name: Claude Auto Review

on:
  pull_request:
    types: [ready_for_review, opened]
  workflow_call:
    inputs:
      pr_number:
        description: 'PR number to review'
        required: true
        type: number
      extra_prompt:
        description: 'Additional reviewer instructions appended to the standard review prompt'
        required: false
        type: string
        default: ''
      triggered_by:
        description: 'GitHub username that triggered this review (for audit only)'
        required: false
        type: string
        default: ''
    secrets:
      CLAUDE_CODE_OAUTH_TOKEN:
        required: true
      WINDMILL_EE_PRIVATE_ACCESS:
        required: false

concurrency:
  group: claude-review-${{ inputs.pr_number || github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  check-membership:
    if: github.event_name == 'pull_request'
    uses: ./.github/workflows/check-org-membership.yml
    with:
      commenter: ${{ github.event.pull_request.user.login }}
    secrets:
      access_token: ${{ secrets.ORG_ACCESS_TOKEN }}

  auto-review:
    needs: check-membership
    runs-on: ubuntu-latest
    if: |
      always() &&
      (
        needs.check-membership.result == 'skipped' ||
        (needs.check-membership.result == 'success' && needs.check-membership.outputs.is_member == 'true')
      ) &&
      (
        github.event_name == 'workflow_call' ||
        (github.event.pull_request.draft == false || github.event.pull_request.ready_for_review == true)
      )
    permissions:
      contents: read
      pull-requests: read
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v5
        with:
          fetch-depth: 1

      - name: Check EE access
        id: ee
        env:
          EE_TOKEN: ${{ secrets.WINDMILL_EE_PRIVATE_ACCESS }}
        run: |
          if [ -n "$EE_TOKEN" ]; then
            echo "available=true" >> "$GITHUB_OUTPUT"
            echo "ee_repo_ref=$(cat ./backend/ee-repo-ref.txt)" >> "$GITHUB_OUTPUT"
          else
            echo "available=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Checkout EE repository
        if: steps.ee.outputs.available == 'true'
        uses: actions/checkout@v5
        with:
          repository: windmill-labs/windmill-ee-private
          path: ./windmill-ee-private
          ref: ${{ steps.ee.outputs.ee_repo_ref }}
          token: ${{ secrets.WINDMILL_EE_PRIVATE_ACCESS }}
          fetch-depth: 1

      - name: Substitute EE code
        if: steps.ee.outputs.available == 'true'
        run: ./backend/substitute_ee_code.sh --copy --dir ./windmill-ee-private

      - name: Resolve PR number
        id: resolve
        env:
          GH_TOKEN: ${{ github.token }}
          REPO: ${{ github.repository }}
          INPUT_PR_NUMBER: ${{ inputs.pr_number }}
          EVENT_PR_NUMBER: ${{ github.event.pull_request.number }}
          EVENT_PR_AUTHOR: ${{ github.event.pull_request.user.login }}
        run: |
          if [ -n "$INPUT_PR_NUMBER" ]; then
            PR_NUMBER="$INPUT_PR_NUMBER"
            PR_AUTHOR=$(gh api "repos/$REPO/pulls/$PR_NUMBER" --jq '.user.login')
          else
            PR_NUMBER="$EVENT_PR_NUMBER"
            PR_AUTHOR="$EVENT_PR_AUTHOR"
          fi
          echo "pr_number=$PR_NUMBER" >> "$GITHUB_OUTPUT"
          echo "pr_author=$PR_AUTHOR" >> "$GITHUB_OUTPUT"

      - name: Fetch prior PR discussion
        id: prior
        env:
          GH_TOKEN: ${{ github.token }}
          REPO: ${{ github.repository }}
          PR_NUMBER: ${{ steps.resolve.outputs.pr_number }}
        run: |
          gh api "repos/$REPO/issues/$PR_NUMBER/comments?per_page=100" \
            --jq '[.[] | {user: .user.login, created_at: .created_at, body: (.body | .[:4000])}] | sort_by(.created_at) | .[-20:]' \
            > prior-comments.json || echo "[]" > prior-comments.json
          jq -r '
            if length == 0 then ""
            else
              "## Prior PR discussion (most recent up to 20 comments)\n\nIf you have already reviewed this PR (look for your own earlier comment), focus on what changed since then per the diff and respect any decisions the human made in replies. Do not re-flag findings the human already pushed back on.\n\n" +
              (map("### @\(.user) (\(.created_at))\n\n\(.body)") | join("\n\n---\n\n"))
            end
          ' prior-comments.json > prior-comments.md

      - name: Read review prompt
        id: review-prompt
        env:
          EXTRA_PROMPT: ${{ inputs.extra_prompt }}
        run: |
          {
            echo 'REVIEW_PROMPT<<EOF'
            cat REVIEW.md
            echo ''
            cat .claude/review-prompt.md
            if [ -n "$EXTRA_PROMPT" ]; then
              echo ''
              echo '## Additional reviewer instructions'
              echo ''
              printf '%s\n' "$EXTRA_PROMPT"
            fi
            if [ -s prior-comments.md ]; then
              echo ''
              cat prior-comments.md
            fi
            echo 'EOF'
          } >> "$GITHUB_ENV"

      - name: Automatic PR Review
        uses: anthropics/claude-code-action@v1
        with:
          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
          track_progress: true
          prompt: |
            REPO: ${{ github.repository }}
            PR NUMBER: ${{ steps.resolve.outputs.pr_number }}
            PR AUTHOR: ${{ steps.resolve.outputs.pr_author }}

            ${{ env.REVIEW_PROMPT }}
          claude_args: |
            --allowedTools "mcp__github_inline_comment__create_inline_comment,Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*)"
            --model claude-opus-4-8