AC_INIT(etc/configuration.xml.in)

PACKAGE=helm_configuration

HELM_MAJOR_VERSION=0
HELM_MINOR_VERSION=0
HELM_MICRO_VERSION=2
HELM_VERSION=$HELM_MAJOR_VERSION.$HELM_MINOR_VERSION.$HELM_MICRO_VERSION
VERSION=$HELM_VERSION

DEFAULT_HELM_VAR_DIR=/var/local/helm
DEFAULT_HELM_TMP_DIR=/tmp

AC_ARG_ENABLE(
	defaults,
	[  --enable-defaults[=ARG] if yes then use defaults (don't ask user) [default=auto]],
	USE_DEFAULTS=$enableval,
	USE_DEFAULTS=auto
)

if test "x$prefix" != xNONE; then
  RESOLVED_PREFIX=$prefix
else
  RESOLVED_PREFIX=$ac_default_prefix
fi

if test "x$exec_prefix" != xNONE; then
  RESOLVED_EXEC_PREFIX=$exec_prefix
else
  RESOLVED_EXEC_PREFIX=$RESOLVED_PREFIX
fi

dnl General
HELM_BIN_DIR=$RESOLVED_EXEC_PREFIX/bin
HELM_LIB_DIR=$RESOLVED_EXEC_PREFIX/lib/helm
HELM_ETC_DIR=$RESOLVED_PREFIX/etc/helm
HELM_SHARE_DIR=$RESOLVED_PREFIX/share/helm

dnl Checking for the variable directory
if test $USE_DEFAULTS != yes; then
	echo
	echo "Now you have to choose a suitable directory for variable files."
	echo "Normally, this directory would be something like /var/local/helm, you"
	echo "have to be sure that the directory (and the subdirectories in it)"
	echo "is world-writable."
	echo
	echo -n "[[$DEFAULT_HELM_VAR_DIR]] ? "
	read HELM_VAR_DIR
	echo
	if test x$HELM_VAR_DIR = x; then
		HELM_VAR_DIR="/var/local/helm"
	fi
else
	HELM_VAR_DIR=$DEFAULT_HELM_VAR_DIR
fi

AC_MSG_CHECKING(for HELM variable dir)
AC_MSG_RESULT($HELM_VAR_DIR)

dnl Checking for the /tmp directory
DEFAULTS=$USE_DEFAULTS
if test $DEFAULTS = auto; then
	if test -d $DEFAULT_HELM_TMP_DIR ; then
		HELM_TMP_DIR=$DEFAULT_HELM_TMP_DIR
	else
		DEFAULTS=no
	fi
fi

if test $DEFAULTS = no; then
	echo
	echo "Please, tell me the name of a directory which can be used to store"
	echo "temporary files (normally it is something like /tmp)"
	echo
	echo -n "[[$DEFAULT_HELM_TMP_DIR]]"
	read HELM_TMP_DIR
	echo
	if test x$HELM_TMP_DIR = x; then
		HELM_TMP_DIR=$DEFAULT_HELM_TMP_DIR
	fi
else
	HELM_TMP_DIR=$DEFAULT_HELM_TMP_DIR
fi

AC_MSG_CHECKING(for $HELM_TMP_DIR)
if test ! -d $HELM_TMP_DIR; then
	AC_MSG_RESULT(no)
	AC_MSG_ERROR(please check your installation)
fi
AC_MSG_RESULT(ok)

dnl Checks for GtkMathView
AC_CHECK_PROG(HAVE_GTKMATHVIEW_CONFIG, gtkmathview-config, yes, no)
if test $HAVE_GTKMATHVIEW_CONFIG = no; then
   AC_MSG_ERROR(Could not find gtkmathview-config)
fi
GTKMATHVIEW_PREFIX=`gtkmathview-config --prefix`

AC_CACHE_CHECK(
  for dictionary.xml,
  helm_cv_GTKMATHVIEW_DICTIONARY_PATH,
  helm_cv_GTKMATHVIEW_DICTIONARY_PATH=$GTKMATHVIEW_PREFIX/share/gtkmathview/dictionary.xml
  if test ! -f $helm_cv_GTKMATHVIEW_DICTIONARY_PATH; then
    read helm_cv_GTKMATHVIEW_DICTIONARY_PATH
  fi
)
GTKMATHVIEW_DICTIONARY_PATH=$helm_cv_GTKMATHVIEW_DICTIONARY_PATH

AC_CACHE_CHECK(
  for font-configuration.xml,
  helm_cv_GTKMATHVIEW_FONT_CONFIGURATION_PATH,
  helm_cv_GTKMATHVIEW_FONT_CONFIGURATION_PATH=$GTKMATHVIEW_PREFIX/share/gtkmathview/font-configuration.xml
  if test ! -f $helm_cv_GTKMATHVIEW_FONT_CONFIGURATION_PATH; then
    read helm_cv_GTKMATHVIEW_FONT_CONFIGURATION_PATH
  fi
)
GTKMATHVIEW_FONT_CONFIGURATION_PATH=$helm_cv_GTKMATHVIEW_FONT_CONFIGURATION_PATH

AC_CACHE_CHECK(
  for t1lib configuration file,
    helm_cv_GTKMATHVIEW_T1_CONFIG_FILE,
    helm_cv_GTKMATHVIEW_T1_CONFIG_FILE=$GTKMATHVIEW_PREFIX/share/gtkmathview/t1.config
    if test ! -f $helm_cv_GTKMATHVIEW_T1_CONFIG_FILE; then
      read GTKMATHVIEW_T1_CONFIG_FILE
    fi
)
GTKMATHVIEW_T1_CONFIG_FILE=$helm_cv_GTKMATHVIEW_T1_CONFIG_FILE

HELM_DICTIONARY_PATH=$HELM_ETC_DIR/helm-dictionary.xml
HELM_FONT_CONFIGURATION_PATH=$HELM_ETC_DIR/helm-font-configuration.xml

dnl Only for HELM XML configuration
HELM_LIBRARY_DIR=$HELM_VAR_DIR/library
HELM_SERVERS_FILE=$HELM_VAR_DIR/servers.txt
HELM_URIS_DBM=$HELM_VAR_DIR/urls_of_uris.db

dnl CSC: FIXME: getters should download the DTDs
HELM_DTD_DIR=$HELM_SHARE_DIR/dtd
HELM_STYLE_DIR=$HELM_SHARE_DIR/style

dnl HELM prefixes
AC_SUBST(RESOLVED_PREFIX)
AC_SUBST(RESOLVED_EXEC_PREFIX)

dnl HELM version
AC_SUBST(PACKAGE)
AC_SUBST(VERSION)

dnl HELM directories
AC_SUBST(HELM_BIN_DIR)
AC_SUBST(HELM_LIB_DIR)
AC_SUBST(HELM_ETC_DIR)
AC_SUBST(HELM_SHARE_DIR)
AC_SUBST(HELM_VAR_DIR)
AC_SUBST(HELM_TMP_DIR)

dnl HELM download directory
AC_SUBST(HELM_LIBRARY_DIR)

dnl HELM servers
AC_SUBST(HELM_SERVERS_FILE)

dnl HELM URIS data-base
AC_SUBST(HELM_URIS_DBM)

dnl HELM DTDs
AC_SUBST(HELM_DTD_DIR)

dnl HELM stylesheets
AC_SUBST(HELM_STYLE_DIR)

dnl HELM customized GtkMathView configuration
AC_SUBST(HELM_DICTIONARY_PATH)
AC_SUBST(HELM_FONT_CONFIGURATION_PATH)
AC_SUBST(GTKMATHVIEW_DICTIONARY_PATH)
AC_SUBST(GTKMATHVIEW_FONT_CONFIGURATION_PATH)
AC_SUBST(GTKMATHVIEW_T1_CONFIG_FILE)

AC_OUTPUT(
[ Makefile
  helm-config
  lib/configuration.pl
  etc/helm-math-engine-configuration.xml
  etc/configuration.xml
  helm_configuration.spec
], chmod +x helm-config)