Files
scrabble-game/pkg
Ilia Denisov 90eaf4964b
Tests · Go / test (push) Successful in 10s
Tests · Integration / integration (push) Successful in 12s
Tests · UI / test (push) Successful in 19s
Tests · Go / test (pull_request) Successful in 9s
Tests · Integration / integration (pull_request) Successful in 12s
Tests · UI / test (pull_request) Successful in 19s
Stage 13: alphabet on the wire (UI alphabet-agnostic, TODO-4)
Live play now exchanges per-variant alphabet indices instead of concrete
letters (rack out; submit-play, evaluate, exchange, word-check in). The client
caches each variant's (index, letter, value) table behind
StateRequest.include_alphabet and renders the rack and blank chooser from it,
dropping the hardcoded value/alphabet tables. History, the durable journal and
GCG stay decoded concrete characters (ARCHITECTURE §9.1, unchanged).

- pkg/fbs: new AlphabetEntry + PlayTile; StateView.rack -> [ubyte] + alphabet;
  StateRequest.include_alphabet; SubmitPlay/Eval tiles -> [PlayTile];
  Exchange tiles + CheckWord word -> [ubyte] (committed Go + TS regenerated).
- engine: AlphabetTable + a cached per-variant codec (LetterForIndex/EncodeRack/
  DecodeTiles/DecodeWord) + BlankIndex sentinel; Go parity test.
- backend server edge maps index<->letter (new thin game.Service.GameVariant);
  game.Service domain methods, engine.Game and the robot keep one letter-based
  play path. The gateway forwards indices verbatim (no alphabet table).
- ui: lib/alphabet.ts in-memory cache; codec encodes/decodes indices; premiums.ts
  is geometry-only; the mock seeds a fixture table; the UI normalises display to
  upper case (codec + cache), leaving placement/board/checkword unchanged.

Parity moved to the Go engine.AlphabetTable test; premiums.ts loses its value
tables. Discharges TODO-4.
2026-06-04 16:26:43 +02:00
..

pkg

Shared wire contracts for the Scrabble platform (module scrabble/pkg), imported by both backend and gateway. It carries no logic — only the generated message types and the schemas they come from.

Layout

proto/push/v1/    # backend -> gateway live-event gRPC channel (Push.Subscribe)
                  #   committed generated Go (*.pb.go, *_grpc.pb.go)
fbs/scrabble.fbs  # FlatBuffers edge payloads (one `scrabblefb` namespace)
fbs/scrabblefb/   # committed generated Go for the schema
  • proto/push/v1 is the single gRPC server-stream the backend exposes and the gateway subscribes to (Event{user_id, kind, payload, event_id}); the payload is an opaque FlatBuffers body the gateway forwards verbatim.
  • proto/telegram/v1 is the Telegram connector's RPC contract (Stage 9; Stage 11 added ValidateLoginWidget for the web Login Widget sign-in).
  • fbs holds the client↔gateway request/response and event payloads as FlatBuffers tables. The backend encodes the push payloads from these types; the gateway transcodes the rest to and from the backend's JSON; the UI generates TypeScript from the same .fbs (Stage 7).

Generated code

Committed (CI only builds it); regenerate dev-time after editing the schemas:

make -C pkg tools   # go install protoc-gen-go + protoc-gen-go-grpc
make -C pkg gen     # buf generate (proto) + flatc (fbs)

flatc is pinned to 23.5.26 to match the github.com/google/flatbuffers Go runtime in go.mod; generating with another version is refused.

Workspace wiring

scrabble/pkg is a bare-path module (no dot), so — like scrabble-solver — it cannot be fetched as a versioned dependency. go.work carries use ./pkg and replace scrabble/pkg v0.0.0 => ./pkg; consumers require scrabble/pkg v0.0.0.