name: CI

on: [push, pull_request]

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
  cancel-in-progress: true

jobs:
  ci:
    strategy:
      # Allows for matrix sub-jobs to fail without canceling the rest
      fail-fast: false

      # MATRIX:
      # =======
      # Required parameters:
      #  os                  the os to run on
      #  python-version      the python version to use
      #  backend             the backend to use
      #  env                 any additional env variables. Set to '{}' for none
      # Optional parameters:
      #  allowed_failure     whether the job is allowed to fail
      #  extra_hash          extra hash str to differentiate from other caches with similar name (must always start with '-')
      matrix:
        # Tests [amd64]
        #
        # FIXME: 'cpp' tests seems to fail due to compilation errors (numpy_pythran_unit)
        # in all python versions and test failures (builtin_float) in 3.5<
        os: [ubuntu-18.04]
        backend: [c, cpp]
        python-version: ["2.7", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12-dev"]
        env: [{}]

        include:
          # Temporary - Allow failure on Python 3.12-dev jobs until they are in beta (feature frozen)
          - python-version: 3.12-dev
            allowed_failure: true

          # Ubuntu sub-jobs:
          # ================
          # GCC 11
          - os: ubuntu-18.04
            python-version: 3.9
            backend: c
            env: { GCC_VERSION: 11 }
            extra_hash: "-gcc11"
          - os: ubuntu-18.04
            python-version: 3.9
            backend: cpp
            env: { GCC_VERSION: 11 }
            extra_hash: "-gcc11"
          # compile all modules
          - os: ubuntu-18.04
            python-version: 2.7
            backend: c
            env: { CYTHON_COMPILE_ALL: 1 }
            extra_hash: "-all"
          - os: ubuntu-18.04
            python-version: 2.7
            backend: cpp
            env: { CYTHON_COMPILE_ALL: 1 }
            extra_hash: "-all"
          - os: ubuntu-18.04
            python-version: 3.9
            backend: c
            env: { CYTHON_COMPILE_ALL: 1 }
            extra_hash: "-all"
          - os: ubuntu-18.04
            python-version: 3.9
            backend: cpp
            env: { CYTHON_COMPILE_ALL: 1 }
            extra_hash: "-all"
          # Linting
          - os: ubuntu-18.04
            python-version: 3.7
            backend: "c,cpp"
            env: { TEST_CODE_STYLE: 1, NO_CYTHON_COMPILE: 1 }
            extra_hash: "-codestyle"
          # Stackless
          - os: ubuntu-18.04
            python-version: 2.7
            backend: c
            env: { STACKLESS: true, PY: 2 }
            extra_hash: "-stackless"
          - os: ubuntu-18.04
            python-version: 3.6
            backend: c
            env: { STACKLESS: true, PY: 3 }
            extra_hash: "-stackless"
          # Pypy
          - os: ubuntu-18.04
            python-version: pypy-2.7
            backend: c
            env: { NO_CYTHON_COMPILE: 1 }
            allowed_failure: true
            extra_hash: "-allowed_failures"
          - os: ubuntu-18.04
            python-version: pypy-3.7
            backend: c
            env: { NO_CYTHON_COMPILE: 1 }
            allowed_failure: true
            extra_hash: "-allowed_failures"
          # Coverage - Disabled due to taking too long to run
          # - os: ubuntu-18.04
          #   python-version: 3.7
          #   backend: "c,cpp"
          #   env: { COVERAGE: 1 }
          #   extra_hash: '-coverage'

          # MacOS sub-jobs
          # ==============
          # (C-only builds are used to create wheels)
          - os: macos-11
            python-version: 2.7
            backend: c
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }
          - os: macos-11
            python-version: 2.7
            backend: cpp
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }
          - os: macos-11
            python-version: 3.5
            backend: c
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }
          - os: macos-11
            python-version: 3.6
            backend: c
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }
          - os: macos-11
            python-version: 3.7
            backend: c
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }
          - os: macos-11
            python-version: 3.8
            backend: c
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }
          - os: macos-11
            python-version: 3.9
            backend: c
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }
          - os: macos-11
            python-version: 3.9
            backend: cpp
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }
          - os: macos-11
            python-version: "3.10"
            backend: c
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }
          - os: macos-11
            python-version: "3.10"
            backend: cpp
            env: { MACOSX_DEPLOYMENT_TARGET: 10.14 }

    # This defaults to 360 minutes (6h) which is way too long and if a test gets stuck, it can block other pipelines.
    # From testing, the runs tend to take ~20/~30 minutes, so a limit of 40 minutes should be enough. This can always be
    # changed in the future if needed.
    timeout-minutes: 40
    runs-on: ${{ matrix.os }}

    env:
      BACKEND: ${{ matrix.backend }}
      OS_NAME: ${{ matrix.os }}
      PYTHON_VERSION: ${{ matrix.python-version }}
      GCC_VERSION: 8
      USE_CCACHE: 1
      CCACHE_SLOPPINESS: "pch_defines,time_macros"
      CCACHE_COMPRESS: 1
      CCACHE_MAXSIZE: "200M"

    steps:
      - name: Checkout repo
        uses: actions/checkout@v2
        with:
          fetch-depth: 1

      - name: Setup python
        uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python-version }}

      - name: Cache [ccache]
        uses: pat-s/always-upload-cache@v2.1.3
        if: startsWith(runner.os, 'Linux')
        with:
          path: ~/.ccache
          key: ${{ runner.os }}-ccache${{ matrix.extra_hash }}-${{ matrix.python-version }}-${{ matrix.backend == 'c' || matrix.backend == 'c,cpp' }}-${{ contains(matrix.backend, 'cpp') }}-${{ hashFiles('**/test-requirements*.txt', '**/ci.yml', '**/ci-run.sh') }}

      - name: Run CI
        continue-on-error: ${{ matrix.allowed_failure || false }}
        env: ${{ matrix.env }}
        run: bash ./Tools/ci-run.sh

      - name: Upload HTML docs
        uses: actions/upload-artifact@v2
        with:
          name: htmldocs
          path: docs/build/html
          if-no-files-found: ignore

      - name: Upload wheels
        uses: actions/upload-artifact@v2
        with:
          name: wheels-${{ runner.os }}
          path: dist/*.whl
          if-no-files-found: ignore