#!/bin/bash

# Slackware build script for xu4

# Written by B. Watson (urchlay@slackware.uk)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# 20211012 bkw: BUILD=3,
# - new-style icon.
# - binary in /usr/games.
# - man page in section 6.
# - disable Alt-x keystroke (it crashes the game).
# - "Press Alt-x to quit" => "Close window to quit".

# TODO: make Alt-x stop crashing the game. It seems to work correctly
# only at the main menu, not while playing. Disabled it for now.

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

PRGNAM=xu4
VERSION=${VERSION:-20130612_svn}
BUILD=${BUILD:-3}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

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

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"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.xz
cd $PRGNAM-$VERSION
chown -R root:root .
find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
        \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+

# There actually are some executables in the lib dir. If there hadn't
# been, I would have left it as /usr/lib even on 64-bit, or better yet
# change to /usr/share. As it is, it has to be /usr/lib64 on 64-bit.
LIBDIR=/usr/lib$LIBDIRSUFFIX
PKGLIBDIR=$PKG/$LIBDIR

# Fix path to "profiles/" dir used by -p option. Patch makes it use
# ~/.xu4/profiles/ rather than ./profiles off the current dir.
patch -p1 < $CWD/profile_path.diff

# Fix hard-coded libdir. Ugh.
sed -i -e "s,/usr/lib,$LIBDIR," src/u4file.cpp

# Stop u4 from writing border.png in the current dir (it never *reads* it!)
sed -i -e '/border\.png/s,^,//,' src/imagemgr.cpp

# The libxml2 in Slack 14.2 is pickier than the one in 14.1, and fails to
# validate the game's XML files. So:
sed -i '/#define *DEFAULT_VALIDATE_XML/s,1,0,' src/settings.h

# Patch for GCC 7
patch -p1 < $CWD/gcc7.patch

# 20211012 bkw: work around a bug. Disable Alt-X as it crashes the
# game. Tell the user to close the window to quit, instead.
patch -p1 < $CWD/disable_alt_x.diff

# The -DNPERF stops u4 from creating a debug/ in the current dir.
make -C src DEBUGCXXFLAGS="-DNPERF $SLKCFLAGS" prefix=/usr libdir=$PKGLIBDIR
make -C src install prefix=$PKG/usr bindir=$PKG/usr/games libdir=$PKGLIBDIR

find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# If we have the official release rather than the "dragon" one, repackage
# it with the same layout as the dragon release. Note that the official
# release isn't the default because there's no direct download link for
# the .info file (the site requires javascript + registration).
if [ -e $CWD/UltimaIV.zip ]; then
  sh $CWD/repackage.sh $CWD/UltimaIV.zip
fi

# The game data. This is the zip file, not the self-extracting exe (the
# exe lacks the documentation, for one thing).
cat $CWD/ultima4.zip > $PKGLIBDIR/u4/ultima4.zip

# Replace stock .desktop file with one that validates.
cat $CWD/u4.desktop > $PKG/usr/share/applications/u4.desktop

# These files should be (but aren't) installed by "make install". Without
# them, we get no music!
install -m0644 mid/*.it $PKGLIBDIR/u4/music/

# Remove execute permission from data files. Grr.
chmod 644 $PKG/usr/share/pixmaps/* $PKG/usr/share/applications/*
find $PKGLIBDIR \
  -type f -a \
  \( -name \*.mid -o -name \*.vga -o -name \*.png -o \
     -name \*.xml -o -name \*.dtd -o -name \*.ogg \) \
  -print0 | xargs -0 chmod 644

# 20211012 bkw: new-style icon...
for i in $CWD/icons/*.png; do
  px=$( basename $i | cut -d. -f1 )
  size=${px}x${px}
  dir=$PKG/usr/share/icons/hicolor/$size/apps
  mkdir -p $dir
  cat $i > $dir/u4.png
done

rm -f $PKG/usr/share/pixmaps/u4.png
ln -s ../icons/hicolor/64x64/apps/u4.png $PKG/usr/share/pixmaps/u4.png

# Docs. N.B. we don't need border.png.
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/developers
cp -a *.html AUTHORS COPYING README $PKG/usr/doc/$PRGNAM-$VERSION
cp -a doc/* $PKG/usr/doc/$PRGNAM-$VERSION/developers
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# Include the upgrade (and extract its docs) if we have it.
if [ -e $CWD/u4upgrad.zip ]; then
  cat $CWD/u4upgrad.zip > $PKGLIBDIR/u4/u4upgrad.zip
  cd $PKG/usr/doc/$PRGNAM-$VERSION
  unzip $CWD/u4upgrad.zip Readme.txt
  mv Readme.txt Readme-Upgrade.txt
  cd -
fi

# Include the PDF docs, if we have them.
if [ -e $CWD/ultima4_scanned_docs.zip ]; then
  mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/pdf
  cd $PKG/usr/doc/$PRGNAM-$VERSION/pdf
  unzip $CWD/ultima4_scanned_docs.zip '*.pdf'
  mv ultima4_scanned_docs/Ultima_IV_-_Cluebook_-_PC.pdf Hints.pdf
  mv ultima4_scanned_docs/Ultima_IV_-_Manual_-_PC.pdf History.pdf
  mv ultima4_scanned_docs/Ultima_IV_-_Spellbook_-_PC.pdf Wisdom.pdf
  rm -rf ultima4_scanned_docs
  cd -
fi

# Include the original Ultima IV docs.
cd $PKG/usr/doc/$PRGNAM-$VERSION
unzip $CWD/ultima4.zip '*.txt' '*.doc' '*.bmp' '*.jpg' || true

# These docs only apply to running the original game on DOS or Windows. Bye.
rm -f Readme.txt Readme.doc

# The Word versions of the docs don't really offer much improvement
# over the plain text ones, but here they are.
mkdir ms_word_docs
mv *.doc ms_word_docs

# Fix permissions and line endings.
[ -e Map.bmp ] && chmod 644 Map.bmp
[ -e Map.jpg ] && chmod 644 Map.jpg
chmod 644 *.txt ms_word_docs/*.doc
sed -i 's/\r//' *.txt
cd -

# I hate packages called "xfoo" whose binaries are called "foo".
ln -s u4 $PKG/usr/games/$PRGNAM

# I also hate binaries that take options but have no man pages, so here's
# the one I made. Enjoy.
mkdir -p $PKG/usr/man/man6
sed "s/@VERSION@/$VERSION/" $CWD/u4.6 | gzip -9c - > $PKG/usr/man/man6/u4.6.gz
ln -s u4.6.gz $PKG/usr/man/man6/$PRGNAM.6.gz

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