#!/bin/bash

# Slackware build script for brother-dcp8410-cups

# Copyright 2024-2026 Shahab Vahedi
# 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=brother-dcp8410-cups
VERSION=${VERSION:-1.5.0_3}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}
MODEL=dcpl8410cdw

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

case "$ARCH" in
  x86_64)
    LIBDIRSUFFIX="64"
    ;;
  i?86)
    LIBDIRSUFFIX=""
    ;;
  *)
    echo "Don't know how to handle lib dir suffix."
    exit 1
    ;;
esac

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}

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $PKG
DEBVER=$(echo $VERSION | tr '_' '-')
ar p $CWD/${MODEL}cupswrapper-${DEBVER}.i386.deb data.tar.gz | tar xvz

chown -R root:root .
find . ! -type l -a \( \
  \(   -perm /111 -a ! -perm 755 -a -exec chmod -f 755 {} + \) -o \
  \( ! -perm /111 -a ! -perm 644 -a -exec chmod -f 644 {} + \) \
\)

INST_OPT=opt/brother/Printers/${MODEL}/cupswrapper

# The goal is to populate the files in the following manner:
#
# /usr/share/cups/model/brother_${MODEL}_printer_en.ppd --> ...
#   ... --link-to--> /$INST_OPT/brother_${MODEL}_printer_en.ppd
# /usr/(lib|lib64)/cups/filter/brother_lpdwrapper_${MODEL} --> ...
#   ... --link-to--> /$INST_OPT/brother_lpdwrapper_${MODEL}
#
# Creating a symlink to "brother_lpdwrapper_${MODEL}" is utterly
# important. If we were to copy the lpdwrapper to CUPS filter directory
# instead of creating a symlink, the printing functionality would not
# work. Evidently, the actual lpdwrapper uses relative paths to access
# the LPR driver files installed by brother-dcp8410-lpr:
#
# /opt/brother/Printers/${MODEL}/
# |-- cupswrapper/
# |   |-- brother_${MODEL}_printer_en.ppd
# |   `-- brother_lpdwrapper_${MODEL}      <-- The LPD wrapper
# |-- lpd/                                 <-- LPD driver dir
# |   |-- br${MODEL}filter
# |   |-- brprintconf_${MODEL}
# |   `-- filter_${MODEL}
# `-- inf/
#     `-- ...
#
# For what it's worth, I've opted to also create a symlink to
# "$INST_OPT/brother_${MODEL}_printer_en.ppd" instead of putting
# the file in /usr/share/cups/model/ directory. Because that directory
# is owned by CUPS package and not this one.
chmod 644 $INST_OPT/brother_${MODEL}_printer_en.ppd
mkdir -p $PKG/usr/share/cups/model
ln -s /$INST_OPT/brother_${MODEL}_printer_en.ppd \
      $PKG/usr/share/cups/model/

mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/cups/filter
ln -s /$INST_OPT/brother_lpdwrapper_${MODEL} \
      $PKG/usr/lib${LIBDIRSUFFIX}/cups/filter/

# The "cupswrapper${MODEL}" script is poorly written and is not worth
# hacking to make it work. Instead, the user is notified of the necessary
# actions to take through the README doc.
rm "$INST_OPT/cupswrapper${MODEL}"

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

mkdir -p install
cat $CWD/slack-desc > install/slack-desc

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