name: Build docs site

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  workflow_dispatch:

jobs:
  build:
    runs-on: self-hosted
    container:
      image: python:3.13-bookworm
      volumes:
        - /srv/docs-makerfloss/html:/output
    steps:
      - name: Install git for actions/checkout
        run: |
          apt-get update -qq
          apt-get install -y --no-install-recommends git rsync

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Python dependencies
        run: pip install --quiet -r requirements.txt

      - name: Regenerate hardware index
        run: python3 scripts/gen_overview.py --category hardware

      - name: Fail on drift in docs/hardware/index.md
        run: |
          if ! git diff --exit-code docs/hardware/index.md; then
            echo
            echo "::error::docs/hardware/index.md is stale."
            echo "Regenerate locally via 'make docs-index' and commit the result."
            exit 1
          fi

      - name: Build site (strict)
        run: mkdocs build --strict

      - name: Publish to /output (main only)
        if: github.ref == 'refs/heads/main' && github.event_name == 'push'
        run: rsync -a --delete site/ /output/