# Fluffy
# Copyright (c) 2021-2024 Status Research & Development GmbH
# Licensed and distributed under either of
#   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
#   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.

name: Fluffy CI
on:
  push:
    paths:
      - '.github/workflows/fluffy.yml'
      - 'fluffy/**'
      - '!fluffy/**.md'
      - '!fluffy/docs/**'
      - 'nimbus/rpc/hexstrings.nim'
      - 'nimbus/rpc/rpc_*.nim'
      - 'nimbus/db/**'
      - 'vendor/**'
      - 'Makefile'
      - 'nimbus.nimble'

  pull_request:
    paths:
      - '.github/workflows/fluffy.yml'
      - 'fluffy/**'
      - '!fluffy/**.md'
      - '!fluffy/docs/**'
      - 'nimbus/rpc/hexstrings.nim'
      - 'nimbus/rpc/rpc_*.nim'
      - 'nimbus/db/**'
      - 'vendor/**'
      - 'Makefile'
      - 'nimbus.nimble'

jobs:
  # separate job so it can run concurrently with other tests
  testutp:
    # whole test setup runs on ubuntu so we do not need multiple arch setup here
    runs-on: ubuntu-22.04
    # TODO: for now only push event as this way it is easier to get branch name
    # to build container
    if: github.event_name == 'push'
    steps:
      - name: Checkout nimbus-eth1
        uses: actions/checkout@v4

      - name: Install modprobe
        run: |
          sudo apt-get install -y kmod

      # It is required to correctly run the simulation
      - name: Load iptables6 kernel modules
        run: |
          sudo modprobe ip6table_filter

      - name: Get latest nimbus-build-system commit hash
        id: versions
        run: |
          getHash() {
            git ls-remote "https://github.com/$1" "${2:-HEAD}" | cut -f 1
          }
          nbsHash=$(getHash status-im/nimbus-build-system)
          echo "nimbus_build_system=$nbsHash" >> $GITHUB_OUTPUT

      - name: Restore prebuilt Nim binaries from cache
        id: nim-cache
        uses: actions/cache@v4
        with:
          path: NimBinaries
          key: 'nim-linux-amd64-${{ steps.versions.outputs.nimbus_build_system }}-fluffy'

      - name: Build Nim and Nimbus-eth1 dependencies
        run: |
          make -j${ncpu} ARCH_OVERRIDE=${PLATFORM} CI_CACHE=NimBinaries update-from-ci

      - name: build uTP test app container
        run: |
          docker build -t test-utp --no-cache --build-arg BRANCH_NAME=${{ github.ref_name }} fluffy/tools/utp_testing/docker

      - name: run test app with simulator
        run: |
          : find / -name docker-compose -printf "%h\n%f\n%m\n\n" 2>/dev/null
          PATH=$PATH$(find /usr/libexec/docker -name docker-compose -printf ":%h")
          SCENARIO="drop-rate --delay=15ms --bandwidth=10Mbps --queue=25 --rate_to_client=10 --rate_to_server=10" docker-compose -f fluffy/tools/utp_testing/docker/docker-compose.yml up -d

      - name: wait 5 seconds for containers to start
        run: |
          sleep 5

      - name: check containers
        run: |
          docker ps -a

      - name: run uTP test
        run: |
          export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/usr/local/lib"
          DEFAULT_MAKE_FLAGS="-j${ncpu}"
          env CC=gcc CXX=g++ make ${DEFAULT_MAKE_FLAGS} utp-test

      - name: Stop containers
        if: always()
        run: |
          PATH=$PATH$(find /usr/libexec/docker -name docker-compose -printf ":%h")
          docker-compose -f fluffy/tools/utp_testing/docker/docker-compose.yml down

  build:
    strategy:
      fail-fast: false
      max-parallel: 20
      matrix:
        target:
          - os: linux
            cpu: amd64
          # - os: linux
          #   cpu: i386
          - os: macos
            cpu: amd64
          - os: windows
            cpu: amd64
        include:
          - target:
              os: linux
            builder: ubuntu-22.04
          - target:
              os: macos
            builder: macos-13
          - target:
              os: windows
            builder: windows-latest

    defaults:
      run:
        shell: bash

    name: '${{ matrix.target.os }}-${{ matrix.target.cpu }}'
    runs-on: ${{ matrix.builder }}
    steps:
      - name: Checkout nimbus-eth1
        uses: actions/checkout@v4

      - name: Derive environment variables
        run: |
          if [[ '${{ matrix.target.cpu }}' == 'amd64' ]]; then
            PLATFORM=x64
          else
            PLATFORM=x86
          fi
          echo "PLATFORM=${PLATFORM}" >> $GITHUB_ENV

          # libminiupnp / natpmp
          if [[ '${{ runner.os }}' == 'Linux' && '${{ matrix.target.cpu }}' == 'i386' ]]; then
            export CFLAGS="${CFLAGS} -m32 -mno-adx"
            echo "CFLAGS=${CFLAGS}" >> $GITHUB_ENV
          fi

          ncpu=''
          case '${{ runner.os }}' in
          'Linux')
            ncpu=$(nproc)
            ;;
          'macOS')
            ncpu=$(sysctl -n hw.ncpu)
            ;;
          'Windows')
            ncpu=${NUMBER_OF_PROCESSORS}
            ;;
          esac
          [[ -z "$ncpu" || $ncpu -le 0 ]] && ncpu=1
          echo "ncpu=${ncpu}" >> $GITHUB_ENV

      - name: Install build dependencies (Linux i386)
        if: runner.os == 'Linux' && matrix.target.cpu == 'i386'
        run: |
          sudo dpkg --add-architecture i386
          sudo apt-fast update -qq
          sudo DEBIAN_FRONTEND='noninteractive' apt-fast install \
            --no-install-recommends -yq gcc-multilib g++-multilib
          mkdir -p external/bin
          cat << EOF > external/bin/gcc
          #!/bin/bash
          exec $(which gcc) -m32 -mno-adx "\$@"
          EOF
          cat << EOF > external/bin/g++
          #!/bin/bash
          exec $(which g++) -m32 -mno-adx "\$@"
          EOF
          chmod 755 external/bin/gcc external/bin/g++
          echo "${{ github.workspace }}/external/bin" >> $GITHUB_PATH

      # Required for running the local testnet script
      - name: Install build dependencies (MacOS)
        if: runner.os == 'macOS'
        run: |
          brew install gnu-getopt
          brew link --force gnu-getopt

      - name: Restore llvm-mingw (Windows) from cache
        if: runner.os == 'Windows'
        id: windows-mingw-cache
        uses: actions/cache@v4
        with:
          path: external/mingw-${{ matrix.target.cpu }}
          key: 'mingw-llvm-17-${{ matrix.target.cpu }}'

      - name: Restore Nim DLLs dependencies (Windows) from cache
        if: runner.os == 'Windows'
        id: windows-dlls-cache
        uses: actions/cache@v4
        with:
          path: external/dlls-${{ matrix.target.cpu }}
          key: 'dlls-${{ matrix.target.cpu }}-fluffy'

      - name: Install llvm-mingw dependency (Windows)
        if: >
          steps.windows-mingw-cache.outputs.cache-hit != 'true' &&
          runner.os == 'Windows'
        run: |
          mkdir -p external
          MINGW_BASE="https://github.com/mstorsjo/llvm-mingw/releases/download/20230905"
          if [[ '${{ matrix.target.cpu }}' == 'amd64' ]]; then
            MINGW_URL="$MINGW_BASE/llvm-mingw-20230905-ucrt-x86_64.zip"
            ARCH=64
          else
            MINGW_URL="$MINGW_BASE/llvm-mingw-20230905-ucrt-x86_64.zip"
            ARCH=32
          fi
          curl -L "$MINGW_URL" -o "external/mingw-${{ matrix.target.cpu }}.zip"
          7z x -y "external/mingw-${{ matrix.target.cpu }}.zip" -oexternal/mingw-${{ matrix.target.cpu }}/
          mv external/mingw-${{ matrix.target.cpu }}/**/* ./external/mingw-${{ matrix.target.cpu }}

      - name: Install DLLs dependencies (Windows)
        if: >
          steps.windows-dlls-cache.outputs.cache-hit != 'true' &&
          runner.os == 'Windows'
        run: |
          DLLPATH=external/dlls-${{ matrix.target.cpu }}
          mkdir -p external
          curl -L "https://nim-lang.org/download/windeps.zip" -o external/windeps.zip
          7z x -y external/windeps.zip -o"$DLLPATH"

      - name: Path to cached dependencies (Windows)
        if: >
          runner.os == 'Windows'
        run: |
          echo '${{ github.workspace }}'"/external/mingw-${{ matrix.target.cpu }}/bin" >> $GITHUB_PATH
          echo '${{ github.workspace }}'"/external/dlls-${{ matrix.target.cpu }}" >> $GITHUB_PATH

      - name: Get latest nimbus-build-system commit hash
        id: versions
        run: |
          getHash() {
            git ls-remote "https://github.com/$1" "${2:-HEAD}" | cut -f 1
          }
          nbsHash=$(getHash status-im/nimbus-build-system)
          echo "nimbus_build_system=$nbsHash" >> $GITHUB_OUTPUT

      - name: Restore prebuilt Nim binaries from cache
        id: nim-cache
        uses: actions/cache@v4
        with:
          path: NimBinaries
          key: 'nim-${{ matrix.target.os }}-${{ matrix.target.cpu }}-${{ steps.versions.outputs.nimbus_build_system }}-fluffy'

      - name: Build Nim and Nimbus-eth1 dependencies
        run: |
          # use CC to make sure Nim compiler and subsequent test
          # using the same glibc version.
          env CC=gcc make -j${ncpu} ARCH_OVERRIDE=${PLATFORM} CI_CACHE=NimBinaries update-from-ci

      - name: Run fluffy tests (Windows)
        if: runner.os == 'Windows'
        run: |
          gcc --version
          DEFAULT_MAKE_FLAGS="-j1"
          mingw32-make ${DEFAULT_MAKE_FLAGS} fluffy
          build/fluffy.exe --help
          find . -type d -name ".git" -exec rm -rf {} +
          rm -rf nimcache
          mingw32-make ${DEFAULT_MAKE_FLAGS} fluffy-tools
          rm -rf nimcache
          mingw32-make ${DEFAULT_MAKE_FLAGS} fluffy-test
          rm -rf nimcache

      - name: Run fluffy tests (Linux)
        if: runner.os == 'Linux'
        run: |
          gcc --version
          ./env.sh nim -v
          ldd --version
          export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/usr/local/lib"
          DEFAULT_MAKE_FLAGS="-j${ncpu}"
          env CC=gcc make ${DEFAULT_MAKE_FLAGS} fluffy
          build/fluffy --help
          env CC=gcc make ${DEFAULT_MAKE_FLAGS} fluffy-tools
          # CC is needed to select correct compiler 32/64 bit
          env CC=gcc CXX=g++ make ${DEFAULT_MAKE_FLAGS} fluffy-test

      - name: Run fluffy tests (Macos)
        if: runner.os == 'Macos'
        run: |
          DEFAULT_MAKE_FLAGS="-j${ncpu}"
          make ${DEFAULT_MAKE_FLAGS} fluffy
          build/fluffy --help
          make ${DEFAULT_MAKE_FLAGS} fluffy-tools
          # "-static" option will not work for osx unless static system libraries are provided
          make ${DEFAULT_MAKE_FLAGS} fluffy-test

      - name: Run fluffy testnet
        run: |
          ./fluffy/scripts/launch_local_testnet.sh --nodes=64 --run-tests

  lint:
    name: "Lint Fluffy"
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 2  # In PR, has extra merge commit: ^1 = PR, ^2 = base

      - name: Check nph formatting
        # Pin nph to a specific version to avoid sudden style differences.
        # Updating nph version should be accompanied with running the new
        # version on the fluffy directory.
        run: |
          VERSION="v0.6.0"
          ARCHIVE="nph-linux_x64.tar.gz"
          curl -L "https://github.com/arnetheduck/nph/releases/download/${VERSION}/${ARCHIVE}" -o ${ARCHIVE}
          tar -xzf ${ARCHIVE}
          ./nph fluffy/
          git diff --exit-code

      - name: Check copyright year
        if: ${{ !cancelled() }} && github.event_name == 'pull_request'
        run: |
          bash scripts/check_copyright_year.sh