pr-comment-cpe.yml

name: Execute CPE on Pull Request Comment

# See https://docs.github.com/en/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows#issue_comment
on:
  issue_comment:
    types: [created]

jobs:
  cpe-process-comment:
    # Only run on PR comments
    if: github.event.issue.pull_request
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
      workflows: write  # Required to modify workflow files
    steps:
      # First checkout the default branch
      - uses: actions/checkout@v3

      - name: Get PR information
        id: pr_info
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.issue.number }}
        run: |
          # Get PR data using GitHub CLI
          pr_data=$(gh pr view $PR_NUMBER --json headRefName -q .headRefName)
          echo "head_ref=$pr_data" >> $GITHUB_OUTPUT

      # Then fetch and checkout the PR branch
      - uses: actions/checkout@v3
        with:
          ref: ${{ steps.pr_info.outputs.head_ref }}

      - name: Set up Go
        uses: actions/setup-go@v4
        with:
          go-version: '1.23.5'

      - name: Cache Go modules
        uses: actions/cache@v3
        with:
          path: ~/go/pkg/mod
          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-

      - name: Install CPE
        run: go install github.com/spachava753/cpe@latest

      - name: Cache CPE conversation
        uses: actions/cache@v3
        with:
          path: .cpeconvo
          key: cpe-cache-${{ steps.pr_info.outputs.head_ref }}
          restore-keys: |
            cpe-cache-${{ steps.pr_info.outputs.head_ref }}

      - name: Run CPE
        env:
          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
          CPE_CLAUDE_3_5_SONNET_URL: ${{ secrets.CPE_CLAUDE_3_5_SONNET_URL }}
        run: |
          # Check if .cpeconvo file exists and set the continue flag accordingly
          if [ -f ".cpeconvo" ]; then
            echo "Found existing conversation, using -continue flag"
            echo "${{ github.event.comment.body }}" | cpe -continue
          else
            echo "No existing conversation found, starting new conversation"
            echo "${{ github.event.comment.body }}" | cpe
          fi

      - name: Commit and push changes
        run: |
          git config --global user.name 'github-actions[bot]'
          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
          
          # Check if there are any changes to commit
          if [[ -n "$(git status --porcelain)" ]]; then
            git add .
            git commit -m "CPE: Process comment on PR #${{ github.event.issue.number }}"
            git push origin HEAD:${{ steps.pr_info.outputs.head_ref }}
          else
            echo "No changes to commit"
          fi