name: Publish Docs
on:
  push:
    branches:
      - master
jobs:
  docs:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Cache SBT
        uses: actions/cache@v2
        with:
          path: |
            ~/.ivy2/cache
            ~/.sbt
          key: ${{ runner.os }}-sbt-${{ hashFiles('**/build.sbt') }}
      - name: Checkout
        uses: actions/checkout@v2
      - name: Setup Scala
        uses: olafurpg/setup-scala@v13
      - name: Build docs
        run: sbt docs/unidoc
      - name: Deploy to GitHub Pages
        uses: JamesIves/github-pages-deploy-action@4.1.5
        with:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          BRANCH: gh-pages
          FOLDER: docs/target/scala-2.13/unidoc