name: Docs

on:
  push:
    branches:
      - master

defaults:
  run:
    # This otherwise gets run under dash which does not support brace expansion
    shell: bash

jobs:
  docs:
    name: Build and test all components
    runs-on: ubuntu-18.04
    steps:
      - uses: actions/checkout@v3
      # Needed for git-describe to do anything useful
      - name: Fetch all git history
        run: git fetch --force --prune --tags --unshallow

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libasound2-dev libgl-dev libjack-dev libxcb1-dev libxcb-icccm4-dev libxcursor-dev libxkbcommon-dev libxcb-shape0-dev libxcb-xfixes0-dev

      - uses: actions/cache@v3
        # FIXME: Caching `target/` causes the Windows runner to blow up after some time
        if: startsWith(matrix.os, 'windows')
        with:
          path: |
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
          key: ${{ matrix.name }}-${{ matrix.cross-target }}
      - uses: actions/cache@v3
        if: "!startsWith(matrix.os, 'windows')"
        with:
          path: |
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
            target/
          key: ${{ matrix.name }}-${{ matrix.cross-target }}

      - name: Set up Rust toolchain
        # Nightly is needed to document the SIMD feature and for the
        # `doc_auto_cfg` feature
        uses: dtolnay/rust-toolchain@nightly
      - name: Generate documentation for all targets
        # Don't use --all-features here as that will enable a whole bunch of
        # conflicting iced features. We also don't want to use `--workspace`
        # here because that would also document our plugins and binary crates.
        run: >-
          cargo doc --features docs,simd,standalone,zstd --no-deps
            -p nih_plug
            -p nih_plug_derive
            -p nih_plug_egui
            -p nih_plug_iced
            -p nih_plug_vizia
            -p nih_plug_xtask

      - name: Add a redirect index page
        run: |
          cat > target/doc/index.html <<EOF
          <meta charset="utf-8">
          <meta http-equiv="refresh" content="0; url=nih_plug">
          EOF
      - name: Deploy to GitHub Pages
        uses: JamesIves/github-pages-deploy-action@v4.3.0
        with:
          branch: gh-pages
          folder: target/doc

          # Having the gh-pages branch on this repository adds a whole bunch of
          # noise to the GitHub feed if you follow this repo
          repository-name: robbert-vdh/nih-plug-docs
          ssh-key: ${{ secrets.DOCS_DEPLOY_KEY }}