using System;
using System.Linq;
using Comal.Classes;
using InABox.Core;
using InABox.Mobile;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using XF.Material.Forms.UI.Dialogs;
using PRSSecurity = InABox.Core.Security;

namespace PRS.Mobile
{
    
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class AssignmentEditDetailsView
    {
        
        public AssignmentEditDetailsView()
        {
            InitializeComponent();
        }

        public override void Refresh()
        {
            bool open = ViewModel.Item.Completed.IsEmpty();

            Completed.Text = open
                ? "Complete"
                : Security.CanEdit<Assignment>() ? "Re-Open" : $"Completed {ViewModel.Item.Completed:dd/MM/yy}";

            Subject.IsEnabled = open && PRSSecurity.CanEdit<Assignment>();
            BookedStart.IsEnabled = open && PRSSecurity.IsAllowed<CanEditAssignmentBookings>();
            BookedFinish.IsEnabled = open && PRSSecurity.IsAllowed<CanEditAssignmentBookings>();
            ActualStart.IsEnabled = open && PRSSecurity.IsAllowed<CanEditAssignmentActualTimes>();
            ActualFinish.IsEnabled = open && PRSSecurity.IsAllowed<CanEditAssignmentActualTimes>();
            //AsBookedBtn.IsEnabled = open && PRSSecurity.IsAllowed<CanEditAssignmentActualTimes>();

            Job.IsEnabled = open && PRSSecurity.CanEdit<Assignment>();
            Task.IsEnabled = open && PRSSecurity.CanEdit<Assignment>();
            Activity.IsEnabled = open && PRSSecurity.CanEdit<Assignment>();
            Description.IsEnabled = open && PRSSecurity.CanEdit<Assignment>();
            Completed.IsEnabled = open || PRSSecurity.CanEdit<Assignment>();
        }

        private void Activity_Clicked(object sender, EventArgs e)
        {
            ShowPopup(() => CreateActivitySelection("Select Activity", (activity) =>
            {
                ViewModel.Item.ActivityID = activity.ID;
                ViewModel.Item.ActivityCode = activity.Code;
                ViewModel.Item.ActivityDescription = activity.Description;
                DoChanged("ActivityID");
            }));
        }

        private View CreateActivitySelection(String caption, Action<ActivityShell> selected)
        {
            SelectionView selection = new SelectionView
            {
                VerticalOptions = LayoutOptions.Fill,
                HorizontalOptions = LayoutOptions.Fill
            };
            selection.Configure += (sender, args) =>
            {
                args.Columns
                    .BeginUpdate()
                    .Clear()
                    .Add(new MobileGridTextColumn<ActivityShell>() { Column = x => x.Code, Width = GridLength.Auto })
                    .Add(new MobileGridTextColumn<ActivityShell>()
                    {
                        Column = x => x.Description, Width = GridLength.Star, Caption = caption,
                        Alignment = TextAlignment.Start
                    })
                    .EndUpdate();
            };
            selection.Refresh += (sender, args) =>
            {
                App.Data.Activities.Refresh(false);
                return App.Data.Activities.Search((x=>x.IsLeave == false));
            };
            
            selection.SelectionChanged += (sender, args) =>
            {
                selected(args.SelectedItems.FirstOrDefault() as ActivityShell);
                DismissPopup();
            };
            selection.Load();
            return selection;
        }

        private void SelectJob_Clicked(object sender, EventArgs e)
        {
            ShowPopup(
                () => CreateJobSelection("Select Job", (job) =>
                {
                    ViewModel.Item.JobID = job.ID;
                    ViewModel.Item.JobNumber = job.JobNumber;
                    ViewModel.Item.JobName = job.Name;
                    ViewModel.Item.Latitude = job.Location.Latitude;
                    ViewModel.Item.Longitude = job.Location.Longitude;
                    DoChanged("JobID");
                })
            );
        }
        
        private View CreateJobSelection(String caption, Action<JobShell> selected)
        {
            SelectionView selection = new SelectionView
            {
                VerticalOptions = LayoutOptions.Fill,
                HorizontalOptions = LayoutOptions.Fill,
                CanSearch = true
            };
            selection.Configure += (sender, args) =>
            {
                args.Columns
                    .BeginUpdate()
                    .Clear()
                    .Add(new MobileGridTextColumn<JobShell>() { Column = x=>x.JobNumber, Width = GridLength.Auto, Caption = "#"})
                    .Add(new MobileGridTextColumn<JobShell>() { Column = x=>x.Name, Width = GridLength.Star, Caption = caption, Alignment = TextAlignment.Start})
                    .EndUpdate();
                args.Filters.AddRange(App.Data.Jobs.AvailableFilters().Where(x=> x != null).Select(x=>x.Name));
            };
            selection.Refresh += (sender, args) =>
            {
                var result = App.Data.Jobs.Refresh(args.Force);
                args.LastUpdated = App.Data.Jobs.LastUpdated;
                return result;
            };
            selection.SelectionChanged += (sender, args) =>
            {
                selected(args.SelectedItems.FirstOrDefault() as JobShell);
                DismissPopup();
            };
            selection.Load();
            return selection;
        }

        private void Task_Clicked(object sender, EventArgs e)
        {
            ShowPopup(() => CreateTaskSelection("Select Task", (kanban) =>
            {
                ViewModel.Item.TaskID = kanban.ID;
                ViewModel.Item.TaskNumber = kanban.Number;
                ViewModel.Item.TaskName = kanban.Title;
                DoChanged("TaskID");
            }));
        }
        
        private View CreateTaskSelection(String caption, Action<KanbanShell> selected)
        {
            SelectionView selection = new SelectionView
            {
                VerticalOptions = LayoutOptions.Fill,
                HorizontalOptions = LayoutOptions.Fill
            };
            selection.Configure += (sender, args) =>
            {
                args.Columns
                    .BeginUpdate()
                    .Clear()
                    .Add(new MobileGridIntegerColumn<KanbanShell>() { Column = x=>x.Number, Width = GridLength.Auto, Caption = "#"})
                    .Add(new MobileGridTextColumn<KanbanShell>() { Column = x=>x.Title, Width = GridLength.Star, Caption = caption, Alignment = TextAlignment.Start})
                    .EndUpdate();
            };
            selection.Refresh += (sender, args) => App.Data.Kanbans.Refresh(false);
            selection.SelectionChanged += (sender, args) =>
            {
                selected(args.SelectedItems.FirstOrDefault() as KanbanShell);
                DismissPopup();
            };
            selection.Load();
            return selection;
        }

        private async void Complete_Clicked(object sender, EventArgs e)
        {
            if (!ViewModel.Item.Completed.IsEmpty())
            {
                ViewModel.Item.Completed = DateTime.MinValue;
                ViewModel.Item.Save("Re-opened on Mobile Device");
                Refresh();
                return;
            }

            bool bOpenForms = ViewModel.Forms.Any(x => x.Completed.IsEmpty());
            if (bOpenForms)
            {
                await MaterialDialog.Instance.AlertAsync("Please finish all open forms before completing this assignment", "Open Forms Found");
                return;
            }
            bool bConfirm = await MaterialDialog.Instance.ConfirmAsync(message: "Complete Assignment?",
                confirmingText: "Yes",
                dismissiveText: "No") == true;
            if (bConfirm)
            {
                ViewModel.Item.Completed = DateTime.Now;
                ViewModel.Item.Save("Completed on Mobile Device");
                Navigation.PopAsync();
            }
        }

        private void Description_OnTextChanged(object sender, TextChangedEventArgs e)
        {
            if (Description.IsFocused)
                DoChanged("Description");
        }

        private void Subject_OnTextChanged(object sender, TextChangedEventArgs e)
        {
            if (Subject.IsFocused)
                DoChanged("Subject");
        }
      
        private void BookedStart_OnChanged(object sender, TimeButtonChangedArgs args)
        {
            DoChanged("BookedStart");
            if (ViewModel.Item.BookedStart > ViewModel.Item.BookedFinish)
            {
                ViewModel.Item.BookedFinish = ViewModel.Item.BookedStart;
                DoChanged("BookedFinish");
            }
        }

        private void ActualStart_OnChanged(object sender, TimeButtonChangedArgs args)
        {
            DoChanged("ActualStart");
            if (ViewModel.Item.ActualStart > ViewModel.Item.ActualFinish)
            {
                ViewModel.Item.ActualFinish = ViewModel.Item.ActualStart;
                DoChanged("ActualFinish");
            }
        }

        private void BookedFinish_OnChanged(object sender, TimeButtonChangedArgs args)
        {
            if (ViewModel.Item.BookedStart > ViewModel.Item.BookedFinish)
                ViewModel.Item.BookedFinish = ViewModel.Item.BookedStart;
            DoChanged("BookedFinish");
        }

        private void ActualFinish_OnChanged(object sender, TimeButtonChangedArgs args)
        {
            if (ViewModel.Item.ActualStart > ViewModel.Item.ActualFinish)
                ViewModel.Item.ActualFinish = ViewModel.Item.ActualStart;
            DoChanged("ActualFinish");
        }
    }
}