name: Docs Site Checks

on:
  # No paths filter — the job must always run so the required check
  # reports a status (path-gated workflows leave checks "pending" forever
  # when no matching files change, which blocks merge).
  pull_request:
    branches: [main]

  workflow_dispatch:

permissions:
  contents: read

jobs:
  docs-site-checks:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0 # full history so detect-changes can diff base...head

      # Skip the site build on PRs that touch nothing the docs site is built
      # from (website/, skills/, optional-skills/). The job still reports green
      # (only the steps below are skipped) so the required check never hangs.
      - name: Detect affected areas
        id: changes
        uses: ./.github/actions/detect-changes

      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
        if: steps.changes.outputs.site == 'true'
        with:
          node-version: 22
          cache: npm
          cache-dependency-path: website/package-lock.json

      - name: Install website dependencies
        if: steps.changes.outputs.site == 'true'
        uses: ./.github/actions/retry
        with:
          command: npm ci
          working-directory: website

      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
        if: steps.changes.outputs.site == 'true'
        with:
          python-version: "3.11"

      - name: Install ascii-guard
        if: steps.changes.outputs.site == 'true'
        uses: ./.github/actions/retry
        with:
          command: python -m pip install ascii-guard==2.3.0 pyyaml==6.0.3

      - name: Extract skill metadata for dashboard
        if: steps.changes.outputs.site == 'true'
        run: python3 website/scripts/extract-skills.py

      - name: Regenerate per-skill docs pages + catalogs
        if: steps.changes.outputs.site == 'true'
        run: python3 website/scripts/generate-skill-docs.py

      - name: Lint docs diagrams
        if: steps.changes.outputs.site == 'true'
        run: npm run lint:diagrams
        working-directory: website

      - name: Build Docusaurus
        if: steps.changes.outputs.site == 'true'
        run: npm run build
        working-directory: website