Method get_existing_msg_ids

deltachat-jsonrpc/src/api.rs:1422–1435

Checks if the messages with given IDs exist. Returns IDs of existing messages.

(&self, account_id: u32, msg_ids: Vec<u32>)

    ///
    /// Returns IDs of existing messages.
    async fn get_existing_msg_ids(&self, account_id: u32, msg_ids: Vec<u32>) -> Result<Vec<u32>> {
        if let Some(context) = self.get_context_opt(account_id).await {
            let msg_ids: Vec<MsgId> = msg_ids.into_iter().map(MsgId::new).collect();
            let existing_msg_ids = get_existing_msg_ids(&context, &msg_ids).await?;
            Ok(existing_msg_ids
                .into_iter()
                .map(|msg_id| msg_id.to_u32())
                .collect())
        } else {
            // Account does not exist, so messages do not exist either,
            // but this is not an error.
            Ok(Vec::new())
        }
    }

    /// Get all messages belonging to a chat.
    ///