version: 2
jobs:
  build:
    docker:
      - image: circleci/python:3.6.5-stretch-browsers

    working_directory: ~/repo

    steps:
      - checkout

      - run:
          name: dependencies
          command: |

            # We need at least g++-8, but stretch comes with g++-6
            # Set up the Debian testing repo, and then install g++ from there...
            sudo bash -c "echo \"deb http://ftp.us.debian.org/debian testing main contrib non-free\" >> /etc/apt/sources.list"
            sudo apt-get update
            sudo apt-get install node-less cmake build-essential clang-format-6.0 flake8 uglifyjs
            sudo apt-get install -t testing g++-8
            sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6
            sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 80 --slave /usr/bin/g++ g++ /usr/bin/g++-8
            sudo update-alternatives --set gcc /usr/bin/gcc-8

            sudo pip install pytest-xdist selenium

            # Get recent version of Firefox and geckodriver
            wget -O firefox.tar.bz2 https://download.mozilla.org/\?product\=firefox-nightly-latest-ssl\&os\=linux64\&lang\=en-US
            tar jxf firefox.tar.bz2

            wget https://github.com/mozilla/geckodriver/releases/download/v0.20.1/geckodriver-v0.20.1-linux64.tar.gz
            tar zxf geckodriver-v0.20.1-linux64.tar.gz -C firefox

            # This Debian is so old, it doesn't know about wasm as a mime type, which then
            # causes Firefox to complain when loading it.  Let's just add the new mime type.
            sudo bash -c "echo 'application/wasm wasm' >> /etc/mime.types"

      - run:
          name: lint
          command: |
            make lint

      - restore_cache:
          keys:
          - v1-emsdk-{{ checksum "emsdk/Makefile" }}
          # fallback to using the latest cache if no exact match is found
          - v1-emsdk-

      - run:
          name: build
          no_output_timeout: 1200
          command: |
            make

      - save_cache:
          paths:
            - ./emsdk/emsdk
          key: v1-emsdk-{{ checksum "emsdk/Makefile" }}

      - run:
          name: test
          command: |
            export PATH=$PWD/firefox:$PATH
            make test

  deploy:
    machine:
      enabled: true
    steps:
      - run:
          name: Deploy to Github Pages
          command: |
            .circleci/deploy.sh

workflows:
  version: 2
  build-and-deploy:
    jobs:
      - build
      - deploy:
          requires:
            - build
          filters:
            branches:
              only: master