#!/bin/sh
#
BASEDIR=`dirname $0`
. ${BASEDIR}/package-build.inc.sh

NANOBSD="$NANO_SRC/tools/tools/nanobsd/nanobsd.sh"

usage() {
cat <<EOF
# Usage $0 <arguments>"
#
# Wrapper around nanobsd.sh with autodetection of already processed steps to
# provide some failsafe net, which avoids building world and/or kernel by
# default.
#
# Rick van der Zwet <rick@wirelessleiden.nl>
#
# Arguments:
# build              - Build NanoBSD parts which are not build yet
# build force kernel - Build NanoBSD and force rebuilding the kernel
# build force world  - Build NanoBSD and force rebuilding world
# rebuild            - Rebuild NanoBSD (aka force rebuilding all)
EOF
}

FORCE_KERNEL=${FORCE_KERNEL:-"no"}
FORCE_WORLD=${FORCE_WORLD:-"no"}

if [ -z "$1" ]; then
  usage; exit 1
elif [ "$1" = "build" ]; then
  if [ -z "$2" ]; then
  elif [ "$2" = "force" ]; then
    if [ "$3" = "kernel" ]; then
      FORCE_KERNEL="yes"
    elif [ "$3" = "world" ]; then
      FORCE_WORLD="yes"
    else
      echo "Argument Error - '$3'"; exit 128
    fi
  else
    echo "Argument Error - '$2'"; exit 128
  fi
elif [ "$1" = "rebuild" ]; then
  FORCE_KERNEL="yes"
  FORCE_WORLD="yes"
else
  echo "Argument Error - '$1'"; exit 128
fi

p_info Forcefully building kernel: $FORCE_KERNEL
p_info Forcefully building world : $FORCE_WORLD

NANOBSD_EXTRA=${NANOBSD_EXTRA:-''}

if [ ! -r "${NANOBSD}" ]; then
  p_err ${NANOBSD} does not exists
  exit 1
fi

if [ ! -x "${NANOBSD}" ]; then
  NANOBSD="sh ${NANOBSD}"
fi

# Find object directory 
OBJDIR="/usr/obj/nanobsd.${NANO_NAME}"

if [ -d "${OBJDIR}" ]; then
  NANOBSD_FLAGS=""
  
  # Detect succesfull buildworld
  tail -10 ${OBJDIR}/_.bw | grep 'World build completed'
  if [ $? -eq 0 -a ${FORCE_WORLD} = "no" ]; then
     p_info NO building of world
     NANOBSD_FLAGS="${NANOBSD_FLAGS} -w"
  fi  

  # Detect succesfull buildkernel
  tail -10 ${OBJDIR}/_.bk | grep 'Kernel build for .* completed'
  if [ $? -eq 0 -a ${FORCE_KERNEL} = "no" ]; then
     p_info NO building of kernel
     NANOBSD_FLAGS="${NANOBSD_FLAGS} -k"
  fi  

else
  p_warn Nothing yet, starting fresh
  NANOBSD_FLAGS=""
fi

# Provide verbose output by default
COMMAND="${NANOBSD} ${NANOBSD_FLAGS} -c ${NANO_CFG_FILE} -v ${NANOBSD_EXTRA}"
f_time ${COMMAND}
RETVAL=$?

# Verify on build failures
tail -10 ${OBJDIR}/_.bw | grep 'World build completed'
if [ $? -eq 1 ]; then
  p_err Building world FAILED, check ${OBJDIR}/_.bw
fi
tail -10 ${OBJDIR}/_.bk | grep 'Kernel build for .* completed'
if [ $? -eq 1 ]; then
  p_err Building kernel FAILED, check ${OBJDIR}/_.bk
fi  
if [ $RETVAL -ne 0 ]; then
  p_err "Errors in building NanoBSD Image ($RETVAL)"
fi
p_info End time: `date`
exit ${RETVAL}