#!/bin/bash
if [ -z "$1" ]; then
 echo 'usage: ./configure <python[version]> {optional: <--no-compile>}'
 exit 1
fi

if [ -n "$2" ] && [[ "$2" != *--no-compile* ]]; then
 echo 'usage: ./configure <python[version]> {optional: <--no-compile>}'
 exit 1
fi

echo -e 'checking dependencies: '
echo -ne "	checking for python as <$1>..."
if which `which "$1"` >/dev/null; then
 PYPATH=`which "$1"`
 echo -ne ' OK'
 echo
else
 echo -ne ' FAILED'
 echo
 exit 1
fi

echo -ne '	checking for man...'
if which man >/dev/null; then
 echo -ne ' OK'
 echo
else
 echo -ne ' FAILED'
 echo
 exit 1
fi

if [ -z "$2" ]; then
 echo -ne '	checking for cython...'
 if which cython >/dev/null; then
  echo -ne ' OK'
  echo
 else
  echo -ne ' FAILED'
  echo
  exit 1
 fi
fi

if [ -z "$2" ]; then
 echo -ne '	checking for gcc...'
 if which gcc >/dev/null; then
  echo -ne ' OK'
  echo
 else
  echo -ne ' FAILED'
  echo
  exit 1
 fi
fi

echo
echo  -ne "configuring splicex: "
echo
echo -e "	python version == $1"
echo -e "	interpreter path == $PYPATH"
if [ -z "$2" ]; then
 if [ -e /usr/include/"$1"/Python.h ] && [ -e /usr/include/"$1"/structmember.h ]; then
  PYHEADERS="/usr/include/$1"
  echo -e "	compiler flags == gcc -I /usr/include/$1"
 elif [ -e /usr/local/include/"$1"/Python.h ] && [ -e /usr/local/include/"$1"/structmember.h ]; then
  PYHEADERS="/usr/local/include/$1"
  echo -e "	compiler flags == gcc -I /usr/local/include/$1"
 else
  echo -e "	Python.h and structmember.h could not be found... FAILED"
  echo
  exit 1
 fi
fi
echo
mkdir -p build || exit 1
if [ -z "$2" ]; then
 sed -e s^PYTHON^"$PYPATH"^g src/splicex.py >build/splicex || exit 1
 sed -e s^PYTHON^"$PYPATH"^g src/splicex-deshadow.py >build/splicex-deshadow || exit 1
fi
sed -e s^PYTHON^"$PYPATH"^g src/splicex.pyx >build/splicex.pyx || exit 1
sed -e s^PYTHON^"$PYPATH"^g src/deshadow.pyx >build/deshadow.pyx || exit 1
echo -ne "	generating Makefile..."
if [ -z "$2" ]; then
 sed -e s^PYTHON^"$1"^g src/make.in >Makefile || exit 1
 sed -i s^HEADERS^"$PYHEADERS"^g Makefile || exit 1
 echo -ne ' DONE'
 echo
else
 sed -e s^PYTHON^"$1"^g src/pymake.in >Makefile || exit 1
 echo -ne ' DONE'
 echo
fi
echo
echo -e 'splicex configured'