Review bot for MELPA (#2 attempt)

review-pr.yml

name: Review PR
on:
  pull_request:
    paths:
      - 'recipes/**'

# Explicitly set workflow permissions to avoid additional permissions being added from 
# the Github UI.
permissions:
  contents: read

env:
  PR_NUMBER: ${{ github.event.number }}

jobs:
  # Check if the PR is the valid PR we can review.
  check:
    runs-on: ubuntu-latest
    outputs:
      status: ${{ steps.export.outputs.status }}
    steps:
    - name: Check valid PR
      id: valid-pr
      continue-on-error: true
      uses: JJ/github-pr-contains-action@releases/v12.1
      with:
        github-token: ${{ github.token }}
        bodyContains: '### Direct link to the package repository'

    - name: Export result
      id: export
      if: steps.valid-pr.outcome == 'success'
      run: |
        echo "status=success" >> "$GITHUB_OUTPUT"

  # Start the review process.
  review:
    needs: [check]
    if: ${{ needs.check.outputs.status == 'success' }}
    runs-on: ubuntu-20.04
    permissions:
      pull-requests: write
    
    steps:
    - uses: purcell/setup-emacs@master
      with:
        version: 29.2

    - uses: actions/checkout@v4
      with:
        repository: riscy/melpazoid
        ref: 719ce96c151765aa5ca9950286027afca0e550c2

    - name: Setup Env
      run: |
        echo "NO_COLOR=true" >> $GITHUB_ENV

    - name: Review package
      continue-on-error: true
      run: MELPA_PR_URL=https://github.com/melpa/melpa/pull/${{ env.PR_NUMBER }} make

    - name: Comment the result to the PR
      uses: mshick/add-pr-comment@v2
      with:
        message-path: ~/pr-output