Method get_sync_id

src/chat.rs:2072–2122

Returns chat id for the purpose of synchronisation across devices.

(&self, context: &Context)

    /// Returns chat id for the purpose of synchronisation across devices.
    async fn get_sync_id(&self, context: &Context) -> Result<Option<SyncId>> {
        match self.typ {
            Chattype::Single => {
                if self.is_device_talk() {
                    return Ok(Some(SyncId::Device));
                }

                let mut r = None;
                for contact_id in get_chat_contacts(context, self.id).await? {
                    if contact_id == ContactId::SELF && !self.is_self_talk() {
                        continue;
                    }
                    if r.is_some() {
                        return Ok(None);
                    }
                    let contact = Contact::get_by_id(context, contact_id).await?;
                    if let Some(fingerprint) = contact.fingerprint() {
                        r = Some(SyncId::ContactFingerprint(fingerprint.hex()));
                    } else {
                        r = Some(SyncId::ContactAddr(contact.get_addr().to_string()));
                    }
                }
                Ok(r)
            }
            Chattype::OutBroadcast
            | Chattype::InBroadcast
            | Chattype::Group
            | Chattype::Mailinglist => {
                if !self.grpid.is_empty() {
                    return Ok(Some(SyncId::Grpid(self.grpid.clone())));
                }

                let Some((parent_rfc724_mid, parent_in_reply_to, _)) = self
                    .id
                    .get_parent_mime_headers(context, MessageState::OutDelivered)
                    .await?
                else {
                    warn!(
                        context,
                        "Chat::get_sync_id({}): No good message identifying the chat found.",
                        self.id
                    );
                    return Ok(None);
                };
                Ok(Some(SyncId::Msgids(vec![
                    parent_in_reply_to,
                    parent_rfc724_mid,
                ])))
            }
        }
    }

    /// Synchronises a chat action to other devices.
    pub(crate) async fn sync(&self, context: &Context, action: SyncAction) -> Result<()> {