name: CI

on:
  push:
    branches-ignore:
      - main
  pull_request:

permissions:
  contents: read
  packages: write

jobs:
  lint-and-test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: "3.12"
          cache: pip

      - run: pip install -e ".[dev]"
      - run: python -m ruff check steward/ tests/
      - run: python -m pytest tests/ -v

  docker-build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Log in to GHCR
        # Only log in when pushing (not on PRs from forks)
        if: github.event_name == 'push'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ github.repository }}
          tags: |
            # feature-branch push  →  ghcr.io/…/steward:my-feature-branch
            type=ref,event=branch
            # pull-request         →  ghcr.io/…/steward:pr-42
            type=ref,event=pr
            # always               →  ghcr.io/…/steward:sha-abc1234
            type=sha,prefix=sha-

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          # Push on branch pushes; only validate (no push) on PRs
          push: ${{ github.event_name == 'push' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}