name: CI

on:
  pull_request:
  push:
    branches: [master]

concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

env:
  PYTHONDONTWRITEBYTECODE: 1

jobs:
  lint:
    name: Lint
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install system dependencies
        run: sudo apt-get update && sudo apt-get install -y libcairo2-dev

      - uses: astral-sh/setup-uv@v6
        with:
          python-version-file: ".python-version"
          enable-cache: true

      - run: uv sync --locked

      - name: Pre-commit hooks (ruff, formatting, file hygiene)
        run: uv run prek run --all-files --show-diff-on-failure

      - name: Django system checks
        run: uv run python manage.py check

      - name: Check for missing migrations
        run: uv run python manage.py makemigrations --check --dry-run

  test:
    name: Test
    runs-on: ubuntu-latest
    env:
      DATABASE_ENGINE: sqlite3
      DATABASE_NAME: db.sqlite3
    steps:
      - uses: actions/checkout@v4

      - name: Install system dependencies
        run: sudo apt-get update && sudo apt-get install -y libcairo2-dev

      - uses: astral-sh/setup-uv@v6
        with:
          python-version-file: ".python-version"
          enable-cache: true

      - uses: actions/setup-node@v4
        with:
          node-version: 24
          cache: npm

      - run: uv sync --locked

      - name: Build frontend assets
        run: |
          npm ci
          npm run build

      - run: uv run python manage.py collectstatic --noinput

      - name: Run tests
        run: uv run pytest -n auto --cov

      - name: Coveralls
        run: uv run coveralls --service=github
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  docker:
    name: Docker image
    runs-on: ubuntu-latest
    needs: [lint, test]
    permissions:
      contents: read
      packages: write
    steps:
      - uses: actions/checkout@v4

      - uses: docker/setup-qemu-action@v3

      - uses: docker/setup-buildx-action@v3

      # Only authenticate when we are actually going to push (never for PRs, which may come from forks)
      - name: Log in to GHCR
        if: github.event_name == 'push'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ github.repository }}
          tags: |
            type=raw,value=latest
            type=sha

      - name: Build (and push on master)
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name == 'push' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max