name: CI

on:
  push:
    branches: ["**"]
  pull_request:
    branches: ["**"]

jobs:
  lint:
    runs-on: ubuntu-latest
    # Custom image (see .gitea/ci-image/Dockerfile): the official
    # sagemath/sagemath image is amd64-only and this runner is arm64, and
    # ruff/pytest are baked in here so jobs don't reinstall them every run.
    container:
      image: gitea.piribauer.ch/julian/sage-ci:latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Preparse .sage files
        # Turns each *.sage file into real Python (*.sage.py) so ruff can
        # parse it, and prepends the `from sage.all import *` that `sage`
        # normally injects at runtime, so Sage's globals (ZZ, var, matrix, ...)
        # resolve instead of looking like undefined names.
        #
        # The conda-forge `sage` CLI has no `--preparse` flag (unlike the
        # classical sage script the image was originally written against), so
        # this calls the same preparser Sage itself uses, directly in Python.
        run: |
          python - <<'PYEOF'
          import pathlib
          from sage.repl.preparse import preparse_file

          for f in pathlib.Path(".").rglob("*.sage"):
              if f.parts and f.parts[0] == "playground":
                  continue
              out = preparse_file(f.read_text())
              f.with_suffix(f.suffix + ".py").write_text(
                  "from sage.all import *  # noqa: F401,F403\n" + out
              )
          PYEOF

      - name: ruff check
        # --no-respect-gitignore: *.sage.py is gitignored (it's generated, see
        # the previous step) but that's exactly what we need to lint here.
        # `python` here is the conda env's own interpreter -- it already has
        # sage/ruff/pytest importable, `sage --python` isn't a real flag on
        # the conda-forge sage CLI.
        run: python -m ruff check --no-respect-gitignore .

  test:
    runs-on: ubuntu-latest
    needs: lint
    container:
      image: gitea.piribauer.ch/julian/sage-ci:latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Run tests
        run: python -m pytest tests/