This should improve activity parsing across all devices, as we now take
the header into account, which indicates what groups are actually
present.
Thanks to @opcode for figuring out the header structure and providing
the ImHex patterns for the activity data.
Activity data fetching on Huami devices was filled with duplicated code,
and the handleActivityFetchFinish was called from multiple places where
it did not make sense. This made us signal to the band that activity
fetch was finished when it sometimes was not, causing some race
condititions that would make activity fetch fail or get stuck.
This refactor defines a clear "processBufferedData" that is called
upstream, signaling to the fetch operation that we have received all
data and the buffer can be processed. All handling of metadata and ack
messages is also delegated to the upstream class.
Wake lock with around 10 second timeout is a quick and dirty solution,
however as the time sync should happen once per several days the 10
second wake time should not be an issue.
Ensure TimeChangeReceiver alarm is scheduled when enabling
datetime_synconconnect and registering TimeChangeReceiver broadcast
receiver.
It is important to re-schedule the alarm after registering broadcast
receiver, because:
1. if broadcast receiver was unregistered while previous alarm arrived,
there is no alarm scheduled;
2. re-scheduling the alarm resets the periodic time sync timer when
first device is connected (which is desired).
It is important to re-schedule the alarm when datetime_synconconnect
gets enabled, because there might be no alarm scheduled.
Call onSetTime() when enabling datetime_synconconnect.
Sync time every 43 hours, 53 minutes and 23 seconds.
Interval is a bit smaller than 2 days.
Interval is a prime (in seconds) so time of sync will slide over time.
If next DST change is less than 48 hours in future, wait for it.
