name: ai-slop-gate

# pull_request_target runs this file from the base branch, so a PR cannot
# weaken its own gates. No checkout and no secrets: every check reads only
# the event payload.
on:
  pull_request_target:
    types: [opened, reopened, synchronize, labeled, unlabeled, edited, ready_for_review]

permissions: {}

jobs:
  gate:
    name: ai-slop-gate
    runs-on: ubuntu-latest
    steps:
      - name: Fail while ai-slop:high is present
        if: contains(join(github.event.pull_request.labels.*.name, ','), 'ai-slop:high')
        run: |
          echo "::error::ai-slop:high is present. Resolve the ownership concerns from the AI-slop review (issue linkage, scope, or implementation changes) so the label can be removed."
          exit 1

  linked-issue:
    name: linked-issue-check
    runs-on: ubuntu-latest
    steps:
      - name: Require an issue reference in title or body
        env:
          PR_TITLE: ${{ github.event.pull_request.title }}
          PR_BODY: ${{ github.event.pull_request.body }}
          LABELS: ${{ join(github.event.pull_request.labels.*.name, ',') }}
          DRAFT: ${{ github.event.pull_request.draft }}
          ASSOCIATION: ${{ github.event.pull_request.author_association }}
          AUTHOR_TYPE: ${{ github.event.pull_request.user.type }}
        run: |
          if [ "$DRAFT" = "true" ] || printf '%s' "$LABELS" | grep -q 'no-issue-needed'; then
            echo "Draft or no-issue-needed; linkage check skipped."
            exit 0
          fi
          # OWNER/MEMBER/COLLABORATOR and bots mirror the slop review's
          # skip-roles/skip-bots trust tier.
          if [ "$AUTHOR_TYPE" = "Bot" ] || [ "$ASSOCIATION" = "OWNER" ] || [ "$ASSOCIATION" = "MEMBER" ] || [ "$ASSOCIATION" = "COLLABORATOR" ]; then
            echo "Bot or trusted author ($ASSOCIATION); linkage check skipped."
            exit 0
          fi
          if printf '%s\n%s\n' "$PR_TITLE" "$PR_BODY" | grep -Eq '#[0-9]+|issues/[0-9]+'; then
            echo "Issue reference found."
          else
            echo "::error::No issue reference found in the PR title or body. Link the issue (e.g. \"Fixes #123\"), or ask a maintainer to add the no-issue-needed label if the change is trivial."
            exit 1
          fi