#!/bin/bash

# variables
CWD=$(pwd)

PRGNAM=$(basename $(pwd))
GITHUB_REPO=Hummer12007/brightnessctl
VERSION=${VERSION:-latest}
ARCH=${ARCH:-$(uname -m)}
BUILD=1

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

REPOSITORIES=/var/cache/SlackBuilds.gwh

PREFIX=/usr

[ ! -e $REPOSITORIES/$PRGNAM ] && git clone https://github.com/${GITHUB_REPO}.git $REPOSITORIES/$PRGNAM
cd $REPOSITORIES/$PRGNAM
git pull --all

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

mkdir -p $PKG

# mise en place
cd $TMP
cp -R $REPOSITORIES/$PRGNAM $TMP/$PRGNAM

cd $TMP/$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

./configure \
    --prefix=/usr

# compilation
make -j3 PREFIX=$PREFIX

# installation
make install DESTDIR=$PKG PREFIX=$PREFIX MANDIR=$PKG$PREFIX/man

chmod a+s $PKG/usr/bin/brightnessctl

mkdir -p $PKG/usr/doc/$PRGNAM
cp LICENSE README.md $PKG/usr/doc/$PRGNAM/

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

[ -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/doinst.sh
chmod a+s /usr/bin/brightnessctl
EOF

cat <<EOF > $PKG/install/slack-desc
$PRGNAM: $PRGNAM ( A program to read and control device brightness)
$PRGNAM:
$PRGNAM: This program allows you read and control device brightness. Devices, by default,
$PRGNAM: include backlight and LEDs (searched for in corresponding classes). If omitted,
$PRGNAM: the first found device is selected.
$PRGNAM:
$PRGNAM: It can also preserve current brightness before applying the operation
$PRGNAM: (allowing for usecases like disabling backlight on lid close).
$PRGNAM:
$PRGNAM: https://github.com/${GITHUB_REPO}
$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-$(echo $VERSION | sed 's/-//g')-$ARCH-$BUILD$TAG.txz