internal void ProcessConversationItem(IConversationItem item)
{
using (var db = new LiteDatabase(DbPath))
{
Conversation conv = Conversations.Where(x => x.Id == item.ConversationId).First();
// Update the db
if (item.IsMessage)
{
Message msg = item as Message;
var messages = db.GetCollection <Message>("messages");
if (messages.Exists(Query.EQ("_id", msg.Id)))
{
return;
}
messages.Insert(item as Message);
}
else
{
ConversationEvent evt = item as ConversationEvent;
var events = db.GetCollection <ConversationEvent>("events");
if (events.Exists(Query.EQ("_id", evt.Id)))
{
return;
}
events.Insert(evt);
var conversations = db.GetCollection <Conversation>("conversations");
conversations.EnsureIndex(x => x.Id);
Conversation dbconv = conversations.FindOne(Query.EQ("_id", evt.ConversationId));
/* In case of an event, some property of the conversation must be updated
* (both in-memory and in the db) */
switch (evt.Type)
{
case EventType.NameChanged:
RunOnUI(new ThreadStart(() => { conv.Name = evt.Args["Name"] as string; }));
dbconv.Name = evt.Args["Name"] as string;
break;
case EventType.UserAdded:
var users = db.GetCollection <User>("users");
User user = evt.Args["User"] as User;
if (conv.Participants.Where(x => x.Id == user.Id).Count() > 0)
{
return;
}
RunOnUI(new ThreadStart(() => { conv.Participants.Add(user); }));
dbconv.Participants.Add(user);
break;
case EventType.UserLeft:
if (conv.Participants.Where(x => x.Id == evt.Sender.Id).Count() > 0)
{
RunOnUI(new ThreadStart(() => { conv.Participants.Remove(conv.Participants.Where(x => x.Id == evt.Sender.Id).First()); }));
}
if (dbconv.Participants.Where(x => x.Id == evt.Sender.Id).Count() > 0)
{
dbconv.Participants.Remove(dbconv.Participants.Where(x => x.Id == evt.Sender.Id).First());
}
break;
}
conversations.Update(dbconv); // Save the changes
}
// Update the in-memory model
RunOnUI(new ThreadStart(() => {
conv.AddItem(item);
ConversationItemEvent?.Invoke(this, new ConversationItemArgs(item));
}));
}
}
public ConversationItemArgs(IConversationItem item)
{
Item = item;
}
