#!/bin/bash
# Configure script for fresh RAT code release
# authored by Jared Nance at University of Washington
# nancejk@phys.washington.edu

#Check uname
printf "%-50s" "Checking Host OS type..."
HOSTOS=`uname` && printf "$HOSTOS\n"

#Now check if sed is GNU or BSD, as this will be important.
printf "%-50s" "Checking if sed is GNU or BSD..."
#GNU sed supports a --version flag, whereas BSD sed does not.
sed --version &> /dev/null
if [ $? == 1 ]; then
 GNUSED=0 && printf "BSD\n" 
else
 GNUSED=1 && printf "GNU\n"
fi

#Now check if a system scons is present
#We rely on the sasquatch makefile, which is better
#than to assume we are the default dev branch
printf "%-50s" "Checking for system scons..."
SCONS=`which scons`
if [ $? == 1 ] || [ "$SCONS"=="$RAT_SCONS/script/scons" ]; then
 printf "no, using the snocave scons\n"
 SCONS_BIN="$RAT_SCONS/script:"
 SCONS_LIB="$RAT_SCONS/engine:"
else
 printf "installed\n"
 SCONS_BIN=""
 SCONS_LIB=""
fi

SYSTEM="${HOSTOS}"

#OK, now we make env.sh and env.csh.
printf "%-50s" "Generating env.sh..."
cat > env.sh << EOF
RATROOT=`pwd`
PATH=\$RATROOT/bin:$SCONS_BIN\$PATH
LD_LIBRARY_PATH=\$RATROOT/lib:\$LD_LIBRARY_PATH
# For Mac OS X
DYLD_LIBRARY_PATH=\$RATROOT/lib:\$DYLD_LIBRARY_PATH
GLG4DATA=\$RATROOT/data
RAT_CFLAGS="$RAT_CFLAGS"
RATSYSTEM=$SYSTEM
PYTHONPATH=\$RATROOT/python:$SCONS_LIB\$PYTHONPATH
ROOT_INCLUDE_PATH=\$RATROOT/include:\$RATROOT/include/libpq:\$ROOT_INCLUDE_PATH
export RATROOT PATH LD_LIBRARY_PATH DYLD_LIBRARY_PATH GLG4DATA RAT_CFLAGS PYTHONPATH RATSYSTEM ROOT_INCLUDE_PATH
EOF
[[ -e env.sh ]] && chmod +x env.sh && printf "OK\n"

printf "%-50s" "Generating env.csh..."
cat > env.csh << EOF
#!/bin/csh
setenv RATROOT `pwd`
setenv PATH "\$RATROOT/bin:$SCONS_BIN\$PATH"
if ({\$?LD_LIBRARY_PATH}) then
 setenv LD_LIBRARY_PATH "\${RATROOT}/lib:\$LD_LIBRARY_PATH"
else
 setenv LD_LIBRARY_PATH "\${RATROOT}/lib"
endif

# For Mac OS X
if ({\$?DYLD_LIBRARY_PATH}) then
 setenv DYLD_LIBRARY_PATH "\${RATROOT}/lib:\$DYLD_LIBRARY_PATH"
else
 setenv DYLD_LIBRARY_PATH "\${RATROOT}/lib"
endif
setenv RATSYSTEM "$SYSTEM"
if ({\$?PYTHONPATH}) then
 setenv PYTHONPATH "\$RATROOT/python:$SCONS_LIB\$PYTHONPATH"
else
 setenv PYTHONPATH "$SCONS_LIB\$RATROOT/python"
endif
if ({\$?ROOT_INCLUDE_PATH}) then
 setenv ROOT_INCLUDE_PATH "\$RATROOT/include:\$RATROOT/include/libpq:\$ROOT_INCLUDE_PATH:\$ROOT_INCLUDE_PATH"
else
 setenv ROOT_INCLUDE_PATH "\$RATROOT/include:\$RATROOT/include/libpq:\$ROOT_INCLUDE_PATH"
endif
setenv GLG4DATA "\$RATROOT/data"
setenv RAT_CFLAGS "$RAT_CFLAGS"
EOF
[[ -e env.csh ]] && chmod +x env.csh && printf "OK\n"

printf "%-50s" "Checking for git..."
which git &> /dev/null
test $? -eq 0 && printf "Installed\n" || printf "Not Installed\n"
printf "%-50s" "Checking if this is a git repository..."
git branch &> /dev/null
test $? -eq 0 && USEGIT=1 || USEGIT=0
test $USEGIT -eq 1 && printf "yes\n" || printf "no\n"
# ignore changes to src/core/Version.hh
test $USEGIT -eq 1 && git update-index --assume-unchanged src/core/Version.hh

#Now just spit out some information for the user about what to do next.
printf "\n"
printf "Configure completed. Before you try to run make, you will need to source the env.{sh,csh} file created here.\n"