#!/bin/bash

# Slackware build script for megax (formerly 'megacc')
# This takes the place of "megacc" in 2018, as it includes also the GUI
# of the program (megax) in addition to megacc.

# Copyright 2017-2020 Petar Petrov slackalaxy@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.

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

PRGNAM=megax
VERSION=${VERSION:-10.2.5_1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

DEBVER=$(echo $VERSION | tr _ -)

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i386 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
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 [ "$ARCH" = "i386" ] || [ "$ARCH" = "i486" ] || [ "$ARCH" = "i586" ] || [ "$ARCH" = "i686" ]; then
  LIBDIRSUFFIX=""
  DEBARCH="i386"
elif [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
  DEBARCH="amd64"
else
  printf "\n\n$ARCH is not supported... \n"
  exit 1
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
mkdir $PRGNAM-$VERSION
cd $PRGNAM-$VERSION
ar p $CWD/${PRGNAM}_${DEBVER}_${DEBARCH}.deb data.tar.xz | tar xJv
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 {} \;

# Fix path in runmega.sh for x86_64
sed -i "s|/usr/lib/megax|/usr/lib${LIBDIRSUFFIX}/megax|g" usr/lib/$PRGNAM/runmega.sh

# Place things in /usr/lib and just create symlinks later.
# This is what Debian's and RedHat's packages do.
mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}
cp -a usr/lib/$PRGNAM $PKG/usr/lib${LIBDIRSUFFIX}

# Copy man pages to their proper place.
cp -a usr/local/share/man $PKG/usr

mkdir -p $PKG/usr/bin
cd $PKG/usr/bin
  ln -s ../lib${LIBDIRSUFFIX}/$PRGNAM/megacc
  ln -s ../lib${LIBDIRSUFFIX}/$PRGNAM/runmega.sh megax
cd -

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

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

# Menu entry for MEGA X, use our .desktop file
mkdir -p $PKG/usr/share/{applications,pixmaps}
cp $CWD/$PRGNAM.desktop $PKG/usr/share/applications
cp usr/share/pixmaps/mega.png $PKG/usr/share/pixmaps/megax.png

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

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