version.yml

name: version

on:
  pull_request:
    paths:
      - "VERSION.txt"

jobs:
  validate-version:
    runs-on: ubuntu-latest
    steps:
      - name: Check out base branch
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.base.ref }}
      - name: Get old version
        run: |
          old_version="$(head -1 VERSION.txt)"
          echo "Old version: $old_version"
          echo "old_version=$old_version" >> $GITHUB_ENV
      - name: Check out head branch
        uses: actions/checkout@v3
      - name: Get new version
        run: |
          new_version="$(head -1 VERSION.txt)"
          echo "New version: $new_version"
          echo "new_version=$new_version" >> $GITHUB_ENV
      - name: Compare versions
        run: dpkg --compare-versions "${{ env.old_version }}" lt "${{ env.new_version }}"
      - name: Check stable version validity
        if: github.event.pull_request.base.ref == 'master'
        run: |
          pattern=^\(0\|[1-9][0-9]*\)\.\(0\|[1-9][0-9]*\)\.\(0\|[1-9][0-9]*\)$
          if [[ ${{ env.new_version }} =~ $pattern ]]; then
            echo "New version is valid."; exit 0
          else
            echo "New version is invalid."; exit 1
          fi
      - name: Check development version validity
        if: github.event.pull_request.base.ref != 'master'
        run: |
          pattern=^\(0\|[1-9][0-9]*\)\.\(0\|[1-9][0-9]*\)dev\(0\|[1-9][0-9]*\)$
          if [[ ${{ env.new_version }} =~ $pattern ]]; then
            echo "New version is valid."; exit 0
          else
            echo "New version is invalid."; exit 1
          fi