upstream-refresh.yaml

name: Update Ensmallen
on:
  workflow_dispatch:
  schedule:
    - cron:  '0 10 * * *'
jobs:
  updateEnsmallen:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Get Latest Ensmallen Tagged Release
        id: ensmallen-lib
        run: |
          # Ping version information upstream
          ENSMALLEN_RELEASE_JSON=$(curl -sL https://api.github.com/repos/mlpack/ensmallen/releases/latest)
          ENSMALLEN_RELEASE_VERSION=$(jq -r ".tag_name" <<< "$ENSMALLEN_RELEASE_JSON")
          ENSMALLEN_RELEASE_DATE=$(jq -r ".published_at" <<< "$ENSMALLEN_RELEASE_JSON" | sed 's/T.*//g')
          echo "release_tag=$(echo $ENSMALLEN_RELEASE_VERSION)" >> $GITHUB_OUTPUT
          echo "release_date=$(echo $ENSMALLEN_RELEASE_DATE)" >> $GITHUB_OUTPUT
          # Extract out version information from git repository
          ENSMALLEN_VERSION_MAJOR=$(grep -i ".*#define ENS_VERSION_MAJOR.*" inst/include/ensmallen_bits/ens_version.hpp | grep -o "[0-9]*")
          ENSMALLEN_VERSION_MINOR=$(grep -i ".*#define ENS_VERSION_MINOR.*" inst/include/ensmallen_bits/ens_version.hpp | grep -o "[0-9]*")
          ENSMALLEN_VERSION_PATCH=$(grep -i ".*#define ENS_VERSION_PATCH.*" inst/include/ensmallen_bits/ens_version.hpp | grep -o "[0-9]*")
          # Combine values to match release tag information
          ENSMALLEN_VERSION_VALUE=${ENSMALLEN_VERSION_MAJOR}.${ENSMALLEN_VERSION_MINOR}.${ENSMALLEN_VERSION_PATCH}
          # Set the current release tag
          echo "current_tag=$(echo $ENSMALLEN_VERSION_VALUE)" >> $GITHUB_OUTPUT
      - name: Update Ensmallen
        if: steps.ensmallen-lib.outputs.current_tag != steps.ensmallen-lib.outputs.release_tag
        env:
          CURRENT_TAG: ${{ steps.ensmallen-lib.outputs.current_tag }}
          RELEASE_TAG: ${{ steps.ensmallen-lib.outputs.release_tag }}
          RELEASE_DATE: ${{ steps.ensmallen-lib.outputs.release_date }}
        run: |
          # Delete the dist directory and index.html
          rm -fr inst/include/ensmallen_bits inst/include/ensmallen.hpp
          # Download the release
          curl -sL -o $RELEASE_TAG https://api.github.com/repos/mlpack/ensmallen/tarball/$RELEASE_TAG
          # Get the prefix directory coded to commit version to access
          # specific files in the tar  e.g. mlpack-ensmallen-0431e31
          TAR_PREFIX_DIR=$(tar -tzf $RELEASE_TAG | head -1 | cut -f1 -d"/")
          # Extract the update files directly into the include directory.
          # Strip away two levels ${TAR_PREFIX_DIR}/include.
          tar -xzf $RELEASE_TAG -C inst/include/ --strip-components=2 ${TAR_PREFIX_DIR}/include/ensmallen_bits ${TAR_PREFIX_DIR}/include/ensmallen.hpp
          # Extract HISTORY.md file into the tool directory for a comparison.
          # Strip away one-level ${TAR_PREFIX_DIR}
          tar -xzf $RELEASE_TAG -C tools/ --strip-components=1 ${TAR_PREFIX_DIR}/HISTORY.md
          # Begin work on formatting NEWS entry
          # Obtain the double quoted version name
          ENSMALLEN_VERSION_NAME=$(grep -i ".*#define ENS_VERSION_NAME.*" inst/include/ensmallen_bits/ens_version.hpp | grep -o '".*"')
          NEW_RCPPENSMALLEN_VERSION=0.${RELEASE_TAG}.1
          # Extract out the new changes using diff
          # Steps: Remove blank lines, delete header, replace * with -, indent by 1
          NEWS_UPDATE=$(diff --unchanged-group-format="" tools/HISTORY.md tools/HISTORYold.md | sed '/^$/d' | sed '/^#/d' | sed 's/\*/-/' |  sed 's/^/ /')
          # Set the new history to be old
          mv tools/HISTORY.md tools/HISTORYold.md
          # Prepend new update notes to NEWS.md with a heredoc
          cat <<-EOF > NEWS.md
          # RcppEnsmallen ${NEW_RCPPENSMALLEN_VERSION}

          - Upgraded to ensmallen ${RELEASE_TAG}: ${ENSMALLEN_VERSION_NAME} ($RELEASE_DATE)
          ${NEWS_UPDATE}

          $(cat NEWS.md)
          EOF
          # Update R package version
          sed -i "s/Version:.*/Version: ${NEW_RCPPENSMALLEN_VERSION}/g" DESCRIPTION
          # Prepend entry to ChangeLog with a heredoc
          TAB="$(printf '\t')"
          cat <<-EOF > ChangeLog
          $(date +"%Y-%m-%d")  James Balamuta  <balamut2@illinois.edu>

          ${TAB}* DESCRIPTION (Version): Release ${RELEASE_TAG}
          ${TAB}* NEWS.md: Update for Ensmallen release ${RELEASE_TAG}
          ${TAB}* inst/include/ensmallen_bits: Upgraded to Ensmallen ${RELEASE_TAG}
          ${TAB}* inst/include/ensmallen.hpp: ditto

          $(cat ChangeLog)
          EOF
          # Remove the release tar.gz
          rm $RELEASE_TAG
      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v5
        with:
          commit-message: Upgrade ensmallen to ${{ steps.ensmallen-lib.outputs.release_tag }}
          title: Upgrade ensmallen to ${{ steps.ensmallen-lib.outputs.release_tag }}
          body: |
            Updates [mlpack/ensmallen][1] to ${{ steps.ensmallen-lib.outputs.release_tag }}.

            Auto-generated by [create-pull-request][2]

            [1]: https://github.com/mlpack/ensmallen
            [2]: https://github.com/peter-evans/create-pull-request
          labels: dependencies, automated pr
          branch: ensmallen-lib-updates-${{ steps.ensmallen-lib.outputs.release_tag }}