#!/bin/bash

# variables
VERSION=${VERSION:-latest}

TAG=gwh
TMP=/tmp/$TAG
OUTPUT=/tmp
CWD=$(pwd)
REPOSITORIES=/var/cache/SlackBuilds.gwh
REPOSITORY=$REPOSITORIES/$PRGNAM

PRGNAM=$(basename $CWD)
PKG=$TMP/pkg-$PRGNAM

DOCS="COPYING* README*"

ARCH=$(uname -m)
BUILD=1

PREFIX=/usr

SLCKFLAGS="-fPIC -O2"

# nettoyage préalable
rm -fr $PKG $TMP/$PRGNAM

mkdir -p $PKG

# mise en place
cd $TMP
#[ ! -e $REPOSITORIES ] && mkdir -p $REPOSITORIES
[ ! -e $REPOSITORIES/$PRGNAM ] && git clone http://github.com/keplerproject/luarocks.git $REPOSITORIES/$PRGNAM
( cd $REPOSITORIES/$PRGNAM;
  git pull
)

cp -R $REPOSITORIES/$PRGNAM $TMP/$PRGNAM
cd $PRGNAM

[ "x$VERSION" == "xlatest" ] && VERSION=$(git tag --sort=-version:refname | head -n1)
[ "x$VERSION" == "x" ] && VERSION=trunk
[ "x$VERSION" == "xtrunk" ] && VERSION="git_r$(git rev-list --count HEAD)_$(git log -1 --format=%h)" || git checkout $VERSION

# configuration
CFLAGS=$SLCKFLAGS \
CPPFLAGS=$SLCKFLAGS \
./configure \
		  --prefix=$PREFIX \
		  --lua-version=$(lua -v  | rg -o "[0-9]\.[0-9]" | head -n1)

# compilation
make -j3 PREFIX=$PREFIX

# installation
make install DESTDIR=$PKG ROCKS_TREE=$PREFIX/lib64/luarocks

mkdir -p $PKG/etc/profile.d/
cat <<EOF > $PKG/etc/profile.d/luarocks.sh
#!/bin/bash

export PATH=\$PATH:$PREFIX/lib64/luarocks/bin
EOF
cat <<EOF > $PKG/etc/profile.d/luarocks.csh
#!/bin/csh

setenv PATH \$PATH:$PREFIX/lib64/luarocks/bin
EOF
chmod +x $PKG/etc/profile.d/*

# correction
cd $PKG
chown -R root:root *

mkdir -p $PKG/usr/doc/$PRGNAM
cd $TMP/$PRGNAM
cp -R *.md COPYING $PKG/usr/doc/$PRGNAM

[ -d $PKG/usr/man ] && find $PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;

# Strip binaries
( 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
)


# embaumement
mkdir -p $PKG/install
cat <<EOF > $PKG/install/slack-desc
$PRGNAM: $PRGNAM (deployment and management system for Lua modules.)
$PRGNAM:
$PRGNAM: LuaRocks allows you to install Lua modules as self-contained packages
$PRGNAM: called [*rocks*]
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM: LuaRocks is free software and uses the same license as Lua 5.1.
$PRGNAM:
$PRGNAM: http://luarocks.org
$PRGNAM:
EOF

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