pr-github-checks.yml

name: PR Github Checks

on:
  pull_request_target:
    branches:
      - "main"
      - "release-*"
    types:
      - opened
      - reopened
      - edited
      - synchronize
      - labeled
      - unlabeled
      - milestoned

  workflow_dispatch:

jobs:
  pr-label-check:
    runs-on: ubuntu-latest
    steps:
      - name: Check for area label
        if: always()
        run: |
          gh api --jq '.labels.[].name' /repos/${{ github.repository }}/pulls/${{ github.event.number }} | \
          grep -q '^area\/' || (echo "area label missing"; exit 1)
        env:
          GH_TOKEN: ${{ github.token }}

      - name: Check for kind label
        if: always()
        run: |
          gh api --jq '.labels.[].name' /repos/${{ github.repository }}/pulls/${{ github.event.number }} | \
          grep -q '^kind\/' || (echo "kind label missing"; exit 1)
        env:
          GH_TOKEN: ${{ github.token }}

      - name: Check if kind label matches pr title prefix
        if: always()
        run: |
          kind_label=$( gh api --jq '.labels.[].name' /repos/${{ github.repository }}/pulls/${{ github.event.number }} | grep '^kind/')
          kind_label_to_pr_title_prefix='{"kind/bug":"fix","kind/feature":"feat","kind/docs":"docs","kind/chore":"chore","kind/flaky-test":"test","kind/missing-test":"test","kind/failing-test":"test","kind/deps":"deps"}'
          prefix=$(echo $kind_label_to_pr_title_prefix | jq -r ".\"$kind_label\"")
          echo "${{ github.event.pull_request.title }}" | grep '^'$prefix || (echo "PR title should start with $prefix"; exit 1)
        env:
          GH_TOKEN: ${{ github.token }}

      - name: Check that there is no do-not-merge label
        if: always()
        run: |
          labels=$(gh api --jq '.labels.[]' /repos/${{ github.repository }}/pulls/${{ github.event.number }} )
          echo "Labels found: $( echo $labels | jq -r '.name' )"

          ! echo "$labels" | jq 'select(.name | startswith("do-not-merge"))' | jq -n "input.name"
        env:
          GH_TOKEN: ${{ github.token }}

  pr-title-check:
    runs-on: ubuntu-latest
    steps:
      - name: Validate title
        uses: amannn/action-semantic-pull-request@0723387faaf9b38adef4775cd42cfd5155ed6017
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          types: |
            deps
            chore
            docs
            feat
            fix
            test
          requireScope: false
          subjectPattern: ^([A-Z].*[^.]|bump .*)$