#!/usr/bin/env bash

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#  http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

# Prerequisites for macOS
#  - Xcode (cc, etc)
#  - homebrew
#  - autoconf
#  - wget

set -e
set -o xtrace

WD=$(cd "$(dirname "$0")" && pwd)
WORKSPACE=$(cd "${WD}"/../../../ && pwd -P)
nuttx=${WORKSPACE}/nuttx
apps=${WORKSPACE}/apps
tools=${WORKSPACE}/tools
prebuilt=${WORKSPACE}/prebuilt
os=$(uname -s)
EXTRA_PATH=

case ${os} in
  Darwin)
    install="python-tools u-boot-tools elf-toolchain gen-romfs kconfig-frontends arm-gcc-toolchain riscv-gcc-toolchain xtensa-esp32-gcc-toolchain avr-gcc-toolchain c-cache binutils"
    mkdir -p "${prebuilt}"/homebrew
    export HOMEBREW_CACHE=${prebuilt}/homebrew
    # https://github.com/actions/virtual-environments/issues/2322#issuecomment-749211076
    rm -rf /usr/local/bin/2to3
    # https://github.com/osx-cross/homebrew-avr/issues/205#issuecomment-760637996
    brew update --quiet
    ;;
  Linux)
    install="python-tools gen-romfs gperf kconfig-frontends arm-gcc-toolchain mips-gcc-toolchain riscv-gcc-toolchain xtensa-esp32-gcc-toolchain rx-gcc-toolchain c-cache"
    ;;
esac

function add_path {
  PATH=$1:${PATH}
  EXTRA_PATH=$1:${EXTRA_PATH}
}

function python-tools {
  # Python User Env
  PIP_USER=yes
  export PIP_USER
  PYTHONUSERBASE=${prebuilt}/pylocal
  export PYTHONUSERBASE
  add_path "${PYTHONUSERBASE}"/bin
  pip3 install pexpect

  # MCUboot's tool for image signing and key management
  if ! command -v imgtool &> /dev/null; then
    pip3 install imgtool
  fi
}

function u-boot-tools {
  if ! type mkimage &> /dev/null; then
    case ${os} in
      Darwin)
        brew install u-boot-tools
        ;;
    esac
  fi
}

function elf-toolchain {
  if ! type x86_64-elf-gcc &> /dev/null; then
    case ${os} in
      Darwin)
        brew install x86_64-elf-gcc
        ;;
    esac
  fi
  x86_64-elf-gcc --version
}

function gen-romfs {
  add_path "${prebuilt}"/genromfs/usr/bin

  if [ ! -f "${prebuilt}/genromfs/usr/bin/genromfs" ]; then
    if [ ! -d "${tools}" ]; then
      git clone https://bitbucket.org/nuttx/tools.git "${tools}"
    fi
    mkdir -p "${prebuilt}"; cd "${tools}"
    tar zxf genromfs-0.5.2.tar.gz -C "${prebuilt}"
    cd "${prebuilt}"/genromfs-0.5.2
    make install PREFIX="${prebuilt}"/genromfs
    cd "${prebuilt}"
    rm -rf genromfs-0.5.2
  fi
}

function gperf {
  add_path "${prebuilt}"/gperf/bin

  if [ ! -f "${prebuilt}/gperf/bin/gperf" ]; then
    cd "${prebuilt}"
    wget --quiet http://ftp.gnu.org/pub/gnu/gperf/gperf-3.1.tar.gz
    tar zxf gperf-3.1.tar.gz
    cd "${prebuilt}"/gperf-3.1
    ./configure --prefix="${prebuilt}"/gperf; make; make install
    cd "${prebuilt}"
    rm -rf gperf-3.1; rm gperf-3.1.tar.gz
  fi
}

function kconfig-frontends {
  add_path "${prebuilt}"/kconfig-frontends/bin

  if [ ! -f "${prebuilt}/kconfig-frontends/bin/kconfig-conf" ]; then
    cd "${tools}"/kconfig-frontends
    ./configure --prefix="${prebuilt}"/kconfig-frontends \
      --disable-kconfig --disable-nconf --disable-qconf \
      --disable-gconf --disable-mconf --disable-static \
      --disable-shared --disable-L10n
    # Avoid "aclocal/automake missing" errors
    touch aclocal.m4 Makefile.in
    make install
    cd "${tools}"; git clean -xfd
  fi
}

function bloaty {
  add_path "${prebuilt}"/bloaty/bin
  if [ ! -f "${prebuilt}/bloaty/bin/bloaty" ]; then
    git clone --depth 1 --branch v1.1 https://github.com/google/bloaty bloaty-src
    cd bloaty-src
    mkdir -p "${prebuilt}"/bloaty
    cmake -DCMAKE_SYSTEM_PREFIX_PATH="${prebuilt}"/bloaty
    make install -j 6
    cd "${prebuilt}"
    rm -rf bloaty-src
  fi
}

function arm-gcc-toolchain {
  add_path "${prebuilt}"/gcc-arm-none-eabi/bin

  if [ ! -f "${prebuilt}/gcc-arm-none-eabi/bin/arm-none-eabi-gcc" ]; then
    local flavor
    case ${os} in
      Darwin)
        flavor=mac
        ;;
      Linux)
        flavor=x86_64-linux
        ;;
    esac
    cd "${prebuilt}"
    wget --quiet https://developer.arm.com/-/media/Files/downloads/gnu-rm/9-2019q4/RC2.1/gcc-arm-none-eabi-9-2019-q4-major-${flavor}.tar.bz2
    tar jxf gcc-arm-none-eabi-9-2019-q4-major-${flavor}.tar.bz2
    mv gcc-arm-none-eabi-9-2019-q4-major gcc-arm-none-eabi
    rm gcc-arm-none-eabi-9-2019-q4-major-${flavor}.tar.bz2
  fi
  arm-none-eabi-gcc --version
}

function mips-gcc-toolchain {
  add_path "${prebuilt}"/pinguino-compilers/linux64/p32/bin

  if [ ! -f "${prebuilt}/pinguino-compilers/linux64/p32/bin/p32-gcc" ]; then
    cd "${prebuilt}"
    git clone https://github.com/PinguinoIDE/pinguino-compilers
  fi
  p32-gcc --version
}

function riscv-gcc-toolchain {
  add_path "${prebuilt}"/riscv64-unknown-elf-gcc/bin

  if [ ! -f "${prebuilt}/riscv64-unknown-elf-gcc/bin/riscv64-unknown-elf-gcc" ]; then
    local flavor
    case ${os} in
      Darwin)
        flavor=x86_64-apple-darwin
        ;;
      Linux)
        flavor=x86_64-linux-ubuntu14
        ;;
    esac
    cd "${prebuilt}"
    wget --quiet https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.3.0-2019.08.0-${flavor}.tar.gz
    tar zxf riscv64-unknown-elf-gcc-8.3.0-2019.08.0-${flavor}.tar.gz
    mv riscv64-unknown-elf-gcc-8.3.0-2019.08.0-${flavor} riscv64-unknown-elf-gcc
    rm riscv64-unknown-elf-gcc-8.3.0-2019.08.0-${flavor}.tar.gz
  fi
  riscv64-unknown-elf-gcc --version
}

function xtensa-esp32-gcc-toolchain {
  add_path "${prebuilt}"/xtensa-esp32-elf/bin

  if [ ! -f "${prebuilt}/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc" ]; then
    cd "${prebuilt}"
    case ${os} in
      Darwin)
        wget --quiet https://dl.espressif.com/dl/xtensa-esp32-elf-gcc8_4_0-esp-2021r1-macos.tar.gz
        tar xzf xtensa-esp32-elf-gcc8_4_0-esp-2021r1-macos.tar.gz
        rm xtensa-esp32-elf-gcc8_4_0-esp-2021r1-macos.tar.gz
        ;;
      Linux)
        wget --quiet https://dl.espressif.com/dl/xtensa-esp32-elf-gcc8_4_0-esp32-2021r1-linux-amd64.tar.xz
        xz -d xtensa-esp32-elf-gcc8_4_0-esp32-2021r1-linux-amd64.tar.xz
        tar xf xtensa-esp32-elf-gcc8_4_0-esp32-2021r1-linux-amd64.tar
        rm xtensa-esp32-elf-gcc8_4_0-esp32-2021r1-linux-amd64.tar
        ;;
    esac
  fi
  xtensa-esp32-elf-gcc --version
  pip3 install esptool
}

function avr-gcc-toolchain {
  if ! type avr-gcc &> /dev/null; then
    case ${os} in
      Darwin)
        brew tap osx-cross/avr
        brew install avr-gcc
        ;;
    esac
  fi
}

function rx-gcc-toolchain {
  add_path "${prebuilt}"/renesas-toolchain/rx-elf-gcc/bin

  if [ ! -f "${prebuilt}/renesas-toolchain/rx-elf-gcc/bin/rx-elf-gcc" ]; then
    case ${os} in
      Linux)
        # Download toolchain source code
        # RX toolchain is built from source code. Once prebuilt RX toolchain is made available, the below code snippet can be removed.
        mkdir -p "${prebuilt}"/renesas-tools/rx/source; cd "${prebuilt}"/renesas-tools/rx/source
        wget --quiet https://gcc-renesas.com/downloads/d.php?f=rx/binutils/4.8.4.201803-gnurx/rx_binutils2.24_2018Q3.tar.gz \
          -O rx_binutils2.24_2018Q3.tar.gz
        tar zxf rx_binutils2.24_2018Q3.tar.gz
        wget --quiet https://gcc-renesas.com/downloads/d.php?f=rx/gcc/4.8.4.201803-gnurx/rx_gcc_4.8.4_2018Q3.tar.gz \
          -O rx_gcc_4.8.4_2018Q3.tar.gz
        tar zxf rx_gcc_4.8.4_2018Q3.tar.gz
        wget --quiet https://gcc-renesas.com/downloads/d.php?f=rx/newlib/4.8.4.201803-gnurx/rx_newlib2.2.0_2018Q3.tar.gz \
          -O rx_newlib2.2.0_2018Q3.tar.gz
        tar zxf rx_newlib2.2.0_2018Q3.tar.gz

        # Install binutils
        cd "${prebuilt}"/renesas-tools/rx/source/binutils; chmod +x ./configure ./mkinstalldirs
        mkdir -p "${prebuilt}"/renesas-tools/rx/build/binutils; cd "${prebuilt}"/renesas-tools/rx/build/binutils
        "${prebuilt}"/renesas-tools/rx/source/binutils/configure --target=rx-elf --prefix="${prebuilt}"/renesas-toolchain/rx-elf-gcc \
          --disable-werror
        make; make install

        # Install gcc
        cd "${prebuilt}"/renesas-tools/rx/source/gcc
        chmod +x ./contrib/download_prerequisites ./configure ./move-if-change ./libgcc/mkheader.sh
        ./contrib/download_prerequisites
        sed -i '1s/^/@documentencoding ISO-8859-1\n/' ./gcc/doc/gcc.texi
        sed -i 's/@tex/\n&/g' ./gcc/doc/gcc.texi && sed -i 's/@end tex/\n&/g' ./gcc/doc/gcc.texi
        mkdir -p "${prebuilt}"/renesas-tools/rx/build/gcc; cd "${prebuilt}"/renesas-tools/rx/build/gcc
        "${prebuilt}"/renesas-tools/rx/source/gcc/configure --target=rx-elf --prefix="${prebuilt}"/renesas-toolchain/rx-elf-gcc \
        --disable-shared --disable-multilib --disable-libssp --disable-libstdcxx-pch --disable-werror --enable-lto \
        --enable-gold --with-pkgversion=GCC_Build_1.02 --with-newlib --enable-languages=c
        make; make install

        # Install newlib
        cd "${prebuilt}"/renesas-tools/rx/source/newlib; chmod +x ./configure
        mkdir -p "${prebuilt}"/renesas-tools/rx/build/newlib; cd "${prebuilt}"/renesas-tools/rx/build/newlib
        "${prebuilt}"/renesas-tools/rx/source/newlib/configure --target=rx-elf --prefix="${prebuilt}"/renesas-toolchain/rx-elf-gcc
        make; make install
        rm -rf "${prebuilt}"/renesas-tools/
        ;;
    esac
  fi
  rx-elf-gcc --version
}

function c-cache {
  add_path "${prebuilt}"/ccache/bin

  if ! type ccache &> /dev/null; then
    case ${os} in
      Darwin)
        brew install ccache
        ;;
      Linux)
        cd "${prebuilt}";
        wget https://github.com/ccache/ccache/releases/download/v3.7.7/ccache-3.7.7.tar.gz
        tar zxf ccache-3.7.7.tar.gz
        cd ccache-3.7.7; ./configure --prefix="${prebuilt}"/ccache; make; make install
        cd "${prebuilt}"; rm -rf ccache-3.7.7; rm ccache-3.7.7.tar.gz
        ;;
    esac
  fi

  ccache --version
  mkdir -p "${prebuilt}"/ccache/bin/
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/x86_64-elf-gcc
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/x86_64-elf-g++
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/cc
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/c++
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/clang
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/clang++
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/gcc
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/g++
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/arm-none-eabi-gcc
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/arm-none-eabi-g++
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/p32-gcc
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/riscv64-unknown-elf-gcc
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/riscv64-unknown-elf-g++
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/xtensa-esp32-elf-gcc
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/avr-gcc
  ln -sf "$(which ccache)" "${prebuilt}"/ccache/bin/avr-g++
}

function binutils {
  mkdir -p "${prebuilt}"/bintools/bin
  add_path "${prebuilt}"/bintools/bin

  if ! type objcopy &> /dev/null; then
    case ${os} in
      Darwin)
        brew install binutils
        # It is possible we cached prebuilt but did brew install so recreate
        # symlink if it exists
        rm -f "${prebuilt}"/bintools/bin/objcopy
        ln -s /usr/local/opt/binutils/bin/objcopy "${prebuilt}"/bintools/bin/objcopy
        ;;
    esac
  fi
}

function usage {
  echo ""
  echo "USAGE: $0 [-i] [-s] [-c] [-*] <testlist>"
  echo "       $0 -h"
  echo ""
  echo "Where:"
  echo "  -i install tools"
  echo "  -s setup repos"
  echo "  -c enable ccache"
  echo "  -* support all options in testbuild.sh"
  echo "  -h will show this help test and terminate"
  echo "  <testlist> select testlist file"
  echo ""
  exit 1
}

function enable_ccache {
  export USE_CCACHE=1;
  ccache -z
  ccache -M 5G;
  ccache -s
}

function setup_repos {
  pushd .
  if [ -d "${nuttx}" ]; then
    cd "${nuttx}"; git pull
  else
    git clone https://github.com/apache/incubator-nuttx.git "${nuttx}"
    cd "${nuttx}"
  fi
  git log -1

  if [ -d "${apps}" ]; then
    cd "${apps}"; git pull
  else
    git clone https://github.com/apache/incubator-nuttx-apps.git "${apps}"
    cd "${apps}"
  fi
  git log -1
  popd
}

function install_tools {
  pushd .
  for func in ${install}; do
    ${func}
  done
  popd

  echo PATH="${EXTRA_PATH}"/"${PATH}" > "${prebuilt}"/env.sh
}

function run_builds {
  local ncpus

  case ${os} in
    Darwin)
      ncpus=$(sysctl -n hw.ncpu)
      ;;
    Linux)
      ncpus=$(grep -c ^processor /proc/cpuinfo)
      ;;
  esac

  options+="-j ${ncpus}"

  for build in "${builds[@]}"; do
    "${nuttx}"/tools/testbuild.sh ${options} -e "-Wno-cpp -Werror" "${build}"
  done
}

if [ -z "$1" ]; then
   usage
fi

while [ -n "$1" ]; do
  case "$1" in
  -h )
    usage
    ;;
  -i )
    install_tools
    ;;
  -c )
    enable_ccache
    ;;
  -s )
    setup_repos
    ;;
  -* )
    options+="$1 "
    ;;
  * )
    builds=( "$@" )
    break
    ;;
  esac
  shift
done

run_builds