#!/bin/bash

# Copyright 2016, 2018  Patrick J. Volkerding, Sebeka, Minnesota, USA
# 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)

PKGNAM=slackpkg
VERSION=${VERSION:-2.83.0}
ARCH="noarch"
BUILD=${BUILD:-4}

# 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 "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM

rm -rf $PKG
mkdir -p $TMP $PKG

# I never use this because it tends to bail on useless errors, but since
# we're actually the upstream here it should never do that.  :-)
set -e

cd $CWD/files

# Install main script:
mkdir -pv $PKG/usr/sbin
cp -av slackpkg.gz $PKG/usr/sbin
gzip -d $PKG/usr/sbin/slackpkg.gz
chmod 755 $PKG/usr/sbin/slackpkg
chown root:root $PKG/usr/sbin/slackpkg

# Prepare /etc directory:
mkdir -pv $PKG/etc/slackpkg
cp -av blacklist.new.gz slackpkg.conf.new.gz $PKG/etc/slackpkg
gzip -d $PKG/etc/slackpkg/*
chmod 644 $PKG/etc/slackpkg/*
chown root:root $PKG/etc/slackpkg/*
mkdir -pv $PKG/etc/slackpkg/templates

# Install support scripts in /usr/libexec/slackpkg:
mkdir -pv $PKG/usr/libexec/slackpkg
cp -av core-functions.sh.gz cutpkg.awk.gz filelist.awk.gz install-new.awk.gz pkglist.awk.gz \
  $PKG/usr/libexec/slackpkg
gzip -d $PKG/usr/libexec/slackpkg/*
chmod 755 $PKG/usr/libexec/slackpkg/*
chown root:root $PKG/usr/libexec/slackpkg/*
mkdir -pv $PKG/usr/libexec/slackpkg/functions.d
cp -av dialog-functions.sh.gz post-functions.sh.gz \
  $PKG/usr/libexec/slackpkg/functions.d
gzip -d $PKG/usr/libexec/slackpkg/functions.d/*
chmod 755 $PKG/usr/libexec/slackpkg/functions.d/*
chown root:root $PKG/usr/libexec/slackpkg/functions.d/*

# Install man pages:
mkdir -pv $PKG/usr/man/man5
cp -av slackpkg.conf.5.gz $PKG/usr/man/man5
chmod 644 $PKG/usr/man/man5/slackpkg.conf.5.gz
chown root:root $PKG/usr/man/man5/slackpkg.conf.5.gz
mkdir -pv $PKG/usr/man/man8
cp -av slackpkg.8.gz $PKG/usr/man/man8
chmod 644 $PKG/usr/man/man8/slackpkg.8.gz
chown root:root $PKG/usr/man/man8/slackpkg.8.gz

# Install internationalized man pages from
# http://slint.fr/forSlackware/man_l10n/slackpkg/
( cd $PKG/usr/man
  tar xf $CWD/manpages-l10n.tar.xz
  for page in manpages-l10n/*slackpkg.conf ; do
    manpage=$(basename $page)
    mkdir -p ${manpage%%.*}/man5
    mv $page ${manpage%%.*}/man5/${page#*.}.5
  done
  for page in manpages-l10n/* ; do
    manpage=$(basename $page)
    mkdir -p ${manpage%%.*}/man8
    mv $page ${manpage%%.*}/man8/${page#*.}.8
  done
  gzip -9 */man?/*.?
  rmdir manpages-l10n
)

# Update version number:
sed -i "s/@VERSION@/$VERSION/g" $PKG/usr/sbin/slackpkg

# Prepare documentation directory:
mkdir -pv $PKG/usr/doc/slackpkg-$VERSION
cp -av ChangeLog.gz GPL.gz README.gz mirrors* \
  $PKG/usr/doc/slackpkg-$VERSION
chown root:root $PKG/usr/doc/slackpkg-$VERSION/*
chmod 644 $PKG/usr/doc/slackpkg-$VERSION/*
gzip -d $PKG/usr/doc/slackpkg-$VERSION/*

# Create additional directories needed by slackpkg:
mkdir -pv $PKG/var/lib/slackpkg
mkdir -pv $PKG/var/cache/packages

# Apply patch in case /var/log/packages is a symlink:
( cd $PKG/usr/libexec/slackpkg
  zcat $CWD/0001-Fix-for-var_log_packages-being-a-symlink.patch.gz | patch -p1 --verbose || exit 1
) || exit 1

# Check for new Changelog.txt by checking CHECKSUMS.md5.asc first:
( cd $PKG/usr/libexec/slackpkg
  zcat $CWD/0002-Use-CHECKSUMS.md5.asc-to-determine-ChangeLog-newness.patch.gz | patch -p2 --verbose || exit 1
) || exit 1

# Remove dead mirrors:
( cd $PKG/usr/doc/slackpkg-$VERSION
  zcat $CWD/0003-mirrors-x86-.sample-Remove-bjtu.edu.cn-mirror.patch.gz | patch -p2 --verbose || exit 1
) || exit 1

( cd $PKG/usr/libexec/slackpkg/functions.d
  zcat $CWD/0005-Clarify-that-a-press-of-Enter-is-needed-to-confirm-k.patch.gz | patch -p2 --verbose || exit 1
) || exit 1

( cd $PKG/usr/libexec/slackpkg
  zcat $CWD/0006-Mention-possible-stale-mirror-if-CHECKSUMS.md5-gpg-v.patch.gz | patch -p2 --verbose || exit 1
) || exit 1

mkdir -p $PKG/install
zcat $CWD/doinst.sh.gz | sed -e "s/@VERSION@/$VERSION/g" > $PKG/install/doinst.sh
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz