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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL;
using Tango.BL.Entities;
using Tango.BL.Enumerations;
using Tango.PPC.Common;
using Tango.PPC.Common.Notifications;
using Tango.PPC.Common.Notifications.NotificationItems;
using Tango.PPC.Events.Enumerations;
using System.Data.Entity;
namespace Tango.PPC.Events.ViewModels
{
/// <summary>
/// Represents the main view VM and entry point for <see cref="Events.EventsModule"/>.
/// </summary>
/// <seealso cref="Tango.PPC.Common.PPCViewModel" />
public class MainViewVM : PPCViewModel
{
private Dictionary<EventTypes, NotificationItem> _notifications;
private EventsSource _selectedEventsSource;
public EventsSource SelectedEventsSource
{
get { return _selectedEventsSource; }
set { _selectedEventsSource = value; RaisePropertyChangedAuto(); }
}
private ObservableCollection<MachinesEvent> _currentEvents;
/// <summary>
/// Gets or sets the current events.
/// </summary>
public ObservableCollection<MachinesEvent> CurrentEvents
{
get { return _currentEvents; }
set { _currentEvents = value; RaisePropertyChangedAuto(); }
}
private MachinesEvent _selectedEvent;
/// <summary>
/// Gets or sets the selected event.
/// </summary>
public MachinesEvent SelectedEvent
{
get { return _selectedEvent; }
set { _selectedEvent = value; RaisePropertyChangedAuto(); }
}
private ObservableCollection<MachinesEvent> _historyEvents;
/// <summary>
/// Gets or sets the history events.
/// </summary>
public ObservableCollection<MachinesEvent> HistoryEvents
{
get { return _historyEvents; }
set { _historyEvents = value; RaisePropertyChangedAuto(); }
}
private MachinesEvent _selectedHistoryEvent;
/// <summary>
/// Gets or sets the selected event.
/// </summary>
public MachinesEvent SelectedHistoryEvent
{
get { return _selectedHistoryEvent; }
set { _selectedHistoryEvent = value; RaisePropertyChangedAuto(); }
}
/// <summary>
/// Initializes a new instance of the <see cref="MainViewVM"/> class.
/// </summary>
public MainViewVM()
{
CurrentEvents = new ObservableCollection<MachinesEvent>();
_notifications = new Dictionary<EventTypes, NotificationItem>();
}
/// <summary>
/// Called when the application has been started
/// </summary>
public override void OnApplicationStarted()
{
EventLogger.EventReceived += EventLogger_EventReceived;
EventLogger.EventResolved += EventLogger_EventResolved;
}
public override async void OnApplicationReady()
{
base.OnApplicationReady();
using (var db = ObservablesContext.CreateDefault())
{
var last_week = DateTime.UtcNow.AddDays(-7);
HistoryEvents = (await db.MachinesEvents.Where(x => x.MachineGuid == MachineProvider.Machine.Guid && x.DateTime > last_week).Include(x => x.EventType).Where(x => (EventTypeNotificationTimes)x.EventType.EventNotificationTime != EventTypeNotificationTimes.None).ToListAsync()).OrderByDescending(x => x.DateTime).ToObservableCollection();
}
}
private void EventLogger_EventReceived(object sender, MachinesEvent ev)
{
InvokeUI(() =>
{
if (ev.NotificationTime != EventTypeNotificationTimes.None)
{
CurrentEvents.Insert(0, ev);
var notificationItem = new MessageNotificationItem();
notificationItem.CanClose = false;
notificationItem.Message = ev.EventType.Title;
notificationItem.ExpandedMessage = ev.Description;
notificationItem.Pressed += async (_, __) =>
{
SelectedEventsSource = EventsSource.CURRENT;
SelectedEvent = ev;
await NavigationManager.NavigateTo<EventsModule>();
};
switch (ev.Category)
{
case EventTypeCategories.Info:
notificationItem.MessageType = MessageNotificationItem.MessageNotificationItemTypes.Info;
break;
case EventTypeCategories.Warning:
notificationItem.MessageType = MessageNotificationItem.MessageNotificationItemTypes.Warning;
break;
case EventTypeCategories.Error:
notificationItem.MessageType = MessageNotificationItem.MessageNotificationItemTypes.Error;
break;
case EventTypeCategories.Critical:
notificationItem.MessageType = MessageNotificationItem.MessageNotificationItemTypes.Critical;
break;
}
NotificationProvider.PushNotification(notificationItem);
_notifications.Add(ev.EventType.Type, notificationItem);
}
});
}
private void EventLogger_EventResolved(object sender, MachinesEvent ev)
{
InvokeUI(() =>
{
if (ev.NotificationTime != EventTypeNotificationTimes.None)
{
CurrentEvents.Remove(ev);
HistoryEvents.Insert(0, ev);
if (_notifications.ContainsKey(ev.EventType.Type))
{
var notification = _notifications[ev.EventType.Type];
_notifications.Remove(ev.EventType.Type);
NotificationProvider.PopNotification(notification);
}
}
});
}
public override void OnNavigatedTo()
{
base.OnNavigatedTo();
NotificationProvider.NotificationsVisible = false;
}
public override void OnNavigatedFrom()
{
base.OnNavigatedFrom();
NotificationProvider.NotificationsVisible = true;
}
}
}
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