#!/bin/bash

# Slackware build script for snapd

# Copyright 2024 Nathaniel Russell <naterussell83@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.

#wget -c https://github.com/snapcore/snapd/releases/download/2.68.3/snapd_2.68.3.vendor.tar.xz
wget -c https://github.com/canonical/snapd/releases/download/2.68.3/snapd_2.68.3.vendor.tar.xz

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

PRGNAM=snapd
SRCNAM=snapd_
VERSION=${VERSION:-2.68.3}
SRCVER=$VERSION.vendor
TAG=_njr
BUILD=${BUILD:-1}
PKGTYPE=${PKGTYPE:-txz}

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

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

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

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "aarch64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$SRCNAM$SRCVER.tar.?z
cd $PRGNAM-$VERSION
chown -R root:root .

  export CGO_ENABLED="1"
  export CGO_CFLAGS="${SLKCFLAGS}"
  export CGO_CPPFLAGS="${SLKCFLAGS}"
  export CGO_CXXFLAGS="${SLKCFLAGS}"
  export CGO_LDFLAGS="${SLKCFLAGS}"

cat >"packaging/snapd.defines.mk" <<__DEFINES__
# This file is generated by snapd packaging
# Directory variables.
prefix = /usr
bindir = $prefix/bin
sbindir = $prefix/sbin
libexecdir = $prefix/lib${LIBDIRSUFFIX}
mandir = $prefix/share/man
datadir = $prefix/share
localstatedir = /var
sharedstatedir = /var/lib
unitdir = $prefix/lib/systemd/system
builddir = $TMP/$PRGNAM-$VERSION/_go_build
# Build configuration
with_core_bits = 0
with_alt_snap_mount_dir = 1
with_apparmor = 0
with_testkeys = ${WITH_TEST_KEYS:-0}
EXTRA_GO_BUILD_FLAGS = -trimpath
EXTRA_GO_LDFLAGS = -compressdwarf=false -w -s
__DEFINES__

sed -i 's/\<ldflags\>/gccgoflags/g' packaging/snapd.mk
#sed -i 's/^GO_TAGS = nosecboot$/GO_TAGS =/' packaging/snapd.mk

echo "$VERSION" > VERSION

  make -f packaging/snapd.mk \
       SNAPD_DEFINES_DIR="$TMP/$PRGNAM-$VERSION/packaging"

  make -C data \
       BINDIR=/bin \
       LIBEXECDIR=/usr/lib${LIBDIRSUFFIX} \
       SYSTEMDSYSTEMUNITDIR=/usr/lib/systemd/system \
       SNAP_MOUNT_DIR=/var/lib/snapd/snap \
       SNAPD_ENVIRONMENT_FILE=/etc/default/snapd

cd cmd
autoreconf -i -f

./configure \
    --prefix=/usr \
    --sysconfdir=/etc \
    --localstatedir=/var \
    --libexecdir=/usr/lib${LIBDIRSUFFIX}/snapd \
    --with-snap-mount-dir=/var/lib/snapd/snap \
    --disable-apparmor \
    --enable-selinux=no \
    --enable-nvidia-biarch \
    --enable-merged-usr
make
make install-strip DESTDIR=$PKG
cd ..

  make -C data install \
     DBUSSERVICESDIR=/usr/share/dbus-1/services \
     BINDIR=/usr/bin \
     SYSTEMDSYSTEMUNITDIR=/usr/lib/systemd/system \
     SNAP_MOUNT_DIR=/var/lib/snapd/snap \
     DESTDIR="$PKG"

  make -C cmd install DESTDIR="$PKG"

  make -f packaging/snapd.mk \
       SNAPD_DEFINES_DIR="$TMP/$PRGNAM-$VERSION/packaging" \
       DESTDIR="$PKG" \
       install

rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la

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

mv $PKG/usr/share/man $PKG/usr

# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
  ( cd $PKG/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 *.*
      )
    done
  )
fi

# Compress info files, if any:
if [ -d $PKG/usr/info ]; then
  ( cd $PKG/usr/info
    rm -f dir
    gzip -9 *
  )
fi

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a   *.md \
    $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

if [ -r ChangeLog ]; then
  cat ChangeLog | head -n 1000 > $PKG/usr/doc/$PRGNAM-$VERSION/ChangeLog
  touch -r ChangeLog $PKG/usr/doc/$PRGNAM/ChangeLog
fi

# It's a bad idea to ship these in the packages.  If they aren't kept
# updated, there will be missing icons.  Let the user create them if
# they care to.
find $PKG -name icon-theme.cache -exec rm "{}" \+
find $PKG -name .icon-theme.cache -exec rm "{}" \+

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
#zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh
if [ -f $CWD/slack-required ]; then cat $CWD/slack-required > $PKG/install/slack-required; fi
if [ -f $CWD/slack-suggests ]; then cat $CWD/slack-suggests > $PKG/install/slack-suggests; fi
if [ -f $CWD/slack-conflicts ]; then cat $CWD/slack-conflicts > $PKG/install/slack-conflicts; fi

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