check_version.yaml

name: Check Version Bump

on:
  pull_request:
    branches:
      - devel

jobs:
  check-version:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout repository
      uses: actions/checkout@v2

    - name: Install system dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y libcurl4-openssl-dev libssl-dev

    - name: Setup R
      uses: r-lib/actions/setup-r@v2

    - name: Install R dependencies
      run: Rscript -e 'install.packages(c("devtools", "usethis", "desc"), repos = "http://cran.rstudio.com/")'

    - name: Get current version
      id: get_current_version
      run: echo "::set-output name=current_version::$(grep Version DESCRIPTION | cut -d' ' -f2)"

    - name: Get previous version from main branch
      run: |
        git fetch origin main
        git checkout origin/main -- DESCRIPTION
        echo "::set-output name=previous_version::$(grep Version DESCRIPTION | cut -d' ' -f2)"
      id: get_previous_version

    - name: Compare versions
      run: |
        echo "Current version: ${{ steps.get_current_version.outputs.current_version }}"
        echo "Previous version: ${{ steps.get_previous_version.outputs.previous_version }}"
        if [[ "${{ steps.get_current_version.outputs.current_version }}" == "${{ steps.get_previous_version.outputs.previous_version }}" ]]; then
          echo "Version has not been changed."
          exit 1
        else
          echo "Version has been changed."
        fi

    - name: Add comment if version not changed
      if: failure()
      uses: actions/github-script@v4
      with:
        script: |
          github.issues.createComment({
            owner: context.repo.owner,
            repo: context.repo.repo,
            issue_number: context.issue.number,
            body: 'The version of the package in the DESCRIPTION file has not been changed. Please update the version.'
          })
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}