#!/bin/bash

# Slackware build script for higan

# Based on bsnes SlackBuild by Erik Hanson <email removed>
# Maintained by Gabriel Magno <email removed>
# Modified by Johannes Schoepfer <email removed>
# Modified again & now maintained by B. Watson <yalhcru@gmail.com>

# Copyright 2013 Gabriel Magno, Belo Horizonte, MG, Brazil
# 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.

# 20200907 bkw: upstream source moved and changed to .tar.gz, get
#               rid of p7zip dependency. BUILD=2.
# 20200529 bkw: add "can't update version" note to README.
# 20181211 bkw:
# This update would not have happened without assistance and moral support
# from Yossi Ne'eman. Thanks!
# - Take over maintenance.
# - Update for v110.
# - Use the gtk frontend, not the *broken* qt one.
# - Make OpenAL dep optional & autodetected (and OPENAL=no to force-disable).
# - Add OSS (default no) and PULSE (default yes) env vars.
# - Fix permissions of the stuff installed to /usr/share/higan: everything
#   was executable, ugh.
# - Install binary in /usr/games (it's a game system emulator, people).
# - Update the README, include link to the semi-official doc site.
# - Update slack-desc with current list of supported systems.
# - Add man pages. Note to SBo admins: please don't remove my *.rst man
#   page sources!

PRGNAM=higan
VERSION=${VERSION:-110}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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

CWD=$(pwd)
TMP=${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

SRCNAM=${PRGNAM}_v${VERSION}-source

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION

# Bletcherous permissions, please don't replace with template code.
find . -type d -exec chmod 0755 {} \+
find . -type f -exec chmod 0644 {} \+
chown -R root:root .

# Thanks to the Arch folks for these patches. -flags allows us to pass
# custom CFLAGS, and -paths makes the emulator look in /usr/share/higan
# for its support files if they're not found in ~/.local/share/higan.
patch -p1 -i $CWD/higan-flags.diff
patch -p1 -i $CWD/higan-paths.diff

# 20181212 bkw: audio system stuff. Upstream doesn't give us a way to
# disable these on the make command line, but hacking this file works:
HACKFILE=higan/target-higan/GNUmakefile

sed 's|/usr/local/lib/qt5/bin/moc|moc-qt5|' -i hiro/GNUmakefile

# Who actually uses OSS?
if [ "${OSS:-no}" = "no" ]; then
  sed -i '/^ *ruby /s,audio\.oss,,' $HACKFILE
fi

# Prepare for 15.0's pure-alsa-system option.
if [ "${PULSE:-yes}" = "no" ] || ! [ -e /usr/bin/pulseaudio ]; then
  sed -i '/^ *ruby /s,audio\.pulse[^ ]*,,g' $HACKFILE
fi

# Upstream *should* autodetect this, but doesn't.
if [ "${OPENAL:-yes}" = "no" ] || ! pkg-config --exists openal; then
  sed -i '/^ *ruby /s,audio\.openal,,' $HACKFILE
fi

# 20181212 bkw: switch from hiro=qt to hiro=gtk. I have no idea why the
# original author chose qt... the qt frontend is known to be buggy in v106
# (per upstream's git log). Issues I ran into were segfaulting on exit,
# and sometimes the Settings tabs wouldn't get painted... which are both
# mentioned as known issues in the git log. There are some post-106
# commits that may fix the qt issues; we'll see, when 107 is released.

CXXFLAGS="$SLKCFLAGS" \
make -C icarus \
  prefix=/usr \
  platform=linux \
  hiro=qt5

CXXFLAGS="$SLKCFLAGS" \
make -C $PRGNAM \
  prefix=/usr \
  platform=linux \
  hiro=qt5

mkdir -p $PKG/usr/games \
  $PKG/usr/share/applications \
  $PKG/usr/share/$PRGNAM \
  $PKG/usr/share/pixmaps

install -s -m 755 $PRGNAM/out/$PRGNAM icarus/out/icarus $PKG/usr/games/
install -m 644 $PRGNAM/target-higan/resource/$PRGNAM.desktop $PKG/usr/share/applications/
install -m 644 $PRGNAM/target-higan/resource/$PRGNAM.png $PKG/usr/share/pixmaps/
cp -dr $PRGNAM/System/* $PKG/usr/share/$PRGNAM/

# Man pages by B. Watson. higan.6 is basically the higan-cli.md from the
# git repo, reformatted as RST & converted to a man page. icarus.6 was
# written from scratch (and doesn't have much to say, you'll notice).
mkdir -p $PKG/usr/man/man6
for i in $PRGNAM icarus; do
  gzip -9c < $CWD/$i.6 > $PKG/usr/man/man6/$i.6.gz
done

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp *.md $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$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:-tgz}