#!/bin/bash

# Slackware build script for Telegraf

# Copyright 2017-2021 Ebben Aries <slackbuilds@dscp.org>
# 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.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=telegraf
VERSION=${VERSION:-1.20.2}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

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

UIDGID=349
if ! getent group $PRGNAM; then
	echo "  You must have the \"$PRGNAM\" group to run this script."
	echo "    # groupadd -g $UIDGID $PRGNAM"
	exit 1
elif ! getent passwd $PRGNAM; then
	echo "  You must have the \"$PRGNAM\" user to run this script."
	echo "    # useradd -u $UIDGID -s /bin/false -d /dev/null -g $PRGNAM $PRGNAM"
	exit 1
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "x86_64" ]; then
  PKG_ARCH=amd64
elif [ "$ARCH" = "i586" ] || [ "$ARCH" = "i686" ]; then
  PKG_ARCH=i386
else
  echo "$ARCH is not supported."
  exit 1
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM
tar xvf $CWD/$PRGNAM-${VERSION}_linux_${PKG_ARCH}.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 \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

cp -a . $PKG

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/etc/rc.d
mv $PKG/usr/lib/telegraf/scripts/init.sh $PKG/etc/rc.d/rc.telegraf.new
rm -rf $PKG/usr/lib

mv $PKG/etc/telegraf/telegraf.conf $PKG/etc/telegraf/telegraf.conf.new
mv $PKG/etc/logrotate.d/telegraf $PKG/etc/logrotate.d/telegraf.new
mkdir -p $PKG/etc/default
cat $CWD/telegraf > $PKG/etc/default/telegraf.new

chown telegraf:telegraf $PKG/var/log/telegraf
chmod 0755 $PKG/var/log/telegraf

mkdir -p $PKG/var/run/telegraf
chown telegraf:telegraf $PKG/var/run/telegraf
chmod 0755 $PKG/var/run/telegraf

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

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

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