#!/bin/sh

CWD=$(pwd)

# default settings
PRGNAM=$(basename $CWD)
ARCH=$(uname -m)
VERSION=${VERSION:-$(date +%Y.%m.%d_%H.%M)}
BUILD=1


TAG=gwh
TMP=/tmp/$TAG
PKG=$TMP/pkg-$PRGNAM
OUTPUT=/tmp

REPOSITORY=/home/installs/SlackBuilds/repositories/$PRGNAM

DOCS="ABOUT-NLS AUTHORS BUGS COPYING ChangeLog INSTALL NEWS README TODO"

if [ -z "$ARCH" ]; then
case "$( uname -m )" in
  i?86) ARCH=i586 ;;
  arm*) ARCH=arm ;;
  *) ARCH=$( uname -m ) ;;
esac
fi

if [ "$ARCH" = "i586" ]; then
    SLKCFLAGS="-O2 -march=i586 -mtune=i686"
    LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
    SLKCFLAGS="-O2 -march=i686 -mtune=i686"
    LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
    SLKCFLAGS="-O2 -fPIC"
    LIBDIRSUFFIX="64"
elif [ "$ARCH" = "aarch64" ]; then
    SLKCFLAGS="-O2 -fPIC"
    LIBDIRSUFFIX="64"
else
    SLKCFLAGS="-O2 -fPIC"
    LIBDIRSUFFIX="64"
fi

rm -rf $PKG $TMP/$PRGNAM
mkdir -p $PKG
cd $TMP

if [ -e $CWD/$PRGNAM-$VERSION.tar.xz ] ; then
    tar xvf $CWD/$PRGNAM-$VERSION.tar.xz
else
    [ ! -e $REPOSITORY ] && git clone https://github.com/keplerproject/luafilesystem.git $REPOSITORY
    ( cd $REPOSITORY && git pull )
    VERSION="git_$( cd $REPOSITORY && git log -1 --format=%h_%ad --date=format:%Y.%m.%d )"

    cp -R $REPOSITORY $PRGNAM
fi
cd $PRGNAM

LUA_VERSION=$(lua -v 2>&1 | grep -o "5\..")

sed -i \
    -e '/^CFLAGS= /s,-O2,'"$SLKCFLAGS"',' \
    -e "s|/usr/local|/usr|" \
    -e "s|/lib/lua/|/share/lua/|" \
    -e "s|LUA_VERSION=5.1|LUA_VERSION=$LUA_VERSION|" \
    Makefile

LIBDIRSUFFIX=$( uname -m | grep -o 64 )

make LUA_LIBDIR=/usr/lib$LIBDIRSUFFIX/lua/$LUA_VERSION \
     LUA_SHAREDIR=/usr/share/lua/$LUA_VERSION \
     PREFIX=/usr CFLAGS="$SLKCFLAGS"
make LUA_LIBDIR=/usr/lib$LIBDIRSUFFIX/lua/$LUA_VERSION \
     LUA_SHAREDIR=/usr/share/lua/$LUA_VERSION \
     DESTDIR=$PKG install

cd $PKG

find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
[ -d $PKG/usr/man ] && find $PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;

mkdir -p install
cat << EOF > install/slack-desc
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.  Line
# up the first '|' above the ':' following the base package name, and the '|'
# on the right side marks the last column you can put a character in.  You must
# make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':'.

       |-----handy-ruler-----------------------------------------------------|
$PRGNAM: $PRGNAM (Lua Filesystem libraries)
$PRGNAM:
$PRGNAM: A set of pure Lua libraries focusing on input data handling (such as
$PRGNAM: reading configuration files), functional programming (such as map,
$PRGNAM: reduce, placeholder expressions,etc), and OS path management. Much of
$PRGNAM: the functionality is inspired by the Python standard libraries.
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM: https://github.com/keplerproject/luafilesystem
$PRGNAM:
EOF

chown -R root:root $PKG

rm -f $PKG/{,usr/}lib$(uname -m | grep -o 64)/*.la
/sbin/makepkg -c n -l y $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.txz