# Tagging a commit with [circle front] will build the front page and perform test-doc.
# Tagging a commit with [circle full] will build everything.
version: 2
jobs:
    build_docs:
      docker:
        - image: circleci/python:3.7-stretch
      steps:
        - checkout
        - run:
            name: Set BASH_ENV
            command: |
              echo "set -e" >> $BASH_ENV
              echo "export DISPLAY=:99" >> $BASH_ENV
              echo "export OPENBLAS_NUM_THREADS=4" >> $BASH_ENV
              echo "BASH_ENV:"
              cat $BASH_ENV

        - run:
            name: Merge with upstream
            command: |
              echo $(git log -1 --pretty=%B) | tee gitlog.txt
              echo ${CI_PULL_REQUEST//*pull\//} | tee merge.txt
              if [[ $(cat merge.txt) != "" ]]; then
                echo "Merging $(cat merge.txt)";
                git remote add upstream git://github.com/PythonOT/POT.git;
                git pull --ff-only upstream "refs/pull/$(cat merge.txt)/merge";
                git fetch upstream master;
              fi

        # Load our data
        - restore_cache:
            keys:
              - data-cache-0
              - pip-cache

        - run:
            name: Spin up Xvfb
            command: |
              /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -screen 0 1400x900x24 -ac +extension GLX +render -noreset;

        # https://github.com/ContinuumIO/anaconda-issues/issues/9190#issuecomment-386508136
        # https://github.com/golemfactory/golem/issues/1019
        - run:
            name: Fix libgcc_s.so.1 pthread_cancel bug
            command: |
              sudo apt-get install qt5-default

        - run:
            name: Get Python running
            command: |
              python -m pip install --user --upgrade --progress-bar off pip
              python -m pip install --user --upgrade --progress-bar off -r requirements.txt
              python -m pip install --user --upgrade --progress-bar off -r docs/requirements.txt
              python -m pip install --user --upgrade --progress-bar off ipython "https://api.github.com/repos/sphinx-gallery/sphinx-gallery/zipball/master" memory_profiler
              python -m pip install --user -e .

        - save_cache:
            key: pip-cache
            paths:
              - ~/.cache/pip

        # Look at what we have and fail early if there is some library conflict
        - run:
            name: Check installation
            command: |
               which python
               python -c "import ot"

        # Build docs
        - run:
            name: make html
            command: |
              cd docs;
              make html;

        # Save the outputs
        - store_artifacts:
            path: docs/build/html/
            destination: dev
        - persist_to_workspace:
            root: docs/build
            paths:
              - html

    deploy:
      docker:
        - image: circleci/python:3.6-jessie
      steps:
        - attach_workspace:
            at: /tmp/build
        - run:
            name: Fetch docs
            command: |
              set -e
              mkdir -p ~/.ssh
              echo -e "Host *\nStrictHostKeyChecking no" > ~/.ssh/config
              chmod og= ~/.ssh/config
              if [ ! -d ~/PythonOT.github.io ]; then
                git clone git@github.com:/PythonOT/PythonOT.github.io.git ~/PythonOT.github.io --depth=1
              fi
        - run:
            name: Deploy docs
            command: |
              set -e;
              if [ "${CIRCLE_BRANCH}" == "master" ]; then
                git config --global user.email "circle@PythonOT.com";
                git config --global user.name "Circle CI";
                cd ~/PythonOT.github.io;
                git checkout master
                git remote -v
                git fetch origin
                git reset --hard origin/master
                git clean -xdf
                echo "Deploying dev docs for ${CIRCLE_BRANCH}.";
                cp -a /tmp/build/html/* .;
                touch .nojekyll;
                git add -A;
                git commit -m "CircleCI update of dev docs (${CIRCLE_BUILD_NUM}).";
                git push origin master;
              else
                echo "No deployment (build: ${CIRCLE_BRANCH}).";
              fi

workflows:
  version: 2

  default:
    jobs:
      - build_docs
      - deploy:
          requires:
            - build_docs
          filters:
            branches:
              only:
                - master