Files
noitu/README.md
T
tiennm99 48b3b3c8ac feat(proto): add protobuf wire contract and cross-language codegen
proto/noitu/v1/game.proto is the single source of truth for every WebSocket
message. buf generates Go types into server/gen and JavaScript types into
web/src/lib/proto; both trees are committed so building needs no codegen
toolchain.

The Go suite emits binary fixtures into proto/testdata and the JavaScript suite
decodes the same bytes, so the two generated clients are checked against one
artifact rather than against each other's assumptions. CI lints the schema,
rejects breaking changes against main, and fails when the committed generated
trees drift from the schema.

game.NumRejectReasons and game.NumEndReasons let the mapping tests prove every
engine reason has a wire value without guessing where the enum ends.
2026-09-05 12:06:58 +07:00

4.6 KiB

noitu

Trò chơi nối từ tiếng Việt trên web — chơi với máy hoặc đấu 1v1 trực tuyến.

A web implementation of the Vietnamese word-chain game nối từ: each player submits a meaningful word of at least 2 syllables whose first syllable matches the last syllable of the previous word. No word may be reused. Fail to answer in time and you lose.

ngôn ngữ → ngữ pháp → pháp luật → luật lệ → ...

Status

In development. See plans/260904-1125-noi-tu-web-game/plan.md for the implementation plan and phase breakdown.

Architecture

The server is authoritative: the browser never holds the wordlist, so word validation cannot be bypassed, and the bot and player-vs-player paths share one rule implementation.

SvelteKit SPA  ──WebSocket + Protobuf──►  Go server  ──►  SQLite dictionary
Component Choice
Frontend SvelteKit 2 / Svelte 5 (JavaScript), adapter-static
Transport WebSocket, Protobuf binary frames (@bufbuild/protobuf ↔ protoc-gen-go)
Backend Go, coder/websocket
Dictionary SQLite via modernc.org/sqlite (CGo-free), read-only at runtime

The wire contract

proto/noitu/v1/game.proto is the single source of truth for every message crossing the WebSocket. buf generates the Go types into server/gen/ and the JavaScript types into web/src/lib/proto/; both trees are committed, and neither side hand-writes a message type.

The Go test suite emits binary fixtures into proto/testdata/, and the JavaScript suite decodes those same bytes — so the two generated clients are checked against one artifact rather than against each other's assumptions. Regenerate the fixtures with cd server && go test ./internal/wsapi -update whenever the schema changes.

Setup

Requires Go 1.25+, Node 20+, and optionally make. buf is needed only to change the WebSocket schema — the generated code is committed, so building and running the project does not require it.

make fetch-dict   # one-time: downloads the ~179 MB upstream dictionary into data/
make dict         # derives data/noitu.db (the game's wordlist) from it
make test         # run all tests
make run          # build and start the server

make fetch-dict is a one-time cost per machine. Neither database file is committed; both are build artifacts. See data/ATTRIBUTION.md.

Make targets

Target Does
fetch-dict Download the upstream dictionary.db (~179 MB) into data/
dict Derive data/noitu.db from the upstream database
server Build the Go server binary
web Build the SvelteKit frontend to static assets
proto Regenerate the Go and JS wire types from proto/ (needs buf)
proto-check Lint the schema and verify the committed generated code is in sync
test Run Go and JavaScript tests
run Build and run the server locally
verify-dict Re-check the downloaded dictionary against its pinned SHA-256

Without make

make is not installed everywhere (notably Windows). Every target is a thin wrapper:

# fetch-dict
curl -L -C - -o data/dictionary.db   https://github.com/minhqnd/dictionary/releases/download/v2.0.0/dictionary.db

# dict
cd server && go run ./cmd/build-dictionary --in ../data/dictionary.db --out ../data/noitu.db

# test
cd server && go vet ./... && go test ./... -race

# server
cd server && CGO_ENABLED=0 go build -o ../noitu-server ./cmd/noitu-server

# proto (only when proto/noitu/v1/game.proto changes)
cd web && npm ci
buf generate && buf lint

License

This project is distributed under two licenses, applying to different artifacts. See NOTICE for the full statement.

Artifact License
All source code (server/, web/, proto/) Apache-2.0
Dictionary data (data/noitu.db) CC BY-SA 4.0

The dictionary is derived from minhqnd/dictionary (data licensed CC BY-SA 4.0), which itself aggregates Wiktionary and other Vietnamese dictionary sources. CC BY-SA is a share-alike license: any redistribution of the derived database — including inside a container image — must carry the same license, the attribution, and the record of modifications recorded in data/ATTRIBUTION.md.

The database is loaded at runtime from a file and is never embedded or linked into the Go binary, keeping the two licensing regimes on separate artifacts.