name: PR Request Changes Message
on:
  pull_request_review:
    types: [submitted]

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - name: Check Previous Reviews
        id: result
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const pr = context.payload.pull_request;
            const review = context.payload.review;
            const reviews = await github.rest.pulls.listReviews({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: pr.number,
            });
            const changesRequestedReviews = reviews.data.filter((review) => review.state === 'CHANGES_REQUESTED');
            const firstTimeChangesRequested = changesRequestedReviews.length === 1;
            // Set firstTimeChangesRequested as output of this step
            core.setOutput("firstTimeChangesRequested", firstTimeChangesRequested)

  comment:
    needs: check
    runs-on: ubuntu-latest
    steps:
      - name: Comment on PR
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const pr = context.payload.pull_request;
            // Get output from previous 'check' step
            const firstTimeChangesRequested = needs.check.outputs.firstTimeChangesRequested
            if (firstTimeChangesRequested === 'true') {
              github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: pr.number,
                body: 'Please make sure to **re-request review** after making any changes or answering any questions'
              });
            }