build-cran-package.yml

name: Build CRAN package

# Builds the CRAN-ready source tarball (RClickhouse_<version>.tar.gz) with
# `R CMD build`, which respects .Rbuildignore and excludes VCS / CI files.
# The tarball is uploaded as a workflow artifact and, when triggered by a
# version tag, published as a release asset that can be uploaded directly
# to CRAN (https://cran.r-project.org/submit.html).

on:
  push:
    tags:
      - 'v*'        # e.g. push tag v0.6.11 to cut a release
  workflow_dispatch: # allow building the tarball manually from the Actions tab

permissions:
  contents: write    # needed to create/update the GitHub release

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@v4

      - name: Set up R
        uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - name: Build source tarball
        run: |
          R CMD build .
          PKG_FILE="$(ls -1 RClickhouse_*.tar.gz | head -n1)"
          echo "PKG_FILE=${PKG_FILE}" >> "$GITHUB_ENV"
          echo "Built ${PKG_FILE}"
          echo "::group::Tarball contents"
          tar tzf "${PKG_FILE}"
          echo "::endgroup::"

      - name: Upload tarball as workflow artifact
        uses: actions/upload-artifact@v4
        with:
          name: cran-package
          path: RClickhouse_*.tar.gz
          if-no-files-found: error

      - name: Publish tarball to GitHub release
        if: startsWith(github.ref, 'refs/tags/')
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          # Create the release if it does not exist yet, otherwise just add
          # the asset (overwriting any previous upload with the same name).
          if ! gh release view "${GITHUB_REF_NAME}" >/dev/null 2>&1; then
            gh release create "${GITHUB_REF_NAME}" \
              --title "${GITHUB_REF_NAME}" \
              --notes "CRAN source package \`${PKG_FILE}\` — upload this file directly to CRAN."
          fi
          gh release upload "${GITHUB_REF_NAME}" "${PKG_FILE}" --clobber