/// <summary>
/// Get the event notifications in pagination format .
/// then ,it will set the returned data (event notification) as read .
/// </summary>
/// <param name="repId"></param>
/// <param name="pageNumber">for pagination</param>
/// <param name="pageSize">for pagination</param>
/// <returns></returns>
public async Task <Response <IEnumerable <EventNotification> > > GetEventNotification(int repId, int pageNumber, int pageSize)
{
try
{
var dictionary = _repo.GetEventsNotifications(repId, pageNumber, pageSize)
.ToDictionary(notification => new EventNotificationPrimaryKey(notification.DataId, notification.NotificationTypeId));
//Reading Logic
var r = new ReadingHandler <EventNotificationPrimaryKey>();
var obj = new List <IReadable <EventNotificationPrimaryKey> >(dictionary.Select(notification => new EventRead(notification.Value)));
r.SetObj(obj);
var readElements = r.ReadAll();//the Ids that were influenced in reading process.
//end of reading logic
await _unitWork.CommitAsync();
/**
* after commiting ,the data is set as read ,but the client
* need to know the whether the received data is read or not.
* so we reset th data to the state it was in before commiting .
*/
foreach (var element in readElements)
{
dictionary[new EventNotificationPrimaryKey(element.DataId, element.TypeId)].Read = false;
}
return(new Response <IEnumerable <EventNotification> >(dictionary.Values));
}
catch (Exception e)
{
return(new Response <IEnumerable <EventNotification> >($"ERROR :{e.Message}"));
}
}
