            get { return _availableSensors; }
            set { _availableSensors = value; RaisePropertyChangedAuto(); }
        }

        private ObservableCollection<IRealTimeGraph> _graphs;
        /// <summary>
        /// Gets or sets the collection of displayed graph controls.
        /// </summary>
        public ObservableCollection<IRealTimeGraph> Graphs
        {
            get { return _graphs; }
            set { _graphs = value; RaisePropertyChangedAuto(); }
        }

        private TimeSpan _estimatedDuration;
        /// <summary>
        /// Gets or sets the estimated duration for the selected job.
        /// </summary>
        public TimeSpan EstimatedDuration
        {
            get { return _estimatedDuration; }
            set { _estimatedDuration = value; RaisePropertyChangedAuto(); }
        }

        private bool _isJobRunning;
        /// <summary>
        /// Gets or sets a value indicating whether a job is currently running.
        /// </summary>
        public bool IsJobRunning
        {
            get { return _isJobRunning; }
            set { _isJobRunning = value; RaisePropertyChangedAuto(); }
        }

        private Job _runningJob;
        /// <summary>
        /// Gets or sets the currently running job.
        /// </summary>
        public Job RunningJob
        {
            get { return _runningJob; }
            set { _runningJob = value; RaisePropertyChangedAuto(); }
        }

        private double _runningJobProgress;
        /// <summary>
        /// Gets or sets the running job current progress.
        /// </summary>
        public double RunningJobProgress
        {
            get { return _runningJobProgress; }
            set { _runningJobProgress = value; RaisePropertyChangedAuto(); }
        }

        private TimeSpan _runningJobRemainingTime;
        /// <summary>
        /// Gets or sets the job remaining time.
        /// </summary>
        public TimeSpan RunningJobRemainingTime
        {
            get { return _runningJobRemainingTime; }
            set { _runningJobRemainingTime = value; RaisePropertyChangedAuto(); }
        }

        private bool _isJobCompleted;
        /// <summary>
        /// Gets or sets a value indicating whether the running job has completed successfully.
        /// </summary>
        public bool IsJobCompleted
        {
            get { return _isJobCompleted; }
            set { _isJobCompleted = value; RaisePropertyChangedAuto(); }
        }

        private bool _isJobFailed;
        /// <summary>
        /// Gets or sets a value indicating whether the running job has failed.
        /// </summary>
        public bool IsJobFailed
        {
            get { return _isJobFailed; }
            set { _isJobFailed = value; RaisePropertyChangedAuto(); }
        }

        private bool _showJobStatus;
        /// <summary>
        /// Gets or sets a value indicating whether to show all the relevant job status areas.
        /// </summary>
        public bool ShowJobStatus
        {
            get { return _showJobStatus; }
            set { _showJobStatus = value; RaisePropertyChangedAuto(); }
        }

        private bool _isJobCanceled;
        /// <summary>
        /// Gets or sets a value indicating whether the last running job was canceled.
        /// </summary>
        public bool IsJobCanceled
        {
            get { return _isJobCanceled; }
            set { _isJobCanceled = value; RaisePropertyChangedAuto(); }
        }

        /// <summary>
        /// Gets or sets the capture devices.
        /// </summary>
        public ObservableCollection<CaptureDevice> CaptureDevices { get; set; }

        private IMachineOperator _machineOperator;
        /// <summary>
        /// Gets or sets the machine operator.
        /// </summary>
        public IMachineOperator MachineOperator
        {
            get { return _machineOperator; }
            set { _machineOperator = value; RaisePropertyChangedAuto(); }
        }

        #endregion

        #region Commands

        /// <summary>
        /// Gets or sets the edit machine command.
        /// </summary>
        public RelayCommand EditMachineCommand { get; set; }

        /// <summary>
        /// Gets or sets the edit RML command.
        /// </summary>
        public RelayCommand EditRMLCommand { get; set; }

        /// <summary>
        /// Gets or sets the toggle side bar command.
        /// </summary>
        public RelayCommand ToggleSideBarCommand { get; set; }

        /// <summary>
        /// Gets or sets the save process parameters command.
        /// </summary>
        public RelayCommand SaveProcessParametersCommand { get; set; }

        /// <summary>
        /// Gets or sets the save liquid factors command.
        /// </summary>
        public RelayCommand SaveLiquidFactorsCommand { get; set; }

        /// <summary>
        /// Gets or sets the add segment command.
        /// </summary>
        public RelayCommand AddSegmentCommand { get; set; }

        /// <summary>
        /// Gets or sets the remove segment command.
        /// </summary>
        public RelayCommand RemoveSegmentCommand { get; set; }

        /// <summary>
        /// Gets or sets the add job command.
        /// </summary>
        public RelayCommand AddJobCommand { get; set; }

        /// <summary>
        /// Gets or sets the remove job command.
        /// </summary>
        public RelayCommand RemoveJobCommand { get; set; }

        /// <summary>
        /// Gets or sets the add brush stop command.
        /// </summary>
        public RelayCommand AddBrushStopCommand { get; set; }

        /// <summary>
        /// Gets or sets the remove brush stop command.
        /// </summary>
        public RelayCommand RemoveBrushStopCommand { get; set; }

        /// <summary>
        /// Gets or sets the save jobs command.
        /// </summary>
        public RelayCommand SaveJobsCommand { get; set; }

        /// <summary>
        /// Gets or sets the start job command.
        /// </summary>
        public RelayCommand StartJobCommand { get; set; }

        /// <summary>
        /// Gets or sets the stop job command.
        /// </summary>
        public RelayCommand StopJobCommand { get; set; }

        /// <summary>
        /// Gets or sets the close job completion status command.
        /// </summary>
        public RelayCommand CloseJobCompletionStatusCommand { get; set; }

        /// <summary>
        /// Gets or sets the toggle camera command.
        /// </summary>
        public RelayCommand<CaptureDevice> ToggleCameraCommand { get; set; }

        #endregion

        #region Constructors

        /// <summary>
        /// Initializes a new instance of the <see cref="MainViewVM"/> class.
        /// </summary>
        public MainViewVM(IMainView view) : base(view, true)
        {
            IsSideBarOpened = true;

            if (!this.DesignMode)
            {
                Adapter = ObservablesEntitiesAdapter.Instance;
                AvailableSensors = Adapter.Sensors.ToObservableCollection();
            }

            Graphs = new ObservableCollection<IRealTimeGraph>();
            _controllers = new Dictionary<String, GraphControllerBase>();
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="MainViewVM"/> class.
        /// </summary>
        /// <param name="applicationManager">The application manager.</param>
        /// <param name="notificationProvider">The notification provider.</param>
        [PreferredConstructor]
        public MainViewVM(IStudioApplicationManager applicationManager, INotificationProvider notificationProvider, IMainView view) : this(view)
        {
            _notification = notificationProvider;
            ApplicationManager = applicationManager;

            //Initialize Commands...
            EditMachineCommand = new RelayCommand(EditMachine, () => SelectedMachine != null);
            EditRMLCommand = new RelayCommand(EditRML, () => SelectedRML != null);
            ToggleSideBarCommand = new RelayCommand(() => IsSideBarOpened = !IsSideBarOpened);
            SaveProcessParametersCommand = new RelayCommand(SaveProcessParameters, () => SelectedRML != null && SelectedRML.ProcessParametersTablesGroups.Count > 0);
            SaveLiquidFactorsCommand = new RelayCommand(SaveLiquidFactors, () => SelectedRML != null);
            AddSegmentCommand = new RelayCommand(AddSegment, () => SelectedJob != null);
            RemoveSegmentCommand = new RelayCommand(RemoveSegment, () => SelectedSegment != null);
            AddJobCommand = new RelayCommand(AddJob, () => SelectedMachine != null);
            RemoveJobCommand = new RelayCommand(RemoveJob, () => SelectedJob != null);
            AddBrushStopCommand = new RelayCommand(AddBrushStop, () => SelectedSegment != null);
            RemoveBrushStopCommand = new RelayCommand(RemoveBrushStop, () => SelectedBrushStop != null);
            SaveJobsCommand = new RelayCommand(SaveJobs, () => SelectedMachine != null);
            StartJobCommand = new RelayCommand(StartJob, () => SelectedJob != null && !IsJobRunning);
            StopJobCommand = new RelayCommand(StopJob, () => IsJobRunning);
            CloseJobCompletionStatusCommand = new RelayCommand(CloseJobCompletionStatusBar);

            CaptureDevices = new ObservableCollection<CaptureDevice>();
            var availableDevices = CaptureDevice.GetAvailableCaptureDevices();

            for (int i = 0; i < 3; i++)
            {
                if (i > availableDevices.Count - 1)
                {
                    CaptureDevices.Add(new CaptureDevice() { Device = null });
                }
                else
                {
                    CaptureDevices.Add(new CaptureDevice() { Device = availableDevices[i] });
                }
            }

            ToggleCameraCommand = new RelayCommand<CaptureDevice>(ToggleCamera);

            ApplicationManager.ConnectedMachineChanged += ApplicationManager_ConnectedMachineChanged;
        }

        private void ApplicationManager_ConnectedMachineChanged(object sender, Integration.Services.IExternalBridgeClient machine)
        {
            MachineOperator = machine;

            if (MachineOperator != null)
            {
                MachineOperator.EnableSensorsUpdate = true;
                MachineOperator.DiagnosticsDataAvailable += MachineOperator_DiagnosticsDataAvailable;
            }
        }

        private void MachineOperator_DiagnosticsDataAvailable(object sender, StartDiagnosticsResponse response)
        {
            foreach (var prop in response.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance))
            {
                GraphControllerBase controller = null;

                if (_controllers.TryGetValue(prop.Name, out controller))
                {
                    if (controller is GraphController)
                    {
                        double[] arr = Enumerable.ToArray(prop.GetValue(response) as IEnumerable<double>);
                        (controller as GraphController).PushData(arr);
                    }
                    else
                    {
                        //Multi Graph...
                    }
                }
            }
        }

        #endregion

        #region Event Handlers

        /// <summary>
        /// Handles the Saved event of the SelectedMachine.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void SelectedMachine_Saved(object sender, EventArgs e)
        {
            InvalidateLiquidFactorsAndProcessTables();
        }

        private void SelectedJob_LengthChanged(object sender, EventArgs e)
        {
            UpdateEstimatedDuration();
        }

        private void SelectedProcessParametersTable_DyeingSpeedMinInkUptakeChanged(object sender, EventArgs e)
        {
            if (SelectedSegment != null)
            {
                foreach (var liquidVolume in SelectedSegment.BrushStops.SelectMany(x => x.LiquidVolumes))
                {
                    liquidVolume.Invalidate();
                }
            }

            UpdateEstimatedDuration();
        }

        #endregion

        #region Virtual Methods

        protected virtual void OnSelectedParametersTableChanged()
        {
            if (SelectedProcessParametersTable != null)
            {
                SelectedProcessParametersTable.DyeingSpeedMinInkUptakeChanged -= SelectedProcessParametersTable_DyeingSpeedMinInkUptakeChanged;
                SelectedProcessParametersTable.DyeingSpeedMinInkUptakeChanged += SelectedProcessParametersTable_DyeingSpeedMinInkUptakeChanged;
            }

            SetSegmentBrushStopsLiquidVolumes(SelectedSegment);
        }

        /// <summary>
        /// Called when the process parameters table group has been changed
        /// </summary>
        /// <exception cref="NotImplementedException"></exception>
        private void OnProcessParametersTableGroupChanged()
        {
            if (RmlProcessParametersTableGroup != null && RmlProcessParametersTableGroup.ProcessParametersTables.Count > 0)
            {
                SelectedProcessParametersTable = RmlProcessParametersTableGroup.ProcessParametersTables.First();
            }

            UpdateEstimatedDuration();
        }

        /// <summary>
        /// Called when the selected segment has been changed
        /// </summary>
        protected virtual void OnSelectedSegmentChanged()
        {
            if (SelectedSegment != null)
            {
                SetSegmentBrushStopsLiquidVolumes(SelectedSegment);
                SelectedBrushStop = SelectedSegment.BrushStops.FirstOrDefault();
            }
        }

        /// <summary>
        /// Called when the selected job has been changed.
        /// </summary>
        protected virtual void OnSelectedJobChanged()
        {
            if (SelectedJob != null)
            {
                SelectedSegment = SelectedJob.Segments.FirstOrDefault();

                SelectedJob.LengthChanged -= SelectedJob_LengthChanged;
                SelectedJob.LengthChanged += SelectedJob_LengthChanged;

                UpdateEstimatedDuration();
            }
        }

        /// <summary>
        /// Called when the selected group history has been changed
        /// </summary>
        protected virtual void OnSelectedGroupHistoryChanged()
        {
            if (SelectedGroupHistory != null)
            {
                RmlProcessParametersTableGroup = SelectedGroupHistory.CloneGroup();
            }
        }

        /// <summary>
        /// Called when the machine has been changed
        /// </summary>
        protected virtual void OnMachineChanged()
        {
            InvalidateLiquidFactorsAndProcessTables();
        }

        #endregion

        #region Private Methods

        private void ToggleCamera(CaptureDevice captureDevice)
        {
            if (captureDevice.Device != null)
            {
                captureDevice.IsStarted = !captureDevice.IsStarted;
            }
        }

        private void CloseJobCompletionStatusBar()
        {
            IsJobCompleted = false;
            IsJobFailed = false;
            IsJobCanceled = false;
            ShowJobStatus = false;
            RunningJob = null;
        }

        private void StopJob()
        {
            IsJobRunning = false;
            IsJobCanceled = true;
        }

        private void CompleteJob()
        {
            IsJobRunning = false;
            IsJobCompleted = true;
        }

        private void StartJob()
        {
            RunningJobRemainingTime = TimeSpan.Zero;
            RunningJobProgress = 0;
            IsJobFailed = false;
            IsJobCanceled = false;
            IsJobCompleted = false;
            IsJobRunning = true;
            ShowJobStatus = true;
            RunningJob = SelectedJob;
            _runningJobEstimatedDuration = EstimatedDuration;

            DispatcherTimer timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromSeconds(0.03);
            timer.Tick += (x, y) =>
            {
                RunningJobRemainingTime = _runningJobEstimatedDuration - TimeSpan.FromSeconds(RunningJobProgress / (SelectedProcessParametersTable.DyeingSpeed / 100d));
                RunningJobProgress += 0.03;

                if (!IsJobRunning)
                {
                    timer.Stop();
                    return;
                }
                else if (RunningJobProgress >= RunningJob.Length)
                {
                    timer.Stop();
                    CompleteJob();
                    return;
                }
            };

            timer.Start();
        }

        private async void SaveJobs()
        {
            if (SelectedJob != null)
            {
                using (_notification.PushTaskItem("Saving machine jobs..."))
                {
                    await SelectedJob.SaveAsync();
                }
            }
        }

        private void UpdateEstimatedDuration()
        {
            if (SelectedJob != null && SelectedProcessParametersTable != null)
            {
                EstimatedDuration = TimeSpan.FromSeconds(SelectedJob.Length / (SelectedProcessParametersTable.DyeingSpeed / 100d));
            }
        }

        private void SetSegmentBrushStopsLiquidVolumes(Segment segment)
        {
            if (!DesignMode && segment != null)
            {
                foreach (var stop in segment.BrushStops)
                {
                    stop.SetLiquidVolumes(SelectedMachine.Configuration, SelectedRML, SelectedProcessParametersTable);
                }
            }
        }

        /// <summary>
        /// Saves the liquid factors.
        /// </summary>
        private async void SaveLiquidFactors()
        {
            if (SelectedRML != null)
            {
                using (_notification.PushTaskItem("Saving Liquid Factors..."))
                {
                    await SelectedRML.SaveAsync();
                    InvalidateLiquidFactorsAndProcessTables();
                }
            }
        }

        /// <summary>
        /// Navigates to the DB Module in order to edit the selected RML.
        /// </summary>
        private void EditRML()
        {
            ApplicationManager.RequestModule("Data Base", SelectedRML);
        }

        /// <summary>
        /// Navigates to the Machine Designer Module in order to edit the selected machine.
        /// </summary>
        private void EditMachine()
        {
            ApplicationManager.RequestModule("Machine Designer", SelectedMachine);
        }

        /// <summary>
        /// Saves the process parameters group.
        /// </summary>
        private async void SaveProcessParameters()
        {
            var response = _notification.ShowTextInput("Enter Group Name", "Group Name");

            if (response == null) return;

            using (_notification.PushTaskItem("Saving Parameters Group..."))
            {
                ProcessParametersTablesGroup group = new ProcessParametersTablesGroup();

                List<ProcessParametersTable> tables = new List<ProcessParametersTable>();
                foreach (var table in RmlProcessParametersTableGroup.ProcessParametersTables)
                {
                    var newTable = table.CloneEntity();
                    newTable.ProcessParametersTablesGroup = group;
                    tables.Add(newTable);
                }

                group.Active = true;
                group.ProcessParametersTables = tables.ToObservableCollection();
                group.Rml = SelectedRML;
                group.Name = response;
                group.SaveDate = DateTime.UtcNow;

                foreach (var g in SelectedRML.ProcessParametersTablesGroups)
                {
                    g.Active = false;
                }

                //String machineGuid = SelectedMachine.Guid;
                //String rmlGuid = SelectedRML.Guid;

                SelectedRML.ProcessParametersTablesGroups.Add(group);
                await SelectedRML.SaveAsync();

                //SelectedMachine = Adapter.Machines.SingleOrDefault(x => x.Guid == machineGuid);
                //SelectedRML = Adapter.Rmls.SingleOrDefault(x => x.Guid == rmlGuid);

                InvalidateLiquidFactorsAndProcessTables();
            }
        }

        /// <summary>
        /// Invalidates the liquid factors and process parameters tables.
        /// </summary>
        private void InvalidateLiquidFactorsAndProcessTables()
        {
            if (SelectedRML != null && SelectedMachine != null)
            {
                LiquidTypesRmls = SelectedMachine.Configuration.IdsPacks.OrderBy(x => x.PackIndex).Select(x => x.LiquidType).SelectMany(x => x.LiquidTypesRmls).Where(x => x.Rml.Guid == SelectedRML.Guid).ToList();
                RmlProcessParametersTableGroup = SelectedRML.ProcessParametersTablesGroups.SingleOrDefault(x => x.Active);

                if (RmlProcessParametersTableGroup != null)
                {
                    RmlProcessParametersTableGroup = RmlProcessParametersTableGroup.CloneGroup();
                    RmlProcessParametersTableGroup.ProcessParametersTables = RmlProcessParametersTableGroup.ProcessParametersTables.OrderBy(x => x.TableIndex).ToObservableCollection();
                }

                GroupsHistory = SelectedRML.ProcessParametersTablesGroups.OrderByDescending(x => x.SaveDate).OrderBy(x => !x.Active).ToObservableCollection();
            }
        }

        /// <summary>
        /// Removes the selected segment.
        /// </summary>
        private void RemoveSegment()
        {
            if (SelectedJob != null && SelectedSegment != null)
            {
                SelectedJob.Segments.Remove(SelectedSegment);
            }
        }

        /// <summary>
        /// Adds a new segment.
        /// </summary>
        private void AddSegment()
        {
            if (SelectedJob != null)
            {
                Segment seg = new Segment();
                seg.Name = "Untitled Segment";
                seg.Length = 1;
                SelectedJob.Segments.Add(seg);
                SelectedSegment = seg;
                AddBrushStop();
            }
        }

        /// <summary>
        /// Removes the selected job.
        /// </summary>
        private void RemoveJob()
        {
            if (SelectedMachine != null && SelectedJob != null)
            {
                SelectedMachine.Jobs.Remove(SelectedJob);
            }
        }

        /// <summary>
        /// Adds a new job to the selected machine.
        /// </summary>
        private void AddJob()
        {
            if (SelectedMachine != null)
            {
                SelectedMachine.Jobs.Add(new Job()
                {
                    Name = "Untitled Job",
                    CreationDate = DateTime.UtcNow,
                });
            }
        }

        /// <summary>
        /// Removes the selected brush stop.
        /// </summary>
        private void RemoveBrushStop()
        {
            if (SelectedBrushStop != null && SelectedSegment != null)
            {
                SelectedSegment.BrushStops.Remove(SelectedBrushStop);
            }
        }

        /// <summary>
        /// Adds a new brush stop to the selected segment.
        /// </summary>
        private void AddBrushStop()
        {
            if (SelectedSegment != null)
            {
                var stop = new BrushStop();
                stop.ColorSpace = Adapter.ColorSpaces.FirstOrDefault();
                stop.Color = Colors.Black;
                stop.SetLiquidVolumes(SelectedMachine.Configuration, SelectedRML, SelectedProcessParametersTable);
                SelectedSegment.BrushStops.Add(stop);
            }
        }

        #endregion

        #region Override Methods

        protected override void RaisePropertyChangedAuto([CallerMemberName] string caller = null)
        {
            base.RaisePropertyChangedAuto(caller);

            InvalidateRelayCommands();
        }

        #endregion

        #region Public Events

        /// <summary>
        /// Add sensor graph from available sensors to displayed graphs.
        /// </summary>
        /// <param name="sensor">The sensor.</param>
        public void OnDropAvailableSensor(Sensor sensor)
        {
            if (Graphs.Count < 8)
            {
                IRealTimeGraph graphControl = null;
                GraphControllerBase controller = null;

                if (!sensor.MultiChannel)
                {
                    graphControl = new RealTimeGraphControl();
                    controller = new GraphController();
                    graphControl.Controller = controller;
                }
                else
                {
                    graphControl = new RealTimeGraphMultiControl();
                    controller = new GraphMultiController();

                    for (int i = 0; i < sensor.ChannelCount; i++)
                    {
                        (controller as GraphMultiController).AddSeries(new DataYSeries()
                        {
                            Name = sensor.Description.First().ToString() + (i + 1),
                            UseFillAndStroke = true,
                            Stroke = new SolidColorBrush(Core.Helpers.ColorHelper.GetRandomColor())
                        });
                    }

                    graphControl.Controller = controller;
                }

                graphControl.Tag = sensor;
                graphControl.SensorName = sensor.Description;
                graphControl.SensorUnits = sensor.Units;
                graphControl.InnerGraph.Minimum = sensor.Min;
                graphControl.InnerGraph.Maximum = sensor.Max;
                graphControl.InnerGraph.MaxPoints = Common.Helpers.GraphsHelper.GetMaxPoints(sensor.PointsPerFrame);
                graphControl.GraphRemoveButtonPressed += (sender, __) =>
                {
                    RemoveGraph(sender as IRealTimeGraph);
                };
                Graphs.Add(graphControl);
                AvailableSensors.Remove(sensor);

                _controllers.Add(sensor.Name, controller);
            }
            else
            {
                _notification.ShowInfo("The maximum number of real-time graphs is eight. Please remove a graph to add another.");
            }
        }

        /// <summary>
        /// Switch the brush stop position in the segment.
        /// </summary>
        /// <param name="draggedStop">The dragged stop.</param>
        /// <param name="droppedStop">The dropped stop.</param>
        public void OnDropBrushStop(BrushStop draggedStop, BrushStop droppedStop)
        {
            int tmpIndex = draggedStop.StopIndex;
            draggedStop.StopIndex = droppedStop.StopIndex;
            droppedStop.StopIndex = tmpIndex;

            SelectedSegment.BrushStops.Swap(draggedStop, droppedStop);
        }

        /// <summary>
        /// Removes the graph.
        /// </summary>
        /// <param name="graph">The graph.</param>
        public void RemoveGraph(IRealTimeGraph graph)
        {
            var sensor = graph.Tag as Sensor;
            _controllers.Remove(sensor.Name);
            graph.InnerGraph.Dispose();
            Graphs.Remove(graph);
            AvailableSensors.Insert(0, sensor);
        }

        #endregion

        #region IShutdownRequestBlocker

        public Task<bool> OnShutdownRequest()
        {
            if (IsJobRunning)
            {
                InvokeUI(() =>
                {
                    _notification.ShowWarning("Please stop the currently running job before closing the developer module.");
                });

                return Task.FromResult(false);
            }

            SettingsManager.Default.MachineStudio.DeveloperModule.LastSelectedMachineGuid = SelectedMachine != null ? SelectedMachine.Guid : null;
            SettingsManager.Default.MachineStudio.DeveloperModule.LastSelectedRMLGuid = SelectedRML != null ? SelectedRML.Guid : null;
            SettingsManager.Default.MachineStudio.DeveloperModule.LastSelectedJobGuid = SelectedJob != null ? SelectedJob.Guid : null;
            SettingsManager.SaveDefaultSettings();

            return Task.FromResult(true);
        }

        #endregion

        #region IMainView

        protected override void OnViewAttached()
        {
            base.OnViewAttached();

            if (SettingsManager.Default.MachineStudio.DeveloperModule.LastSelectedMachineGuid != null)
            {
                SelectedMachine = Adapter.Machines.SingleOrDefault(x => x.Guid == SettingsManager.Default.MachineStudio.DeveloperModule.LastSelectedMachineGuid);
            }

            if (SettingsManager.Default.MachineStudio.DeveloperModule.LastSelectedRMLGuid != null)
            {
                SelectedRML = Adapter.Rmls.SingleOrDefault(x => x.Guid == SettingsManager.Default.MachineStudio.DeveloperModule.LastSelectedRMLGuid);
            }

            if (SettingsManager.Default.MachineStudio.DeveloperModule.LastSelectedJobGuid != null && SelectedMachine != null)
            {
                SelectedJob = SelectedMachine.Jobs.SingleOrDefault(x => x.Guid == SettingsManager.Default.MachineStudio.DeveloperModule.LastSelectedJobGuid);
            }
        }

        #endregion
    }
}