##
## This workflow handles testing of pull requests and pushes.
## It also publishes some packages to any new Erlang/OTP release
##
## To speed this up it would be nice if one could share docker
## images inbetween different jobs, but at the moment this is
## not possible so we need to rebuild all of Erlang/OTP multiple
## times.
##
## Also once the windows runner supports WSL we should implement
## support for building Erlang/OTP here.
##
## When ghcr.io support using the GITHUB_TOKEN we should migrate
## over to use it instead as that should allow us to use the
## built-in caching mechanisms of docker/build-push-action@v2.
## However as things are now we use docker directly to make things
## work.
##

name: Build and check Erlang/OTP

on:
  push:
  pull_request:

jobs:

  pack:
    name: Pack the Erlang/OTP tar.gz
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Create initial pre-release tar 
        run: .github/scripts/init-pre-release.sh
      - name: Upload source tar archive
        uses: actions/upload-artifact@v2
        with:
          name: otp_git_archive
          path: otp_src.tar.gz


  build-windows:
    defaults:
      run:
        shell: wsl-bash {0}
    name: Build Erlang/OTP on Windows
    runs-on: windows-latest
    needs: pack
    steps:
      - uses: Vampire/setup-wsl@v1
        with:
          distribution: Ubuntu-18.04

      - name: Install WSL dependencies
        run: apt update && apt install -y g++-mingw-w64 gcc-mingw-w64 make autoconf unzip

      - name: Install openssl
        shell: cmd
        run: |
          choco install openssl
          move "c:\\Program Files\\OpenSSL-Win64" "c:\\OpenSSL-Win64"

      - name: Download wxWidgets
        run: |
          mkdir -p /mnt/c/opt/local64/pgm/
          cd /mnt/c/opt/local64/pgm/
          wget https://github.com/wxWidgets/wxWidgets/releases/download/v3.1.4/wxWidgets-3.1.4.zip
          unzip wxWidgets-3.1.4.zip -d wxWidgets-3.1.4
          sed -i -r -e 's/wxUSE_POSTSCRIPT +0/wxUSE_POSTSCRIPT 1/' /mnt/c/opt/local64/pgm/wxWidgets-3.1.4/include/wx/msw/setup.h
          sed -i -r -e 's/wxUSE_WEBVIEW_EDGE +0/wxUSE_WEBVIEW_EDGE 1/' /mnt/c/opt/local64/pgm/wxWidgets-3.1.4/include/wx/msw/setup.h

      - name: Install WebView2
        shell: cmd
        run: |
          c:
          cd c:\\opt\\local64\\pgm\\wxWidgets-3.1.4\\3rdparty
          nuget install Microsoft.Web.WebView2 -Version 1.0.705.50
          rename Microsoft.Web.WebView2.1.0.705.50 webview2

      - name: Build wxWidgets
        shell: cmd
        run: |
          c:
          cd c:\\opt\\local64\\pgm\\wxWidgets-3.1.4\\build\\msw
          call "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\VC\Auxiliary\\Build\\vcvars64.bat"
          nmake TARGET_CPU=amd64 BUILD=release SHARED=0 DIR_SUFFIX_CPU= -f makefile.vc

      - name: Download source archive
        uses: actions/download-artifact@v2
        with:
          name: otp_git_archive

      - name: Compile Erlang
        run: |
          tar -xzf ./otp_src.tar.gz
          cd otp
          export ERL_TOP=`pwd`
          eval `./otp_build env_win32 x64`
          ./otp_build configure
          if cat erts/CONF_INFO || cat lib/*/CONF_INFO || cat lib/*/SKIP || cat lib/SKIP-APPLICATIONS; then exit 1; fi
          ./otp_build boot -a
          ./otp_build release -a
          cp /mnt/c/opt/local64/pgm/wxWidgets-3.1.4/3rdparty/webview2/runtimes/win-x64/native/WebView2Loader.dll $ERL_TOP/release/win32/erts-*/bin/
          ./otp_build installer_win32

      - name: Upload installer
        uses: actions/upload-artifact@v2
        with:
          name: otp_prebuilt_win32
          path: otp/release/win32/otp*.exe

  build:
    name: Build Erlang/OTP
    runs-on: ubuntu-latest
    needs: pack

    strategy:
      matrix:
        type: [64-bit,32-bit,cross-compile,documentation]
      fail-fast: false

    steps:
      - uses: actions/checkout@v2
      - name: Download source archive
        uses: actions/download-artifact@v2
        with:
          name: otp_git_archive
      - name: Docker login
        uses: docker/login-action@v1
        with:
          registry: docker.pkg.github.com
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Calculate BASE image
        id: base
        run: |
          BASE_TAG=$(grep "^FROM" .github/dockerfiles/Dockerfile.${{ matrix.type }} | head -1 | awk '{print $2}')
          echo "::set-output name=BASE_TAG::${BASE_TAG}"
          .github/scripts/base-tag "${BASE_TAG}"
      - name: Pull BASE image
        run: docker pull ${{ steps.base.outputs.BASE_TAG }}
      - name: Build BASE image
        run: |
          docker build --pull --tag ${{ steps.base.outputs.BASE_TAG }} \
            --cache-from ${{ steps.base.outputs.BASE_TAG }} \
            --file .github/dockerfiles/Dockerfile.${{ steps.base.outputs.BASE_TYPE }} \
            --build-arg BASE=${{ steps.base.outputs.BASE }} .
      - name: Build ${{ matrix.type }} image
        run: |
          docker build --tag otp --file .github/dockerfiles/Dockerfile.${{ matrix.type }} \
            --build-arg ARCHIVE=otp_src.tar.gz .

        ## Smoke build tests
      - if: matrix.type == '32-bit' || matrix.type == '64-bit' || matrix.type == 'cross-compile'
        name: Run smoke test
        run: docker run -v $PWD/scripts:/scripts otp "cd /tests && /scripts/run-smoke-tests"

        ## Documentation checks
      - if: matrix.type == 'documentation'
        name: Run xmllimt
        run: docker run otp "make xmllint"
      - if: matrix.type == 'documentation'
        name: Run html link check
        run: docker run -v $PWD/scripts:/scripts otp "/scripts/otp_html_check /otp doc/index.html"
      - if: matrix.type == 'documentation'
        name: Release docs to publish
        run: .github/scripts/release-docs.sh
      - if: matrix.type == 'documentation'
        name: Upload html documentation archive
        uses: actions/upload-artifact@v2
        with:
          name: otp_doc_html
          path: otp_doc_html.tar.gz
      - if: matrix.type == 'documentation'
        name: Upload man documentation archive
        uses: actions/upload-artifact@v2
        with:
          name: otp_doc_man
          path: otp_doc_man.tar.gz

        ## Check formatting of cpp code
      - if: matrix.type == '64-bit'
        name: Check format
        run: docker run -v $PWD/scripts:/scripts otp "make format-check"
        ## Run dialyzer
      - if: matrix.type == '64-bit'
        name: Run dialyzer
        run: docker run -v $PWD/scripts:/scripts otp "/scripts/run-dialyzer"

        ## Build pre-built tar archives
      - if: matrix.type == '32-bit'
        name: Build pre-built tar archives
        run: |
          docker run -v $PWD:/github otp \
          "scripts/build-otp-tar -o /github/otp_clean_src.tar.gz /github/otp_src.tar.gz -b /buildroot/otp/ /buildroot/otp.tar.gz"
      - if: matrix.type == '32-bit'
        name: Upload pre-built tar archive
        uses: actions/upload-artifact@v2
        with:
          name: otp_prebuilt
          path: otp_src.tar.gz

  ## If this is a tag that has been pushed we do some release work
  release:
    name: Release Erlang/OTP
    runs-on: ubuntu-latest
    needs: build
    if: startsWith(github.ref, 'refs/tags/') && github.repository == 'erlang/otp'
    steps:
      ## This step outputs the tag name and whether the tag is a release or patch
      ## (all releases have only two version identifiers, while patches have three
      ##  or more)
      - name: Get Tag Name
        id: tag
        run: |
          TAG=${GITHUB_REF#refs/tags/}
          IS_RELEASE=`$(echo $TAG | grep -E '^OTP-[0-9]+\.[0-9]+$' > /dev/null) \
            && echo "true" || echo "false"`
          echo "::set-output name=tag::${TAG}"
          echo "::set-output name=release::${IS_RELEASE}"
      
      - uses: actions/checkout@v2

      ## Publish the pre-built archive and docs
      - name: Download source archive
        uses: actions/download-artifact@v2
        with:
          name: otp_prebuilt
      - name: Download html docs
        uses: actions/download-artifact@v2
        with:
          name: otp_doc_html
      - name: Download man docs
        uses: actions/download-artifact@v2
        with:
          name: otp_doc_man

      ## We add the correct version name into the file names
      ## and create the hash files for all assets
      - name: Create pre-build and doc archives
        run: .github/scripts/create-artifacts.sh artifacts ${{ steps.tag.outputs.tag }}

      - name: Build OTP Bundle
        if: steps.tag.outputs.release == 'true'
        run: |
          scripts/bundle-otp ${{ steps.tag.outputs.tag }}

      ## Create hash files
      - name: Create pre-build and doc archives
        run: |
          shopt -s nullglob
          cd artifacts
          md5sum {*.tar.gz,*.txt} > MD5.txt
          sha256sum {*.tar.gz,*.txt} > SHA256.txt

      - name: Upload pre-built and doc tar archives
        uses: softprops/action-gh-release@v1
        with:
          name: OTP ${{ steps.tag.outputs.vsn }}
          files: |
            artifacts/*.tar.gz
            artifacts/*.txt
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}