version: 2.1

orbs:
  codecov: codecov/codecov@1.1.1

notify:
  webhooks:
    # Unfortunately Gitter messages are too verbose (one five-line message per
    # each job in the build matrix) and thus not wanted
    #- url: https://webhooks.gitter.im/e/cfbadbd34d28708a57c6

executors:
  ubuntu-16_04:
    docker:
    - image: ubuntu:xenial-20201014
  emscripten:
    docker:
    # 1.39.0 is the oldest on Docker. Anything before 1.39.2 is useless as emar
    # randomly asserts: https://github.com/emscripten-core/emscripten/pull/9742
    # Then, anything before 1.39.6 is useless as well because emar has a
    # filesystem race and randomly complains that a file doesn't exist:
    # https://github.com/mosra/magnum/issues/413,
    # https://github.com/emscripten-core/emscripten/pull/10161
    - image: emscripten/emsdk:1.39.6-upstream

commands:
  install-base:
    parameters:
      extra:
        type: string
        default: ""
    steps:
    - run:
        name: Update apt and install base packages
        # Git is needed always for cloning Corrade
        command: |
          apt update
          if [[ "$CMAKE_CXX_FLAGS" == *"--coverage"* ]]; then export LCOV_PACKAGES="lcov curl"; fi
          apt install -y git ninja-build $LCOV_PACKAGES << parameters.extra >>

  install-gcc-4_8:
    steps:
    - run:
        name: Install GCC 4.8
        # For some reason, CMake needs a working C compiler, so provice CC as
        # well for the case when default gcc isn't installed.
        command: |
          apt install -y g++-4.8
          echo 'export CC=gcc-4.8' >> $BASH_ENV
          echo 'export CXX=g++-4.8' >> $BASH_ENV

  install-clang-3_8:
    steps:
    - run:
        name: Install Clang 3.8
        # https://askubuntu.com/questions/787383/how-to-install-llvm-3-9
        # because the `deb` commands from https://apt.llvm.org don't work
        #
        # The software-properties-common need to be installed in order to have
        # apt-add-repository. Sigh, adding a repository should be a core
        # feature ffs!
        #
        # The apt-transport-https needs to be installed because
        #  E: The method driver /usr/lib/apt/methods/https could not be found.
        #  N: Is the package apt-transport-https installed?
        #
        # For some reason, CMake needs a working C compiler, so provice CC as
        # well for the case when default gcc isn't installed.
        #
        # The llvm-symbolizer link needs to be set in order to have usable
        # symbols in the output. This affects suppressions as well, meaning
        # they won't work if the symbols are not resolvable. It's not enough to
        # just `export ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer-3.8`
        # because it then complains that
        #
        #   External symbolizer path is set to '/usr/bin/llvm-symbolizer-3.8'
        #   which isn't a known symbolizer. Please set the path to the
        #   llvm-symbolizer binary or other known tool.
        #
        # Probably because because it detects tool type based on the filename?
        # Ugh.
        command: |
          apt install -y software-properties-common apt-transport-https wget
          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
          apt-add-repository "deb https://apt.llvm.org/xenial/ llvm-toolchain-xenial-3.9 main"
          apt update
          apt install -y clang-3.8
          echo 'export CC=clang-3.8' >> $BASH_ENV
          echo 'export CXX=clang++-3.8' >> $BASH_ENV
          ln -s /usr/bin/llvm-symbolizer{-3.8,}

  install-cmake-3_4:
    steps:
    - run:
        name: Install CMake 3.4
        command: |
          apt install -y wget
          mkdir -p $HOME/cmake && cd $HOME/cmake
          wget -nc --no-check-certificate https://cmake.org/files/v3.4/cmake-3.4.3-Linux-x86_64.tar.gz
          tar --strip-components=1 -xzf cmake-3.4.3-Linux-x86_64.tar.gz
          echo 'export PATH=$HOME/cmake/bin:$PATH' >> $BASH_ENV
          source $BASH_ENV && cmake --version | grep 3.4

  install-swiftshader-gles:
    steps:
    - run:
        name: Install SwiftShader GLES
        # Zip from https://github.com/mosra/magnum-ci/tree/swiftshader and
        # self-hosted because GH Actions would make it too simple for people if
        # you could just download the artifacts directly, right? RIGHT?
        command: |
          apt install -y wget unzip
          mkdir -p $HOME/swiftshader && cd $HOME/swiftshader
          wget https://ci.magnum.graphics/swiftshader-gles-r5464.a6940c8e6e-ubuntu-16.04.zip
          unzip swiftshader-gles-r5464.a6940c8e6e-ubuntu-16.04.zip

  setup-null-openal-driver:
    steps:
    - run:
        name: Set up a null OpenAL driver
        command: printf "[General]\ndrivers=null" > ~/.alsoftrc

  build:
    parameters:
      script:
        type: string
    steps:
    - checkout
    - run:
        name: Build & test
        command: |
          if [ "$BUILD_STATIC" != "ON" ]; then export BUILD_STATIC=OFF; fi
          if [ "$BUILD_DEPRECATED" != "OFF" ]; then export BUILD_DEPRECATED=ON; fi
          if [ "$BUILD_APPLICATIONS" != "OFF" ]; then export BUILD_APPLICATIONS=ON; fi
          ./package/ci/<< parameters.script >>

  lcov:
    steps:
    - run:
        name: Collect code coverage
        # Keep in sync with PKBUILD-coverage, travis.yml and appveyor-lcov.sh,
        # please
        command: |
          lcov $LCOV_EXTRA_OPTS --directory . --capture --output-file coverage.info > /dev/null
          lcov $LCOV_EXTRA_OPTS --extract coverage.info "*/src/Magnum*/*" --output-file coverage.info > /dev/null
          lcov $LCOV_EXTRA_OPTS --remove coverage.info "*/MagnumExternal/*" --output-file coverage.info > /dev/null
          lcov $LCOV_EXTRA_OPTS --remove coverage.info "*/Test/*" --output-file coverage.info > /dev/null
          lcov $LCOV_EXTRA_OPTS --remove coverage.info "*/build/src/*" --output-file coverage.info > /dev/null
    - codecov/upload:
        file: coverage.info

jobs:
  linux-gl:
    executor: ubuntu-16_04
    environment:
      CMAKE_CXX_FLAGS: --coverage
      LCOV_EXTRA_OPTS: --gcov-tool /usr/bin/gcov-4.8
      CONFIGURATION: Debug
      PLATFORM_GL_API: GLX
    steps:
    - install-base:
        extra: libgl1-mesa-dev libsdl2-dev libglfw3-dev libopenal-dev
    - install-gcc-4_8
    - install-cmake-3_4
    - setup-null-openal-driver
    - build:
        script: unix-desktop.sh
    - lcov

  linux-vulkan:
    executor: ubuntu-16_04
    # Using default GCC and CMake version here
    environment:
      CMAKE_CXX_FLAGS: --coverage
      CONFIGURATION: Debug
    steps:
    - install-base:
        extra: cmake libsdl2-dev libglfw3-dev
    - build:
        script: unix-desktop-vulkan.sh
    - lcov

  linux-gles2:
    executor: ubuntu-16_04
    environment:
      CMAKE_CXX_FLAGS: --coverage
      LCOV_EXTRA_OPTS: --gcov-tool /usr/bin/gcov-4.8
      CONFIGURATION: Debug
      PLATFORM_GL_API: EGL
      # STUPID yml interprets unquoted ON as a boolean
      TARGET_GLES2: "ON"
    steps:
    - install-base:
        extra: libsdl2-dev libglfw3-dev
    - install-gcc-4_8
    - install-cmake-3_4
    - install-swiftshader-gles
    - build:
        script: unix-desktop-gles.sh
    - lcov

  linux-gles3:
    executor: ubuntu-16_04
    environment:
      CMAKE_CXX_FLAGS: --coverage
      LCOV_EXTRA_OPTS: --gcov-tool /usr/bin/gcov-4.8
      CONFIGURATION: Debug
      PLATFORM_GL_API: EGL
      # STUPID yml interprets unquoted OFF as a boolean
      TARGET_GLES2: "OFF"
    steps:
    - install-base:
        extra: libsdl2-dev libglfw3-dev
    - install-gcc-4_8
    - install-cmake-3_4
    - install-swiftshader-gles
    - build:
        script: unix-desktop-gles.sh
    - lcov

  linux-static:
    executor: ubuntu-16_04
    environment:
      # STUPID yml interprets unquoted ON as a boolean
      # https://stackoverflow.com/questions/53648244/specifying-the-string-value-yes-in-a-yaml-property
      BUILD_STATIC: "ON"
      CMAKE_CXX_FLAGS: --coverage
      LCOV_EXTRA_OPTS: --gcov-tool /usr/bin/gcov-4.8
      CONFIGURATION: Debug
      PLATFORM_GL_API: GLX
    steps:
    - install-base:
        extra: libgl1-mesa-dev libsdl2-dev libglfw3-dev libopenal-dev
    - install-gcc-4_8
    - install-cmake-3_4
    - setup-null-openal-driver
    - build:
        script: unix-desktop.sh
    - lcov

  linux-nondeprecated:
    executor: ubuntu-16_04
    environment:
      # STUPID yml interprets unquoted OFF as a boolean
      BUILD_DEPRECATED: "OFF"
      CMAKE_CXX_FLAGS: -DCORRADE_NO_ASSERT
      CONFIGURATION: Release
      PLATFORM_GL_API: GLX
    steps:
    - install-base:
        extra: libgl1-mesa-dev libsdl2-dev libglfw3-dev libopenal-dev
    - install-gcc-4_8
    - install-cmake-3_4
    - setup-null-openal-driver
    - build:
        script: unix-desktop.sh

  linux-sanitizers:
    executor: ubuntu-16_04
    environment:
      # STUPID yml interprets unquoted OFF as a boolean. Applications don't
      # have any automated tests, so building them for sanitizers doesn't make
      # sense.
      BUILD_APPLICATIONS: "OFF"
      CMAKE_CXX_FLAGS: -fsanitize=address
      CONFIGURATION: Debug
      PLATFORM_GL_API: GLX
    steps:
    - install-base:
        extra: libgl1-mesa-dev libopenal-dev
    - install-clang-3_8
    - install-cmake-3_4
    - setup-null-openal-driver
    - build:
        script: unix-desktop.sh

  linux-threadsanitizer:
    executor: ubuntu-16_04
    environment:
      # STUPID yml interprets unquoted OFF as a boolean. Applications don't
      # have any automated tests, so building them for sanitizers doesn't make
      # sense.
      BUILD_APPLICATIONS: "OFF"
      CMAKE_CXX_FLAGS: -fsanitize=thread
      CONFIGURATION: Debug
      PLATFORM_GL_API: GLX
    steps:
    - install-base:
        extra: libgl1-mesa-dev libopenal-dev
    - install-clang-3_8
    - install-cmake-3_4
    - setup-null-openal-driver
    - build:
        script: unix-desktop.sh

  emscripten-webgl1:
    executor: emscripten
    environment:
      # STUPID yml interprets unquoted ON as a boolean
      TARGET_GLES2: "ON"
    steps:
    - install-base
    - build:
        script: emscripten.sh

  emscripten-webgl2:
    executor: emscripten
    environment:
      # STUPID yml interprets unquoted OFF as a boolean
      TARGET_GLES2: "OFF"
    steps:
    - install-base
    - build:
        script: emscripten.sh

workflows:
  version: 2
  build:
    jobs:
    - linux-gl
    - linux-vulkan
    - linux-gles2
    - linux-gles3
    - linux-static
    - linux-nondeprecated
    - linux-sanitizers
    - linux-threadsanitizer
    - emscripten-webgl1
    - emscripten-webgl2