version: 2
jobs:

  lint:
    docker:
    - image: ethereum/cpp-build-env:10
    steps:
    - checkout
    - run:
        name: "Check code format"
        command: |
          clang-format --version
          find examples include lib test -name '*.hpp' -o -name '*.cpp' -o -name '*.h' -o -name '*.c' | xargs clang-format -i
          git diff --color --exit-code
    - run:
        name: "Run codespell"
        command: |
          codespell --quiet-level=4 --ignore-words=./.codespell-whitelist

  build: &build
    docker:
      - image: ethereum/cpp-build-env:10
    steps:
      - checkout
      - run:
          name: "Environment"
          command: |
            CC=${CC:-cc}
            CXX=${CXX:-cpp}
            echo CC: $CC
            echo CXX: $CXX
            $CC --version
            $CXX --version
            cmake --version
      - run:
          name: "Configure"
          working_directory: ~/build
          command: cmake ../project -DCMAKE_INSTALL_PREFIX=~/install -DEVMC_TESTING=ON $CMAKE_OPTIONS
      - run:
          name: "Build"
          command: cmake --build ~/build
      - run:
          name: "Test"
          command: cmake --build ~/build --target test -- ARGS="-j4 --schedule-random --output-on-failure"
      - run:
          name: "Install"
          command: cmake --build ~/build --target install
      - run:
          name: "Package"
          command: |
            cmake --build ~/build --target package
            mkdir ~/package
            mv ~/build/evmc-*.tar.gz ~/package
      - store_artifacts:
          path: ~/package
          destination: package

  build-cxx17:
    <<: *build
    environment:
      CC: gcc-8
      CXX: g++-8
      CMAKE_OPTIONS: -DTOOLCHAIN=cxx17-pic

  build-cxx14:
    <<: *build
    environment:
      CC: clang-8
      CXX: clang++-8
      CMAKE_OPTIONS: -DTOOLCHAIN=cxx14-pic

  build-gcc6:
    <<: *build
    environment:
      CC: gcc-6
      CXX: g++-6

  build-clang3.8:
    <<: *build
    environment:
      CC: clang-3.8
      CXX: clang++-3.8

  test-docs:
    docker:
      - image: ethereum/cpp-build-env:10
    steps:
      - checkout
      - run:
          name: "Test documentation"
          command: |
            cat Doxyfile | sed 's/HTML_OUTPUT            = ./HTML_OUTPUT            = ..\/docs/' | doxygen - > doxygen.log 2> doxygen.warnings
            if [ -s doxygen.warnings ]; then
              printf '\n\nDoxygen warnings:\n\n'
              cat doxygen.warnings
              exit 1
            fi
            cat doxygen.log
      - store_artifacts:
          path: ~/docs
          destination: docs

  upload-docs:
    docker:
      - image: ethereum/cpp-build-env:10
    steps:
      - checkout
      - run:
          name: "Generate documentation"
          command: doxygen Doxyfile
      - run:
          name: "Upload documentation"
          command: |
            git config user.email "docs-bot@ethereum.org"
            git config user.name "Documentation Bot"
            git add --all
            git commit -m "Update docs"
            git push -f "https://$GITHUB_TOKEN@github.com/ethereum/evmc.git" HEAD:gh-pages

  bindings-go-latest:
    docker:
      - image: circleci/golang
    steps: &bindings-go-steps
      - checkout
      - run:
          name: "Go Build"
          command: |
            go get -v github.com/ethereum/go-ethereum/common
            go build -v ./bindings/go/evmc
            go vet -v ./bindings/go/evmc
            go generate -v ./bindings/go/evmc
            go test -v ./bindings/go/evmc

  bindings-go-min:
    docker:
      - image: circleci/golang:1.9
    steps: *bindings-go-steps

  bindings-rust:
    docker:
      - image: rust:1
    steps:
      - checkout
      - run:
          name: Update environment
          command: |
            apt update
            apt -y install libclang-dev clang
            rustup component add rustfmt
            rustup update
      - run:
          name: Check formatting
          command: |
            rustfmt --version
            cargo fmt --all -- --check
      - run:
          name: Build
          command: cargo build
      - run:
          name: Test
          command: cargo test

workflows:
  version: 2
  evmc:
    jobs:
      - lint
      - build-cxx17
      - build-cxx14
      - build-gcc6
      - build-clang3.8
      - bindings-go-latest
      - bindings-go-min
      - bindings-rust
      - test-docs
      - upload-docs:
          requires:
            - test-docs
          filters:
            branches:
              only:
                - master
                - docs