#!/bin/bash

# Slackware build script for munt

# Copyright 2017 Dugan Chen Canada
# Copyright 2023 B. Watson
# 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.

# 20230410 bkw:
# - new maintainer.
# - update for v2.7.0 (sourceforge => github).
# - include (some of) the ROMs in the package.
# - add the mt32emu_alsadrv binaries (mt32d, xmt32).
# - patch everything to use /usr/share/munt/roms/ as default path.
#   user can still change this in the UI as needed, I just don't want
#   it defaulting to ~/roms/ (need this so we can package the ROMs).
# - add doinst.sh, since the new version has icons and a .desktop.
# - add setcap stuff for jack.
# - update README to document jack optional dep and the fact that the
#   ROMs are included. also mention the actual binary names, since
#   neither one's called "munt".

# TODO someday: man pages.

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

PRGNAM=munt
VERSION=${VERSION:-2.7.0}
BUILD=${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

# 20230411 bkw: The various components have separate version numbers,
# and it looks like upstream's tags are named after whichever
# component was released last. The mt32emu_qt_1_11_1 tag includes
# the previous release (2.7.0) of mt32emu. This is kinda confusing,
# but whatever.
GIT_TAG=${GIT_TAG:-mt32emu_qt_1_11_1}

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 $PRGNAM-$GIT_TAG
tar xvf $CWD/$PRGNAM-$GIT_TAG.tar.gz
cd $PRGNAM-$GIT_TAG
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 {} \+

# 20230411 bkw: Patch mt32emu-qt, mt32emu-smf2wav, mt32d, xmt32 to
# look for ROMs in a systemwide directory (which is where we'll place
# the ROMs, below).
patch -p1 < $CWD/system_rom_path.diff

# Allow mt32d, xmt32 to build in-tree, without the library already
# installed. Also apply our SLKCFLAGS.
sed -i \
    -e "s,-O2,$SLKCFLAGS -I../build/mt32emu/include," \
    -e "s,-lmt32emu,-L../build/mt32emu -lmt32emu," \
    mt32emu_alsadrv/Makefile

# 20230411 bkw: fix desktop-file-validate nitpick (a "hint", not an error).
sed -i '/^Categories/s,$,Audio;,' mt32emu_qt/res/mt32emu-qt.desktop

# 20230411 bkw: cmake accepts and ignores (!) -DCMAKE_INSTALL_DOCDIR.
# Also there's no way to disable jack, if it's autodetected.
mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DLIB_INSTALL_DIR=/usr/lib${LIBDIRSUFFIX} \
    -DCMAKE_BUILD_TYPE=Release .. \
    -Dlibmt32emu_SHARED=ON
  make
  make install/strip DESTDIR=$PKG
cd ..

# This stuff isn't built by cmake. It's considered outdated, but at least
# the mt32d binary might be useful for a headless/console-only system.
make -C mt32emu_alsadrv
install -s -m0755 mt32emu_alsadrv/{mt32d,xmt32} $PKG/usr/bin

### Extract and install the ROMs.

PKGROMS=$PKG/usr/share/$PRGNAM/roms
mkdir -p $PKGROMS

# The ROM zip files have at least 2 possible names each, depending on
# what was used to download them. The URLs have spaces in them. The
# spec says spaces have to be hex-escaped as %20. Plus, we can't have
# spaces in the URLs in our .info files anyway: it would break every
# tool that parses .info files, plus it would prevent curl from being
# able to download them (it refuses to accept spaces in URLs).

# So DOWNLOAD has the %20's in the URLs. But wget will "helpfully"
# transform them back into spaces. On the other hand, "curl -O"
# will save them as-is. I don't know what various browsers do, but
# hopefully I've covered it here...

ok=0
for i in \
  'Roland - CM32L - CONTROL.1989-12-05.v1.02.ROM.zip' \
  'Roland%20-%20CM32L%20-%20CONTROL.1989-12-05.v1.02.ROM.zip'
do
  if [ -e "$CWD/$i" ]; then
    unzip -p "$CWD/$i" \
      "Roland - CM32L - CONTROL.1989-12-05.v1.02.ROM" \
      > $PKGROMS/CM32L_CONTROL.ROM
    ok=1
    break
  fi
done

[ "$ok" = "0" ] && echo "*** can't find CM32L control ROM zip file" && exit 1

ok=0
for i in \
  'Roland - CM32L - PCM Maskrom.ROM.zip' \
  'Roland%20-%20CM32L%20-%20PCM%20Maskrom.ROM.zip'
do
  if [ -e "$CWD/$i" ]; then
    unzip -p "$CWD/$i" \
      "Roland - CM32L - PCM Maskrom.ROM" \
      > $PKGROMS/CM32L_PCM.ROM
    ok=1
    break
  fi
done

[ "$ok" = "0" ] && echo "*** can't find CM32L PCM ROM zip file" && exit 1

# We need 3 files from this one, and 2 of them have to be
# interleaved... wrote a little tool to do the job. Only
# including the v1.0.7 control ROM; it's the newest version
# in the zip file. Also, in case something saves the file with
# the ( character hex-escaped, allow for it.
ok=0
for i in \
  'Roland MT32 (various OS _ extra ROMs.zip' \
  'Roland%20MT32%20(various%20OS%20_%20extra%20ROMs.zip' \
  'Roland%20MT32%20%28various%20OS%20_%20extra%20ROMs.zip'
do
  if [ -e "$CWD/$i" ]; then
    unzip -p "$CWD/$i" r15449121.ic37.bin > $PKGROMS/MT32_PCM.ROM
    unzip "$CWD/$i" mt32_1.0.7.ic26.bin mt32_1.0.7.ic27.bin

    # The ROMs are stored on 2 chips, one with the even-numbered
    # addresses and one with the odd. In theory, munt can use them
    # as-is (the source called them "Mux0" and "Mux1" ROMs), but
    # I couldn't get that to work. Easy enough to merge them together.
    gcc -Wall -O2 -o interleave "$CWD/interleave.c"
    ./interleave mt32_1.0.7.ic27.bin mt32_1.0.7.ic26.bin $PKGROMS/MT32_CONTROL.ROM

    ok=1
    break
  fi
done

[ "$ok" = "0" ] && echo "*** can't find MT32 ROM zip file" && exit 1

### ROMs extracted/installed, back to regular SBo style stuffs.

PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKG/usr/doc
mv $PKG/usr/share/doc/$PRGNAM $PKGDOC
rm -rf $PKG/usr/share/doc
cp -a README* $PKGDOC
mkdir -p $PKGDOC/mt32emu_alsadrv
cp -a mt32emu_alsadrv/*.txt $PKGDOC/mt32emu_alsadrv
cat $CWD/$PRGNAM.SlackBuild > $PKGDOC/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/doinst.sh > $PKG/install/doinst.sh

WITHJACK=WITHOUT

# Only add capability stuff if not disabled, and if JACK support was
# included.
if pkg-config --exists jack && [ "${SETCAP:-yes}" = "yes" ]; then
  WITHJACK=WITH
  cat $CWD/setcap.sh >> $PKG/install/doinst.sh
  # Only allow execution by audio group
  chown root:audio $PKG/usr/bin/mt32emu-qt
  chmod 0750 $PKG/usr/bin/mt32emu-qt
fi

sed "s,@WITHJACK@,$WITHJACK," < $CWD/slack-desc > $PKG/install/slack-desc

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