#! /bin/sh

get_param () {
    if [ $# -lt 1 ] ; then
	echo Internal error: parameter required in get_param
	exit -1
    fi
    prompt=$1
    if [ $# -gt 1 ] ; then
	default=$2
    else
	default=""
    fi

    echo ""
    echo "$prompt:"
    echo -n "    [$default]: "
    read answer
    if [ "$answer" = "" ] ; then
	answer=$default
    fi
}

get_yesno () {
    if [ $# -lt 1 ] ; then
	echo Internal error: parameter required in get_yesno
	exit -1
    fi
    prompt=$1
    if [ $# -gt 1 ] ; then
	default=$2
	if [ "$default" != "Y" -a "$default" != "y" -a "$default" != "N" -a "$default" != "n" ] ; then
	    echo Internal error: Defualt must be Y, y, N, or n
	    exit -1
	fi
    else
	default=""
    fi

    answer=""

    while [ "$answer" != "Y" -a "$answer" != "y" -a "$answer" != "N" -a "$answer" != "n" ] ; do
	echo -n "$prompt [Y/N] <$default> "
	read answer
	if [ "$answer" = "" ] ; then
	    answer=$default
	fi
    done
}

find_exe () {
    exename=$1
    exefile=""
    for d in `echo $PATH | sed 's/:/ /g'` ; do
	if [ -x $d/$exename ] ; then
	    exefile=$d/$exename
	fi
    done
}


echo "======== Alpha Motherboard SDK V4.0 installation ========"

if [ -f LICENSE ] ; then
    echo ""
    echo "Before you can use the SDK, you must read"
    echo "and accept the COMPAQ SDK license agreement"
    echo "Press ENTER to continue: "
    read answer
    more LICENSE
    echo ""
    get_yesno "Do you accept the license agreement?" N
    if [ "$answer" != "Y" -a "$answer" != "y" ] ; then
	echo "Exiting install procedure"
	exit 1
    fi
fi

if [ ! -f ebsdk-unix.tar.z ] ; then
    echo "Cannot find ebsdk-unix.tar.z; make sure you are in the"
    echo "root directory of the distribution CD"
    exit 1
fi

SDKDIST=`pwd`

find_exe acroread
if [ "$exefile" = "" ] ; then
    echo "The SDK documentation is provided in PDF format and"
    echo "requires Adobe Acrobat Reader to be read."
    echo "Acrobat Reader does not appear to be in your $PATH."
    get_yesno "Do you wish to install Acrobat Reader at this time?" Y
    if [ "$answer" != "n" -a "$answer" != "n" ] ; then
	cd $SDKDIST/acroread_osf_301
	./INSTALL
	cd $SDKDIST
    fi
else
    echo "Adobe Acrobat Reader found in $exefile"
fi

get_param "Enter directory for SDK install" $HOME/EBSDK
INSTALLDIR=$answer

if [ ! -d "$INSTALLDIR" ] ; then
    get_yesno "$answer does not exist; create it?"
    if [ "$answer" != "Y" -a "$answer" != "y" ] ; then
	echo "Exiting install procedure"
	exit 1
    fi
    mkdir -p $INSTALLDIR
    if [ ! -d "$INSTALLDIR" ] ; then
	echo Cannot create $INSTALLDIR; exiting install procedure
	exit 1
    fi
fi

cd $INSTALLDIR
pcat $SDKDIST/ebsdk-unix.tar.z | tar xvf -