semver_label_check.yml

name: validate pr labels
on:
  pull_request_target:
    types: [labeled, unlabeled, opened, reopened, synchronize, ready_for_review]
jobs:
  check-pr:
    name: Validate Release Labels
    runs-on: ubuntu-20.04
    steps:
      # ensure that a semantic version label is present
      - name: check_semver_labels
        if: >
            !(contains(github.event.pull_request.labels.*.name, 'semver:feature') 
              || contains(github.event.pull_request.labels.*.name, 'semver:patch'))
        uses: actions/github-script@v3
        with:
          script: |
              core.setFailed('No semver label was found on this PR!')

      # ensure that the 'for next beta' label is not present
      - name: check_for_next_beta_labels
        if: >
            contains(github.event.pull_request.labels.*.name, 'for next beta')
        uses: actions/github-script@v3
        with:
          script: |
              core.setFailed('This PR is labeled to wait until next beta cycle for release.')

      # ensure that this is not a character change waiting for discussion
      - name: check_discussion_label
        if: >
            contains(github.event.pull_request.labels.*.name, 'discussion needed')
        uses: actions/github-script@v3
        with:
          script: |
              core.setFailed('This change has not yet been discussed.')

      # ensure that this is not a character change waiting for backroom approval
      - name: check_backroom_labels
        if: >
            contains(github.event.pull_request.labels.*.name, 'character change')
            && !contains(github.event.pull_request.labels.*.name, 'backroom approved')
        uses: actions/github-script@v3
        with:
          script: |
              core.setFailed('This character change has not been approved by balance backroom yet.')
      
      - name: all_is_well
        run: echo "This PR is in an appropriately labeled state."