The code in dc_receive_imf.rs looks a bit funny, an alternative would be a function:
fn upcate_chat_last_subject(context: &Context, chat_id: &ChatId, mime_parser: &mut MimeMessage) -> Result<()> {
let mut chat = Chat::load_from_db(context, *chat_id)?;
chat.param.set(Param::LastSubject, mime_parser.get_subject().ok_or_else(||Error::Message("No subject in email".to_string()))?);
chat.update_param(context)?;
Ok(())
}
Both methods do the same: compare chat_id to 0. However, in these cases
0 refers to the state when chat_id is not determined yet, because no
corresponding chat has been found.
All functions that returned 0 to indicate error have already been
resultified.
* First try making get_recipients use MailHeader (nice and functional)
* Get it to compile by using not-so-functional style
* Add "empty-from" test, drop unnecessary check for error; continue using addrparse_header() instead of addrparse()
* Try to use functional style, unfortunately, I can't get the compiler to accept it
* Do it imperative-style: Do not overwrite To with Cc and vice versa
* Use addrparse_header() once more
* Still addrparse_header()
* Clippy
* Fix compile errors in tests
* Fix typo
* Fix tests again ;-)
* Code style
* Code style; try a HashMap<addr: String, display_name: String> as an address list but I am not convinced
* Code style; Use Vec<SingleInfo> as address list
* Clippy
* Add tests
* Add another test
* Remove stale comments
If error is ignored, the message will never be fetched again, even if
there was a database write error.
dc_receive_imf itself is modified to ignore unrecoverable errors, to
prevent endless refetching of incorrect messages.
these events take the message-id as parameter and might be used
to update an existing list (although to recommended)
if the event is issued for hidden messages,
this might led to "empty" messages flashing up -
the ui tries to get the message from the event,
after a moment, on the next update, the message disappears again
as hidden messages are of course not returned eg. by dc_get_chat_msgs().
the effect was probably always visible for secure-join-messages on ios,
however, become much more visible recently when read-receipts are added
as hidden messages as well (to make them auto-deletable).
If precheck_imf fails to check if message with the same rfc724_mid
already exists, the same message may be downloaded twice. Instead,
abort the whole operation and retry later.
MarkseenMdnOnImap stored server folder and UID which are never updated
by update_server_uid. Now hidden entries are created for MDNs, so they
should be handled as ordinary messages.
Now 0 means "never delete", 1 means "delete at once" and other values
indicate the number of seconds after which them message should be
deleted from the server.
Configuration value interpretation is moved into
Context.get_config_delete_server_after() function.
At least one entry is required for DeleteMsgOnImap job. Additionally,
adding a hidden entry makes it possible to avoid redownloading the
message if it gets a new UID on the server.
DeleteMsgOnImap deletes files from the server only when the last part
is deleted. Removing only the first part of the hidden or trashed
message does not result in message deletion.
