Messages always have an isGroupStoryReply of true or false (1 or 0),
but non-messages don't have this field, and GRDB treats that as NULL
rather than falling back to the table default.
...so it can use an existing one when there is one, which in practice
there always is because we never refresh one-time pre-keys without
rotating our signed pre-key too.
This is the first meaty part of optimizing
fetching display names.
Some contacts fall back to phone numbers as their
display names. This PR fetches them in a single
SQL query via
`OWSContactsManager.phoneNumbers(for:, transaction)`.
To achieve this, this PR introduces
`GRDBSignalAccountFinder.signalAccounts(for:,transaction:)`
to fetch many accounts at once.
In order to fetch many accounts at once, we need
to be able to fetch many values from a
ModelReadCache at once. So this PR introduces
`ModelReadCache.readValues(for:,transaction:)` and
`ModelReadCache.getValues(for:,transaction:,returnNilOnCacheMiss:)`.
Existing methods that operate on a single value
were refactored to use the batch methods.
This PR adds tests for this functionality, which
necessitated changing the visibility of various
private symbols and also improving the fake
profile manager to make it more configurable.
There's also a tiny optimization for Refinery to
avoid calling a closure that has no work to do.
This helps elide do-nothing SQL queries that would
otherwise have been introduced.
'sessionStore', 'preKeyStore', and 'signedPreKeyStore' are no longer
directly accessible; you have to go through
'signalProtocolStore(for:)' instead. This commit mechanically changes
all use sites to use `signalProtocolStore(for: .aci)`, with the
understanding that they will need cleanup in the future.
This is not enough to actually support multiple stores; they still
store in the database under the same keys. That's coming in the next
commit.
We still need the AxolotlKit model classes to migrate old sessions,
but we don't need any of the actual protocol support. This also
means we can drop HKDFKit.
Additionally, we do still use some utilities from AxolotlKit:
- AxolotlExceptions.h: NSException names, should eventually be
replaced by NSErrors everywhere
- NSData+keyVersionByte.h: prepend/remove public key type byte,
should eventually be replaced by strong types (ECPublicKey)
- SPKProtocolContext.h: defines the SPKProtocol{Read,Write}Context
marker protocols, should be replaced by direct use of
SDSAny{Read,Write}Transaction
OWSAccountIdFinder is no longer used for dependency injection in
SignalMetadataKit, so there's no need to allocate empty NSObjects just
to call the methods.
No functionality change.
