name: Prefer TypeScript

on:
  pull_request:
    branches:
      - master

jobs:
  comment:
    name: Comment about preferring TypeScript
    runs-on: ubuntu-latest
    steps:
      - name: Get changed files
        id: changed
        uses: trilom/file-changes-action@master
        with:
          githubToken: ${{ secrets.GITHUB_TOKEN }}
      - name: Determine if a .js or .jsx file was added
        id: check
        run: |
          echo ::set-output name=was_js_file_added::$(jq 'map(endswith(".js") or endswith(".jsx"))' ${HOME}/files_added.json | jq 'reduce .[] as $is_js (false; . or $is_js)')
      - if: steps.check.outputs.was_js_file_added != 'false'
        name: Comment about preferring TypeScript
        uses: unsplash/comment-on-pr@master
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          msg: |
            ## WARNING: Prefer TypeScript
            
            It looks like your PR contains new `.js` or `.jsx` files. As decided in [SIP-36](https://github.com/apache/incubator-superset/issues/9101), all new files should be written in TypeScript. Please convert new JavaScript files to TypeScript and then re-request review.