#!/bin/sh
#
# Copyright 2004-2008 University of Zagreb, Croatia.
#
# 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.
#
# THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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.
#
# This work was supported in part by Croatian Ministry of Science
# and Technology through the research contract #IP-2003-143.
#
case $1 in 
-h | --help) 
    echo ""
    echo "Usage: `basename $0` [-h|-v] [-b|-c <sessionid>] [-s] [-a address] [-p port]"
    echo "                [<configfile.imn>]"
    echo ""
    echo "Launches the CORE Tcl/Tk X11 GUI or starts an imn-based emulation."
    echo ""
    echo "  -(-h)elp     show help message and exit"
    echo "  -(-v)ersion  show version number and exit"
    echo "  -(-b)atch    batch mode (no X11 GUI)"
    echo -n "  -(-c)losebatch <sessionid>  stop and clean up a batch mode "
    echo "session <sessionid>"
    echo "  -(-s)tart    start in execute mode, not edit mode"
    echo "  -(-a)ddress  connect to the specified IP address (default 127.0.0.1)"
    echo "  -(-p)port    connect to the specified TCP port (default 4038)"
    echo "  <configfile.imn>  (optional) load the specified imn scenario file"
    echo ""
    echo "With no parameters, starts the GUI in edit mode with a blank canvas."
    echo ""
    exit 0
    ;; 
-v | --version) 
    exec echo "`basename $0` version @PACKAGE_VERSION@ (@PACKAGE_DATE@)"
    exit 0
    ;; 
esac

SHELL=/bin/sh
export SHELL

export LIBDIR="@CORE_LIB_DIR@"
export SBINDIR="@sbindir@"
# eval is used here to expand "~" to user's home dir
if [ x$CONFDIR = x ]; then export CONFDIR=`eval "echo @CORE_GUI_CONF_DIR@"` ; fi
export CORE_STATE_DIR="@CORE_STATE_DIR@"
export CORE_DATA_DIR="@CORE_DATA_DIR@"
export CORE_USER=`id -u -n`
export CORE_START_DIR=$PWD

init_conf_dir() {
    echo "Setting up user config area $CONFDIR, $CONFDIR/configs, and "
    echo " $CONFDIR/myservices"
    mkdir -p $CONFDIR
    if [ $? != 0 ]; then echo "error making directory $CONFDIR!"; fi
    mkdir -p $CONFDIR/configs
    if [ $? != 0 ]; then
	echo "error making directory $CONFDIR/configs!";
    else
	cp -a $CORE_DATA_DIR/examples/configs/* $CONFDIR/configs/
    fi
    mkdir -p $CONFDIR/myservices
    if [ $? != 0 ]; then
	echo "error making directory $CONFDIR/myservices!";
    else
	cp -a $CORE_DATA_DIR/examples/myservices/* $CONFDIR/myservices/
    fi
    mkdir -p $CONFDIR/myemane
    if [ $? != 0 ]; then
	echo "error making directory $CONFDIR/myemane!";
    else
	cp -a $CORE_DATA_DIR/examples/myemane/* $CONFDIR/myemane/
    fi
}

cd $LIBDIR

core=$LIBDIR/core.tcl

# locate wish8.5 binaries
WISHLIST="/usr/bin/wish8.6 /usr/local/bin/wish8.5 /usr/bin/wish8.5"
for wishbin in $WISHLIST
do
    if [ -x $wishbin ]
    then
	WISH=$wishbin;
	break;
    fi;
done;

if [ a$WISH = a ]
then
    echo "CORE could not locate the Tcl/Tk binary (wish8.5)."
    exit 1;
fi;

# create /home/user/.core directory if necessary
if [ ! -e $CONFDIR ]
then
    init_conf_dir
fi;

# check for and fix write permissions on /home/user/.core directory
while [ ! -w $CONFDIR ];
do
    echo "  CORE requires write permissions to the '$CONFDIR'"
    echo "  configuration directory for the user '$CORE_USER',"
    echo "  would you like to fix this now [Y/n]?"
    read yn
    if [ "z$yn" = "zn" ]; then
	break
    fi
    echo -n "  (sudo may prompt you for a password; if you do not have sudo set"
    echo " up for the"
    echo "  user '$CORE_USER', su to root and run this command:"
    echo "     chown -R $CORE_USER $CONFDIR )"
    sudo chown -R $U $CONFDIR
    sudo chmod -R u+w $CONFDIR
done

# GUI config directory should not be a file (old prefs)
if [ ! -d $CONFDIR ]
then

    mv $CONFDIR $CONFDIR.tmp
    if [ $? != 0 ]; then echo "error moving $CONFDIR!"; exit 1; fi
    init_conf_dir
    echo "Old preferences file $CONFDIR has been moved to $CONFDIR/prefs.conf"
    mv $CONFDIR.tmp $CONFDIR/prefs.conf
    if [ $? != 0 ]; then echo "error moving $CONFDIR.tmp to $CONFDIR/prefs.conf!"; exit 1; fi
fi;

case $1 in 
-b | --batch)
    TCLBIN=`echo ${WISH} | sed s/wish/tclsh/g` 
    exec ${TCLBIN} $core "$@" 
    ;; 
-c | --closebatch)
    TCLBIN=`echo ${WISH} | sed s/wish/tclsh/g` 
    exec ${TCLBIN} $core "$@" 
    ;; 
-s)
    shift
    exec ${WISH} $core -- "--start" "$@"
    ;;
-a)
    shift
    exec ${WISH} $core -- "--address" "$@"
    ;;
-p)
    shift
    exec ${WISH} $core -- "--port" "$@"
    ;;
*)
    exec ${WISH} $core -- $@
    ;; 
esac 

cd $CORE_START_DIR
