This commit removes rust-nostr dependency, and replaces the NIP-44 logic
with a new NIP-44 module based on the Swift NostrSDK implementation.
The decision to move away from rust-nostr and the Swift NostrSDK was
made for the following reasons:
1. `rust-nostr` caused the app size to double
2. We only need NIP44 functionality, and we don't need to bring
everything else
3. The Swift NostrSDK caused conflicts around the secp256k1 dependency
that is hard to address
4. The way we do things in the codebase is far different from the Swift
NostrSDK, and we optimize it for use with NostrDB. Bringing it an
outside library causes significant complexity in integration with
NostrDB, and would effectively cause the codebase to be split into
two different ways of achieving the same results. Therefore it is
cleaner if we stick to our own Nostr structures and functions and
focus on maintaining them.
However, the library CryptoSwift was added as a dependency, to bring in
ChaCha20 which is not supported by CryptoKit (CryptoKit supports the
ChaCha20-Poly1305 cipher, but NIP-44 uses ChaCha20 with HMAC-SHA256
instead)
Closes: https://github.com/damus-io/damus/issues/2849
Changelog-Changed: Made internal changes to reduce the app binary size
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
This commit makes drafts persistent.
It does so by:
1. Converting `DraftsArtifacts` into Nostr events
2. Wrapping those Nostr events into NIP-37 notes
3. Saving those NIP-37 notes into NostrDB
4. Loading those same notes at startup
5. Unwrapping NIP-37 notes into Nostr events
6. Parsing that into `DraftsArtifacts`, loaded into DamusState
7. PostView can then load these drafts
Furthermore, a UX indicator was added to show when a draft has been
saved.
Limitations:
1. No encoding/decoding roundtrip guarantees. That would require
extensive and heavy refactoring which is out of the scope of this
commit.
2. We rely on `UserSettings` to keep track of note ids, while we do not
have Ndb query capabilities
3. No NIP-37 relay sync support has been added yet, as that adds
important privacy and sync conflict considerations which are out of
the scope of this ticket, which is ensuring people don't lose their
progress while writing notes.
4. The main use cases and scenarios have been tested. Because of (1),
there may be some small inconsistencies on the stored version of the
draft, but care was taken to keep the substantial portions of the
content intact.
Closes: https://github.com/damus-io/damus/issues/1862
Changelog-Added: Added local persistence of note drafts
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
