name: Auto-Approve Docs

on:
  pull_request:
    types: [opened, synchronize, labeled]
    paths:
      - 'docs/**'
      - '*.md'
      - 'README.*'

permissions:
  contents: read
  pull-requests: write

jobs:
  auto-approve:
    runs-on: ubuntu-latest
    if: |
      contains(github.event.pull_request.labels.*.name, 'docs-only') &&
      !contains(github.event.pull_request.labels.*.name, 'breaking-change') &&
      !contains(github.event.pull_request.labels.*.name, 'security') &&
      !contains(github.event.pull_request.labels.*.name, 'do-not-merge')

    steps:
      - name: Approve PR
        uses: hmarr/auto-approve-action@v3
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Add auto-merge label
        run: gh pr edit ${{ github.event.pull_request.number }} --add-label "auto-merge"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Comment on PR
        run: |
          gh pr comment ${{ github.event.pull_request.number }} --body "🤖 **Auto-Approved (Docs-Only)**

          This PR contains only documentation changes and has been automatically approved.

          **Tier**: 1 (Docs-Only)
          **Policy**: AUTO_MERGE_POLICY.md#tier-1-documentation
          **Soak Time**: 0 minutes

          Auto-merge will proceed once all checks pass."
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}