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HealthLog/CONTRIBUTING.md
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Marc-André BombeckandClaude Opus 4.7 e7b6b27451 chore(community): add Code of Conduct (Contributor Covenant 2.1)
Adopts the canonical Contributor Covenant 2.1 (verbatim, with
conduct@bombeck.io as the enforcement contact). CONTRIBUTING.md links
to it.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-10 15:23:07 +02:00

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# Contributing to HealthLog
Contributions are welcome. This guide covers how to set up the project and submit changes.
## Prerequisites
- Node.js 20+
- pnpm
- PostgreSQL 16+ (or Docker)
- Git
## Setup
```bash
git clone https://github.com/MBombeck/HealthLog.git
cd HealthLog
cp .env.example .env
```
Edit `.env` and configure at minimum:
```
POSTGRES_PASSWORD=<base64, 24 bytes>
DATABASE_URL="postgresql://healthlog:${POSTGRES_PASSWORD}@db:5432/healthlog"
SESSION_SECRET=<64-char hex>
ENCRYPTION_KEY=<64-char hex>
API_TOKEN_HMAC_KEY=<64-char hex>
```
Generate the four secrets:
```bash
echo "POSTGRES_PASSWORD=$(openssl rand -base64 24)" >> .env
echo "SESSION_SECRET=$(openssl rand -hex 32)" >> .env
echo "ENCRYPTION_KEY=$(openssl rand -hex 32)" >> .env
echo "API_TOKEN_HMAC_KEY=$(openssl rand -hex 32)" >> .env
```
### With Docker (database only)
```bash
docker compose up -d db
pnpm install
pnpm db:generate
pnpm db:migrate
pnpm dev
```
### Full Docker
```bash
docker compose up -d
```
## Development Workflow
```bash
pnpm dev # Start dev server (http://localhost:3000)
pnpm lint # ESLint
pnpm format:check # Prettier (check)
pnpm typecheck # TypeScript strict mode
pnpm test # Vitest
pnpm build # Next.js production build
```
All five checks must pass before submitting a PR. The full one-liner that mirrors CI:
```bash
pnpm typecheck && pnpm lint && pnpm test && pnpm format:check && pnpm build
```
## Code Conventions
- **TypeScript strict mode** -- avoid `any`. Where it's truly unavoidable (e.g. variadic Next.js handler signatures in `src/lib/api-handler.ts`), document the reason inline.
- **English-default UI** -- the default locale is English. German is user-selectable. Code, comments, commit messages, and docs are English. All user-facing strings go through `t("key")` with translations in both `messages/en.json` and `messages/de.json`. The `i18n-locale-integrity.test.ts` suite blocks merges if keys drift between locales or duplicate at any nesting depth.
- **API responses** follow the `{ data, error }` envelope via `apiSuccess()` / `apiError()` in `src/lib/api-response.ts`. Wrap every route handler in `apiHandler()` (`src/lib/api-handler.ts`) for error handling, structured Wide-Event logging, and `x-request-id` propagation.
- **Zod v4** (`import { ... } from "zod/v4"`) for input validation in API routes and forms.
- **shadcn/ui** components (new-york style) for UI primitives.
- **Dracula theme** -- dark mode is the default; a `light`/`system` toggle is exposed in the topbar. Chart and accent colors use the `--dracula-*` CSS tokens so both themes stay coherent.
See `CLAUDE.md` for detailed architecture and patterns.
## Database Changes
```bash
# After modifying prisma/schema.prisma:
pnpm db:migrate # Creates a new migration
pnpm db:generate # Regenerates Prisma client
```
Always include the migration file in your PR.
## Branch Model
HealthLog uses a long-lived `develop` branch for daily work and reserves `main` for releases.
```
feature/* ──┐
├──► develop ──► (release-merge) ──► main ──► tag vX.Y.Z ──► GHCR build ──► Coolify deploy
fix/* ──┘ │
└──► hotfix/* ──► main + tag, then merge back to develop
```
Two simple rules:
- **`develop` is the daily target.** Open feature, fix, test, and docs PRs against `develop`. Builds do not run on `develop` pushes — the branch is free of release ceremony.
- **`main` is release-only.** It receives a single release-merge per version, gets tagged (`v1.4.20`, etc.), and that tag is what triggers the Docker image build, the GHCR push, and the Coolify deploy. Pushes to `main` outside a release are reserved for hotfixes that cannot wait for the next cycle.
If a critical bug needs a hotfix:
1. Branch from `main`: `git checkout -b hotfix/something main`
2. Land the fix; tag a patch release on `main`
3. Merge `main` back into `develop` so the next release inherits the fix
End users: track the latest `v*` tag (or `:latest` on GHCR). The `main` branch always equals the latest release.
Contributors: track `develop`. PRs target `develop`.
## Pull Requests
1. Fork the repository
2. Create a feature branch off `develop` (`git checkout -b feature/your-feature develop`)
3. Make your changes
4. Ensure all checks pass (`pnpm typecheck && pnpm lint && pnpm test && pnpm format:check && pnpm build`)
5. Submit a PR against `develop` with a clear description of the changes
## Code of Conduct
This project follows the [Contributor Covenant 2.1](CODE_OF_CONDUCT.md). By participating, you agree to uphold its standards. Reports of unacceptable behavior go to `conduct@bombeck.io`.
## Security
If you find a security vulnerability, **do not open a public issue**. See [SECURITY.md](SECURITY.md) for responsible disclosure instructions.
## License
By contributing, you agree that your contributions will be licensed under the [AGPL-3.0](LICENSE) license.