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using System;
using System.Data.Entity;
using System.Linq;
using Tango.BL;
using Tango.BL.Entities;
using Tango.Core.DI;
using Tango.Integration.Operation;
using Tango.PMR.Diagnostics;
using Tango.PPC.Common;
using Tango.PPC.Common.Application;
using Tango.PPC.Common.Connection;
using Tango.PPC.Common.Notifications;
using Tango.Settings;
using Tango.SharedUI;

namespace Tango.PPC.UI.Dialogs
{
    public class GeneralInformationViewVM : DialogViewVM
    {
        [TangoInject]
        public IMachineProvider MachineProvider { get; set; }
        
        [TangoInject]
        public IPPCApplicationManager ApplicationManager { get; set; }

        private PPCSettings _settings;
        /// <summary>
        /// Gets the main PPC settings.
        /// </summary>
        public PPCSettings Settings
        {
            get
            {
                if (_settings == null)
                {
                    _settings = SettingsManager.Default.GetOrCreate<PPCSettings>();
                }

                return _settings;
            }
            private set { _settings = value; }
        }

        public Site CurrentSite { get; set; }

        public String SiteName
        {
            get { return CurrentSite == null ? "" : CurrentSite.Name; }
        }

        public GeneralInformationViewVM( IMachineProvider provider, IPPCApplicationManager appManager)
        {
            MachineProvider = provider;
            ApplicationManager = appManager;
            InitSite();
        }

        public async void InitSite()
        {
            if (CurrentSite == null)
            {
                var machine = MachineProvider.Machine;
                if (machine != null && !String.IsNullOrEmpty(machine.SiteGuid))
                {
                    using (ObservablesContext db = ObservablesContext.CreateDefault())
                    {
                        var site = (await db.Sites.Where(x => x.Guid == machine.SiteGuid).ToListAsync()).FirstOrDefault();
                        CurrentSite = site;
                        RaisePropertyChanged(nameof(SiteName));
                    }
                }
            }
        }
    } 
}