#!/bin/sh

# Slackware build script for sage
# Written by Jack Maddox <jack@auburn.edu>

PRGNAM=sage
VERSION=${VERSION:-5.3}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i486 ;;
    arm*) export ARCH=arm ;;
       *) export ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

SAGEROOT=${SAGEROOT:-/opt/sage}

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT 
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar
cd $PRGNAM-$VERSION
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;
        
mkdir -p $PKG/$SAGEROOT $PKG/usr/share/{applications,pixmaps} \
         $PKG/usr/doc/$PRGNAM-$VERSION $PKG/etc/profile.d
make

# test all examples in the documentation (over 93,000 line of input)
[ "${TEST:-no}" = "yes" ] && make test

# build the pdf version of the documentation 
# (Note: this requires a LaTeX installation)
if [ "${PDFDOC:-no}" = "yes" ]; then
  ./sage -docbuild all pdf
  cp -av devel/sage/doc/output/pdf $PKG/usr/doc/$PRGNAM-$VERSION
fi

# install optional packages as defined by the OPTIONALSPKG flag
OPTIONALSPKG=${OPTIONALSPKG:-no}
if [ "$OPTIONALSPKG" != "no" ]; then
    for i in ${OPTIONALSPKG}; do
        ./sage -i $(./sage -optional | grep ${i})
    done
fi

cp -av * $PKG/$SAGEROOT

find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# Sage installs specific versions of a number of software components which
# may be different from the system-wide versions of those components. For 
# this reason, the man and info pages are not moved to /usr/man and 
# /usr/info.  To avoid possible conflicts, they are compressed in place.
find $PKG/$SAGEROOT/local/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/$SAGEROOT/local/man -type l ) ; do
  ln -s $( readlink $i ).gz $i.gz ; rm $i
done
find $PKG/$SAGEROOT/local/share/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/$SAGEROOT/local/share/man -type l ) ; do
  ln -s $( readlink $i ).gz $i.gz ; rm $i
done
gzip -9 $PKG/$SAGEROOT/local/share/info/*.info*

# Add profile scripts
sed "s%SAGEROOT%${SAGEROOT}%" $CWD/profile.d/sage.sh > $PKG/etc/profile.d/sage.sh
sed "s%SAGEROOT%${SAGEROOT}%" $CWD/profile.d/sage.csh > $PKG/etc/profile.d/sage.csh
chmod 0755 $PKG/etc/profile.d/*

# install scripts to SAGEROOT/bin that allow the internal sage versions of: gap, 
# gp, singular, maxima, M2, kash, mwrank, ipython, hg, and R to be run independently 
# and add SAGEROOT/bin to the PATH
if [ "${INSTALLSCRIPTS:-no}" = "yes" ]; then
  mkdir $PKG$SAGEROOT/bin
  echo "install_scripts('$PKG$SAGEROOT/bin')" | ./sage
  sed -i 's%$PATH:${SAGE_ROOT}%$PATH:${SAGE_ROOT}:${SAGE_ROOT}/bin%' $PKG/etc/profile.d/sage.sh
  sed -i 's%$path ${SAGE_ROOT}%$path ${SAGE_ROOT} ${SAGE_ROOT}/bin%' $PKG/etc/profile.d/sage.csh
fi

cat $CWD/$PRGNAM-notebook.desktop > $PKG/usr/share/applications/$PRGNAM-notebook.desktop
cp data/extcode/notebook/images/sageicon.png $PKG/usr/share/pixmaps/

# install sagetex to a location that is accessible to the system TeX installation
cp -a local/share/texmf $PKG/usr/share

cp -a COPYING.txt README.txt $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
sed "s%SAGEROOT%${SAGEROOT}%" $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -p -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}