#!/bin/bash
#
# this should be run from the src directory, the layout is supposed to
# look like this:
#.../src/subsurface
#       /libgit2
#       /marble-source
#       /libdivecomputer
#
# the script will build these three libraries from source, even if
# they are installed as part of the host OS since we have seen
# numerous cases where building with random versions (especially older,
# but sometimes also newer versions than recommended here) will lead
# to all kinds of unnecessary pain
#
# it installs the libraries and subsurface in the install-root subdirectory
# of the current directory (except on Mac where the Subsurface.app ends up
# in subsurface/build

# create a log file of the build
exec 1> >(tee build.log) 2>&1

SRC=$(pwd)
PLATFORM=$(uname)

if [[ ! -d "subsurface" ]] ; then
	echo "please start this script from the directory containing the Subsurface source directory"
	exit 1
fi

mkdir -p install-root
INSTALL_ROOT=$SRC/install-root

# make sure we find our own packages first (e.g., libgit2 only uses pkg_config to find libssh2)
export PKG_CONFIG_PATH=$INSTALL_ROOT/lib/pkgconfig:$PKG_CONFIG_PATH

echo Building in $SRC, installing in $INSTALL_ROOT

# if on a mac, let's build our own libssh2

if [ $PLATFORM = Darwin ] ; then
	echo Building libssh2
	if [ ! -d libssh2 ] ; then
		if [[ $1 = local ]] ; then
			git clone $SRC/../libssh2 libssh2
		else
			git clone git://github.com/libssh2/libssh2
		fi
	fi
	cd libssh2
	mkdir -p build
	cd build
	cmake -DCMAKE_INSTALL_PREFIX=$INSTALL_ROOT -DCMAKE_BUILD_TYPE=Release \
		-DBUILD_EXAMPLES=OFF -DBUILD_TESTING=OFF -DBUILD_SHARED_LIBS=ON \
		..
	cmake --build . --target install

	# in order for macdeployqt to do its job correctly, we need the full path in the dylib ID
	cd $INSTALL_ROOT/lib
	NAME=$(otool -L libssh2.dylib | grep -v : | head -1 | cut -f1 -d\  | tr -d '\t')
	echo $NAME | grep / > /dev/null 2>&1
	if [ $? -eq 1 ] ; then
		install_name_tool -id "$INSTALL_ROOT/lib/$NAME" "$INSTALL_ROOT/lib/$NAME"
	fi
fi

# build libgit2

cd $SRC

if [ ! -d libgit2 ] ; then
	if [[ $1 = local ]] ; then
		git clone $SRC/../libgit2 libgit2
	else
		git clone git://github.com/libgit2/libgit2
	fi
fi
cd libgit2
# let's build with a recent enough version of master for the latest features
git fetch origin
if ! git checkout v0.23.1 ; then
	echo "Can't find the right tag in libgit2 - giving up"
	exit 1
fi
mkdir -p build
cd build
cmake -DCMAKE_INSTALL_PREFIX=$INSTALL_ROOT -DCMAKE_BUILD_TYPE=Release -DBUILD_CLAR=OFF ..
make -j4
make install

if [ $PLATFORM = Darwin ] ; then
	# in order for macdeployqt to do its job correctly, we need the full path in the dylib ID
	cd $INSTALL_ROOT/lib
	NAME=$(otool -L libgit2.dylib | grep -v : | head -1 | cut -f1 -d\  | tr -d '\t')
	echo $NAME | grep / > /dev/null 2>&1
	if [ $? -eq 1 ] ; then
		install_name_tool -id "$INSTALL_ROOT/lib/$NAME" "$INSTALL_ROOT/lib/$NAME"
	fi
fi

cd $SRC

# build libdivecomputer

if [ ! -d libdivecomputer ] ; then
	if [[ $1 = local ]] ; then
		git clone $SRC/../libdivecomputer libdivecomputer
	else
		git clone -b Subsurface-branch git://subsurface-divelog.org/libdc libdivecomputer
	fi
fi
cd libdivecomputer
git pull --rebase
if ! git checkout Subsurface-branch ; then
	echo "can't check out the Subsurface-branch branch of libdivecomputer -- giving up"
	exit 1
fi
if [ ! -f configure ] ; then
	autoreconf --install
fi
./configure --prefix=$INSTALL_ROOT
make -j4
make install

cd $SRC

# build libssrfmarblewidget

if [ ! -d marble-source ] ; then
	if [[ $1 = local ]] ; then
		git clone $SRC/../marble-source marble-source
	else
		git clone -b Subsurface-branch git://subsurface-divelog.org/marble marble-source
	fi
fi
cd marble-source
git pull --rebase
if ! git checkout Subsurface-branch ; then
	echo "can't check out the Subsurface-branch branch of marble -- giving up"
	exit 1
fi
mkdir -p build
cd build
if [ $PLATFORM = Darwin ] ; then
	export CMAKE_PREFIX_PATH=~/Qt/5.5/clang_64/lib/cmake
fi
cmake -DCMAKE_BUILD_TYPE=Release -DQTONLY=TRUE -DQT5BUILD=ON \
	-DCMAKE_INSTALL_PREFIX=$INSTALL_ROOT \
	-DBUILD_MARBLE_TESTS=NO \
	-DWITH_DESIGNER_PLUGIN=NO \
	-DBUILD_MARBLE_APPS=NO \
	$SRC/marble-source
cd src/lib/marble
make -j4
make install

if [ $PLATFORM = Darwin ] ; then
	# in order for macdeployqt to do its job correctly, we need the full path in the dylib ID
	cd $INSTALL_ROOT/lib
	NAME=$(otool -L libssrfmarblewidget.dylib | grep -v : | head -1 | cut -f1 -d\  | tr -d '\t' | cut -f3 -d/ )
	echo $NAME | grep / > /dev/null 2>&1
	if [ $? -eq 1 ] ; then
		install_name_tool -id "$INSTALL_ROOT/lib/$NAME" "$INSTALL_ROOT/lib/$NAME"
	fi
fi

# build grantlee

cd $SRC

if [ ! -d grantlee ] ; then
	if [[ $1 = local ]] ; then
		git clone $SRC/../grantlee grantlee
	else
		git clone git://subsurface-divelog.org/grantlee
	fi
fi
cd grantlee
if ! git checkout v5.0.0 ; then
	echo "can't check out v5.0.0 of grantlee -- giving up"
	exit 1
fi
mkdir -p build
cd build
cmake -DCMAKE_BUILD_TYPE=Release \
	-DCMAKE_INSTALL_PREFIX=$INSTALL_ROOT \
	-DBUILD__TESTS=NO \
	$SRC/grantlee
make -j4
make install

# finally, build Subsurface

if [ $PLATFORM = Darwin ] ; then
	SH_LIB_EXT=dylib
else
	SH_LIB_EXT=so
fi

cd $SRC/subsurface
mkdir -p build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug .. \
	-DLIBGIT2_INCLUDE_DIR=$INSTALL_ROOT/include \
	-DLIBGIT2_LIBRARIES=$INSTALL_ROOT/lib/libgit2.$SH_LIB_EXT \
	-DLIBDIVECOMPUTER_INCLUDE_DIR=$INSTALL_ROOT/include \
	-DLIBDIVECOMPUTER_LIBRARIES=$INSTALL_ROOT/lib/libdivecomputer.a \
	-DMARBLE_INCLUDE_DIR=$INSTALL_ROOT/include \
	-DMARBLE_LIBRARIES=$INSTALL_ROOT/lib/libssrfmarblewidget.$SH_LIB_EXT \
	-DNO_PRINTING=OFF \
	-DUSE_LIBGIT23_API=1

if [ $PLATFORM = Darwin ] ; then
	rm -rf Subsurface.app
fi

LIBRARY_PATH=$INSTALL_ROOT/lib make -j4

if [ $PLATFORM = Darwin ] ; then
	LIBRARY_PATH=$INSTALL_ROOT/lib make install
fi