#!/bin/bash

# Slackware build script for ovcc

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

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

# This started out as a Windows app, it expects everything to be
# in the current directory (its .ini file, ROMs, "paks" which are
# loadable shared libs). So use a wrapper script to symlink up a dir
# in the user's $HOME, and keep the real binary out of $PATH.

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

PRGNAM=ovcc
VERSION=${VERSION:-1.6.0+20230510_f6c395c}
BUILD=${BUILD:-1}
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 {} \+

# Do not trust precompiled stuff.
rm -f testlib mpu/flt

# Build everything stripped.
sed -i '/^LDFLAGS /s|=|= -Wl,-s|' Makefile.common

LIBDIR=/usr/lib$LIBDIRSUFFIX/$PRGNAM

# Multiple Makefiles, no DESTDIR support.
runmake() {
  local destdir="$1"
  [ -n "$1" ] && shift
  make \
    OPT="$SLKCFLAGS" \
    prefix=$destdir/usr \
    LIBDIR=$destdir/$LIBDIR \
    EXEDIR=$destdir/usr/libexec/$PRGNAM \
    "$@"
}

runmake
runmake $PKG install

# Shared libs are supposed to be +x.
chmod 755 $PKG/usr/lib*/$PRGNAM/*.so

# Wrapper script.
mkdir -p $PKG/usr/games
sed "s,@64@,$LIBDIRSUFFIX,g" $CWD/$PRGNAM.sh > $PKG/usr/games/$PRGNAM
chmod +x $PKG/usr/games/$PRGNAM

# ROMs. Same as what MAME/MESS uses.
# from grepping the source, it needs these ROMs:
# coco3.rom (coco3.zip; always required)
# disk11.rom (coco3.zip; needed for libfd502.so)
# rgbdos.rom (disk11.rom; needed for libharddisk.so, can be used by libfd502.so)
# orch90.rom (coco_orch90.zip; liborch90.so)
# hdbdwbck.rom (libbecker.so; coco3_hdb1.zip)

unzip $CWD/coco3.zip -d $PKG/$LIBDIR
unzip -p $CWD/coco_orch90.zip '*.ccc' > $PKG/$LIBDIR/orch90.rom
unzip -p $CWD/coco3_hdb1.zip '*.rom' > $PKG/$LIBDIR/hdbdwbck.rom
# Not 100% sure this is the correct ROM, but it seems to work:
cat $CWD/disk11.rom > $PKG/$LIBDIR/rgbdos.rom

# Icon converted from ovcc.app/Contents/Resources/Icon.icns. Use
# adaptive resize because with plain -resize, the 16x16 and 22x22
# icons are just a smear of grey. They still look awful though. But
# upstream's windows icon (OVCC/CoCo/ovcc.ico) looks just as bad.
for px in 16 22 32 48 64 96 128 256; do
  size=${px}x${px}
  dir=$PKG/usr/share/icons/hicolor/$size/apps
  mkdir -p $dir
  convert -adaptive-resize $size $CWD/$PRGNAM.png $dir/$PRGNAM.png
done

mkdir -p $PKG/usr/share/pixmaps
ln -s ../icons/hicolor/48x48/apps/$PRGNAM.png $PKG/usr/share/pixmaps/$PRGNAM.png

# man page by SlackBuild author. I wasn't going to do this, but I can't find
# any documentation at all on actually using ovcc, so I had to trial-and-error.
# Hopefully documenting my results will save someone some time.
mkdir -p $PKG/usr/man/man6
gzip -9c < $CWD/$PRGNAM.6 > $PKG/usr/man/man6/$PRGNAM.6.gz

# .desktop file by SlackBuild author.
mkdir -p $PKG/usr/share/applications
cat $CWD/$PRGNAM.desktop > $PKG/usr/share/applications/$PRGNAM.desktop

# Precious little documentation. README.md is mostly install instructions,
# but it's all we have.
PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKGDOC
cp -a README.md $PKGDOC
cat $CWD/$PRGNAM.SlackBuild > $PKGDOC/$PRGNAM.SlackBuild

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