public List <OutgoingMessageViewModel> ScrollMoveMessages(Guid messageID, bool Up)
{
int totalCount = 0;
ChatMessageRepository cRepo = new ChatMessageRepository();
var message = cRepo.Get(messageID);
var messages = cRepo.GetAll(null, 0, 30, out totalCount, null, (ChatMessageSurrogate u) => Up ? u.ReceivedDate <message.ReceivedDate : u.ReceivedDate> message.ReceivedDate);
return(messages.Select(u => (OutgoingMessageViewModel)u).ToList());//.Cast<OutgoingMessageViewModel>().ToList();
}
public static List <OutgoingMessageViewModel> GetInitMessage(Guid lastMessageID)
{
List <OutgoingMessageViewModel> result = new List <OutgoingMessageViewModel>();
var cRepo = new ChatMessageRepository();
var lastMessage = cRepo.Get(lastMessageID);
if (lastMessage != null)
{
int totalCount = 0;
var beforeMessages = cRepo.GetAll(null, 30, 0, out totalCount, "date", (ChatMessageSurrogate u) => u.ReceivedDate < lastMessage.ReceivedDate);
var afterMessages = cRepo.GetAll(null, 30, 0, out totalCount, "date", (ChatMessageSurrogate u) => u.ReceivedDate > lastMessage.ReceivedDate);
result.AddRange(beforeMessages.Select(u => (OutgoingMessageViewModel)u).ToList()); //beforeMessages.Cast<OutgoingMessageViewModel>());
OutgoingMessageViewModel lastOutgoinMessage = lastMessage;
lastOutgoinMessage.LastReadedMessage = true;
result.Add(lastOutgoinMessage);
result.AddRange(afterMessages.Select(u => (OutgoingMessageViewModel)u).ToList());
}
return(result);
}
internal static Guid?GetLastMessage()
{
ChatMessageRepository cRepo = new ChatMessageRepository();
int totalCount = 0;
var lastMessmage = cRepo.GetAll(null, 1, 0, out totalCount, "date desc").FirstOrDefault();
if (lastMessmage != null)
{
return(lastMessmage.ID);
}
else
{
return(null);
}
}