update_and_publish.yml

name: Update data files and publish

on:
  schedule:
    - cron: '0 0 * * MON'
  workflow_dispatch:

jobs:

  update:
    name: Auto-update IERS tables
    runs-on: ubuntu-latest
    if: ${{ github.repository == 'astropy/astropy-iers-data' && github.ref_name == 'main' }}
    outputs:
      changed: ${{ steps.check.outputs.changed }}
      new_sha: ${{ steps.commit.outputs.new_sha }}
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
    - name: Download latest IERS files
      run: ./update_data.sh
    - name: Check for changes
      id: check
      run: |
        if ! git diff --exit-code; then
          echo "changed=true" > $GITHUB_OUTPUT
        else
          echo "changed=false" > $GITHUB_OUTPUT
        fi

    - uses: actions/setup-python@v5
      if: steps.check.outputs.changed
      with:
        python-version: '3.x'

    - name: Install tox
      if: steps.check.outputs.changed
      run: pip install tox

    - name: Run preliminary tests
      if: steps.check.outputs.changed
      run: tox -e test

    - name: Commit changes
      id: commit
      if: steps.check.outputs.changed
      run: |
        git config user.name github-actions
        git config user.email github-actions@github.com
        git add astropy_iers_data/data
        git commit -m "Update IERS Earth rotation and leap second tables"
        git push
        echo "new_sha=$(git rev-parse HEAD)" > $GITHUB_OUTPUT

  tests:
    name: Run tests on all platforms
    needs: update
    if: needs.update.outputs.changed
    uses: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml@main
    with:
      checkout_ref: ${{ needs.update.outputs.new_sha }}
      envs: |
        - linux: py310-test
        - macos: py311-test
        - windows: py312-test

  tag:
    name: Tag latest commit to main using calendar version
    needs: tests
    if: needs.update.outputs.changed
    outputs:
       new_tag: ${{ steps.tag_name.outputs.version }}
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          ref: ${{ needs.update.outputs.new_sha }}
      - name: Get tag name from date
        id: tag_name
        run: echo "version=v0.$(date +'%Y.%m.%d.%H.%M.%S')" > $GITHUB_OUTPUT
      - name: Check tag
        run: echo ${{ steps.tag_name.outputs.version }}
      - name: Create tag
        uses: mathieudutour/github-tag-action@v6.2
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          custom_tag: ${{ steps.tag_name.outputs.version }}
          tag_prefix: ""
      - name: Create GitHub release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.tag_name.outputs.version }}
          generate_release_notes: true

  publish:
    name: Publish the release to PyPI
    needs: tag
    if: needs.update.outputs.changed
    uses: OpenAstronomy/github-actions-workflows/.github/workflows/publish_pure_python.yml@main
    with:
      checkout_ref: ${{ needs.tag.outputs.new_tag }}
      upload_to_pypi: true
    secrets:
      pypi_token: ${{ secrets.PYPI_TOKEN }}