pr_title.yml

name: PR Title Check

on:
  pull_request_target:
    types: [opened, edited, synchronize, reopened]
jobs:
  commitlint:
    name: PR title / description conforms to semantic-release
    runs-on: ubuntu-latest
    steps:
      - uses: actions/setup-node@v4
        with:
          node-version: "20"
      - run: npm install @commitlint/config-conventional
      - run: >
          echo 'module.exports = {
            // Workaround for https://github.com/dependabot/dependabot-core/issues/5923
            "ignores": [(message) => /^Bumps \[.+]\(.+\) from .+ to .+\.$/m.test(message)],
            "rules": {
              "body-max-line-length": [0, "always", Infinity],
              "footer-max-line-length": [0, "always", Infinity],
              "body-leading-blank": [0, "always"]
            }
          }' > .commitlintrc.js
      - run: npx commitlint --extends @commitlint/config-conventional --verbose <<< $COMMIT_MSG
        env:
          COMMIT_MSG: >
            ${{ github.event.pull_request.title }}

            ${{ github.event.pull_request.body }}
      - if: failure()
        uses: actions/github-script@v7
        with:
          script: |
            const message = `**ACTION NEEDED**
              
              Substrait follows the [Conventional Commits
              specification](https://www.conventionalcommits.org/en/v1.0.0/) for
              release automation.

              The PR title and description are used as the merge commit message.\
              Please update your PR title and description to match the specification.
              `
            // Get list of current comments
            const comments = await github.paginate(github.rest.issues.listComments, {
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number
            });
            // Check if this job already commented
            for (const comment of comments) {
              if (comment.body === message) {
                return // Already commented
              }
            }
            // Post the comment about Conventional Commits
            github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body: message
            })
            core.setFailed(message)