#!/bin/sh
# Copyright 2020  Danilo 'danix' Macrì < danix@danix.xyz >
# 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.

# Adapted from the lxqt modular build from Eric Hameleers <alien@slackware.com>

### Run this script as lxqt.SlackBuild <program> to build the pkg "program"

set -e

# Set initial variables:
CWD=$(pwd)
TMP=${TMP:-/tmp}
BUILD_DIR=${BUILD_DIR:-$TMP/lxqt-build}

# some useful functions
fix_perms() {
  target_dir=$1
  [ -z "$target_dir" ] && target_dir='.'

  chown -R root:root $target_dir
  find $target_dir \
   \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
   -exec chmod 755 {} \; -o \
   \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
   -exec chmod 644 {} \;
}

strip_binaries() {
  target_dir=$1
  [ -z "$target_dir" ] && target_dir='.'

  find $target_dir | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find $target_dir | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find $target_dir | xargs file | grep "current ar archive" | grep ELF | cut -f 1 -d : | xargs strip -g 2> /dev/null
}

process_man_pages() {
  # Compress and if needed symlink the man pages:
  if [ -d usr/man ]; then
    ( cd usr/man
      for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.* || { touch ${BUILD_DIR}/${PROGRAM}.failed ; continue ; }
      )
      done
    )
  fi
}

process_info_pages() {
  # Compress info pages and purge "dir" file from the package:
  if [ -d usr/info ]; then
    ( cd usr/info
      rm -f dir
      gzip -9 *
    )
  fi
}

no_usr_share_doc() {
  # If there are docs, move them:
  if [ -d usr/share/doc ]; then
    mkdir -p usr/doc
    mv usr/share/doc/* usr/doc
    rmdir usr/share/doc
  fi
}

PROGRAM=$1
SOURCE=$PROGRAM
if [[ $PROGRAM == 'libfm-extra' ]]; then
  SOURCE='libfm'
fi
VERSION=${VERSION:-0.16.0}
PKG="$BUILD_DIR/package-${PROGRAM}"

# Import the build configuration options for as far as they are not already set:
[ -r ./lxqt.options ] && . ./lxqt.options

# This avoids compiling a version number into LXQT's .la files:
QTDIR=/usr/lib${LIBDIRSUFFIX}/qt ; export QTDIR

# Reset $PKGARCH to its initial value:
PKGARCH=$ARCH
# Perhaps $PKGARCH should be something different:
if grep -wq "^${PROGRAM}$" ${CWD}/noarch ; then
  PKGARCH=noarch
fi

rm -rf "$PKG" "$TMP/${PROGRAM}-$VERSION"

cd "$TMP"
cp -R ${CWD}/src/${SOURCE} $TMP/${PROGRAM}-$VERSION
cd "${PROGRAM}"-$VERSION

fix_perms

# If any patches are needed, call this script to apply them:
if [ -r $CWD/patch/${PROGRAM}.patch ]; then
  patch -p1 < $CWD/patch/${PROGRAM}.patch || exit 1
fi

# Check autotools builds before continuing with cmake programs
if [ -r $CWD/autotools/${PROGRAM} ]; then
  echo "sourcing autotools settings for $PROGRAM"
  . $CWD/autotools/${PROGRAM}
else
  if [ -r $CWD/cmake/${PROGRAM} ]; then
    echo "sourcing cmake settings for $PROGRAM"
    . $CWD/cmake/${PROGRAM}
  else
    # This is the default configure script:
    echo "setting generic cmake for $PROGRAM"
    . $CWD/cmake/cmake
  fi
fi

make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1

# Get rid of zero-length junk files:
find $PKG/usr/doc/${PROGRAM}-$VERSION -type f -size 0 -exec rm --verbose "{}" \; || { touch ${BUILD_DIR}/${PROGRAM}.failed ; continue ; }
rmdir --verbose $PKG/usr/doc/${PROGRAM}-$VERSION 2> /dev/null || { touch ${BUILD_DIR}/${PROGRAM}.failed ; continue ; }

# Strip binaries:
strip_binaries || { touch ${BUILD_DIR}/${PROGRAM}.failed ; continue ; }

# If there's any special post-install things to do, do them:
if [ -r $CWD/post-install/${PROGRAM}.post-install ]; then
. $CWD/post-install/${PROGRAM}.post-install
fi

# If this package requires some doinst.sh material, add it here:
if [ -r $CWD/doinst.sh/${PROGRAM} ]; then
mkdir -p $PKG/install
cat $CWD/doinst.sh/${PROGRAM} \
  | sed -e "s#usr/lib#usr/lib${LIBDIRSUFFIX}#g" \
  >> $PKG/install/doinst.sh
fi

cd $PKG
process_man_pages
process_info_pages
no_usr_share_doc
mkdir -p $PKG/install
if [ -r $CWD/slack-desc/${PROGRAM} ]; then
  cat $CWD/slack-desc/${PROGRAM} > $PKG/install/slack-desc
else
  touch $PKG/install/slack-desc-missing
fi

/sbin/makepkg -l y -c n "$BUILD_DIR/${PROGRAM}-$VERSION-$PKGARCH-$BUILD$TAG.txz"