name: Reduce Adoc
on:
  push:
    paths:
      - '**/*-source.adoc'
    branches: ['**']
  workflow_dispatch:

permissions:
  contents: write

jobs:
  reduce:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: '3.2'

      - name: Install asciidoctor-reducer
        run: gem install --no-document asciidoctor-reducer

      - name: Reduce all *-source.adoc files
        shell: bash
        run: |
          set -euo pipefail
          mapfile -d '' -t sources < <(find . -type f -name '*-source.adoc' -print0)
          for src in "${sources[@]}"; do
            out="${src%-source.adoc}.adoc"
            mkdir -p "$(dirname "$out")"
            echo "Reducing $src -> $out"
            asciidoctor-reducer --preserve-conditionals -o "$out" "$src"
          done

      - name: Commit reduced files
        uses: EndBug/add-and-commit@v9