name: Publish Elixir documentation

on:
  push:
    branches: ["master"]

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

permissions:
  contents: write
  pages: write
  id-token: write

# Allow only one concurrent GitHub Pages workflow
concurrency:
  group: "pages"
  cancel-in-progress: true

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        
      - name: Read .tool-versions
        uses: marocchino/tool-versions-action@v1
        id: versions

      - name: Set up Elixir
        uses: erlef/setup-beam@v1
        with:
          elixir-version: ${{steps.versions.outputs.elixir}}
          otp-version: ${{ steps.versions.outputs.erlang}}

      - name: Restore Elixir dependencies cache
        uses: actions/cache@v2
        with:
          path: |
            deps
            _build
            priv/plts
          key: ${{ runner.os }}-mix-v1-${{ hashFiles('**/mix.lock') }}
          restore-keys: ${{ runner.os }}-mix-v1-

      - name: Install Mix dependencies
        run: mix deps.get
        
      - name: Build documentation
        run: mix docs

      - name: Deploy to GitHub Pages
        uses: peaceiris/actions-gh-pages@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./doc
