#!/usr/bin/env bash
# tools/configure.sh
#
#   Copyright (C) 2007, 2008, 2011, 2015, 2017-2019 Gregory Nutt. All rights
#     reserved.
#   Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
#    used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

WD=`test -d ${0%/*} && cd ${0%/*}; pwd`
TOPDIR="${WD}/.."
USAGE="

USAGE: ${0} [-d] [-s] [-l|m|c|u|g|n] [-a <app-dir>] <board-name>:<config-name>

Where:
  -s Skip the .config/Make.defs existence check
  -l selects the Linux (l) host environment.
  -m selects the macOS (m) host environment.
  -c selects the Windows host and Cygwin (c) environment.
  -u selects the Windows host and Ubuntu under Windows 10 (u) environment.
  -g selects the Windows host and MinGW/MSYS environment.
  -n selects the Windows host and Windows native (n) environment.
  Default: Use host setup in the defconfig file
  Default Windows: Cygwin
  <board-name> is the name of the board in the boards directory
  configs/<config-name> is the name of the board configuration sub-directory
  <app-dir> is the path to the apps/ directory, relative to the nuttx
     directory

"

# A list of optional files that may be installed

OPTFILES="\
  .gdbinit\
  .cproject\
  .project\
"

# Parse command arguments

unset boardconfig
unset appdir
unset host
unset wenv
debug=n
skip=0

while [ ! -z "$1" ]; do
  case "$1" in
    -a )
      shift
      appdir=$1
      ;;
    -c )
      host=windows
      wenv=cygwin
      ;;
    -d )
      debug=y
      set -x
      ;;
    -g )
      host=windows
      wenv=msys
      ;;
    -h )
      echo "$USAGE"
      exit 0
      ;;
    -l )
      host=linux
      ;;
    -m )
      host=macos
      ;;
    -n )
      host=windows
      wenv=native
      ;;
    -s )
      skip=1
      ;;
    -u )
      host=windows
      wenv=ubuntu
      ;;
    *)
      if [ ! -z "${boardconfig}" ]; then
        echo ""
        echo "<board/config> defined twice"
        echo "$USAGE"
        exit 1
      fi
      boardconfig=$1
      ;;
  esac
  shift
done

# Sanity checking

if [ -z "${boardconfig}" ]; then
  echo ""
  echo "Missing <board/config> argument"
  echo "$USAGE"
  exit 2
fi

configdir=`echo ${boardconfig} | cut -s -d':' -f2`
if [ -z "${configdir}" ]; then
  boarddir=`echo ${boardconfig} | cut -d'/' -f1`
  configdir=`echo ${boardconfig} | cut -d'/' -f2`
else
  boarddir=`echo ${boardconfig} | cut -d':' -f1`
fi

# Detect the architecture of this board.

archs="arm avr hc mips misoc or1k renesas risc-v sim x86 xtensa z16 z80"
chips="a1x am335x c5471 cxd56xx dm320 efm32 imx6 imxrt kinetis kl lc823450
 lpc17xx_40xx lpc214x lpc2378 lpc31xx lpc43xx lpc54xx max326xx moxart nrf52
 nuc1xx rx65n s32k1xx sam34 sama5 samd2l2 samd5e5 samv7 stm32 stm32f0l0g0 stm32f7 stm32h7
 stm32l4 str71x tiva tms570 xmc4 at32uc3 at90usb atmega mcs92s12ne64 pic32mx
 pic32mz lm32 mor1kx m32262f8 sh7032 fe310 gap8 nr5m100 sim qemu esp32 z16f2811
 ez80 z180 z8 z80"

for arc in ${archs}; do
for chip in ${chips}; do
  if [ -f ${TOPDIR}/boards/${arc}/${chip}/${boarddir}/Kconfig ]; then
    archdir=${arc}
    chipdir=${chip}
    echo "  Detected ${archdir} Architecture"
    echo "  Detected ${chipdir} Chip"
  fi
done
done

configpath=${TOPDIR}/boards/${archdir}/${chipdir}/${boarddir}/configs/${configdir}
if [ ! -d "${configpath}" ]; then
  # Try direct path used with custom configurations.

  configpath=${TOPDIR}/${boardconfig}
  if [ ! -d "${configpath}" ]; then
    echo "Directory for ${boardconfig} does not exist.  Options are:"
    echo ""
    echo "Select one of the following options for <board-name>:"
    configlist=`find ${TOPDIR}/boards -name defconfig`
    for defconfig in ${configlist}; do
      config=`dirname ${defconfig} | sed -e "s,${TOPDIR}/boards/,,g"`
      boardname=`echo ${config} | cut -d'/' -f3`
      configname=`echo ${config} | cut -d'/' -f5`
      echo "  ${boardname}:${configname}"
    done
    echo ""
    echo "$USAGE"
    exit 3
  fi
fi

src_makedefs="${TOPDIR}/boards/${archdir}/${chipdir}/${boarddir}/configs/${configdir}/Make.defs"
dest_makedefs="${TOPDIR}/Make.defs"

if [ ! -r "${src_makedefs}" ]; then
  src_makedefs="${TOPDIR}/boards/${archdir}/${chipdir}/${boarddir}/scripts/Make.defs"

  if [ ! -r "${src_makedefs}" ]; then
    src_makedefs="${TOPDIR}/${boardconfig}/Make.defs"
    if [ ! -r "${src_makedefs}" ]; then
      echo "File Make.defs could not be found"
      exit 4
    fi
  fi
fi

src_config="${configpath}/defconfig"
dest_config="${TOPDIR}/.config"

if [ ! -r "${src_config}" ]; then
  echo "File \"${src_config}\" does not exist"
  exit 5
fi

if [ ${skip} != 1 ] && [ -r ${dest_config} ]; then
  echo "Already configured!"
  echo "Do 'make distclean' and try again."
  exit 6
fi

# Extract values needed from the defconfig file.  We need:
# (1) The CONFIG_WINDOWS_NATIVE setting to know it this is target for a
#     native Windows
# (2) The CONFIG_APPS_DIR setting to see if there is a configured location for the
#     application directory.  This can be overridden from the command line.

# If we are going to some host other then windows native or to a windows
# native host, then don't even check what is in the defconfig file.

oldnative=`grep CONFIG_WINDOWS_NATIVE= "${src_config}" | cut -d'=' -f2`
if [ "X$host" != "Xwindows" -o "X$wenv" != "Xnative" ]; then
  unset winnative
else
  if [ "X$host" == "Xwindows" -a "X$wenv" == "Xnative" ]; then
    winnative=y
  else
    winnative=$oldnative
  fi
fi

# If no application directory was provided on the command line and we are
# switching between a windows native host and some other host then ignore the
# path to the apps/ directory in the defconfig file.  It will most certainly
# not be in a usable form.

defappdir=y
if [ -z "${appdir}" -a "X$oldnative" = "$winnative" ]; then
  quoted=`grep "^CONFIG_APPS_DIR=" "${src_config}" | cut -d'=' -f2`
  if [ ! -z "${quoted}" ]; then
    appdir=`echo ${quoted} | sed -e "s/\"//g"`
    defappdir=n
  fi
fi

# Check for the apps/ directory in the usual place if appdir was not provided

if [ -z "${appdir}" ]; then

  # Check for a version file

  unset CONFIG_VERSION_STRING
  if [ -x "${TOPDIR}/.version" ]; then
    . "${TOPDIR}/.version"
  fi

  # Check for an unversioned apps/ directory

  if [ -d "${TOPDIR}/../apps" ]; then
    appdir="../apps"
  else
    # Check for a versioned apps/ directory

    if [ -d "${TOPDIR}/../apps-${CONFIG_VERSION_STRING}" ]; then
      appdir="../apps-${CONFIG_VERSION_STRING}"
    fi
  fi
fi

# For checking the apps dir path, we need a POSIX version of the relative path.

posappdir=`echo "${appdir}" | sed -e 's/\\\\/\\//g'`
winappdir=`echo "${appdir}" | sed -e 's/\\//\\\\\\\/g'`

# If appsdir was provided (or discovered) then make sure that the apps/
# directory exists

if [ ! -z "${appdir}" -a ! -d "${TOPDIR}/${posappdir}" ]; then
  echo "Directory \"${TOPDIR}/${posappdir}\" does not exist"
  exit 7
fi

# Okay... Everything looks good.  Setup the configuration

echo "  Copy files"
install -m 644 "${src_makedefs}" "${dest_makedefs}" || \
  { echo "Failed to copy \"${src_makedefs}\"" ; exit 8 ; }
install -m 644 "${src_config}" "${dest_config}" || \
  { echo "Failed to copy \"${src_config}\"" ; exit 9 ; }

# Install any optional files

for opt in ${OPTFILES}; do
  test -f "${configpath}/${opt}" && install "${configpath}/${opt}" "${TOPDIR}/"
done

# If we did not use the CONFIG_APPS_DIR that was in the defconfig config file,
# then append the correct application information to the tail of the .config
# file

if [ "X${defappdir}" = "Xy" ]; then
  # In-place edit can mess up permissions on Windows
  # sed -i -e "/^CONFIG_APPS_DIR/d" "${dest_config}"
  sed -e "/^CONFIG_APPS_DIR/d" "${dest_config}" > "${dest_config}-temp"
  mv "${dest_config}-temp" "${dest_config}"

  if [ "X${winnative}" = "Xy" ]; then
    echo "CONFIG_APPS_DIR=\"$winappdir\"" >> "${dest_config}"
  else
    echo "CONFIG_APPS_DIR=\"$posappdir\"" >> "${dest_config}"
  fi
fi

if [ ! -z "$host" ]; then
  sed -i -e "/CONFIG_HOST_LINUX/d" ${dest_config}
  sed -i -e "/CONFIG_HOST_WINDOWS/d" ${dest_config}
  sed -i -e "/CONFIG_HOST_MACOS/d" ${dest_config}
  sed -i -e "/CONFIG_HOST_OTHER/d" ${dest_config}
  sed -i -e "/CONFIG_WINDOWS_NATIVE/d" ${dest_config}
  sed -i -e "/CONFIG_WINDOWS_CYGWIN/d" ${dest_config}
  sed -i -e "/CONFIG_WINDOWS_MSYS/d" ${dest_config}
  sed -i -e "/CONFIG_WINDOWS_UBUNTU/d" ${dest_config}
  sed -i -e "/CONFIG_WINDOWS_OTHER/d" ${dest_config}
  sed -i -e "/CONFIG_SIM_X8664_MICROSOFT/d" ${dest_config}
  sed -i -e "/CONFIG_SIM_X8664_SYSTEMV/d" ${dest_config}

  case "$host" in
    "linux")
      echo "  Select CONFIG_HOST_LINUX=y"
      echo "CONFIG_HOST_LINUX=y" >> "${dest_config}"
      echo "CONFIG_SIM_X8664_SYSTEMV=y" >> "${dest_config}"
      ;;

    "macos")
      echo "  Select CONFIG_HOST_MACOS=y"
      echo "CONFIG_HOST_MACOS=y" >> "${dest_config}"
      ;;

    "windows")
      echo "  Select CONFIG_HOST_WINDOWS=y"
      echo "CONFIG_HOST_WINDOWS=y" >> "${dest_config}"
      echo "CONFIG_SIM_X8664_MICROSOFT=y" >> "${dest_config}"

      case "$wenv" in
          "cygwin")
            echo "  Select CONFIG_WINDOWS_CYGWIN=y"
            echo "CONFIG_WINDOWS_CYGWIN=y" >> "${dest_config}"
            ;;

          "msys")
            echo "  Select CONFIG_WINDOWS_MSYS=y"
            echo "CONFIG_WINDOWS_MSYS=y" >> "${dest_config}"
            ;;

          "ubuntu")
            echo "  Select CONFIG_WINDOWS_UBUNTU=y"
            echo "CONFIG_WINDOWS_UBUNTU=y" >> "${dest_config}"
            ;;

          *)
            echo "  Select CONFIG_WINDOWS_NATIVE=y"
            echo "CONFIG_WINDOWS_NATIVE=y" >> "${dest_config}"
            ;;
      esac
  esac
fi

# The saved defconfig files are all in compressed format and must be
# reconstitued before they can be used.

echo "  Refreshing..."
cd ${TOPDIR} || { echo "Failed to cd to ${TOPDIR}"; exit 10; }

MAKE_BIN=make
if [ ! -z `which gmake 2>/dev/null` ]; then
  MAKE_BIN=gmake
fi

if [ "X${debug}" = "Xy" ]; then
  ${MAKE_BIN} olddefconfig V=1
else
  ${MAKE_BIN} olddefconfig 1>/dev/null
fi