name: Builds matrix
on: [push]

# Global Settings
env:
  WEBRTC_BRANCH: branch-heads/4472
  WEBRTC_URL: https://chromium.googlesource.com/external/webrtc
  MSVC_PATH: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC'

jobs:
  config:
    name: "Find git revision"
    runs-on: "ubuntu-20.04"
    outputs:
      revision: ${{ steps.config.outputs.revision }}
      name: ${{ steps.config.outputs.name }}
    steps:
      - name: Configure shared properties.
        id: config
        shell: bash
        run: |
          REVISION=$(git ls-remote $WEBRTC_URL --heads $WEBRTC_BRANCH | head -n 1 | cut -f 1)
          INTERNAL=$(curl --silent ${WEBRTC_URL}/+/${REVISION}?format=TEXT | base64 -d | tail -1 | egrep -o '{#([0-9]+)}' | tr -d '{}#' | cut -c1-7)
          NAME="webrtc-${INTERNAL}-${REVISION:0:7}"

          echo "Repository: ${WEBRTC_URL}"
          echo "Branch: ${WEBRTC_BRANCH}"
          echo "Revision: ${REVISION}"
          echo "Internal revision: ${INTERNAL}"
          echo "Output: ${NAME}"

          echo "::set-output name=revision::${REVISION}"
          echo "::set-output name=name::${NAME}"

  build:
    name: "Build"
    needs: config
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        include:
          # Android
          - target_os: android
            arch: arm
            custom_gnargs: use_custom_libcxx=false
            gclient_os: '["android", "unix"]'
            os: ubuntu-20.04
          - target_os: android
            arch: arm64
            custom_gnargs: use_custom_libcxx=false
            gclient_os: '["android", "unix"]'
            os: ubuntu-20.04
          - target_os: android
            arch: x86
            custom_gnargs: use_custom_libcxx=false
            gclient_os: '["android", "unix"]'
            os: ubuntu-20.04
          - target_os: android
            arch: x64
            custom_gnargs: use_custom_libcxx=false
            gclient_os: '["android", "unix"]'
            os: ubuntu-20.04

          # iOS
          - target_os: ios
            arch: arm
            custom_gnargs: use_custom_libcxx=false ios_enable_code_signing=false
            gclient_os: '["ios", "mac"]'
            os: macos-latest
          - target_os: ios
            arch: arm64
            custom_gnargs: use_custom_libcxx=false ios_enable_code_signing=false
            gclient_os: '["ios", "mac"]'
            os: macos-latest
          - target_os: ios
            arch: x64
            custom_gnargs: use_custom_libcxx=false ios_enable_code_signing=false
            gclient_os: '["ios", "mac"]'
            os: macos-latest

          # Linux
          - target_os: linux
            arch: x86
            custom_gnargs: use_custom_libcxx=false use_glib=false
            gclient_os: '["linux"]'
            os: ubuntu-20.04
          - target_os: linux
            arch: x64
            custom_gnargs: use_custom_libcxx=false use_glib=false
            gclient_os: '["linux"]'
            os: ubuntu-20.04

          # macOS
          - target_os: mac
            arch: arm64
            custom_gnargs: use_custom_libcxx=false
            gclient_os: '["mac"]'
            os: macos-latest
          - target_os: mac
            arch: x64
            custom_gnargs: use_custom_libcxx=false
            gclient_os: '["mac"]'
            os: macos-latest

          # Windows
          - target_os: win
            arch: x86
            # Windows 32 goes out memory when building libaom release. Disable libaom.
            custom_gnargs: is_clang=false enable_iterator_debugging=true enable_libaom=false
            gclient_os: '["win"]'
            msvc_arch: amd64_x86
            os: windows-2019
          - target_os: win
            arch: x64
            custom_gnargs: is_clang=false enable_iterator_debugging=true
            gclient_os: '["win"]'
            msvc_arch: amd64_x86
            os: windows-2019

    env:
      DEPOT_TOOLS: ${{ github.workspace }}/depot_tools
      DEPOT_TOOLS_WIN_TOOLCHAIN: 0
      GNARGS: 'is_component_build=false rtc_include_tests=false treat_warnings_as_errors=false rtc_build_examples=false use_rtti=true target_os=\"${{ matrix.target_os }}\" target_cpu=\"${{ matrix.arch }}\" ${{ matrix.custom_gnargs }}'
      GNARGS_RELEASE: "is_debug=false strip_debug_info=true symbol_level=0"
      OUTPUT_NAME: ${{ needs.config.outputs.name }}-${{ matrix.target_os }}-${{ matrix.arch }}
      TEMP_ARTIFACT: ${{ github.job }}-${{ matrix.target_os }}-${{ matrix.arch }}
    steps:
      - uses: actions/checkout@v2

      - name: Setup MSVC environment
        if: ${{ matrix.target_os == 'win' }}
        shell: bash
        run: |
          '${{ env.MSVC_PATH }}\Auxiliary\Build\vcvarsall.bat' ${{ matrix.msvc_arch }}
          MSVC_TOOLS=$(find '${{ env.MSVC_PATH }}\Tools\MSVC' -maxdepth 1 -type d | sort -r | head -n 1)
          echo ${MSVC_TOOLS}'\bin\Hostx64\x64\' >> $GITHUB_PATH

      - name: Install Linux dependencies
        if: ${{ matrix.target_os == 'linux' }}
        run: |
          sudo dpkg --add-architecture i386
          sudo apt-get install clang gcc gcc-multilib g++ g++-multilib

      - name: Install depot tools
        shell: bash
        run: |
          git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git $DEPOT_TOOLS
          echo $DEPOT_TOOLS >> $GITHUB_PATH

      # We should always be explicit with our flags usage here since it's gonna be sure to always set those flags
      - name: Setup gclient build config
        shell: bash
        run: |
          # Create config
          mkdir out
          cp gclient out/.gclient
          echo 'target_os = ${{ matrix.gclient_os }}' >> out/.gclient

      - name: Checkout WebRTC and run hooks
        shell: bash
        working-directory: out
        run: |
          gclient sync --no_bootstrap --shallow --no-history -vv --revision ${{ needs.config.outputs.revision }}

      - name: Patch the WebRTC sources (allow dynamic crt on windows)
        if: ${{ matrix.target_os == 'win' }}
        shell: bash
        working-directory: out
        run: |
          sed -i 's|:static_crt|:dynamic_crt|' src/build/config/win/BUILD.gn
          cat src/build/config/win/BUILD.gn

      - name: Tar headers
        id: tar-headers
        uses: ./.github/actions/tar_headers
        with:
          srcdir: out/src

      - name: Upload header artifact
        uses: actions/upload-artifact@v2
        with:
          name: ${{ env.TEMP_ARTIFACT }}-headers
          path: out/src/${{ steps.tar-headers.outputs.tarball }}
          retention-days: 1

      - name: Build - Debug
        shell: bash
        working-directory: out/src
        run: |
          gn gen out --args="${{ env.GNARGS }}"
          ninja -v -C out webrtc

      - name: Combine - Debug
        uses: ./.github/actions/combine_library
        id: combine-debug
        with:
          platform: ${{ matrix.target_os }}
          builddir: out/src/out

      - name: Upload debug artifact
        uses: actions/upload-artifact@v2
        with:
          name: ${{ env.TEMP_ARTIFACT }}-debug
          path: out/src/out/${{ steps.combine-debug.outputs.library }}
          retention-days: 1

      # Release
      - name: Build - Release
        shell: bash
        working-directory: out/src
        run: |
          echo "Clean up debug build to free up space"
          rm -rf out
          gn gen out --args="${{ env.GNARGS }} ${{ env.GNARGS_RELEASE }}"
          ninja -v -C out webrtc

      - name: Combine - Release
        uses: ./.github/actions/combine_library
        id: combine-release
        with:
          platform: ${{ matrix.target_os }}
          builddir: out/src/out

      - name: Upload release artifact
        uses: actions/upload-artifact@v2
        with:
          name: ${{ env.TEMP_ARTIFACT }}-release
          path: out/src/out/${{ steps.combine-release.outputs.library }}
          retention-days: 1

      - name: Cleanup space
        shell: bash
        run: |
          rm -rf out

      - name: Download library artifact - Debug
        uses: actions/download-artifact@v2
        with:
          path: ${{ matrix.target_os }}/lib/${{ matrix.arch }}/Debug
          name: ${{ env.TEMP_ARTIFACT }}-debug

      - name: Download library artifact - Release
        uses: actions/download-artifact@v2
        with:
          path: ${{ matrix.target_os }}/lib/${{ matrix.arch }}/Release
          name: ${{ env.TEMP_ARTIFACT }}-release

      - name: Download includes
        uses: actions/download-artifact@v2
        with:
          path: ${{ matrix.target_os }}
          name: ${{ env.TEMP_ARTIFACT }}-headers

      - name: Pack full release artifact
        working-directory: ${{ matrix.target_os }}
        shell: bash
        run: |
          mkdir include
          tar -xf ${{ steps.tar-headers.outputs.tarball }} -C include
          tar -czf $OUTPUT_NAME.tar.gz include lib

      - name: Upload final artifact
        uses: actions/upload-artifact@v2
        with:
          name: ${{ env.OUTPUT_NAME }}.tar.gz
          path: ${{ matrix.target_os }}/${{ env.OUTPUT_NAME }}.tar.gz