Automatically labelling PR depending on the PR's status

Step 1. Create a .github/workflows/pr-triage-dummy.yml file in you repository.

Github actions can not access secrets in pull_request_review event, so we need to create a dryrun workflow to triggers a workflow_run. Then we can process the event in Step 2.

@see How to use secret in pull_request_review similar to pull_request_target?

name: PR Triage Dummy
on:
  pull_request_review:
    types: [submitted, dismissed]
jobs:
  dummy:
    runs-on: ubuntu-latest
    steps:
      - run: echo "this is a dummy workflow that triggers a workflow_run; it's necessary because otherwise the repo secrets will not be in scope for externally forked pull requests"

Step 2. Create a .github/workflows/pr-triage.yml file in you repository.

name: PR Triage
on:
  pull_request_target:
    types: [opened, closed, edited, reopened, synchronize, ready_for_review]
  workflow_run:
    workflows: ['PR Triage Dummy'] # the workflow in step 1
    types: [requested]
jobs:
  triage:
    runs-on: ubuntu-latest
    steps:
      - uses: wow-actions/pr-triage@v1
        with:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN  }}
          WORKFLOW_ID: ${{ github.event.workflow_run.id }}

Only watching the most recent commit 👀:

• Do nothing when the PR's title starts from WIP, [WIP] or WIP:.
• Add the PR: unreviewed label when the PR does not have any reviews.
• Add the PR: reviewed-changes-requested label when the PR has reviewed and got Change request event.
• Add the PR: review-approved label when the PR has reviewed and got Approve event.

The scripts and documentation in this project are released under the MIT License