async Task <IEnumerable <EntityLabel> > GetEntityLabelsByEntityIdAsync(int entityId)
{
if (entityId == 0)
{
// return empty collection for new topics
return(new List <EntityLabel>());
}
return(await _entityLabelStore.GetByEntityIdAsync(entityId) ?? new List <EntityLabel>());
}
async Task <IList <int> > SendNotificationsAsync(TEntity entity, IList <int> usersToExclude)
{
if (entity == null)
{
throw new ArgumentNullException(nameof(entity));
}
// Compile a list of notified users
var notifiedUsers = new List <int>();
// Follow type name
var name = FollowTypes.Label.Name;
// Get follow state for entity
var state = entity.GetOrCreate <FollowState>();
// Have notifications already been sent for the entity?
var follow = state.FollowsSent.FirstOrDefault(f =>
f.Equals(name, StringComparison.InvariantCultureIgnoreCase));
if (follow != null)
{
return(notifiedUsers);
}
// Compile all entity label ids for the entity
var labels = new List <int>();
var entityLabels = await _entityLabelStore.GetByEntityIdAsync(entity.Id);
if (entityLabels != null)
{
foreach (var entityLabel in entityLabels)
{
if (!labels.Contains(entityLabel.LabelId))
{
labels.Add(entityLabel.LabelId);
}
}
}
// Get all follows for entity labels
var follows = await _followStore.QueryAsync()
.Select <FollowQueryParams>(q =>
{
q.Name.Equals(name);
q.ThingId.IsIn(labels.ToArray());
if (usersToExclude.Count > 0)
{
q.CreatedUserId.IsNotIn(usersToExclude.ToArray());
}
})
.ToList();
// Reduce the users for all found follows
var users = await ReduceUsersAsync(follows?.Data, entity);
// No users simply return
if (users == null)
{
return(notifiedUsers);
}
// Send notifications
foreach (var user in users)
{
// Email notifications
if (user.NotificationEnabled(_userNotificationTypeDefaults, EmailNotifications.NewLabel))
{
// Track notified
if (!notifiedUsers.Contains(user.Id))
{
notifiedUsers.Add(user.Id);
}
// Notify
await _notificationManager.SendAsync(new Notification(EmailNotifications.NewLabel)
{
To = user,
}, entity);
}
// Web notifications
if (user.NotificationEnabled(_userNotificationTypeDefaults, WebNotifications.NewLabel))
{
// Track notified
if (!notifiedUsers.Contains(user.Id))
{
notifiedUsers.Add(user.Id);
}
// Notify
await _notificationManager.SendAsync(new Notification(WebNotifications.NewLabel)
{
To = user,
From = new User
{
Id = entity.CreatedBy.Id,
UserName = entity.CreatedBy.UserName,
DisplayName = entity.CreatedBy.DisplayName,
Alias = entity.CreatedBy.Alias,
PhotoUrl = entity.CreatedBy.PhotoUrl,
PhotoColor = entity.CreatedBy.PhotoColor
}
}, entity);
}
}
// Update state
state.AddSent(name);
entity.AddOrUpdate(state);
// Persist state
await _entityStore.UpdateAsync(entity);
// Return a list of all notified users
return(notifiedUsers);
}