fete

A privacy-focused, self-hostable web app for event announcements and RSVPs. An alternative to Facebook Events or Telegram groups — reduced to the essentials.

What it does

• Create events with title, description, date, time, location, and an expiry date
• Share a single link — guests open it, see all details, and RSVP
• No accounts, no login — the organizer gets a secret token stored in the browser; guests just enter a name
• Automatic cleanup — all event data is permanently deleted after the expiry date
• Works offline-first — installable as a PWA, local event list stored entirely in the browser

For organizers

• Edit event details, post update messages, manage the guest list
• Cancel or delete events at any time
• Generate a QR code for posters and flyers
• Optionally pick a color theme or header image (via self-hosted Unsplash proxy)

For guests

• RSVP with just a name — no personal data required
• Bookmark events locally across devices
• Download .ics or subscribe via webcal:// for calendar integration
• See highlighted changes and new update indicators on revisit

Privacy by design

• No analytics, no telemetry, no external requests from the client
• No CDNs, no Google Fonts, no tracking-capable dependencies
• Server never logs PII or IP addresses
• Data retention is bounded by a mandatory expiry date

Tech stack

Layer	Technology
Backend	Java (latest LTS), Spring Boot, Maven
Frontend	Vue 3, Vite, TypeScript
Database	PostgreSQL (external, not bundled)
Architecture	SPA + RESTful API, hexagonal/onion backend
Deployment	Single Docker container

Development

Prerequisites

• Java (latest LTS) + Maven wrapper (./mvnw, included)
• Node.js (latest LTS) + npm
• Docker (for running backend tests via Testcontainers)

Project structure

fete/
├── backend/      # Spring Boot application (Maven)
├── frontend/     # Vue 3 SPA (Vite, TypeScript)
├── spec/         # User stories, personas, implementation phases
└── CLAUDE.md     # Project statutes and AI agent instructions

Running tests

# Backend
cd backend && ./mvnw test

# Frontend
cd frontend && npm run test:unit

Running the backend locally

Option A: Without external PostgreSQL (Testcontainers)

cd backend && ./mvnw spring-boot:test-run

Starts the app with a Testcontainers-managed PostgreSQL that is created and destroyed automatically. Requires Docker.

Option B: With external PostgreSQL

cd backend
cp src/main/resources/application-local.properties.example \
   src/main/resources/application-local.properties
# Edit application-local.properties if your PostgreSQL uses different credentials
./mvnw spring-boot:run -Dspring-boot.run.profiles=local

Building

# Backend
cd backend && ./mvnw package

# Frontend
cd frontend && npm run build

Code quality

Automated quality gates run as Claude Code hooks during AI-assisted development. They provide immediate feedback after every file edit and block the agent from finishing when tests fail.

Backend (Java / Maven)

After editing a *.java file (PostToolUse hook):

What	Command	Fails on
Checkstyle	./mvnw compile	Style violations (Google Style)
Java compiler	./mvnw compile	Compile errors

Checkstyle enforces Google Style (2-space indent, import order, Javadoc on public types) and is bound to the validate phase, so it runs automatically as part of every compile. Covers both src/main and src/test.

When the agent finishes (Stop hook — only if backend/src/ has uncommitted changes):

What	Command	Fails on
JUnit 5	./mvnw test	Test failures (fail-fast, stops at 1)
ArchUnit (9 rules)	./mvnw test	Hexagonal architecture violations

ArchUnit enforces hexagonal boundaries: domain must not depend on adapters, application, config, or Spring; ports must be interfaces; web and persistence adapters must not cross-depend.

Not hooked (run manually):

What	Command	Fails on
SpotBugs	./mvnw verify	Potential bugs, null dereferences, resource leaks

Frontend (TypeScript / Vue)

After editing a *.ts or *.vue file (PostToolUse hook):

What	Command	Fails on
TypeScript (strict)	vue-tsc --noEmit	Type errors
oxlint + ESLint	oxlint, eslint	Lint violations

When the agent finishes (Stop hook — only if frontend/src/ has uncommitted changes):

What	Command	Fails on
Vitest	npm run test:unit -- --run	Test failures (fail-fast, stops at 1)

Not hooked (run manually or via editor):

What	Command	Fails on
Prettier	npm run format	Formatting issues

Deployment

Docker Compose

The app ships as a single Docker image. It requires an external PostgreSQL database.

services:
  db:
    image: postgres:17-alpine
    environment:
      POSTGRES_DB: fete
      POSTGRES_USER: fete
      POSTGRES_PASSWORD: changeme
    volumes:
      - fete-db:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U fete"]
      interval: 5s
      timeout: 3s
      retries: 5

  app:
    image: git.bahamut.nitrix.one/nitrix/fete:latest
    ports:
      - "8080:8080"
    environment:
      DATABASE_URL: jdbc:postgresql://db:5432/fete
      DATABASE_USERNAME: fete
      DATABASE_PASSWORD: changeme
    depends_on:
      db:
        condition: service_healthy

volumes:
  fete-db:

Environment variables

Variable	Required	Default	Description
DATABASE_URL	Yes	—	JDBC connection string
DATABASE_USERNAME	Yes	—	Database username
DATABASE_PASSWORD	Yes	—	Database password

License

GPL — see LICENSE for details.