GitHub Action: Cursor Bot (bugbot) PR review status check for branch protection

bugbot-status.yml

# Bugbot Status Check for Cursor Bot Reviews
#
# This GitHub Action integrates cursor[bot] PR reviews with branch protection.
# When cursor[bot] comments "LGTM" on a PR, it sets a success status check.
#
# Setup:
# 1. Add this workflow to .github/workflows/bugbot-status.yml
# 2. Add "bugbot-review" as a required status check in branch protection
# 3. Comment "@cursor please review" on PRs to trigger cursor[bot] review
# 4. When cursor[bot] says "LGTM", the status check passes and PR can merge
#
# Works with: https://cursor.com background agents

name: Bugbot Status Check

on:
  issue_comment:
    types: [created, edited]

jobs:
  check-bugbot-lgtm:
    # Only run on PR comments from cursor[bot]
    if: |
      github.event.issue.pull_request &&
      github.event.comment.user.login == 'cursor[bot]'
    runs-on: ubuntu-latest
    permissions:
      statuses: write
      pull-requests: read
    steps:
      - name: Get PR head SHA
        id: pr
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          PR_DATA=$(gh api repos/${{ github.repository }}/pulls/${{ github.event.issue.number }})
          echo "sha=$(echo $PR_DATA | jq -r .head.sha)" >> $GITHUB_OUTPUT

      - name: Check for LGTM and set status
        env:
          GH_TOKEN: ${{ github.token }}
          COMMENT_BODY: ${{ github.event.comment.body }}
        run: |
          SHA="${{ steps.pr.outputs.sha }}"

          # Check if comment contains LGTM (case insensitive)
          if echo "$COMMENT_BODY" | grep -iq "LGTM"; then
            echo "Bugbot approved! Setting success status..."
            gh api repos/${{ github.repository }}/statuses/$SHA \
              -f state=success \
              -f context="bugbot-review" \
              -f description="Bugbot approved this PR"
          else
            echo "No LGTM found in bugbot comment"
            # Check if this looks like a rejection
            if echo "$COMMENT_BODY" | grep -iqE "(issue|bug|problem|fix|error)"; then
              echo "Bugbot found issues, setting pending status..."
              gh api repos/${{ github.repository }}/statuses/$SHA \
                -f state=pending \
                -f context="bugbot-review" \
                -f description="Bugbot review in progress or found issues"
            fi
          fi