prs/prs.mobile.new/PRS.Mobile/Modules/Human Resources/Qualifications/Edit/EmployeeQualificationEditViewModel.cs

using System;
using System.Threading.Tasks;
using Comal.Classes;
using InABox.Core;
using InABox.Mobile;

namespace PRS.Mobile
{
    public class EmployeeQualificationEditViewModel : MobileViewModel<EmployeeQualification, EmployeeQualificationShell>
    {
        protected override void DoLoad()
        {
            Task[] tasks = {
                Task.Run(() => Qualifications.Refresh(true)),
                Task.Run(() => Documents.Refresh(true)),
                Task.Run(() => Photos.Refresh(true))
            };
            Task.WaitAll(tasks);
        }
        
        public QualificationModel Qualifications { get; private set; }
        
        public EmployeeQualificationDocumentModel Documents { get; private set; }
        
        public DocumentModel Photos { get; private set; }

        public EmployeeQualificationEditViewModel()
        {
            Qualifications = new QualificationModel(App.Data,
                () => null
            );

            Documents = new EmployeeQualificationDocumentModel(App.Data,
                () => new Filter<EmployeeQualificationDocument>(x => x.EntityLink.ID).IsEqualTo(Item.ID == Guid.Empty ? CoreUtils.FullGuid : Item.ID)
            );
            
            Photos = new DocumentModel(App.Data,
                () => new Filter<Document>(x => x.ID).IsEqualTo(Item.FrontPhotoID == Guid.Empty ? CoreUtils.FullGuid : Item.FrontPhotoID)
                    .Or(x=>x.ID).IsEqualTo(Item.BackPhotoID == Guid.Empty ? CoreUtils.FullGuid : Item.BackPhotoID)
            );
        }
        
        public override bool IsChanged => Item == null || Item.ID == Guid.Empty || Item.IsChanged();

    }
}