unneeded_recipe_updates.yml

name: Check for unneeded recipe updates

on:
  pull_request_target:
    paths:
      - 'docs/recipes/**/*.md'

jobs:
  check_updates:
    runs-on: ubuntu-latest
    
    steps:
      # Checkout the base repository (not the fork) to avoid running untrusted code
      - name: Checkout base repository
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.base.ref }}
          
      - name: Add warning comment to pull request
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const prNumber = context.payload.pull_request?.number;
            if (!prNumber) {
              throw new Error('No pull request found.');
            }
            
            const output = `
            While we appreciate that you're attempting to improve the docs, please be aware that all files in the \`/docs/recipes\` directory are auto-generated by the [markdown-generator](https://github.com/openrewrite/rewrite-recipe-markdown-generator).

            Please make changes to the recipes themselves rather than to these files. When the next release happens, these files will be updated accordingly.
            `;

            await github.rest.issues.createComment({
              issue_number: prNumber,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: output
            });