using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Input;
using System.Windows.Media;
using Comal.Classes;
using InABox.Clients;
using InABox.Configuration;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.WPF;

namespace PRSDesktop
{
    public class HTMLConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var str = value as string;
            return CoreUtils.StripHTML(str);
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class HideIfMineConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var guid = (Guid)value;
            return guid.Equals(ClientFactory.UserGuid) ? Visibility.Collapsed : Visibility.Visible;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class DueDateToColorConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var duedate = (DateTime)value;
            return duedate < DateTime.Today
                ? "Salmon"
                : duedate < DateTime.Today.AddDays(7)
                    ? "LightYellow"
                    : "LightGreen";
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class DateIsInListConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values.Length < 2 || !(values[0] is DateTime) || !(values[1] is IEnumerable<HighlightedDate>))
                return false;

            var date = (DateTime)values[0];
            var dateList = (IEnumerable<HighlightedDate>)values[1];

            return dateList.Any(hd => hd.Date.Equals(date));
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class HighlightedDateDescriptionConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values.Length < 2 || !(values[0] is DateTime) || !(values[1] is IEnumerable<HighlightedDate>))
                return false;

            var date = (DateTime)values[0];
            var dateList = (IEnumerable<HighlightedDate>)values[1];

            var highlightedDate = dateList.FirstOrDefault(hd => hd.Date.Equals(date));

            return highlightedDate != null ? highlightedDate.Description : string.Empty;
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class HighlightDatePicker : DatePicker
    {
        public static readonly DependencyProperty HighlightedDatesProperty =
            DependencyProperty.Register("HighlightedDates", typeof(IList<HighlightedDate>), typeof(HighlightDatePicker));

        public static readonly DependencyProperty HighlightBrushProperty = DependencyProperty.Register("HighlightBrush", typeof(Brush),
            typeof(HighlightDatePicker), new PropertyMetadata(Brushes.Orange));

        static HighlightDatePicker()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(HighlightDatePicker), new FrameworkPropertyMetadata(typeof(HighlightDatePicker)));
        }

        public IList<HighlightedDate> HighlightedDates
        {
            get => (IList<HighlightedDate>)GetValue(HighlightedDatesProperty);
            set => SetValue(HighlightedDatesProperty, value);
        }

        public Brush HighlightBrush
        {
            get => (Brush)GetValue(HighlightBrushProperty);
            set => SetValue(HighlightBrushProperty, value);
        }
    }

    public class HighlightedDate
    {
        public HighlightedDate(DateTime date, string description)
        {
            Date = date;
            Description = description;
        }

        public DateTime Date { get; set; }
        public string Description { get; set; }
    }

    public class RequiredReport
    {
        public RequiredReport(Guid id, DateTime date, TimeSpan start, TimeSpan finish, string notes)
        {
            ID = id;
            Date = date;
            Start = start;
            Finish = finish;
            Notes = notes;
        }

        public Guid ID { get; set; }
        public DateTime Date { get; set; }
        public TimeSpan Start { get; set; }
        public TimeSpan Finish { get; set; }
        public string Notes { get; set; }
    }

    public class TimeSheetConfirmedArgs : EventArgs
    {
        public DateTime Date { get; set; }
    }

    public delegate void TimeSheetConfirmedEvent(TimeSheetConfirmedArgs e);

    /// <summary>
    ///     Interaction logic for DailyReport.xaml
    /// </summary>
    public partial class DailyReport : UserControl, IPanel<Assignment>, IDynamicEditorHost
    {
        private DailyActivityScreenSettings _settings;

        private string _taskcategory = "Open";

        private bool bProgramaticallyChanging = false;

        private bool bSelectingAssignment;
        
        private AssignmentModel copiedAssignment;

        private KanbanGrid kg = new();
        private MenuItem MoveToComplete;
        private MenuItem MoveToCurrent;

        private MenuItem MoveToOpen;
        private MenuItem MoveToWaiting;
        private int RequiredReportIndex;

        private readonly List<RequiredReport> RequiredReports = new();

        private Assignment SelectedAssignment;
        
        private Point startPoint;

        private CalendarSettings Calendar_OnLoadSettings(object sender)
        {
            var settings = new CalendarSettings();
            settings.SettingsVisible = CalendarSettingsVisibility.Disabled;
            settings.AssignmentType = CalendarAssignmentType.Automatic;
            settings.CalendarView = CalendarViewType.Day;
            settings.BackgroundType = CalendarBackgroundType.Automatic;
            settings.TimeInterval = CalendarTimeInterval.FifteenMinutes;
            settings.EmployeeSelection = new EmployeeSelectorData(new Guid[] { Guid.Empty }, new Guid[] { Employee.ID });
            settings.Zoom = _settings.Zoom;
            return settings;
        }

        private void Calendar_OnSaveSettings(object sender, CalendarSettings properties)
        {
            _settings.Zoom = properties.Zoom;
            new UserConfiguration<DailyActivityScreenSettings>().Save(_settings);
        }
        
        public DailyReport()
        {
            InitializeComponent();

            ImportEmails.Visibility = Security.CanImport<Email>() ? Visibility.Visible : Visibility.Collapsed;
            ImportEmailsImage.Source = PRSDesktop.Resources.target.AsBitmapImage();

            ProcessWindowTrackers.Visibility = Security.IsAllowed<MonitorApplicationWindows>() ? Visibility.Visible : Visibility.Collapsed;
            ImportHistoryImage.Source = PRSDesktop.Resources.email.AsBitmapImage();

            ConfirmTimeSheetImage.Source = PRSDesktop.Resources.tick.AsBitmapImage();
        }

        #region IDynamicEditorHost

        public IEnumerable<DynamicGridColumn> Columns { get; } = InitialiseColumns();

        private static DynamicGridColumns InitialiseColumns()
        {
            var columns = new DynamicGridColumns();
            columns.ExtractColumns(typeof(Assignment));
            return columns;
        }

        public void LoadColumns(string column, Dictionary<string, string> columns)
        {
            columns.Clear();
            var comps = column.Split('.').ToList();
            comps.RemoveAt(comps.Count - 1);
            var prefix = string.Format("{0}.", string.Join(".", comps));
            var cols = Columns.Where(x => !x.ColumnName.Equals(column) && x.ColumnName.StartsWith(prefix));
            foreach (var col in cols)
                columns[col.ColumnName.Replace(prefix, "")] = col.ColumnName;
        }

        public IFilter? DefineFilter(Type type) => LookupFactory.DefineFilter<Assignment>(new Assignment[] { SelectedAssignment }, type);

        public void LoadLookups(ILookupEditorControl editor)
        {
            if (editor == Activity) Activity_OnDefineLookups(editor);
            else if (editor == Kanban) Task_OnDefineLookups(editor);
            else if (editor == ITP) ITP_OnDefineLookups(editor);
        }

        public Document? FindDocument(string filename)
        {
            return new Client<Document>().Load(new Filter<Document>(x => x.FileName).IsEqualTo(filename)).FirstOrDefault();
        }

        public Document? GetDocument(Guid id)
        {
            Document? doc = null;
            if (id != Guid.Empty)
                doc = new Client<Document>().Load(new Filter<Document>(x => x.ID).IsEqualTo(id)).FirstOrDefault();
            return doc;
        }

        public void SaveDocument(Document document)
        {
            new Client<Document>().Save(document, "");
        }

        object?[] IDynamicEditorHost.GetItems() => new object?[] { SelectedAssignment };

        public BaseEditor? GetEditor(DynamicGridColumn column) => column.Editor.CloneEditor();

        #endregion

        public void Setup()
        {
            Calendar.DisableUpdate();
            try
            {
                Parallel.ForEach(
                    new Action[]
                    {
                        () => _settings = new UserConfiguration<DailyActivityScreenSettings>().Load(),
                        () => Employee = new Client<Employee>().Load(new Filter<Employee>(x => x.UserLink.ID).IsEqualTo(ClientFactory.UserGuid)).FirstOrDefault(),
                    },
                    (a => a())
                );

                Calendar.Setup();
                
                LoadRequiredReports();
                
                if (!RequiredReports.Any())
                {
                    var start = TimeSpan.FromHours(6);
                    var finish = TimeSpan.FromHours(18);
                    var blocks = Calendar.GetRoster(Employee.ID, DateTime.Today)?.GetBlocks(DateTime.Today, TimeSpan.FromSeconds(0), TimeSpan.FromDays(1));
                    if (blocks?.Any() == true)
                    {
                        start = blocks.Aggregate(TimeSpan.FromDays(1), (time, block) => time.Ticks < block.Start.Ticks ? time : block.Start);
                        finish = blocks.Aggregate(TimeSpan.Zero, (time, block) => time.Ticks > block.Finish.Ticks ? time : block.Start);
                    }
                    RequiredReports.Add(new RequiredReport(Guid.Empty, DateTime.Today, start, finish, ""));
                    ConfirmDock.Visibility = Visibility.Collapsed;
                }

                ConfigureEditor(Title, new TextBoxEditor());
                ConfigureEditor(ActivityNotes, new MemoEditor());
                ConfigureEditor(Start, new TimeOfDayEditor());
                ConfigureEditor(Duration, new TimeOfDayEditor());
                ConfigureEditor(Finish, new TimeOfDayEditor());
                ConfigureEditor(Notes, new MemoEditor());

                Activity.EditorDefinition = DatabaseSchema.Property(typeof(Assignment), CoreUtils.GetFullPropertyName<Assignment,Guid>(c=>c.ActivityLink.ID,".")).Editor as ILookupEditor;
                Activity.OtherColumns["Color"] = CoreUtils.GetFullPropertyName<Assignment,String>(c=>c.ActivityLink.Color,".");
                Activity.OtherColumns["Description"] = CoreUtils.GetFullPropertyName<Assignment,String>(c=>c.ActivityLink.Description,".");
                ConfigureEditor(Activity);

                ITP.EditorDefinition = DatabaseSchema.Property(typeof(Assignment), "ITP.ID").Editor as ILookupEditor;
                ITP.OtherColumns["Code"] = "ITP.Code";
                //ConfigureEditor(ITP);

                Kanban.EditorDefinition = DatabaseSchema.Property(typeof(Assignment), "Task.ID").Editor as ILookupEditor;
                Kanban.OtherColumns["JobLink.ID"] = "JobLink.ID";
                Kanban.OtherColumns["JobLink.JobNumber"] = "JobLink.JobNumber";
                Kanban.OtherColumns["JobLink.Name"] = "JobLink.Name";
                ConfigureEditor(Kanban);

                Job.EditorDefinition = DatabaseSchema.Property(typeof(Assignment), "JobLink.ID").Editor as CodePopupEditor;
                Job.OtherColumns["JobNumber"] = "JobLink.JobNumber";
                Job.OtherColumns["Name"] = "JobLink.Name";
                ConfigureEditor(Job);
                
                GotoCurrentRequiredReport();
                
                LoadKanbans("Open");
            }
            finally
            {
                Calendar.EnableUpdate();
            }
        }

        public void Shutdown()
        {
        }
        
        private void LoadRequiredReports()
        {
            
            var unconfirmed = new Client<TimeSheet>().Query(
                new Filter<TimeSheet>(x => x.EmployeeLink.ID).IsEqualTo(Employee.ID).And(x => x.Confirmed).IsEqualTo(DateTime.MinValue)
                    .And(x => x.LeaveRequestLink).NotLinkValid(),
                new Columns<TimeSheet>(x => x.ID, x => x.Date, x => x.Start, x => x.Finish, x => x.Notes),
                new SortOrder<TimeSheet>(x => x.Date)
            );
            var id = Guid.Empty;
            var date = DateTime.MinValue;
            var start = TimeSpan.MaxValue;
            var end = TimeSpan.MinValue;
            var notes = new List<string>();
            foreach (var row in unconfirmed.Rows)
            {
                var curid = row.Get<TimeSheet, Guid>(x => x.ID);
                var curdate = row.Get<TimeSheet, DateTime>(c => c.Date).Date;
                var curstart = row.Get<TimeSheet, TimeSpan>(c => c.Start);
                var curend = row.Get<TimeSheet, TimeSpan>(c => c.Finish);
                var curnotes = row.Get<TimeSheet, string>(c => c.Notes);

                if (date != curdate)
                {
                    if (id != Guid.Empty)
                        RequiredReports.Add(new RequiredReport(id, date, start, end, string.Join("\n===================================\n", notes)));
                    id = curid;
                    date = curdate;
                    start = TimeSpan.MaxValue;
                    end = TimeSpan.MinValue;
                    notes.Clear();
                }

                start = start > curstart ? curstart : start;
                end = end < curend ? curend : end;
                if (!string.IsNullOrEmpty(curnotes))
                    notes.Add(curnotes);
            }

            if (id != Guid.Empty)
                RequiredReports.Add(new RequiredReport(id, date, start, end, string.Join("\n===================================\n", notes)));
        }
        
        public Employee Employee { get; set; }
        
        public event DataModelUpdateEvent? OnUpdateDataModel;

        public bool IsReady { get; set; }

        public void CreateToolbarButtons(IPanelHost host)
        {
        }

        public string SectionName => "Daily Report";

        public DataModel DataModel(Selection selected) =>  Calendar.DataModel(selected);

        public void Heartbeat(TimeSpan time)
        {
        }

        public void Refresh()
        {
            RefreshAssignments();
            LoadKanbans();
        }

        public Dictionary<string, object[]> Selected()
        {
            return new Dictionary<string, object[]>();
        }
        
        public event TimeSheetConfirmedEvent OnTimeSheetConfirmed;
        
        private void PopulateFavourites(ItemsControl menu, RoutedEventHandler action, DateTime time, bool filltime)
        {
            
            menu.Items.RemoveAt(0);
            var create = new MenuItem { Header = "Create New Assignment" };
            create.Tag = new Tuple<DateTime, AssignmentFavourite?>(time, null);
            create.Click += action;
            menu.Items.Insert(0,create);
            
            if (_settings.Favourites?.Any() == true)
            {
                menu.Items.Insert(1,new Separator());
                int i = 2;
                foreach (var favourite in _settings.Favourites)
                {
                    var fav = new MenuItem { Header = favourite.Title };
                    fav.Tag = new Tuple<DateTime, AssignmentFavourite?>(time, favourite);
                    fav.Click += action;
                    menu.Items.Insert(i,fav);
                    i++;
                }
            }
        }
        
        
        private void Assignments_OnCustomiseContextMenu(object sender, ICalendarDataEventArgs args)
        {
            if (sender is not ContextMenu menu)
                return;
            
            if (args is CalendarDataEventArgs<CalendarTimeSlot> slot)
            {
                PopulateFavourites(menu, CreateAssignment_Click, slot.Item.Time, false);
            }
            else if (args is CalendarDataEventArgs<AssignmentModel> model)
            {
                menu.Items.Insert(1,new Separator());
                var SetAsFavouriteMenu = new MenuItem { Header = GetFavourite(model.Item) == null ? "Set As Favourite" : "Update Favourite"};
                SetAsFavouriteMenu.Click += (o, args) => SetAsFavourite(model.Item);
                menu.Items.Insert(2,SetAsFavouriteMenu);

                if (_settings.Favourites.Any())
                {
                    var ManageFavouritesMenu = new MenuItem { Header = "Manage Favourites" };
                    ManageFavouritesMenu.Click += ManageFavourites_Click;
                    menu.Items.Insert(3,ManageFavouritesMenu);
                }

            }
        }
        

        private AssignmentFavourite? GetFavourite(AssignmentModel? model)
        {
            return model == null ? null : _settings.Favourites.FirstOrDefault(x => string.Equals(x.Title, model.Subject));
        }

        private void SetAsFavourite(AssignmentModel? model)
        {
            if (model == null)
            {
                MessageBox.Show("Please select an Assignment first!");
                return;
            }
            
            var bCreated = false;
            var favourite = GetFavourite(model);
            if (favourite == null)
            {
                bCreated = true;
                favourite = new AssignmentFavourite { Title = model.Subject };
                _settings.Favourites.Add(favourite);
            }

            favourite.JobID = model.JobID;
            favourite.JobNumber = model.JobNumber;
            favourite.ITPID = model.ItpID;
            favourite.ITPCode = model.ItpCode;
            favourite.ActivityID = model.ActivityID;
            favourite.ActivityColor = model.Color;
            favourite.ActivityName = model.ActivityCode;
            new UserConfiguration<DailyActivityScreenSettings>().Save(_settings);

            MessageBox.Show(bCreated ? "Favourite Created!" : "Favourite Updated!");
        }

        private void ManageFavourites_Click(object sender, RoutedEventArgs e)
        {
            new DailyReportFavouriteWindow(_settings.Favourites).ShowDialog();
            new UserConfiguration<DailyActivityScreenSettings>().Save(_settings);
        }

        private void ViewEmailInterfaceForm_Click(object sender, RoutedEventArgs e)
        {
            var form = new EmailInterfaceForm { FromDate = Calendar.SelectedDate, ToDate = Calendar.SelectedDate };
            form.ShowDialog();
            //UpdateDayButtons();
        }

        private void ProcessWindowTrackerMenu_Click(object sender, RoutedEventArgs e)
        {
            var history = new WindowTrackerSummary(Employee.ID, Calendar.SelectedDate);
            history.ShowDialog();
            //UpdateDayButtons();
        }

        private void CreateAssignment_Click(object sender, RoutedEventArgs e)
        {
            var fav = (sender as MenuItem)?.Tag as Tuple<DateTime, AssignmentFavourite?>;
            var start = fav != null ? fav.Item1.TimeOfDay : Calendar.SelectedDate.TimeOfDay;
            CreateNewAssignment(start, fav?.Item2);
        }

        private void CreateNewAssignment(TimeSpan start, AssignmentFavourite? favourite)
        {
            CalendarDataEvent populate = (sender, args) => PopulateFavourite(args.Item as Assignment, favourite);
            Calendar.ItemCreated += populate;
            var ass = Calendar.CreateAssignment(new CalendarTimeSlot(Employee.ID, Calendar.SelectedDate.Add(start)));
            Calendar.ItemCreated -= populate;
            SelectAssignment(ass);

        }

        private void PopulateFavourite(Assignment? assignment, AssignmentFavourite? favourite)
        {
            if (assignment == null)
                return;
            assignment.Title = favourite != null ? favourite.Title : "";
            assignment.JobLink.ID = favourite != null ? favourite.JobID : Guid.Empty;
            assignment.ITP.ID = favourite != null ? favourite.ITPID : Guid.Empty;
            assignment.ActivityLink.ID = favourite != null ? favourite.ActivityID : Guid.Empty;
            assignment.ActivityLink.Color = favourite != null ? favourite.ActivityColor : "";
            new Client<Assignment>().Save(assignment, "Created by Daily Report");
        }
        
 

        private void RefreshAssignments()
        {
            Calendar.Refresh();
        }

        private void Assignments_OnSelectionChanged(object sender, ICalendarDataEventArgs args)
        {
            if (args is CalendarDataEventArgs<Assignment> ass)
            {
                CheckandSaveAssignment();
                SelectAssignment(ass.Item);
            }
            else

                SelectAssignment(null);

        }

        private void CheckandSaveAssignment()
        {
            if (SelectedAssignment != null && SelectedAssignment.IsChanged())
            {
                new Client<Assignment>().Save(SelectedAssignment, "", (o, e) => { });
                //SelectedAssignment.CommitChanges();
            }
        }

        private void SelectAssignment(Assignment? assignment)
        {
            Logger.Send(LogType.Information, ClientFactory.UserID, "Into Assignment_SelectionChanged()");
            bSelectingAssignment = true;
            try
            {
                SelectedAssignment = assignment;
                var bOK = assignment != null;

                //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (1/9): Setting Title");
                SetEditorValue(Title, bOK ? assignment.Title : "", bOK);

                //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (2/9): Setting Description");
                SetEditorValue(ActivityNotes, bOK ? assignment.Description : "", bOK);

                //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (3/9): Setting Start/Duration/Finish");
                SetEditorValue(Start, bOK ? assignment.Actual.Start : TimeSpan.MinValue, bOK);
                SetEditorValue(Duration, bOK ? assignment.Actual.Finish - assignment.Actual.Start : TimeSpan.MinValue, bOK);
                SetEditorValue(Finish, bOK ? assignment.Actual.Finish : TimeSpan.MinValue, bOK);

                var jobid = Job.Value;

                //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (4/9): Setting JobLink");
                SetEditorValue(Job, bOK ? assignment.JobLink.ID : Guid.Empty, bOK);

                if (bOK && !Equals(jobid, Job.Value))
                    //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (5/9): Configuring ITP");
                    ConfigureEditor(ITP);

                //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (6/9): Setting ITP");
                SetEditorValue(ITP, bOK ? assignment.ITP.ID : Guid.Empty, bOK);

                //if (bOK)
                //{
                //    //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (7/9): Configuring Activity");
                //    ConfigureEditor(Activity);
                //}
                //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (8/9): Setting Activity");
                //SetEditorValue(Activity, bOK ? assignment.ActivityLink.ID : Guid.Empty, bOK);
                Activity.Value = bOK ? assignment.ActivityLink.ID : Guid.Empty;
                Activity.IsEnabled = bOK;

                //if (bOK)
                //{
                //    //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (9/9): Configuring Task");
                //    ConfigureEditor(Kanban);
                //}

                //Logger.Send(LogType.Information, ClientFactory.UserID, "ASC (8/9): Setting Task");
                //SetEditorValue(Kanban, bOK ? assignment.Task.ID : Guid.Empty, bOK);
                Kanban.Value = bOK ? assignment.Task.ID : Guid.Empty;
                Kanban.IsEnabled = bOK;

                Job.IsEnabled = bOK ? !assignment.Task.IsValid() : false;

                if (assignment != null)
                {
                    if (string.IsNullOrWhiteSpace(Title.Value))
                        Title.SetFocus();
                    else
                        Notes.SetFocus();
                }
            }
            finally
            {
                bSelectingAssignment = false;
            }

            Logger.Send(LogType.Information, ClientFactory.UserID, "Out Of Assignment_SelectionChanged()");
        }

        private void ConfigureEditor(BaseDynamicEditorControl editor, BaseEditor? definition = null)
        {
            editor.Host = this;
            if (definition != null)
                editor.EditorDefinition = definition;
            editor.Configure();
            editor.Loaded = true;
        }

        private void SetEditorValue(BaseDynamicEditorControl editor, object value, bool enabled)
        {
            editor.Loaded = false;
            editor.SetValue(editor.ColumnName, value);
            editor.IsEnabled = enabled;
            editor.Loaded = true;
        }

        private void Assignments_OnItemChanged(object sender, ICalendarDataEventArgs args)
        {
            if (args is CalendarDataEventArgs<Assignment> ass)
            {
                if (ass.Item.ID == Guid.Empty)
                    using (new WaitCursor())
                    {
                        ass.Item.Actual.Duration = new TimeSpan(0, 30, 0);
                        new Client<Assignment>().Save(ass.Item, "Created from Daily Report Drag & Drop");
                    }
            }
        }
        
        private void EditorValueChanged(IDynamicEditorControl sender, Dictionary<string, object> values)
        {
            if (SelectedAssignment == null || bSelectingAssignment)
                return;

            DumpAssignmentValues(SelectedAssignment);

            var before = SelectedAssignment.GetValues(true);
            foreach (var key in values.Keys)
            {
                CoreUtils.SetPropertyValue(SelectedAssignment, key, values[key]);
                if (key.Equals("Task.ID")) 
                    Job.IsEnabled = values[key] == null || ((Guid)values[key]).Equals(Guid.Empty);
                if (key.Equals("JobLink.ID"))
                {
                    ConfigureEditor(ITP);
                    SelectedAssignment.ITP.ID = Guid.Empty;
                }
            }

            var after = SelectedAssignment.GetValues(true);

            var changes = before.Keys.Where(x =>
                !values.Keys.Contains(x) && ((before[x] == null && after[x] != null) || (before[x] != null && !before[x].Equals(after[x]))));

            foreach (var change in changes)
                if (change.Equals("Actual.Start"))
                    SetEditorValue(Start, SelectedAssignment.Actual.Start, Start.IsEnabled);
                else if (change.Equals("Actual.Duration"))
                    SetEditorValue(Duration, SelectedAssignment.Actual.Duration, Duration.IsEnabled);
                else if (change.Equals("Actual.Finish"))
                    SetEditorValue(Finish, SelectedAssignment.Actual.Finish, Finish.IsEnabled);

            if (SelectedAssignment.Actual.Duration < new TimeSpan(0, 15, 0))
            {
                SelectedAssignment.Actual.Duration = new TimeSpan(0, 15, 0);
                SetEditorValue(Duration, SelectedAssignment.Actual.Duration, Duration.IsEnabled);
                SelectedAssignment.Actual.Finish = SelectedAssignment.Actual.Start.Add(SelectedAssignment.Actual.Duration);
                SetEditorValue(Finish, SelectedAssignment.Actual.Finish, Finish.IsEnabled);
            }

            if (SelectedAssignment.IsChanged())
            {
                new Client<Assignment>().Save(SelectedAssignment, "", 
                    (o, e) => 
                    {
                        if (e != null)
                            Logger.Send(LogType.Error, "", String.Format("Error Updating Assignment: {0}\n{1}", e.Message, e.StackTrace));
                    }
                );

                Calendar.UpdateAssignment(SelectedAssignment);
            }
        }

        private void DumpAssignmentValues(Assignment assignment)
        {
            Logger.Send(LogType.Information, "",
                string.Format("Updating Assignment: Start:{0} Duration={1} Finish={2}", assignment.Actual.Start, assignment.Actual.Duration, assignment.Actual.Finish));
        }

        private void TimeSheetEditorValueChanged(IDynamicEditorControl sender, Dictionary<string, object> values)
        {
            if (RequiredReportIndex < 0 || RequiredReportIndex >= RequiredReports.Count)
                return;

            var report = RequiredReports[RequiredReportIndex];
            report.Notes = sender.GetValue(sender.ColumnName) as string;

            var timesheet = new TimeSheet
            {
                ID = report.ID,
                Notes = report.Notes
            };
            new Client<TimeSheet>().Save(timesheet, "", (o, e) => { });
        }

        private void Activity_OnDefineLookups(ILookupEditorControl sender)
        {
            var editor = sender.EditorDefinition as ILookupEditor;
            var colname = sender.ColumnName;
            var assignment = new Assignment();
            assignment.EmployeeLink.ID = Employee.ID;
            var values = editor.Values(colname, new[] { assignment });
            sender.LoadLookups(values);
        }

        private void Task_OnDefineLookups(ILookupEditorControl sender)
        {
            var editor = sender.EditorDefinition as ILookupEditor;
            var colname = sender.ColumnName;
            var assignment = new Assignment();
            assignment.EmployeeLink.ID = Employee.ID;
            var values = editor.Values(colname, new[] { assignment });
            sender.LoadLookups(values);
        }

        private void ITP_OnDefineLookups(ILookupEditorControl sender)
        {
            var editor = sender.EditorDefinition as ILookupEditor;
            var colname = sender.ColumnName;
            var values = editor.Values(colname, SelectedAssignment == null ? new Assignment[] { } : new[] { SelectedAssignment });
            sender.LoadLookups(values);
        }

        private void FirstDay_Click(object sender, RoutedEventArgs e)
        {
            RequiredReportIndex = 0;
            GotoCurrentRequiredReport();
        }

        private void SetCurrentDay(DateTime date)
        {
            bProgramaticallyChanging = true;
            DatePicker.SelectedDate = date;
            bProgramaticallyChanging = false;
            ConfigureBookingsList();
        }

        private void PrevDay_Click(object sender, RoutedEventArgs e)
        {
            var requiredreport = RequiredReports.OrderBy(x => x.Date).LastOrDefault(x => x.Date < DatePicker.SelectedDate);
            if (requiredreport != null)
                SetCurrentDay(requiredreport.Date);
        }

        private void NextDay_Click(object sender, RoutedEventArgs e)
        {
            var requiredreport = RequiredReports.OrderBy(x => x.Date).FirstOrDefault(x => x.Date > DatePicker.SelectedDate);
            if (requiredreport != null)
                SetCurrentDay(requiredreport.Date);
        }


        private void LastDay_Click(object sender, RoutedEventArgs e)
        {
            RequiredReportIndex = RequiredReports.Count - 1;
            GotoCurrentRequiredReport();
        }

        private void DatePicker_SelectedDateChanged(object sender, SelectionChangedEventArgs e)
        {
            if (!bProgramaticallyChanging)
                ConfigureBookingsList();
        }

        private void ConfigureBookingsList()
        {
            DatePicker.HighlightedDates = RequiredReports.Select(x => new HighlightedDate(x.Date, "Report Required")).ToList();

            FirstDay.IsEnabled = RequiredReports.Count > 0 && DatePicker.SelectedDate > RequiredReports[0].Date; //RequiredReportIndex > 0;
            FirstDay.Content = new Image
            {
                Source = FirstDay.IsEnabled
                    ? PRSDesktop.Resources.first.AsBitmapImage(32, 32)
                    : PRSDesktop.Resources.first.Fade(0.2F).AsBitmapImage(32, 32)
            };

            PrevDay.IsEnabled = RequiredReports.Count > 0 && DatePicker.SelectedDate > RequiredReports[0].Date; //RequiredReportIndex > 0;
            PrevDay.Content = new Image
            {
                Source = PrevDay.IsEnabled
                    ? PRSDesktop.Resources.back.AsBitmapImage(32, 32)
                    : PRSDesktop.Resources.back.Fade(0.2F).AsBitmapImage(32, 32)
            };

            NextDay.IsEnabled =
                RequiredReports.Count > 0 &&
                DatePicker.SelectedDate < RequiredReports[RequiredReports.Count - 1].Date; //RequiredReportIndex < RequiredReports.Count - 1;
            NextDay.Content = new Image
            {
                Source = NextDay.IsEnabled
                    ? PRSDesktop.Resources.next.AsBitmapImage(32, 32)
                    : PRSDesktop.Resources.next.Fade(0.2F).AsBitmapImage(32, 32)
            };

            LastDay.IsEnabled =
                RequiredReports.Count > 0 &&
                DatePicker.SelectedDate < RequiredReports[RequiredReports.Count - 1].Date; //RequiredReportIndex < RequiredReports.Count - 1;
            LastDay.Content = new Image
            {
                Source = LastDay.IsEnabled
                    ? PRSDesktop.Resources.last.AsBitmapImage(32, 32)
                    : PRSDesktop.Resources.last.Fade(0.2F).AsBitmapImage(32, 32)
            };

            Calendar.SelectedDate = DatePicker.SelectedDate.Value.Date; // RequiredReports[RequiredReportIndex].Item2.Date;

            //Assignments.Refresh();
            //Assignments.StartHour = 0;
            //Assignments.EndHour = 24;

            var start = TimeSpan.FromHours(6);
            var finish = TimeSpan.FromHours(18);
            if ((DatePicker.SelectedDate.Value == DateTime.Today) && (DateTime.Now.TimeOfDay > finish))
                finish = DateTime.Now.TimeOfDay;
            String notes = "";
            
            var blocks = Calendar.GetRoster(Employee.ID, DatePicker.SelectedDate.Value)?.GetBlocks(DatePicker.SelectedDate.Value, TimeSpan.FromSeconds(0), TimeSpan.FromDays(1));
            if (blocks?.Any() == true)
            {
                start = blocks.Aggregate(start, (time, block) => time.Ticks < block.Start.Ticks ? time : block.Start);
                finish = blocks.Aggregate(finish, (time, block) => time.Ticks > block.Finish.Ticks ? time : block.Start);
            }
            
            var requiredreport = RequiredReports.FirstOrDefault(x => x.Date.Equals(DatePicker.SelectedDate)); //[RequiredReportIndex];
            if (requiredreport != null)
            {
                start = start > requiredreport.Start ? requiredreport.Start : start;
                finish = finish < requiredreport.Finish ? requiredreport.Finish : finish;
                notes = requiredreport.Notes;
            }
            else
            {
                var row = new Client<TimeSheet>().Query(
                    new Filter<TimeSheet>(x => x.Date).IsEqualTo(DatePicker.SelectedDate.Value).And(x => x.EmployeeLink.UserLink.ID).IsEqualTo(ClientFactory.UserGuid),
                    new Columns<TimeSheet>(
                        x => x.Start,
                        x => x.Finish,
                        x => x.Notes
                    )
                ).Rows.FirstOrDefault();
                if (row != null)
                { 
                    notes = requiredreport.Notes;
                    var tstart = row.Get<TimeSheet, TimeSpan>(x => x.Start);
                    start = start > tstart ? tstart : start;
                    var tfinish = row.Get<TimeSheet, TimeSpan>(x => x.Finish);
                    finish = finish < tfinish ? tfinish : finish;

                }
            }
            
            if (IsReady)
                Calendar.Refresh();
            Calendar.GetActiveWindow(Employee.ID, DatePicker.SelectedDate.Value, ref start, ref finish);
            
            Calendar.StartHour = start.Floor(TimeSpan.FromHours(1)).Hours; 
            Calendar.EndHour = finish.Ceiling(TimeSpan.FromHours(1)).Hours;
            Notes.Value = notes;
            
            SelectAssignment(null);

            EnableScreen(requiredreport != null);
        }

        private void EnableScreen(bool enabled)
        {
            Title.IsEnabled = enabled && (SelectedAssignment != null);
            ActivityNotes.IsEnabled = enabled && (SelectedAssignment != null);
            Start.IsEnabled = enabled && (SelectedAssignment != null);
            Duration.IsEnabled = enabled && (SelectedAssignment != null);
            Finish.IsEnabled = enabled && (SelectedAssignment != null);
            Kanban.IsEnabled = enabled && (SelectedAssignment != null);
            ITP.IsEnabled = enabled && (SelectedAssignment != null);
            Job.IsEnabled = enabled && (SelectedAssignment != null);
            Activity.IsEnabled = enabled && (SelectedAssignment != null);

            Notes.IsEnabled = enabled;
            
            ProcessWindowTrackers.IsEnabled = enabled;
            ImportEmails.IsEnabled = enabled;
            ConfirmTimesheet.IsEnabled = enabled;
            Calendar.IsEnabled = enabled;
        }

        private void Splitpanel_OnChanged(object sender, DynamicSplitPanelSettings e)
        {
            _settings.ActivityColumnWidth = e.AnchorWidth;
            new UserConfiguration<DailyActivityScreenSettings>().Save(_settings);
        }

        private void ConfirmTimesheet_Click(object sender, RoutedEventArgs e)
        {
            var bBlankActivities = false;
            var bOverlapping = true;

            var rows = Calendar.GetAssignments(Employee.ID, DatePicker.SelectedDate.Value);
            foreach (var row in rows)
            {
                var id = row.Get<Assignment, Guid>(c => c.ID);
                var date = row.Get<Assignment, DateTime>(c => c.Date);
                var start = row.Get<Assignment, TimeSpan>(c => c.Actual.Start);
                var finish = row.Get<Assignment, TimeSpan>(c => c.Actual.Finish);
                if (rows.Any(r =>
                        r.Get<Assignment, Guid>(c => c.ID) != id
                        && r.Get<Assignment, DateTime>(c => c.Date) == date
                        && r.Get<Assignment, TimeSpan>(c => c.Actual.Finish) > start
                        && r.Get<Assignment, TimeSpan>(c => c.Actual.Start) < finish
                    ))
                    bOverlapping = false;

                if (Security.IsAllowed<RequireActivityCodesOnDailyReports>())
                    bBlankActivities = rows.Any(r => !Entity.IsEntityLinkValid<Assignment, AssignmentActivityLink>(x => x.ActivityLink, r));
            }

            if (!bOverlapping)
            {
                MessageBox.Show("This report contains overlapping blocks!\n\nPlease correct before confirming this timesheet.");
                return;
            }

            if (bBlankActivities)
            {
                MessageBox.Show("All Daily Report entries must have a valid Activity Code!\n\nPlease correct before confirming this timesheet.");
                return;
            }


            if (MessageBox.Show(
                    "Confirming your timesheet will prevent you from making any further changes or additions.\n\nAre you sure you want to do this?",
                    "Confirm TimeSheet", MessageBoxButton.YesNo, MessageBoxImage.Warning) != MessageBoxResult.Yes)
                return;

            using (new WaitCursor())
            {
                var timesheets = new Client<TimeSheet>().Query(
                    new Filter<TimeSheet>(x => x.EmployeeLink.ID).IsEqualTo(Employee.ID).And(x => x.Date).IsEqualTo(Calendar.SelectedDate),
                    new Columns<TimeSheet>(x => x.ID, x => x.Confirmed)
                ).Rows.Select(r => r.ToObject<TimeSheet>()).ToArray();
                for (var i = 0; i < timesheets.Length; i++) timesheets[i].Confirmed = DateTime.Now;
                new Client<TimeSheet>().Save(timesheets, "Confirmed by Daily Activity Report");
                RequiredReports.RemoveAll(x => x.Date.Equals(Calendar.SelectedDate));

                if (!RequiredReports.Any())
                {
                    var start = TimeSpan.FromSeconds(0);
                    var finish = TimeSpan.FromDays(1);
                    var blocks = Calendar.GetRoster(Employee.ID, DatePicker.SelectedDate.Value)?.GetBlocks(DatePicker.SelectedDate.Value, start, finish);
                    if (blocks?.Any() == true)
                    {
                        start = blocks.Aggregate(start, (time, block) => time.Ticks < block.Start.Ticks ? time : block.Start);
                        finish = blocks.Aggregate(finish, (time, block) => time.Ticks > block.Finish.Ticks ? time : block.Start);
                    }
                    RequiredReports.Add(new RequiredReport(Guid.Empty, DateTime.Today, start, finish, ""));
                    ConfirmDock.Visibility = Visibility.Collapsed;
                }

                GotoCurrentRequiredReport();

                OnTimeSheetConfirmed?.Invoke(new TimeSheetConfirmedArgs { Date = Calendar.SelectedDate });
            }
        }

        private void GotoCurrentRequiredReport()
        {
            if (RequiredReportIndex >= RequiredReports.Count)
                RequiredReportIndex = RequiredReports.Count - 1;
            SetCurrentDay(RequiredReports[RequiredReportIndex].Date);
        }

        private void LoadKanbans(string category = null)
        {
            if (!string.IsNullOrWhiteSpace(category))
                _taskcategory = category;
            Tasks.ItemsSource = null;

            var filter = new Filter<KanbanSubscriber>(x => x.Kanban.Closed).IsEqualTo(DateTime.MinValue).And(x => x.Kanban.Category)
                .IsEqualTo(_taskcategory);
            if (ShowPublicTasks.IsChecked != true)
                filter = filter.And(x => x.Kanban.Private).IsEqualTo(true);
            filter = filter.And(x => x.Employee.UserLink.ID).IsEqualTo(ClientFactory.UserGuid);
            filter = filter.And(x => x.Assignee).IsEqualTo(true);

            new Client<KanbanSubscriber>().Query(
                filter,
                new Columns<KanbanSubscriber>
                (
                    x => x.Kanban.ID,
                    x => x.Kanban.DueDate,
                    x => x.Kanban.Completed,
                    x => x.Kanban.Description,
                    x => x.Kanban.Summary,
                    x => x.Kanban.Category,
                    x => x.Kanban.EmployeeLink.ID,
                    x => x.Kanban.EmployeeLink.UserLink.ID,
                    x => x.Kanban.EmployeeLink.Name,
                    x => x.Kanban.ManagerLink.ID,
                    x => x.Kanban.ManagerLink.UserLink.ID,
                    x => x.Kanban.ManagerLink.Name,
                    x => x.Kanban.Notes,
                    x => x.Kanban.Title,
                    x => x.Kanban.JobLink.ID,
                    x => x.Kanban.JobLink.JobNumber,
                    x => x.Kanban.JobLink.Name,
                    x => x.Kanban.Type.Code,
                    x => x.Kanban.Number
                ),
                new SortOrder<KanbanSubscriber>(x => x.Kanban.DueDate),
                (kanbans, error) =>
                {
                    Dispatcher.Invoke(() =>
                    {
                        foreach (var column in kanbans.Columns)
                            column.ColumnName = column.ColumnName.Replace("Kanban.", "");
                        Tasks.ItemsSource = kanbans.Rows.Select(x => x.ToObject<Kanban>());
                    });
                }
            );
        }

        private void OpenTasks_Click(object sender, RoutedEventArgs e)
        {
            LoadKanbans("Open");
            CurrentTasks.SetValue(Grid.RowProperty, 6);
            WaitingTasks.SetValue(Grid.RowProperty, 7);
            ClosedTasks.SetValue(Grid.RowProperty, 8);
        }

        private void CurrentTasks_Click(object sender, RoutedEventArgs e)
        {
            LoadKanbans("In Progress");
            CurrentTasks.SetValue(Grid.RowProperty, 2);
            WaitingTasks.SetValue(Grid.RowProperty, 7);
            ClosedTasks.SetValue(Grid.RowProperty, 8);
        }

        private void WaitingTasks_Click(object sender, RoutedEventArgs e)
        {
            LoadKanbans("Waiting");
            CurrentTasks.SetValue(Grid.RowProperty, 2);
            WaitingTasks.SetValue(Grid.RowProperty, 3);
            ClosedTasks.SetValue(Grid.RowProperty, 8);
        }

        private void ClosedTasks_Click(object sender, RoutedEventArgs e)
        {
            LoadKanbans("Complete");
            CurrentTasks.SetValue(Grid.RowProperty, 2);
            WaitingTasks.SetValue(Grid.RowProperty, 3);
            ClosedTasks.SetValue(Grid.RowProperty, 4);
        }

        private void Tasks_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            var startPoint = e.GetPosition(null);
        }

        // Helper to search up the VisualTree
        private static T FindAncestor<T>(DependencyObject current)
            where T : DependencyObject
        {
            try
            {
                do
                {
                    if (current is T) return (T)current;
                    current = VisualTreeHelper.GetParent(current);
                } while (current != null);
            }
            catch (Exception e)
            {
                Logger.Send(LogType.Error, "", string.Format("*** Unknown Error: {0}\n{1}", e.Message, e.StackTrace));
            }

            return null;
        }


        private void Tasks_MouseMove(object sender, MouseEventArgs e)
        {
            // Get the current mouse position
            var mousePos = e.GetPosition(null);
            var diff = startPoint - mousePos;

            if (e.LeftButton == MouseButtonState.Pressed &&
                (Math.Abs(diff.X) > SystemParameters.MinimumHorizontalDragDistance ||
                 Math.Abs(diff.Y) > SystemParameters.MinimumVerticalDragDistance))
            {
                // Get the dragged ListViewItem
                var listView = sender as ListView;
                var depobj = (DependencyObject)e.OriginalSource;
                var kanban = listView.SelectedItem as Kanban;
                if (kanban != null)
                {
                    var dragData = new DataObject("Comal.Classes.Kanban", kanban);
                    DragDrop.DoDragDrop(depobj, dragData, DragDropEffects.Move);
                }
            }
        }

        private void NewTask_Click(object sender, RoutedEventArgs e)
        {
            var task = new Kanban();
            task.EmployeeLink.ID = Employee.ID;
            task.ManagerLink.ID = Employee.ID;
            task.Private = true;
            task.Category = "Open";

            if(DynamicGridUtils.CreateDynamicGrid(typeof(DynamicDataGrid<>), typeof(Kanban)).EditItems(new[] { task }))
            {
                using (new WaitCursor())
                {
                    /*var task = new Kanban();
                    task.Title = form.Title;
                    task.Description = form.Description;
                    task.DueDate = DateTime.Today;
                    task.EmployeeLink.ID = Employee.ID;
                    task.ManagerLink.ID = Employee.ID;
                    task.Category = "Open";
                    task.Private = true;*/
                    new Client<Kanban>().Save(task, "Created from Daily Report screen");
                    /*var subscriber = new KanbanSubscriber();
                    subscriber.Kanban.ID = task.ID;
                    subscriber.Employee.ID = Employee.ID;
                    subscriber.Assignee = true;
                    subscriber.Manager = true;
                    new Client<KanbanSubscriber>().Save(subscriber, "");*/
                    LoadKanbans();
                }
            }

            //var form = new QuickTask();
            //if (form.ShowDialog() == true)
        }

        private void ShowPublicTasks_Checked(object sender, RoutedEventArgs e)
        {
            LoadKanbans();
        }

        private void Tasks_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            var listview = sender as ListView;
            if (listview == null)
                return;
            var kanban = listview.SelectedItem as Kanban;
            if (kanban == null)
                return;

            if (kg == null)
                kg = new KanbanGrid();

            var bEdited = kg.EditItems(new[] { kanban });
            if (bEdited)
                LoadKanbans();
        }

        private void TaskMenu_ContextMenuOpening(object sender, ContextMenuEventArgs e)
        {
            var kanban = (sender as Border).Tag as Kanban;
            var menu = (sender as Border).ContextMenu;
            menu.Items.Clear();

            if (!string.Equals(_taskcategory, "Open"))
                MoveToOpen = CreateTaskMenu(menu, "Move To [Open Tasks]", kanban, MoveTask_Click);

            if (!string.Equals(_taskcategory, "In Progress"))
                MoveToCurrent = CreateTaskMenu(menu, "Move To [Tasks In Progress]", kanban, MoveTask_Click);
            else
                menu.Items.Add(new Separator());

            if (!string.Equals(_taskcategory, "Waiting"))
                MoveToWaiting = CreateTaskMenu(menu, "Move To [Waiting For Others]", kanban, MoveTask_Click);
            else
                menu.Items.Add(new Separator());

            if (!string.Equals(_taskcategory, "Complete"))
                MoveToComplete = CreateTaskMenu(menu, "Move To [Completed Tasks]", kanban, MoveTask_Click);

            menu.Items.Add(new Separator());

            CreateTaskMenu(menu, "Change Due Date", kanban, ChangeKanbanDueDate_Click);
        }

        private MenuItem CreateTaskMenu(ContextMenu menu, string header, Kanban kanban, RoutedEventHandler action)
        {
            var item = new MenuItem();
            item.Header = header;
            item.Tag = kanban;
            item.Click += action;
            menu.Items.Add(item);
            return item;
        }

        private void ChangeKanbanDueDate_Click(object sender, RoutedEventArgs e)
        {
            var kanban = (sender as MenuItem)?.Tag as Kanban;
            var date = kanban.DueDate;
            if (DateEdit.Execute("Change Due Date", ref date))
            {
                kanban.DueDate = date;
                new Client<Kanban>().Save(kanban, "");
                LoadKanbans();
            }
        }


        private void MoveTask_Click(object sender, RoutedEventArgs e)
        {
            var kanban = (sender as MenuItem)?.Tag as Kanban;
            if (kanban == null)
                return;
            var category = sender == MoveToComplete
                ? "Complete"
                : sender == MoveToWaiting
                    ? "Waiting"
                    : sender == MoveToCurrent
                        ? "In Progress"
                        : "Open";
            kanban.Category = category;
            new Client<Kanban>().Save(kanban, "");
            LoadKanbans();
        }


        private void Assignments_OnItemEditing(object sender, ICalendarHandledEventArgs args)
        {
            args.Status = CalendarHandledStatus.Handled;
        }


    }
}