Another massive refactor to change the way routing works. Now any
column can route anywhere.
Also things are generally just much better and more modular via the
new struct split borrowing technique.
I didn't even try to split this into smaller commits for my sanity.
Signed-off-by: William Casarin <jb55@jb55.com>
We have a NoteRef cache for threads in memory, which is just a list of
NoteKeys and timestamps.
When reopening a thread, query the local DB to see if there are any new
notes that we might have missed because we weren't actively subscribed
to them.
Signed-off-by: William Casarin <jb55@jb55.com>
This adds local nostrdb thread subscriptions. When navigating to a
thread, we first check to see if we have any active nostrdb
subscriptions for that thread. If not, we create a new subscription. If
we do, we re-use that subscription.
This works by storing thread state in the Threads struct in the Damus
application state.
When we pop a route, we check to see if its a thread route. If it is,
then we try to unsubscribe, but only if that is the last remaining
subscriber for that thread, as there could be more than one.
Signed-off-by: William Casarin <jb55@jb55.com>
This is a really dumb and broken version of threads, but it will be our
foundation for future changes.
All it currently does is load whatever notes we have locally for a
thread in chronological order. It currently does not open any
subscriptions. It is not clear what is replying to what, but hey, its a
start.
Signed-off-by: William Casarin <jb55@jb55.com>
