# Continuous integration and pull request validation builds for the
# main and maintenance branches.
name: CI Build

on:
  push:
    branches: [ main, maint/* ]
  pull_request:
    branches: [ main, maint/* ]
  workflow_dispatch:

env:
  docker-registry: docker.pkg.github.com
  docker-config-path: source/ci/docker

jobs:
  # Build the docker container images that we will use for our Linux
  # builds.  This will identify the last commit to the repository that
  # updated the docker images, and try to download the image tagged with
  # that sha.  If it does not exist, we'll do a docker build and push
  # the image up to GitHub Packages for the actual CI/CD runs.  We tag
  # with both the sha and "latest" so that the subsequent runs need not
  # know the sha.  Only do this on CI builds (when the event is a "push")
  # because PR builds from forks lack permission to write packages.
  build_containers:
    name: Create docker image
    strategy:
      matrix:
        container:
        - name: xenial
        - name: bionic
        - name: focal
        - name: docurium
        - name: bionic-x86
          dockerfile: bionic
          base: multiarch/ubuntu-core:x86-bionic
          qemu: true
        - name: bionic-arm32
          dockerfile: bionic
          base: multiarch/ubuntu-core:armhf-bionic
          qemu: true
        - name: bionic-arm64
          dockerfile: bionic
          base: multiarch/ubuntu-core:arm64-bionic
          qemu: true
        - name: centos7
        - name: centos8
    runs-on: ubuntu-latest
    steps:
    - name: Check out repository
      uses: actions/checkout@v2
      with:
        path: source
        fetch-depth: 0
      if: github.event_name != 'pull_request'
    - name: Setup QEMU
      run: docker run --rm --privileged multiarch/qemu-user-static:register --reset
      if: matrix.container.qemu == true
    - name: Download existing container
      run: |
        "${{ github.workspace }}/source/ci/getcontainer.sh" "${{ matrix.container.name }}" "${{ matrix.container.dockerfile }}"
      env:
        DOCKER_REGISTRY: ${{ env.docker-registry }}
        GITHUB_TOKEN: ${{ secrets.github_token }}
      working-directory: ${{ env.docker-config-path }}
      if: github.event_name != 'pull_request'
    - name: Build and publish image
      run: |
        if [ "${{ matrix.container.base }}" != "" ]; then
          BASE_ARG="--build-arg BASE=${{ matrix.container.base }}"
        fi
        docker build -t ${{ env.docker-registry-container-sha }} ${BASE_ARG} -f ${{ env.dockerfile }} .
        docker tag ${{ env.docker-registry-container-sha }} ${{ env.docker-registry-container-latest }}
        docker push ${{ env.docker-registry-container-sha }}
        docker push ${{ env.docker-registry-container-latest }}
      working-directory: ${{ env.docker-config-path }}
      if: github.event_name != 'pull_request' && env.docker-container-exists != 'true'

  # Run our CI/CD builds.  We build a matrix with the various build targets
  # and their details.  Then we build either in a docker container (Linux)
  # or on the actual hosts (macOS, Windows).
  build:
    name: Build
    needs: [ build_containers ]
    strategy:
      matrix:
        platform:
        - # Xenial, GCC, OpenSSL
          container:
            name: xenial
          env:
            CC: gcc
            CMAKE_GENERATOR: Ninja
            CMAKE_OPTIONS: -DUSE_HTTPS=OpenSSL -DREGEX_BACKEND=builtin -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=valgrind -DUSE_GSSAPI=ON -DUSE_SSH=ON -DDEBUG_STRICT_ALLOC=ON -DDEBUG_STRICT_OPEN=ON
          os: ubuntu-latest
        - # Xenial, GCC, mbedTLS
          container:
            name: xenial
          env:
            CC: gcc
            CMAKE_GENERATOR: Ninja
            CMAKE_OPTIONS: -DUSE_HTTPS=mbedTLS -DUSE_SHA1=HTTPS -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=valgrind -DUSE_GSSAPI=ON -DUSE_SSH=ON
          os: ubuntu-latest
        - # Xenial, Clang, OpenSSL
          container:
            name: xenial
          env:
            CC: clang
            CMAKE_GENERATOR: Ninja
            CMAKE_OPTIONS: -DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=valgrind -DUSE_GSSAPI=ON -DUSE_SSH=ON
          os: ubuntu-latest
        - # Xenial, Clang, mbedTLS
          container:
            name: xenial
          env:
            CC: clang
            CMAKE_OPTIONS: -DUSE_HTTPS=mbedTLS -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=valgrind -DUSE_GSSAPI=ON -DUSE_SSH=ON
            CMAKE_GENERATOR: Ninja
          os: ubuntu-latest
        - # Focal, Clang 10, mbedTLS, MemorySanitizer
          container:
            name: focal
          env:
            CC: clang-10
            CFLAGS: -fsanitize=memory -fsanitize-memory-track-origins=2 -fsanitize-blacklist=/home/libgit2/source/script/sanitizers.supp -fno-optimize-sibling-calls -fno-omit-frame-pointer
            CMAKE_OPTIONS: -DCMAKE_PREFIX_PATH=/usr/local/msan -DUSE_HTTPS=mbedTLS -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON -DUSE_SSH=ON
            CMAKE_GENERATOR: Ninja
            SKIP_SSH_TESTS: true
            SKIP_NEGOTIATE_TESTS: true
            ASAN_SYMBOLIZER_PATH: /usr/bin/llvm-symbolizer-10
            UBSAN_OPTIONS: print_stacktrace=1
          os: ubuntu-latest
        - # Focal, Clang 10, OpenSSL, UndefinedBehaviorSanitizer
          container:
            name: focal
          env:
            CC: clang-10
            CFLAGS: -fsanitize=undefined,nullability -fno-sanitize-recover=undefined,nullability -fsanitize-blacklist=/home/libgit2/source/script/sanitizers.supp -fno-optimize-sibling-calls -fno-omit-frame-pointer
            CMAKE_OPTIONS: -DCMAKE_PREFIX_PATH=/usr/local -DUSE_HTTPS=OpenSSL -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON -DUSE_SSH=ON
            CMAKE_GENERATOR: Ninja
            SKIP_SSH_TESTS: true
            SKIP_NEGOTIATE_TESTS: true
            ASAN_SYMBOLIZER_PATH: /usr/bin/llvm-symbolizer-10
            UBSAN_OPTIONS: print_stacktrace=1
          os: ubuntu-latest
        - # Focal, Clang 10, OpenSSL, ThreadSanitizer
          container:
            name: focal
          env:
            CC: clang-10
            CFLAGS: -fsanitize=thread -fno-optimize-sibling-calls -fno-omit-frame-pointer
            CMAKE_OPTIONS: -DCMAKE_PREFIX_PATH=/usr/local -DUSE_HTTPS=OpenSSL -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON -DUSE_SSH=ON
            CMAKE_GENERATOR: Ninja
            SKIP_SSH_TESTS: true
            SKIP_NEGOTIATE_TESTS: true
            ASAN_SYMBOLIZER_PATH: /usr/bin/llvm-symbolizer-10
            UBSAN_OPTIONS: print_stacktrace=1
            TSAN_OPTIONS: suppressions=/home/libgit2/source/script/thread-sanitizer.supp second_deadlock_stack=1
          os: ubuntu-latest
        - # macOS
          os: macos-10.15
          env:
            CC: clang
            CMAKE_OPTIONS: -DREGEX_BACKEND=regcomp_l -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=leaks -DUSE_GSSAPI=ON
            PKG_CONFIG_PATH: /usr/local/opt/openssl/lib/pkgconfig
            SKIP_SSH_TESTS: true
            SKIP_NEGOTIATE_TESTS: true
          setup-script: osx
        - # Windows amd64 Visual Studio
          os: windows-2019
          env:
            ARCH: amd64
            CMAKE_GENERATOR: Visual Studio 16 2019
            CMAKE_OPTIONS: -A x64 -DWIN32_LEAKCHECK=ON -DDEPRECATE_HARD=ON
            SKIP_SSH_TESTS: true
            SKIP_NEGOTIATE_TESTS: true
        - # Windows x86 Visual Studio
          os: windows-2019
          env:
            ARCH: x86
            CMAKE_GENERATOR: Visual Studio 16 2019
            CMAKE_OPTIONS: -A Win32 -DWIN32_LEAKCHECK=ON -DDEPRECATE_HARD=ON -DUSE_SHA1=HTTPS -DUSE_BUNDLED_ZLIB=ON
            SKIP_SSH_TESTS: true
            SKIP_NEGOTIATE_TESTS: true
        - # Windows amd64 mingw
          os: windows-2019
          setup-script: mingw
          env:
            ARCH: amd64
            CMAKE_GENERATOR: MinGW Makefiles
            CMAKE_OPTIONS: -DDEPRECATE_HARD=ON
            BUILD_TEMP: D:\Temp
            BUILD_PATH: D:\Temp\mingw64\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files (x86)\CMake\bin
            SKIP_SSH_TESTS: true
            SKIP_NEGOTIATE_TESTS: true
        - # Windows x86 mingw
          os: windows-2019
          setup-script: mingw
          env:
            ARCH: x86
            CMAKE_GENERATOR: MinGW Makefiles
            CMAKE_OPTIONS: -DDEPRECATE_HARD=ON
            BUILD_TEMP: D:\Temp
            BUILD_PATH: D:\Temp\mingw32\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files (x86)\CMake\bin
            SKIP_SSH_TESTS: true
            SKIP_NEGOTIATE_TESTS: true
      fail-fast: false
    env: ${{ matrix.platform.env }}
    runs-on: ${{ matrix.platform.os }}
    steps:
    - name: Check out repository
      uses: actions/checkout@v2
      with:
        path: source
        fetch-depth: 0
    - name: Set up build environment
      run: source/ci/setup-${{ matrix.platform.setup-script }}.sh
      shell: bash
      if: matrix.platform.setup-script != ''
    - name: Setup QEMU
      run: docker run --rm --privileged multiarch/qemu-user-static:register --reset
      if: matrix.platform.container.qemu == true
    - name: Download container
      run: |
        "${{ github.workspace }}/source/ci/getcontainer.sh" "${{ matrix.platform.container.name }}" "${{ matrix.platform.container.dockerfile }}"
      env:
        DOCKER_REGISTRY: ${{ env.docker-registry }}
        GITHUB_TOKEN: ${{ secrets.github_token }}
      working-directory: ${{ env.docker-config-path }}
      if: matrix.platform.container.name != ''
    - name: Create container
      run: docker build -t ${{ env.docker-registry-container-sha }} -f ${{ env.dockerfile }} .
      working-directory: ${{ env.docker-config-path }}
      if: matrix.platform.container.name != '' && env.docker-container-exists != 'true'
    - name: Build and test
      run: |
        export GITTEST_NEGOTIATE_PASSWORD="${{ secrets.GITTEST_NEGOTIATE_PASSWORD }}"

        if [ -n "${{ matrix.platform.container.name }}" ]; then
          docker run \
              --rm \
              --user libgit2:libgit2 \
              -v "$(pwd)/source:/home/libgit2/source" \
              -w /home/libgit2 \
              -e ASAN_SYMBOLIZER_PATH \
              -e CC \
              -e CFLAGS \
              -e CMAKE_GENERATOR \
              -e CMAKE_OPTIONS \
              -e GITTEST_NEGOTIATE_PASSWORD \
              -e PKG_CONFIG_PATH \
              -e SKIP_NEGOTIATE_TESTS \
              -e SKIP_SSH_TESTS \
              -e TSAN_OPTIONS \
              -e UBSAN_OPTIONS \
              ${{ env.docker-registry-container-sha }} \
              /bin/bash -c "mkdir build && cd build && ../source/ci/build.sh && ../source/ci/test.sh"
        else
          mkdir build && cd build
          ../source/ci/build.sh
          ../source/ci/test.sh
        fi
      shell: bash

  # Generate documentation using docurium.  We'll upload the documentation
  # as a build artifact so that it can be reviewed as part of a pull
  # request or in a forked build.  For CI builds in the main repository's
  # main branch, we'll push the gh-pages branch back up so that it is
  # published to our documentation site.
  documentation:
    name: Generate documentation
    needs: [build_containers]
    runs-on: ubuntu-latest
    steps:
    - name: Check out repository
      uses: actions/checkout@v2
      with:
        path: source
        fetch-depth: 0
    - name: Generate documentation
      working-directory: source
      run: |
        git config user.name 'Documentation Generation'
        git config user.email 'libgit2@users.noreply.github.com'
        git branch gh-pages origin/gh-pages
        docker login https://${{ env.docker-registry }} -u ${{ github.actor }} -p ${{ github.token }}
        docker run \
            --rm \
            -v "$(pwd):/home/libgit2" \
            -w /home/libgit2 \
            ${{ env.docker-registry }}/${{ github.repository }}/docurium:latest \
            cm doc api.docurium
        git checkout gh-pages
        zip --exclude .git/\* --exclude .gitignore --exclude .gitattributes -r api-documentation.zip .
    - uses: actions/upload-artifact@v2
      name: Upload artifact
      with:
        name: api-documentation
        path: source/api-documentation.zip
    - name: Push documentation branch
      working-directory: source
      run: git push origin gh-pages
      if: github.event_name == 'push' && github.repository == 'libgit2/libgit2'