pr-semver-title.yml

name: Check PR title for proper semver

on:
  pull_request:
    branches:
      - beta
      - stable

  workflow_dispatch:
    inputs:
      pr_number:
        description: "Pull request number to check"
        required: true
        type: number

jobs:
  check-pr-semver-title:
    runs-on: ubuntu-latest
    name: Validate PR Title

    steps:
      - name: Get PR details
        id: find_pr
        run: |
          if [ -z "${{ github.event.inputs.pr_number }}" ]; then
            prNumber=${{ github.event.pull_request.number }}
          else
            prNumber=${{ github.event.inputs.pr_number }}
          fi
          echo "prNumber=$prNumber" | tee /dev/stderr >> "$GITHUB_OUTPUT"
      - name: Fetch pull request title
        id: pr_title
        uses: actions/github-script@v7
        with:
          script: |
            const [owner, repo] = process.env.GITHUB_REPOSITORY.split("/");
            const prNumber = ${{ steps.find_pr.outputs.prNumber }};
            const { data: pull_request } = await github.rest.pulls.get({
              owner: owner,
              repo: repo,
              pull_number: prNumber
            });
            return pull_request.title;
      - name: Check PR title format
        run: |
          version="${{ steps.pr_title.outputs.result }}"
          if ! [[ "$version" =~ ^(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(-((0|[1-9][0-9]*|[0-9]*[a-zA-Z-][0-9a-zA-Z-]*)(\.(0|[1-9][0-9]*|[0-9]*[a-zA-Z-][0-9a-zA-Z-]*))*))?(\+([0-9a-zA-Z-]+(\.[0-9a-zA-Z-]+)*))?$ ]]; then
            echo "Invalid semver: '$version'!"
            exit 1
          fi
          echo "Version is proper semver: $version"