name: 06.1. Final Portal Deploy
on:
  push:
    branches:
      - master
  workflow_dispatch: {}

# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
permissions:
  contents: write
  pages: write
  id-token: write

# Allow only one concurrent deployment
concurrency:
  group: "pages-stable"
  cancel-in-progress: false

jobs:
  build:
    name: Build Dual Versions
    runs-on: ubuntu-latest
    steps:
      - name: Checkout master
        uses: actions/checkout@v6
        with:
          submodules: true
          # Full history so mkdocs-git-revision-date-localized can compute the
          # real per-page "last updated" date (shallow clone => all build-date).
          fetch-depth: 0

      - name: Setup Python
        uses: actions/setup-python@v6
        with:
          python-version: '3.11'
          cache: 'pip'

      - name: Install dependencies
        run: |
          pip install mkdocs-material mkdocs-redirects mkdocs-minify-plugin pymdown-extensions
          pip install -r requirements.txt

      # 1. Build V1 to temporary staging area
      - name: Build V1 Edition (Staging)
        run: mkdocs build -f mkdocs.yml -d site_v1/

      # 2. Build V2 Elite Edition (Staging)
      - name: Build V2 Elite Edition (Staging)
        run: mkdocs build -f v2-mkdocs.yml -d site_v2/

      # 3. Assemble Final Site (V2 at Root with V1 Fallback, V1 Archive at /v1/)
      - name: Assemble Final Site
        run: |
          mkdir -p site/

          # Safety check: V2 must have a valid index.html and at least 50 pages
          V2_PAGE_COUNT=$(find site_v2/ -name "*.html" | wc -l)
          if [ "$V2_PAGE_COUNT" -lt 50 ] || [ ! -f site_v2/index.html ]; then
            echo "❌ V2 build looks broken (only $V2_PAGE_COUNT HTML pages). Deploying V1 only to protect the site."
            cp -r site_v1/* site/
            mkdir -p site/v1/
            cp -r site_v1/* site/v1/
            rm -rf site_v1/ site_v2/
            exit 0
          fi

          echo "✅ V2 build OK ($V2_PAGE_COUNT pages). Assembling dual-version site."
          # Copy V1 to root as fallback for any pages not present in V2
          cp -r site_v1/* site/
          # Overwrite root with V2 Elite Portal (matching pages will be V2 versions)
          cp -r site_v2/* site/
          # Deploy full V1 Archive to subdirectory /v1/
          mkdir -p site/v1/
          cp -r site_v1/* site/v1/
          rm -rf site_v1/ site_v2/

      - name: Setup Pages
        uses: actions/configure-pages@v6

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v5
        with:
          path: './site'

  deploy:
    name: Deploy to GitHub Pages
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v5