#!/bin/bash

# Slackware build script for ti99sim

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

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

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

PRGNAM=ti99sim
VERSION=${VERSION:-0.16.0}
BUILD=${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.src.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 {} \+

# The actual code doesn't need patching, but the build stuff does.
# Make it show the damn compile commands.
patch -p1 < $CWD/verbose_compile.diff

# Modify the setup script so it doesn't download anything, and so
# it installs stuff in $PKG, not ~/.ti99sim.
patch -p1 < $CWD/setup_paths.diff

# No other way to make it use our flags.
sed -i "s,-g3  *-O3,$SLKCFLAGS," rules.mak

# Binaries already installed stripped. SYS_BIN must be <DATA_DIR>/bin
# to avoid it creating absolute symlinks (we'll create relative ones, below).
make install DATA_DIR=$PKG/opt/$PRGNAM SYS_BIN=$PKG/opt/$PRGNAM/bin

# Modified setup script requires arguments (original one didn't).
sh scripts/setup $CWD $PKG/opt/$PRGNAM

# Names are too generic, prefix with ti99sim- unless already prefixed.
mkdir -p $PKG/usr/bin
for i in $PKG/opt/$PRGNAM/bin/*; do
  src=$( basename $i )
  case "$src" in
    ti99sim-*) dest=$src ;;
    *) dest=ti99sim-$src ;;
  esac
  ln -s ../../opt/$PRGNAM/bin/$src $PKG/usr/bin/$dest
done

# Icon cut from TI logo, found here:
# https://logos.fandom.com/wiki/Texas_Instruments
for px in 16 22 32 48 64 128; do
  size="${px}x${px}"
  dir=$PKG/usr/share/icons/hicolor/$size/apps
  mkdir -p $dir
  convert -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

# .desktop file by SlackBuild author. It's not that useful since there's no
# way to attach disk images or cartridges to the emulator after it starts.
# The .desktop file just starts it up with no media, you can plunk around
# in BASIC but not save your work. Have to use --dsk1 and other options
# to actually do anything fun.
mkdir -p $PKG/usr/share/applications
cat $CWD/$PRGNAM.desktop > $PKG/usr/share/applications/$PRGNAM.desktop

PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKGDOC
cp -a doc/* $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