#!/bin/bash

# Slackware build script for stellarium
# Copyright 2008 Alan Alberghini <414N@slacky.it>
#
# Based on slackbuild by Michael Bueker <m.bueker@berlin.de>
#
# 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=stellarium
VERSION=${VERSION:-23.4}
BUILD=${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 the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
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 . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -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 {} \;

# CPM dependency retrieval lifting: prepare a cache dir in the format
# expected by CPM with pre-downloaded sources.

# CPM normally puts downloaded deps under this dir
CPM_CACHE_DIR=$TMP/$PRGNAM-$VERSION/build/_deps

CPM_SHOWMYSKY_VERSION=v0.3.1
CPM_QXSLX_VERSION=1.4.6
CPM_INDI_VERSION=1.8.5
CPM_GLM_VERSION=0.9.9.8
CPM_NLOPT_VERSION=v2.7.1

# We need to match dependencies names used in cmake files with the
# actual dependency tarball names
declare -A CPM_SOURCE CPM_DEST
CPM_SOURCE["SHOWMYSKY"]="$CWD/CalcMySky-$CPM_SHOWMYSKY_VERSION.tar.gz"
CPM_SOURCE["QXLSX"]="$CWD/QXlsx-v$CPM_QXSLX_VERSION.tar.gz"
CPM_SOURCE["INDI"]="$CWD/indi-$CPM_INDI_VERSION.zip"
CPM_SOURCE["GLM"]="$CWD/glm-$CPM_GLM_VERSION.7z"
CPM_SOURCE["NLOPT"]="$CWD/nlopt-$CPM_NLOPT_VERSION.tar.gz"
CPM_DEST["SHOWMYSKY"]="$CPM_CACHE_DIR/showmysky-qt5-subbuild/showmysky-qt5-populate-prefix/src/$CPM_SHOWMYSKY_VERSION.tar.gz"
CPM_DEST["QXLSX"]="$CPM_CACHE_DIR/qxlsxqt5-subbuild/qxlsxqt5-populate-prefix/src/v$CPM_QXSLX_VERSION.tar.gz"
CPM_DEST["INDI"]="$CPM_CACHE_DIR/indiclient-subbuild/indiclient-populate-prefix/src/v$CPM_INDI_VERSION.zip"
CPM_DEST["GLM"]="$CPM_CACHE_DIR/glm-subbuild/glm-populate-prefix/src/glm-$CPM_GLM_VERSION.7z"
CPM_DEST["NLOPT"]="$CPM_CACHE_DIR/nlopt-subbuild/nlopt-populate-prefix/src/$CPM_NLOPT_VERSION.tar.gz"

for dep in "${!CPM_SOURCE[@]}"
do
	mkdir -p "$(dirname "${CPM_DEST[$dep]}")"
	ln -s "${CPM_SOURCE[$dep]}" "${CPM_DEST[$dep]}"
done

# End of CPM deps management

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DPYTHON_EXECUTABLE=/usr/bin/python3 \
    -DCMAKE_INSTALL_LIBDIR=/usr/lib${LIBDIRSUFFIX} \
    -DCMAKE_INSTALL_MANDIR=/usr/man \
    -DCMAKE_BUILD_TYPE=Release ..
  make
  make install DESTDIR=$PKG
cd -

# Don't ship .la files:
rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la

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

# upstream doesn't honor the CMAKE_INSTALL_MANDIR. Move files manually, for now
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

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  CREDITS.md COPYING ChangeLog README.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