name: CI

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2.3.4

    - name: Install Nix
      uses: cachix/install-nix-action@v13
      with:
        nix_path: nixpkgs=channel:nixos-unstable

    - name: Tangle
      run: nix-shell --run 'make tangle'

      ## TODO: do this in a matrix
    - name: gcc → Build external dependencies
      run: nix-shell --run 'make extern CONFIG=gcc'

    - name: gcc → Build lib
      run: nix-shell --run 'make lib CONFIG=gcc'

    - name: gcc → Build bench
      run: nix-shell --run 'make bench CONFIG=gcc'

    - name: clang → Build external dependencies
      run: nix-shell --arg with-clang true --run 'make extern CONFIG=clang'

    - name: clang → Build lib
      run: nix-shell --arg with-clang true --run 'make lib CONFIG=clang'

    - name: clang → Build bench
      run: nix-shell --arg with-clang true --run 'make bench CONFIG=clang'

  documentation:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2.3.4
    - name: Install Nix
      uses: cachix/install-nix-action@v13
      with:
        nix_path: nixpkgs=channel:nixos-unstable

    - name: Install dependencies
      run: |
        cd docs
        nix-shell --run 'emacs --version'
        nix-shell --run 'python --version'
        nix-shell --run 'sphinx-build --version'

    - name: doxygen
      run: |
        cd docs
        nix-shell --run 'make doxygen'

    - name: sphinx
      run: |
        cd docs
        nix-shell --run 'make sphinx'

    - name: nojekyll
      run: |
        cd docs/build
        touch .nojekyll

    - name: Deploy
      uses: JamesIves/github-pages-deploy-action@4.1.0
      with:
         branch: gh-pages
         folder: ./docs/build