# This code is part of Qiskit.
#
# (C) Copyright IBM 2017.
#
# This code is licensed under the Apache License, Version 2.0. You may
# obtain a copy of this license in the LICENSE.txt file in the root directory
# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
#
# Any modifications or derivative works of this code must retain this
# copyright notice, and modified files need to carry a notice indicating
# that they have been altered from the originals.

notifications:
  email: false

cache: pip
sudo: false

###############################################################################
# Anchored and aliased definitions.
###############################################################################

# These are used for avoiding repeating code, and due to problems with
# overriding some keys (in particular, "os" and "language: ptyhon") when using
# the standard travis matrix with stages.
#
# This allows re-using different "sets" of configurations in the stages
# matrix, mimicking a hierarchy:
# * stage_generic
#   * stage_linux
#   * stage_osx

stage_generic: &stage_generic
  install:
    # Install step for jobs that require compilation and qa.
    - pip install -U -r requirements.txt
    - pip install -U -r requirements-dev.txt coveralls -c constraints.txt
    - pip install -e .
    - pip install "qiskit-ibmq-provider" -c constraints.txt
  script:
    # Compile the executables and run the tests.
    - python setup.py build_ext --inplace
    - make test_ci
  after_failure:
    - python tools/report_ci_failure.py

stage_linux: &stage_linux
  <<: *stage_generic
  os: linux
  dist: trusty
  language: python
  python: 3.5

stage_osx: &stage_osx
  <<: *stage_generic
  os: osx
  osx_image: xcode9.2
  language: generic
  cache:
    pip: true
    directories:
      - ~/python-interpreters/
  before_install:
    # Travis does not provide support for Python 3 under osx - it needs to be
    # installed manually.
    |
    if [ ${TRAVIS_OS_NAME} = "osx" ]; then
      if [[ ! -d ~/python-interpreters/$PYTHON_VERSION ]]; then
        git clone git://github.com/pyenv/pyenv.git
        cd pyenv/plugins/python-build
        ./install.sh
        cd ../../..
        python-build $PYTHON_VERSION ~/python-interpreters/$PYTHON_VERSION
      fi
      virtualenv --python ~/python-interpreters/$PYTHON_VERSION/bin/python venv
      source venv/bin/activate
    fi


###############################################################################
# Stage-related definitions
###############################################################################

# Define the order of the stages.
stages:
  - lint and pure python test
  - test

# Define the job matrix explicitly, as matrix expansion causes issues when
# using it with stages and some variables/sections cannot be overridden.
jobs:
  include:
    # Wheel builds
    - sudo: required
      services:
        - docker
      env:
        - CIBW_BEFORE_BUILD="pip install -U Cython"
        - CIBW_SKIP="cp27-* cp34-*"
        - TWINE_USERNAME=qiskit
        - CIBW_TEST_COMMAND="python3 {project}/examples/python/stochastic_swap.py"
      if: tag IS present
      script:
        - sudo pip install cibuildwheel==0.10.2
        - sudo pip install -U twine
        - cibuildwheel --output-dir wheelhouse
        - twine upload wheelhouse/*
    - os: osx
      language: generic
      if: tag IS present
      env:
        - CIBW_BEFORE_BUILD="pip install -U Cython"
        - CIBW_SKIP="cp27-* cp34-*"
        - TWINE_USERNAME=qiskit
        - CIBW_TEST_COMMAND="python3 {project}/examples/python/stochastic_swap.py"
      script:
        - sudo pip2 install cibuildwheel==0.10.2
        - sudo pip2 install -U twine
        - cibuildwheel --output-dir wheelhouse
        - twine upload wheelhouse/*

    # "lint and and pure python test" stage
    ###########################################################################
    # Linter and style check (GNU/Linux, Python 3.5)
    - stage: lint and pure python test
      name: Python Style and Linter
      <<: *stage_linux
      script: make style && make lint

    # Run the tests against without compilation (GNU/Linux, Python 3.5)
    - stage: lint and pure python test
      name: Python 3.5 Tests Linux
      <<: *stage_linux

    # "test" stage
    ###########################################################################

    # GNU/Linux, Python 3.6
    - stage: test
      name: Python 3.6 Tests and Coverage Linux
      <<: *stage_linux
      python: 3.6
      env:
        - PYTHON="coverage run --source qiskit --parallel-mode"
      after_success:
        - coverage combine || true
        - coveralls || true
        - coverage xml || true
        - pip install diff-cover || true
        - diff-cover --compare-branch master coverage.xml || true

    # GNU/Linux, Python 3.7
    - stage: test
      name: Python 3.7 Tests Linux
      <<: *stage_linux
      # Compiling Python 3.7 requires an Ubuntu Xenial distribution
      # and sudo set to true
      # Fix when this is solved:
      # https://github.com/travis-ci/travis-ci/issues/9815
      dist: xenial
      python: 3.7
      sudo: true

    # OSX, Python 3.5.6 (via pyenv)
    - stage: test
      <<: *stage_osx
      name: Python 3.5 Tests OSX
      env:
        - MPLBACKEND=ps
        - PYTHON_VERSION=3.5.6

    # OSX, Python 3.6.5 (via pyenv)
    - stage: test
      name: Python 3.6 Tests OSX
      <<: *stage_osx
      env:
        - MPLBACKEND=ps
        - PYTHON_VERSION=3.6.5

    # OSX, Python 3.7.2 (via pyenv)
    - stage: test
      name: Python 3.7 Tests OSX
      <<: *stage_osx
      env:
        - MPLBACKEND=ps
        - PYTHON_VERSION=3.7.2

    # Randomized testing
    - stage: test
      name: Randomized tests
      <<: *stage_linux
      cache:
        pip: true
        directories:
        - .hypothesis
      script:
      - python setup.py build_ext --inplace
      - pip install "qiskit-aer"
      - make test_randomized

    - stage: test
      name: Benchmarks
      <<: *stage_linux
      script:
      - python setup.py build_ext --inplace
      - pip install "qiskit-aer"
      - pip install "asv"
      - git clone "https://www.github.com/Qiskit/qiskit" meta-qiskit
      - >-
        sed -i
        -e 's/"repo": "https:\/\/github.com\/Qiskit\/qiskit-terra.git",/"repo": "..",/'
        meta-qiskit/asv.conf.json
      - cat meta-qiskit/asv.conf.json
      - echo $TRAVIS_BRANCH
      - echo $TRAVIS_PULL_REQUEST_BRANCH
      - asv --config meta-qiskit/asv.conf.json machine --machine travis-ci
      - travis_wait 45 asv --config meta-qiskit/asv.conf.json continuous --interleave-processes --machine travis-ci --no-only-changed --python 3.5 --bench '^(qft|transpiler_benchmarks|state_tomography)\.' $TRAVIS_BRANCH HEAD

matrix:
  fast_finish: true
  allow_failures:
  - name: Randomized tests
  - name: Benchmarks