using System;
using System.Linq;
using System.Linq.Expressions;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using XF.Material.Forms.UI;
using XF.Material.Forms.UI.Dialogs;

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

        public override void Refresh()
        {
            _forms.DataModel = ViewModel?.Forms;
            _forms.AppliesTo = "Assignment";
            _forms.Property = model => ViewModel?.Forms.Items.OfType<IDigitalFormInstanceShell>().ToArray();
            _forms.RefreshData(true,false);
            NoForms.IsVisible = ViewModel?.Forms.Any() != true;
            _forms.IsVisible = ViewModel?.Forms.Any() == true;

            
        }

        private async void _forms_OnFormTapped(object sender, ExistingFormTappedEventArgs args)
        {
            if (args.Shell is AssignmentFormShell instance)
            {
                using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Loading"))
                {
					// Pretty sure this can be replaced with _forms.EditFormAsync<>(instance, ViewModel.Item.Entity)
					// Only difference is that calls RefreshData(true, true)

                    var form = new Client<AssignmentForm>()
                        .Query(
                            new Filter<AssignmentForm>(x => x.ID).IsEqualTo(instance.ID),
                            new Columns<AssignmentForm>(ColumnTypeFlags.None).Add(x=>x.ID).Add(x=>x.Form.ID)
                        )
                        .Rows
                        .Select(x => x.ToObject<AssignmentForm>())
                        .FirstOrDefault();
                    
                    var model = new DigitalFormHostModel<Assignment, AssignmentLink, AssignmentForm>();
                    model.LoadItems(ViewModel.Item.Entity, form.Form.ID, form.ID, null);
                    var host = new DigitalFormHost(model);

                    host.OnClosing += (o, args) =>
                    {
                        if (args.Changed)
                        {
                            //instance.Completed = !model.DigitalFormDataModel.Instance.FormCompleted.IsEmpty();
                        }
                    };
                    Navigation.PushAsync(host);
                }
            }
        }
        
    }
}