#!/bin/sh

# Slackware build script for Fennel
# Copyright 2020 abooksigun <abooksigun09@gmail.com>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PRGNAM=Fennel
VERSION=${VERSION:-0.5.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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

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

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"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

make fennel

LUAVER=${LUAVER:-"5.1 5.2 5.3 5.4 jit"}
BINARY=${BINARY:-no}
for i in $LUAVER
do
  if [ $i == 5.1 ] || [ $i == 5.2 ] || [ $i == 5.3 ] || [ $i == 5.4 ] || [ $i == jit ]
  then
    if [ $i != 5.1 ]; then ver=$i libver=$i include=lua$i; fi
    if $(lua$ver -v &> /dev/null)
    then
      sed -i "1s|lua.*|lua$ver|" fennel
      if [ "$BINARY" == "yes" ] && [ $i != 5.1 ]
      then
        if [ $i == jit ]; then libver=jit-5.1 include=luajit-2.0; fi
        make \
          STATIC_LUA_LIB=/usr/lib$LIBDIRSUFFIX/liblua$libver.a \
          LUA_INCLUDE_DIR=/usr/include/$include \
          fennel-bin
        install -D -m 0755 fennel-bin $PKG/usr/bin/fennel$ver
        rm fennel-bin
      else
        install -D -m 0755 fennel $PKG/usr/bin/fennel$ver
      fi
      if [ $i != jit ]
      then
        install -D -m 0644 -t $PKG/usr/share/lua/$i fennel.lua fennelview.fnl fennelview.lua
      fi
    fi
  else
    echo -e 'LUAVER must be one or more of "5.1 5.2 5.3 5.4 jit" separated with space'
    exit 1
  fi
done

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

mkdir -p $PKG/usr/man/man1
gzip -9 fennel.1
cp fennel.1.gz $PKG/usr/man/man1

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -t $PKG/usr/doc/$PRGNAM-$VERSION \
  api.md changelog.md CODE-OF-CONDUCT.md CONTRIBUTING.md LICENSE lua-primer.md \
  README.md reference.md release-checklist.md setup.md tutorial.md

cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

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