A GitHub Action that allows you to provide guidance to users on what labels they can/should apply to Pull Requests. Additionally, this Action's outputs allow you to make use of conditional/branching logic based on the presence/absence of labels on the current PR.

    steps:
      - name: Offer PR Label Guidance
        uses: fountainhead/action-pr-label-assistant@v1.0.0
        id: labels
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          id: default
          whitelist: needs-manual-test,preview-instance

      - name: Create/Update Preview Instance
        if: steps.labels.outputs.preview-instance == 'present'

      - name: Terminate Preview Instance
        if: steps.labels.outputs.preview-instance == 'absent'

This Action accepts the following configuration parameters via with:

• token

Required

The GitHub token to use for making API requests. Typically, this would be set to ${{ secrets.GITHUB_TOKEN }}.

• id

  Required

  Some identifier that is unique on a per-repository basis to allow multiple instances of this Action to operate on the same Pull Request.

• whitelist

  Required

  A comma-separated list of slugified, lowercase label names to match against. This whitelist is used to determine which Labels should be presented in the 'guidance' comment, and which keys are outputted by this Action.

  For example, if you had a label named:

  🎉 Let's Party! 🎉

  You may match against it with a whitelist entry of lets-party.

• pre

  Optional

  Some preamble text to display in the 'guidance' comment before the list of available Labels.

• post

  Optional

  Some text to display in the 'guidance' comment after the list of available Labels.

For each entry specified in the whitelist input, an output with the same name will be emiited, having one of two possible values:

• present - The PR this Action ran against does have this Label assigned to it.
• absent - The PR this action ran against does not have this Label assigned to it.