# Use Python 3.5 for our tooling
language: python
python:
- "3.8"

# Our tests are run with Emacs in Docker
services:
- docker

matrix:
  # Don’t wait for jobs that are allowed to fail
  fast_finish: true
  # Allow master branch to fail
  allow_failures:
  - env: JOB="emacs" EMACS_VERSION="master"

cache:
- pip

env:
  matrix:
  # Run our tests on all these Emacs versions
  - JOB="emacs" EMACS_VERSION="master"
  - JOB="emacs" EMACS_VERSION="27.1"
  - JOB="emacs" EMACS_VERSION="26.3"
  - JOB="emacs" EMACS_VERSION="25.3"
  # A special job to build the manual
  - JOB="build-manual"
  # And another special job to lint our Python code
  - JOB="lint-python"

before_install:
- if [[ $JOB == emacs ]]; then docker pull flycheck/emacs-cask:$EMACS_VERSION; fi

install:
- |
  case $JOB in
    emacs)
      # We use separate Cask files for Emacs 25
      if [[ $EMACS_VERSION == 25.* ]]; then
        cp Cask.25 Cask
      fi
      # Install Emacs modes for our tests
      docker run --volume "$TRAVIS_BUILD_DIR":/flycheck \
                 --workdir /flycheck \
                 flycheck/emacs-cask:$EMACS_VERSION \
                 /bin/bash -c "make init";;
    build-manual)
      # Install requirements of documentation
      pip install -r doc/requirements.txt;;
    lint-python)
      # Install requirements for linting
      pip install -r maint/requirements.txt;;
  esac

script:
- |
  # Abort if any command fails
  set -e
  case $JOB in
    emacs)
      # Check formatting
      docker run --volume "$TRAVIS_BUILD_DIR":/flycheck \
                 --workdir /flycheck \
                 flycheck/emacs-cask:$EMACS_VERSION \
                 /bin/bash -c "make check"
      # Compile and run unit tests.
      docker run --volume "$TRAVIS_BUILD_DIR":/flycheck \
                 --workdir /flycheck \
                 flycheck/emacs-cask:$EMACS_VERSION \
                 /bin/bash -c "make compile && make unit && make specs"
      # If the unit tests succeed, fetch the all-tools container
      # and run the integration tests
      docker build --build-arg EMACS_VERSION=$EMACS_VERSION \
                      --tag tools-and-emacs:$EMACS_VERSION \
                      --file=.travis/tools-and-emacs .
      docker run --volume "$TRAVIS_BUILD_DIR":/flycheck \
                 --workdir /flycheck \
                 tools-and-emacs:$EMACS_VERSION \
                 /bin/bash -c "check-tools && make integ" ;;

    build-manual)
    # Build and deploy the manual
      make -C doc SPHINXOPTS=-n html;;

    lint-python)
    # Lint our Python code
      make -C maint check;;

  esac

notifications:
  webhooks:
    urls:
      - https://webhooks.gitter.im/e/efdc5fd9433efa7c6b80
    on_success: change