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Blomios 60912ebde4 feat(server): API de synchronisation incrémentale LWW (ticket #50 )

Ajoute l'endpoint api/sync_api.dart, les use cases de synchronisation
(application/sync_use_cases.dart) et l'adapter Postgres
(infrastructure/postgres/synced_resource_repository.dart) implémentant
un upsert LWW atomique via CTE (INSERT ... ON CONFLICT ... WHERE
client_updated_at < EXCLUDED.client_updated_at, avec fallback UNION
ALL pour le cas ignoré). dart pub get OK, dart analyze clean, dart
test 15/15 vert. SQL d'upsert relu manuellement et jugé correct ; pas
de test de bout en bout contre un vrai PostgreSQL faute d'accès
Docker dans ce sandbox.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-19 10:23:36 +02:00

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GameTime server

Headless Dart server for future GameTime account, sync and sharing features. This package is separate from the Flutter app at the repository root.

Local run

Install dependencies from this directory:

dart pub get

Run the server:

dart run bin/server.dart

The HTTP server binds to 0.0.0.0 and reads PORT from the environment. When PORT is not set, it listens on 8080.

PORT=9090 dart run bin/server.dart

PostgreSQL

Ticket #49 adds the initial sync-ready PostgreSQL schema and a minimal connection/migration utility.

Database environment variables:

DATABASE_HOST: PostgreSQL host.
DATABASE_PORT: PostgreSQL port, defaults to 5432 when omitted.
DATABASE_NAME: database name.
DATABASE_USER: database user.
DATABASE_PASSWORD: database password.

Apply migrations from server/:

DATABASE_HOST=localhost \
DATABASE_PORT=5432 \
DATABASE_NAME=gametime \
DATABASE_USER=gametime \
DATABASE_PASSWORD=gametime \
dart run bin/migrate.dart

Migrations are read from server/migrations/ in alphabetical order. The v1 runner is intentionally simple; SQL files use idempotent DDL where practical.

The PostgreSQL integration test is skipped unless TEST_DATABASE_URL is set:

TEST_DATABASE_URL=postgres://gametime:gametime@localhost:5432/gametime dart test

Healthcheck:

curl http://localhost:8080/health

Expected response:

{"status":"ok"}

Authentication

Ticket #48 adds account registration, login, logout and bearer-token request authentication.

Endpoints:

POST /auth/register with { "email": "...", "password": "...", "displayName": "..." }.
POST /auth/login with { "email": "...", "password": "...", "deviceLabel": "..." }.
POST /auth/logout with Authorization: Bearer <token>.

Passwords are stored with PBKDF2-HMAC-SHA256 via package:cryptography, using a per-password random salt. API tokens are opaque random values; only a SHA-256 hash of the token is stored in PostgreSQL.

Sync

Ticket #50 adds authenticated incremental sync endpoints using simple last-write-wins conflict resolution based on clientUpdatedAt.

Endpoints:

POST /sync/push with Authorization: Bearer <token>.
GET /sync/pull?since=<serverCursor> with Authorization: Bearer <token>.
POST /sync/exchange with Authorization: Bearer <token>.

serverCursor is an ISO8601 UTC timestamp. For push, it is the greatest server_updated_at currently known for the authenticated user after applying the batch. For pull, it is the greatest serverUpdatedAt returned, or the server clock if no resource is returned.

POST /sync/exchange applies push first, then returns the pull payload with pushResults included so per-item validation errors remain visible to the client.

Scope

Ticket #47 only scaffolds the Dart server, the hexagonal directory layout and the /health endpoint. Ticket #49 adds the first PostgreSQL schema. Ticket #48 adds authentication. Ticket #50 adds sync only; sharing behavior is still implemented in a later ticket.

Upcoming tickets will fill the empty adapters and use cases:

#48: user authentication and API tokens.
#49: PostgreSQL schema and repositories.
#50: incremental sync API.
#51: targeted sharing.
#52: Docker and registry packaging.
#53: API, contract and integration tests.

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