name: Docs

on:
  push:
    branches:
      - master
    tags:
      # Run when pushing version tags, since otherwise it's impossible to
      # restart a successful build after pushing a tag
      - '*.*.*'
  pull_request:
    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@v2
      # 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 libgl-dev libxcb1-dev libxcb-icccm4-dev libxcursor-dev libxkbcommon-dev libxcb-shape0-dev libxcb-xfixes0-dev

      - uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/bin/
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
            target/
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

      - name: Set up Rust toolchain
        uses: actions-rs/toolchain@v1
        with:
          # Nightly is needed to document the SIMD feature and for the
          # `doc_auto_cfg` feature
          toolchain: nightly
          profile: minimal
          default: true
      - name: Build all targets
        uses: actions-rs/cargo@v1
        with:
          command: doc
          # 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.
          args: >-
            --features docs,simd --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