Also resultified `get_watched_folders`.
Python test `test_moved_markseen` is modified to test using incoming
message instead of BCC-self message, because BCC-self message is
detected immediately in the Inbox.
* add missing stock strings for connectivity and quota
* reword quota error
* use 'Incoming/Outgoing Messages' instead of 'Inbox/Outbox'
* just say 'Not supported by your provider.' if quota cannot be read.
- the context is already given by the headline
'Storage on domain.org'
- the string is short and does not disturb much
(it is a very common error)
- the string does not mention 'quota' as such,
which will be hard to translate ('Kontingentsinformationen') -
even if ppl as we know about the Quota extensions an such things.
there was also the idea to hide the whole section,
however, that is confusing in a multi-device-usage
when things are sometimes shown and sometimes not.
* add imap::get_quota_roots()
* schedule quote-checking job on getting connectivity-html
* get quota and debug print it
* basic quota output
* update quota at most once per minute, emit event on changes
* use more meaningful names
* add some comments, move update_recent_quota() to quota.rs
* show root name only if there are several roots
* make clippy happy, some refactorings
* allow only one update-quota job per time
* add now supported QUOTA to standards.md
* In dc_maybe_network_lost() directly set the connectivity "Not connected"
r10s reported that without doing this, the connectivity would stay at
"Connected" for 16 more seconds after network is gone and
dc_maybe_network_lost() was called.
* Set the state for all connections
* escape strings added to html
* use more common emojis for connectivity report
all emojis are from 2010 and older now.
an alternative would have been to use css,
however, that may have other issues
and as the whole report is subject to change anyway,
i go for the easy solution.
* use 'modern' meta pattern, remove unused div and styles
* use css instead emojis; looks better that way
also, we have the same look on all systems.
* add connectivity command to repl tool
See https://support.delta.chat/t/discussion-how-to-show-error-states/1363/10 <!-- comment -->
It turns out that it's pretty easy to distinguish between lots of states (currently Error/NotConnected, Connecting…, Getting new messages… and Connected). What's not that easy is distinguishing between an actual error and no network, because if the server just doesn't respond, it could mean that we don't have network or that we are trying ipv6, but only ipv4 works.
**WRT debouncing:**
Sending of EVENT_CONNECTIVITY_CHANGED is not debounced, but emitted every time one of the 3 threads (Inbox, Mvbox and Sentbox) has a network error, starts fetching data, or is done fetching data.
This means that it is emitted:
- 9 times when dc_maybe_network() is called or we get network connection
- 12 times when we lose network connection
Some measurements: dc_get_connectivity() takes a little more than 1ms (in my measurements back in March), dc_get_connectivity_html() takes 10-20ms. This means that it's no immmediate problem to call them very often, might increase battery drain though. For the UI it may be a lot of work to update the title everytime; at least Android is smart enough to update the title only once.
Possible problems (we don't have to worry about them now I think):
- Due to the scan_folders feature, if the user has lots of folders, the state could be "Connecting..." for quite a long time, generally DC seemed a little unresponsive to me because it took so long for "Connecting..." to go away. Telegram has a state "Updating..." that sometimes comes after "Connecting...".
To be done in other PRs:
- Better handle the case that the password was changed on the server and authenticating fails, see https://github.com/deltachat/deltachat-core-rust/issues/1923 and https://github.com/deltachat/deltachat-core-rust/issues/1768
- maybe event debouncing (except for "Connected" connectivity events)
fix https://github.com/deltachat/deltachat-android/issues/1760
