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use std::mem;
use ruma::{api::client::threads::get_threads::v1::IncludeThreads, OwnedUserId, RoomId, UserId};
use crate::{database::KeyValueDatabase, service, services, utils, Error, PduEvent, Result};
impl service::rooms::threads::Data for KeyValueDatabase {
fn threads_until<'a>(
&'a self,
user_id: &'a UserId,
room_id: &'a RoomId,
until: u64,
include: &'a IncludeThreads,
) -> Result<Box<dyn Iterator<Item = Result<(u64, PduEvent)>> + 'a>> {
let prefix = services()
.rooms
.short
.get_shortroomid(room_id)?
.expect("room exists")
.to_be_bytes()
.to_vec();
let mut current = prefix.clone();
current.extend_from_slice(&(until - 1).to_be_bytes());
Ok(Box::new(
self.threadid_userids
.iter_from(¤t, true)
.take_while(move |(k, _)| k.starts_with(&prefix))
.map(move |(pduid, users)| {
let count = utils::u64_from_bytes(&pduid[(mem::size_of::<u64>())..])
.map_err(|_| Error::bad_database("Invalid pduid in threadid_userids."))?;
let mut pdu = services()
.rooms
.timeline
.get_pdu_from_id(&pduid)?
.ok_or_else(|| {
Error::bad_database("Invalid pduid reference in threadid_userids")
})?;
if pdu.sender != user_id {
pdu.remove_transaction_id()?;
}
Ok((count, pdu))
}),
))
}
fn update_participants(&self, root_id: &[u8], participants: &[OwnedUserId]) -> Result<()> {
let users = participants
.iter()
.map(|user| user.as_bytes())
.collect::<Vec<_>>()
.join(&[0xff][..]);
self.threadid_userids.insert(&root_id, &users)?;
Ok(())
}
fn get_participants(&self, root_id: &[u8]) -> Result<Option<Vec<OwnedUserId>>> {
if let Some(users) = self.threadid_userids.get(&root_id)? {
Ok(Some(
users
.split(|b| *b == 0xff)
.map(|bytes| {
UserId::parse(utils::string_from_bytes(bytes).map_err(|_| {
Error::bad_database("Invalid UserId bytes in threadid_userids.")
})?)
.map_err(|_| Error::bad_database("Invalid UserId in threadid_userids."))
})
.filter_map(|r| r.ok())
.collect(),
))
} else {
Ok(None)
}
}
}
|
