version: 2
jobs:

  lint:
    docker:
    - image: ethereum/cpp-build-env
    steps:
    - checkout
    - run:
        name: "Check code format"
        command: |
          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

  build: &build
    docker:
      - image: ethereum/cpp-build-env
    steps:
      - checkout
      - run:
          name: "Configure"
          working_directory: ~/build
          command: cmake ../project -DCMAKE_INSTALL_PREFIX=~/install -DBUILD_SHARED_LIBS=ON -DEVMC_EXAMPLES=ON -DEVMC_TESTING=ON
      - run:
          name: "Build"
          command: cmake --build ~/build
      - run:
          name: "Unit tests"
          working_directory: ~/build/test
          command: ./evmc-test
      - run:
          name: "Test"
          command: cmake --build ~/build --target test
      - 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
      - run:
          name: "Test CMake package config"
          command: |
            mkdir ~/build-example-evmc && cd ~/build-example-evmc
            cmake ~/project/examples/use_evmc_in_cmake -DCMAKE_PREFIX_PATH=~/install
            cmake --build .

            mkdir ~/build-example-instructions && cd ~/build-example-instructions
            cmake ~/project/examples/use_instructions_in_cmake -DCMAKE_PREFIX_PATH=~/install
            cmake --build .
      - run:
          name: "Run evmc-vmtester libevmc-example-vm.so"
          command: ~/install/bin/evmc-vmtester ~/install/lib/libevmc-example-vm.so

  build-clang-3.8:
    <<: *build
    environment:
      CC: clang-3.8
      CXX: clang++-3.8

  test-docs:
    docker:
      - image: ethereum/cpp-build-env
    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
    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-1.10:
    docker:
      - image: circleci/golang:1.10
    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

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


workflows:
  version: 2
  evmc:
    jobs:
      - lint
      - build
      - build-clang-3.8
      - bindings-go-1.10
      - bindings-go-1.9
      - test-docs
      - upload-docs:
          requires:
            - test-docs
          filters:
            branches:
              only:
                - master
                - docs