name: Publish docs

on:
  push:
    branches:
      - current
      - next

jobs:
  docs:
    name: Publish docs
    runs-on: ubuntu-latest

    steps:
      - name: Checkout sources
        uses: actions/checkout@v2

      - name: Install toolchain
        id: tc
        uses: actions-rs/toolchain@v1
        with:
          toolchain: nightly
          profile: minimal
          override: true

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libopus-dev

      - name: Setup cache
        uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target/debug
          key: ${{ runner.os }}-gh-pages-${{ steps.tc.outputs.rustc_hash }}-${{ hashFiles('**/Cargo.toml') }}

      - name: Build docs
        env:
          RUSTDOCFLAGS: -D broken_intra_doc_links
        run: |
          cargo doc --no-deps --all-features

      - name: Prepare docs
        shell: bash -e -O extglob {0}
        run: |
          DIR=${GITHUB_REF/refs\/+(heads|tags)\//}
          mkdir -p ./docs/$DIR
          touch ./docs/.nojekyll
          echo '<meta http-equiv="refresh" content="0;url=songbird/index.html">' > ./docs/$DIR/index.html
          mv ./target/doc/* ./docs/$DIR/

      - name: Deploy docs
        uses: peaceiris/actions-gh-pages@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_branch: gh-pages
          publish_dir: ./docs
          allow_empty_commit: false
          keep_files: true