workflows:
    version: 2
    gcc_1:
        jobs:
          - gcc
    clang_1:
        jobs:
          - clang
    clang_tidy:
        jobs:
          - clang-tidy

update_and_install_prereqs: &update_and_install_prereqs
    - checkout
    - run: apt-get update &&  apt-get upgrade -y
    - run:
        name: Get wget and apt-key
        command: |
            apt-get install wget -y
            apt-get install software-properties-common -y
    - run:
        name: Set up LLVM-8 repo
        command: |
            wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key |  apt-key add -
            add-apt-repository 'deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-8 main'
            add-apt-repository 'deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-7 main'
            apt update -qq
    - run:
        name: Install LLVM-8 binaries
        command: |
            apt install clang-format-8 -y
            apt install clang-tidy-7 -y
            apt install clang-8 -y
            apt install clang -y
    - run:
        name: Run clang-format
        command: python ./build_scripts/run-clang-format.py ./src -r --color always --clang-format-executable clang-format-8
    - run:
        name: Install g++-7
        command: |
            add-apt-repository ppa:ubuntu-toolchain-r/test
            apt update
            apt install g++-7 -y
    - run:
        name: Add required QT repos
        command: |
            add-apt-repository ppa:beineri/opt-qt-5.12.2-xenial -y
            apt-get update -qq
    - run: apt-get install build-essential libgl1-mesa-dev -y
    - run:
        name: Install QT packages
        command: |
            apt-get install qt512-meta-minimal qt512multimedia qt512declarative qt512quickcontrols2 qt512quickcontrols qt512tools qt512imageformats qt512svg qt512base qtchooser -y
    - run:
        name: Install X11 packages
        command: apt-get install libx11-dev libxt-dev libxtst-dev -y
    - run:
        name: Install bear/clang-tidy
        command: apt-get install bear clang-tidy -y
    - run:
        name: Set up qtchooser
        command: qtchooser -install opt-qt512 /opt/qt512/bin/qmake
    - run:
        name: Give build scripts +x
        command: |
            chmod +x ./build_scripts/linux/build_linux.sh
            chmod +x ./build_scripts/linux/format.sh
            chmod +x ./build_scripts/linux/run-clang-tidy.sh
            chmod +x ./build_scripts/linux/verify_formatting.sh
    - run:
        name: Run build script
        command: ./build_scripts/linux/build_linux.sh

jobs:
    gcc:
        environment:
            QMAKE_SPEC: linux-g++
            QT_SELECT: opt-qt512
            MAKE_JOBS: 2
        docker:
            - image: circleci/buildpack-deps:xenial
        steps:
            - checkout
            - run: sudo apt-get update && sudo apt-get upgrade -y
            - run:
                name: Get apt-key
                # Required for LLVM
                command: |
                    sudo apt-get install software-properties-common -y
            - run:
                name: Get LLVM repos
                command: |
                    wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
                    sudo add-apt-repository 'deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-8 main'
                    sudo add-apt-repository 'deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-7 main'
                    sudo apt-get update -qq
            - run:
                name: Install LLVM-8 binaries
                # clang is required due to a check by Qmake.
                # clang-tidy-8 has new errors compared to clang-tidy-7, so we haven't upgraded.
                command: |
                    sudo apt-get install clang-format-8 -y
                    sudo apt-get install clang-tidy-7 -y
                    sudo apt-get install clang-8 -y
                    sudo apt-get install clang -y
            - run:
                name: Run clang-format
                command: python ./build_scripts/run-clang-format.py ./src -r --color always --clang-format-executable clang-format-8
            - run:
                name: Install g++
                command: |
                    sudo add-apt-repository ppa:ubuntu-toolchain-r/test
                    sudo apt-get update
                    sudo apt-get install g++-7 -y
            - run:
                name: Add required QT repos
                command: |
                    sudo add-apt-repository ppa:beineri/opt-qt-5.12.2-xenial -y
                    sudo apt-get update -qq
            - run: sudo apt-get install build-essential libgl1-mesa-dev -y
            - run:
                name: Install QT packages
                command: |
                    sudo apt-get install qt512-meta-minimal qt512multimedia qt512declarative qt512quickcontrols2 qt512quickcontrols qt512tools qt512imageformats qt512svg qt512base qtchooser -y
            - run:
                name: Install X11 packages
                command: sudo apt-get install libx11-dev libxt-dev libxtst-dev -y
            - run:
                name: Install bear/clang-tidy
                command: sudo apt-get install bear clang-tidy -y
            - run:
                name: Set up qtchooser
                command: qtchooser -install opt-qt512 /opt/qt512/bin/qmake
            - run:
                name: Give build scripts +x
                command: |
                    chmod +x ./build_scripts/linux/build_linux.sh
                    chmod +x ./build_scripts/linux/format.sh
                    chmod +x ./build_scripts/linux/run-clang-tidy.sh
                    chmod +x ./build_scripts/linux/verify_formatting.sh
            - run:
                name: Update version number
                command: |
                    python ./build_scripts/append_to_version_file.py $(git rev-parse HEAD | cut -c -8)
                    cat ./build_scripts/compile_version_string.txt
            - run:
                name: Run build script
                command: ./build_scripts/linux/build_linux.sh
            - run:
                name: Get qtdeploylinux
                command: |
                    wget -c -nv https://github.com/probonopd/linuxdeployqt/releases/download/continuous/linuxdeployqt-continuous-x86_64.AppImage
                    chmod a+x ./linuxdeployqt-continuous-x86_64.AppImage
            - run:
                name: Create AppImage
                command: ./build_scripts/linux/appimage.sh
            - run:
                name: Copy Artifacts
                command: |
                    mkdir artifacts
                    cp -v ./OpenVR_Advanced_Settings-*.AppImage ./artifacts/
            - store_artifacts:
                path: ./artifacts/

    clang:
        environment:
            QMAKE_SPEC: linux-clang
            QT_SELECT: opt-qt512
            MAKE_JOBS: 2
        docker:
            - image: "ubuntu:xenial"
        steps: *update_and_install_prereqs
            
    clang-tidy:
        environment:
            QMAKE_SPEC: linux-clang
            QT_SELECT: opt-qt512
            USE_TIDY: TRUE
            CLANG_TIDY_EXECUTABLE: clang-tidy-7
            MAKE_JOBS: 2
        docker:
            - image: "ubuntu:xenial"
        steps: *update_and_install_prereqs