F-r-ldraledigplannerare/backend

Backend — Föräldraledigplannerare

FastAPI + Python 3.14, packages managed with uv. Layered architecture (entities → repositories → services → routers) with dependency injection so the database backend (SQLite now, Postgres later) is swappable.

Setup

uv sync                 # install deps (incl. dev group)
uv run uvicorn app.main:app --reload   # run dev server on :8000
uv run pytest           # run tests with coverage
uv run ruff check .     # lint

Configuration

Key env vars (prefix APP_, see .env.example):

• APP_ENV — development (default) | test | production. In production, Settings refuses to start unless APP_JWT_SECRET is a random value of at least 32 characters (the shipped dev default is rejected). Production also disables /docs, /redoc, and /openapi.json.
• APP_JWT_SECRET — required to be a strong, random secret in production.
• APP_LOG_LEVEL — default INFO.

Layout

app/
  config.py            # pydantic-settings (app config + frozen LeaveRules)
  dependencies.py      # DI factories (pick repo impl by settings.database_type)
  entities/            # plain dataclasses (domain)
  models/              # pydantic API schemas
  repositories/        # abstract interfaces
  repositories_impl/   # concrete impls per backend (sqlite/, postgres/)
  services/            # business logic
  routers/             # FastAPI routes
  db/connection.py     # connection + (dev) schema bootstrap
  utils/               # errors, logger

Demo data (manual/browser testing)

scripts/seed_demo.py seeds a realistic, ready-to-explore workspace through the normal service/repository layers (no raw SQL) — a couple workspace with a partner, a child born ~6 months ago, vacation rows for only some years (so the is_assumed badge is visible), day overrides, and a spread of leave wishes (fixed, flexible, and one deliberately underfunded to show a shortfall + remedies + surplus advice). Login credentials are fixed and printed at the end.

uv run python scripts/seed_demo.py            # create once; re-running is a no-op
uv run python scripts/seed_demo.py --reset     # wipe the demo workspace and rebuild

Then open http://localhost:5173 and log in with the printed demo@example.com credentials. Safe to re-run: without --reset it detects the existing demo user and changes nothing; --reset only ever deletes the one demo workspace.

Reference vertical slice

VacationDays is implemented end-to-end (entity → schema → repo interface → SQLite impl → service → router → tests). Copy this slice when adding a new entity.

The inline schema in db/connection.py exists only so dev/tests are self-contained. Production schema is owned by Alembic migrations (a senior task).