name: Docs

on:
  push:
    branches: [master]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Inject slug/short variables
        uses: rlespinasse/github-slug-action@v3.x

      - name: Install Crystal
        uses: oprypin/install-crystal@v1

      - name: Download source
        uses: actions/checkout@v2
        with:
          persist-credentials: false

      - name: Install dependencies
        run: shards install
        env:
          SHARDS_OPTS: --ignore-crystal-version

      - name: Build docs
        run: |
          sed -i -e 's:<.*>::g' README.md
          crystal docs --project-version="${{ env.GITHUB_REF_SLUG }}" --source-refname="${{ env.GITHUB_SHA_SHORT }}"

      - name: Upload artifacts
        uses: actions/upload-artifact@v2
        with:
          name: docs
          path: docs

  deploy:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Download artifacts
        uses: actions/download-artifact@v2
        with:
          name: docs
          path: docs

      - name: Deploy docs 🚀
        uses: JamesIves/github-pages-deploy-action@3.7.1
        with:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          BRANCH: gh-pages
          FOLDER: docs
          CLEAN: true