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feat: new group consistency algorithm

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This implements new group consistency algorithm described in
<https://github.com/deltachat/deltachat-core-rust/issues/6401>

New `Chat-Group-Member-Timestamps` header is added
to send timestamps of member additions and removals.
Member is part of the chat if its addition timestamp
is greater or equal to the removal timestamp.
This commit is contained in:
link2xt
2025-01-04 06:19:28 +00:00
parent cb43382896
commit de63527d94
17 changed files with 750 additions and 486 deletions
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22
src/peerstate.rs
View File

@@ -711,9 +711,25 @@ impl Peerstate {
Origin::IncomingUnknownFrom,
)
.await?;
chat::remove_from_chat_contacts_table(context, *chat_id, contact_id)
.await?;
chat::add_to_chat_contacts_table(context, *chat_id, &[new_contact_id])
context
.sql
.transaction(|transaction| {
transaction.execute(
"UPDATE chats_contacts
SET remove_timestamp=MAX(add_timestamp+1, ?)
WHERE chat_id=? AND contact_id=?",
(timestamp, chat_id, contact_id),
)?;
transaction.execute(
"INSERT INTO chats_contacts
(chat_id, contact_id, add_timestamp)
VALUES (?1, ?2, ?3)
ON CONFLICT (chat_id, contact_id)
DO UPDATE SET add_timestamp=MAX(remove_timestamp, ?3)",
(chat_id, new_contact_id, timestamp),
)?;
Ok(())
})
.await?;
context.emit_event(EventType::ChatModified(*chat_id));