prs/prs.mobile.new/PRS.Mobile/Modules/Equipment/Edit/EquipmentEditViewModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Comal.Classes;
using InABox.Core;
using InABox.Mobile;
using Xamarin.Forms;

namespace PRS.Mobile
{
    public class EquipmentEditViewModel : MobileViewModel<Equipment, EquipmentShell>
    {
        public EquipmentDocumentModel Documents { get; private set; }
        
        public DocumentModel SpecificationSheet { get; private set; }
        
        public EquipmentKanbanModel Kanbans { get; private set; }

        public CoreObservableCollection<EquipmentKanbanShell> OpenKanbans { get; private set; }

        public Point Coordinates =>
            Item == null
                ? new Point()
                : new Point
                (
                    Item.Latitude,
                    Item.Longitude
                );
        
        public override bool IsChanged => Item == null || Item.ID == Guid.Empty || Item.IsChanged();
        
        public EquipmentEditViewModel()
        {
            Documents = new EquipmentDocumentModel(App.Data,
                () => new Filter<EquipmentDocument>(x => x.EntityLink.ID).IsEqualTo(Item?.ID ?? CoreUtils.FullGuid));
            SpecificationSheet = new DocumentModel(App.Data,
                () => new Filter<Document>(x => x.ID).IsEqualTo(Item?.SpecificationSheetID ?? CoreUtils.FullGuid));
            Kanbans = new EquipmentKanbanModel(App.Data,
                () => new Filter<Kanban>(x => x.Equipment.ID).IsEqualTo(Item?.ID ?? CoreUtils.FullGuid));
            Kanbans.Changed += (sender, args) => 
                OpenKanbans.ReplaceRange(Kanbans.Where(x => x.Completed.IsEmpty()).ToArray());
            OpenKanbans = new CoreObservableCollection<EquipmentKanbanShell>();
        }

        protected override void DoLoad()
        {
            var tasks = new Task[]
            {
                Task.Run(() => Documents.Refresh(true)),
                Task.Run(() => SpecificationSheet.Refresh(true)),
                Task.Run(() => Kanbans.Refresh(true)),
            };
            Task.WaitAll(tasks);
            
        }
    }
}