#!/bin/bash

# variables
CWD=$(pwd)

PRGNAM=$(basename $CWD)
GITHUB_REPO=louisrubet/rpn
VERSION=${VERSION:-$(curl -s https://api.github.com/repos/${GITHUB_REPO}/releases/latest | jq -r .tag_name | sed 's|^null$|trunk|')} # or VERSION=trunk
ARCH=${ARCH:-$(uname -m)}
BUILD=1

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

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

PREFIX=/usr

SLCKFLAGS=" -O "

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

mkdir -p $PKG

# mise en place
cd $TMP
[ ! -e $REPOSITORY ] && git clone https://github.com/${GITHUB_REPO}.git $REPOSITORY

cp -R $REPOSITORY $TMP/$PRGNAM-$VERSION
cd $TMP/$PRGNAM-$VERSION
[ "x$VERSION" == "xtrunk" ] && VERSION="git_$(git log -1 --format=%h_%ad --date=format:%Y.%m.%d)" || git checkout $VERSION

sed -i 's|git@github.com:|https://github.com/|g' $(grep -l git@ .*)

# configuration
cmake \
    -DCMAKE_INSTALL_PREFIX=$PREFIX \
    .

# compilation
make -j3

# installation
make install DESTDIR=$PKG

mkdir -p $PKG$PREFIX/doc/$PRGNAM
cp -R test/ doc/ *.md LICENSE $PKG$PREFIX/doc/$PRGNAM

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

find $PKG -name \.git\* -exec rm -fr {} \;

[ -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 (Math functional language, inspired by HP RPL language)
$PRGNAM:
$PRGNAM: rpn - Reverse Polish Notation language
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM: https://github.com/${GITHUB_REPO}
$PRGNAM:
EOF

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