public static void SetUserInGroup(this ICache cache, MessangerUser user, MessangerGroup room, bool value)
{
string key = CacheKeys.GetUserInGroup(user, room);
// Cache this forever since people don't leave rooms often
cache.Set(key, value, TimeSpan.FromDays(365));
}
public static bool IsUserInGroup(this IMessangerRepository repository, ICache cache, MessangerUser user, MessangerGroup group)
{
bool? cached = cache.IsUserInGroup(user, group);
if (cached == null)
{
//TODO: resolve issue here
cached = repository.IsUserInGroup(user, group);
cache.SetUserInGroup(user, group, cached.Value);
}
return cached.Value;
}
public NewGroupMessage(MessangerGroup group)
{
NewGroup = group;
}
private void UpdateActivity(MessangerUser user, MessangerGroup group)
{
UpdateActivity(user);
OnUpdateActivity(user, group);
}
private void OnUpdateActivity(MessangerUser user, MessangerGroup group)
{
var userViewModel = new UserViewModel(user);
Clients.Group(group.Name).updateActivity(userViewModel, group.Name);
}
void INotificationService.OnUserJoinedGroup(MessangerUser user, MessangerGroup group)
{
if (user == null)
throw new ArgumentNullException("user");
if (group == null)
throw new ArgumentNullException("group");
Clients.Group(group.Name).userJoinedGroup(user);
}
public static string GetUserInGroup(MessangerUser user, MessangerGroup room)
{
return "UserInRoom" + user.Key + "_" + room.Key;
}
public static void RemoveUserInGroup(this ICache cache, MessangerUser user, MessangerGroup room)
{
cache.Remove(CacheKeys.GetUserInGroup(user, room));
}
public static bool? IsUserInGroup(this ICache cache, MessangerUser user, MessangerGroup room)
{
string key = CacheKeys.GetUserInGroup(user, room);
return (bool?)cache.Get(key);
}
private HttpResponseMessage CreateResponseMessage(MessangerGroup group)
{
HttpResponseMessage message = new HttpResponseMessage(HttpStatusCode.Created);
message.Content = new StringContent(group.Key.ToString());
message.Headers.Location = new Uri(Url.Link("DefaultApiActionParam", new { action = "get", groupName = group.Name }));
return message;
}
private bool IsUserAllowed(MessangerGroup group, MessangerUser user)
{
return group.AllowedUsers.Contains(user) || user.IsAdmin;
}
private void GenericOpenOrCloseGroup(MessangerUser user, MessangerGroup targetGroup, bool close)
{
EnsureOwnerOrAdmin(user, targetGroup);
if (!close && !targetGroup.Closed)
throw new InvalidOperationException(string.Format("{0} is already open.", targetGroup.Name));
else if (close && targetGroup.Closed)
throw new InvalidOperationException(String.Format("{0} is already closed.", targetGroup.Name));
targetGroup.Closed = close;
_repository.CommitChanges();
}
private static void EnsureOwnerOrAdmin(MessangerUser user, MessangerGroup room)
{
if (!room.Owners.Contains(user) && !user.IsAdmin)
{
throw new InvalidOperationException("You are not an owner of room '" + room.Name + "'");
}
}
private static void EnsureCreatorOrAdmin(MessangerUser user, MessangerGroup group)
{
if (user != group.Creator && !user.IsAdmin)
{
throw new InvalidOperationException("You are not the creator of room '" + group.Name + "'");
}
}
public Common.Models.MessangerGroup AddGroup(Common.Models.MessangerUser user, string groupName)
{
if (groupName.Equals("Lobby", StringComparison.OrdinalIgnoreCase))
{
throw new InvalidOperationException("Lobby is not a valid chat room.");
}
if (!IsValidGroupName(groupName))
{
throw new InvalidOperationException(String.Format("'{0}' is not a valid group name.", groupName));
}
var room = new MessangerGroup
{
Name = groupName,
Creator = user
};
room.Owners.Add(user);
_repository.Add(room);
user.OwnedGroups.Add(room);
return room;
}
public ChangeGroupMessage(MessangerGroup changed)
{
DefaultGroup = changed;
}