#!/bin/bash

# Slackware build script for Cemu 

# Copyright 2022 Nathaniel Russell <naterussell83@gmail.com><Texas, USA>
# 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.

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

PRGNAM=Cemu
SRCNAM=$PRGNAM-v2.0-1
PRGVER=${PRGVER:-"2.0-1"}
VERSION=${VERSION:-2.0}
CUBEB=${CUBEB:-dc511c6b3597b6384d28949285b9289e009830ea}
GOOGLETEST=${GOOGLETEST:-800f5422ac9d9e0ad59cd860a2ef3a679588acb4}
SANITIZERSCMAKE=${SANITIZERSCMAKE:-aab6948fa863bc1cbe5d0850bc46b9ef02ed4c1a}
VULKAN=${VULKAN:-715673702f5b18ffb8e5832e67cf731468d32ac6}
VCPKG=${VCPKG:-9b22b40c6c61bf0da2d46346dd44a11e90972cc9}
ZARCHIVE=${ZARCHIVE:-48914a07df3c213333c580bb5e5bb3393442ca5b}
BUILD=${BUILD:-1}
TAG=${TAG:-_njr}
PKGTYPE=${PKGTYPE:-tgz}

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

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

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

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 $SRCNAM
tar xvf $CWD/$SRCNAM.tar.?z

# Cemu has quite a few external dependencies, we need to extract them to the correct location.
tar xvf $CWD/cubeb-$CUBEB.tar.gz -C \
  $DEPS/cubeb --strip-components 1
tar xvf $CWD/googletest-$GOOGLETEST.tar.gz -C \
  $DEPS/cubeb/googletest --strip-components 1
tar xvf $CWD/sanitizers-cmake-$SANITIZERSCMAKE.tar.gz -C \
  $DEPS/cubeb/cmake/sanitizers-cmake --strip-components 1
tar xvf $CWD/Vulkan-Headers-$VULKAN.tar.gz -C \
  $DEPS/Vulkan-Headers --strip-components 1
tar xvf $CWD/vcpkg-$VCPKG.tar.gz -C \
  $DEPS/vcpkg --strip-components 1
tar xvf $CWD/ZArchive-$ZARCHIVE.tar.gz -C \
  $DEPS/ZArchive --strip-components 1

# Cemu checks for external components by checking for their .git files.
# Since these are not included when we downloaded the commit tarballs, we'll create them.
echo "gitdir: ../../.git/modules/cubeb" > $DEPS/cubeb/.git
echo "gitdir: ../../.git/modules/Vulkan-Headers" > $DEPS/Vulkan-Headers/.git 
echo "gitdir: ../../.git/modules/vcpkg" > $DEPS/vcpkg/.git
echo "gitdir: ../../.git/modules/ZArchive" > $DEPS/ZArchive/.git

cd $PRGNAM-$PRGVER
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DLIB_SUFFIX=${LIBDIRSUFFIX} \
    -DMAN_INSTALL_DIR=/usr/man \
    -DCMAKE_BUILD_TYPE=Release ..
  make
  make install/strip DESTDIR=$PKG
cd ..

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

mv $PKG/usr/share/man $PKG/usr
find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz  ; rm $i ; done

# Install hicolor
for size in $(find /usr/share/icons/hicolor -type d -mindepth 1 -maxdepth 1 -exec basename {} \;); do
    if [ -d assets/unix-icons/hicolor/${size} ]; then
        cp -a assets/unix-icons/hicolor/${size} $PKG/usr/share/icons/hicolor/${size}
    fi
done

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  CONTRIBUTING* README* license.txt \
  $PKG/usr/doc/$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
zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh

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