check-pull-requests.yaml

name: Check pull requests
on:
  pull_request:
    types: [opened, edited, labeled, unlabeled]
    branches:
    - master
    - release/v*
jobs:
  check_pull_requests:
    name: Check pull requests
    permissions:
      issues: write # Required to create a comment on the pull request
      pull-requests: write # Required to create a comment on the pull request
    runs-on: ubuntu-latest
    steps:
      - name: Check pull requests
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # 7.0.1
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            // Skip draft pull requests
            if (context.payload.pull_request.draft) {
              return
            }
            // Check at least one type and (component or instrumentation) label is set
            const labels = context.payload.pull_request.labels.map(label => label.name)
            const ignoreReleaseNotes = labels.filter(label => label == 'tag: no release notes').length > 0
            const hasTypeLabel = labels.filter(label => label.startsWith('type:')).length > 0
            const hasComponentLabel = labels.filter(label => label.startsWith('comp:')).length > 0
            const hasInstrumentationLabel = labels.filter(label => label.startsWith('inst:')).length > 0
            const labelsCheckFailed = !ignoreReleaseNotes && (!hasTypeLabel || (!hasComponentLabel && !hasInstrumentationLabel));
            if (labelsCheckFailed) {
              core.setFailed('Please add at least one type, and one component or instrumentation label to the pull request.')
            }
            // Check title does not contain tag
            const title = context.payload.pull_request.title
            const titleCheckFailed = title.match(/\[.*\]/)
            if (titleCheckFailed) {
              core.setFailed('Please remove the tag from the pull request title.')
            }
            // Add comment to the pull request
            if (labelsCheckFailed || titleCheckFailed) {
              // Define comment body
              const commentMarker = '<!-- dd-trace-java-check-pull-requests-workflow -->'
              const commentBody = 'Hi! 👋 Thanks for your pull request! 🎉\n\n' +
                  'To help us review it, please make sure to:\n\n' +
                  (labelsCheckFailed ? '* Add at least one type, and one component or instrumentation label to the pull request\n' : '') +
                  (titleCheckFailed ? '* Remove the tag from the pull request title\n' : '') +
                  '\nIf you need help, please check our [contributing guidelines](https://github.com/DataDog/dd-trace-java/blob/master/CONTRIBUTING.md).' +
                  '\n\n' + commentMarker
              // Look for previous comment
              const comments = await github.rest.issues.listComments({
                issue_number: context.payload.pull_request.number,
                owner: context.repo.owner,
                repo: context.repo.repo
              })
              const previousComment = comments.data.find(comment => comment.body.includes(commentMarker))
              if (previousComment) {
                // Update previous comment
                await github.rest.issues.updateComment({
                  comment_id: previousComment.id,
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  body: commentBody
                })
              } else {
                // Create new comment
                await github.rest.issues.createComment({
                  issue_number: context.payload.pull_request.number,
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  body: commentBody
                })
              }
            }