pr_checks.yml

name: Check PR description

on:
  # https://docs.github.com/en/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows#pull_request
  pull_request:
    types:
      - edited
      - labeled
      - opened
      - reopened
      - synchronize
      - unlabeled
    branches:
      - master

jobs:
  trigger-build:
    # https://docs.github.com/en/actions/writing-workflows/choosing-where-your-workflow-runs/choosing-the-runner-for-a-job
    runs-on: ubuntu-latest
    steps:
      - name: Check PR description
        env:
          PR_BODY: ${{ github.event.pull_request.body }}
          KTLO: ${{ contains(github.event.pull_request.labels.*.name, 'ktlo') }}
        run: |
          errors=0

          if [[ "${PR_BODY}" == *"Do not merge"* ]] ; then
            echo "PR description contains 'Do not merge'"
            ((errors += 1))
          fi

          if [[ "${KTLO}" != "true" ]] && [[ "${PR_BODY}" != *"astronomer/issues"* ]] ; then
            echo "PR description does not contain an issue link"
            ((errors += 1))
          fi

          if [[ "${#PR_BODY}" -lt 20 ]] ; then
            echo "PR description is too short"
            ((errors += 1))
          fi

          exit "$errors"