# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

PYTHON_COMPAT=( python3_{6,7,8} )
WEBAPP_OPTIONAL=yes
WEBAPP_MANUAL_SLOT=yes

# Short package version
SPV="$(ver_cut 1-2)"
inherit flag-o-matic java-pkg-opt-2 python-single-r1 qmake-utils toolchain-funcs cmake virtualx webapp

DESCRIPTION="The Visualization Toolkit"
HOMEPAGE="https://www.vtk.org/"
SRC_URI="
	https://www.vtk.org/files/release/${SPV}/VTK-${PV}.tar.gz
	doc? ( https://www.vtk.org/files/release/${SPV}/vtkDocHtml-${PV}.tar.gz )
	examples? (
		https://www.vtk.org/files/release/${SPV}/VTKData-${PV}.tar.gz
		https://www.vtk.org/files/release/${SPV}/VTKLargeData-${PV}.tar.gz
	)"

LICENSE="BSD LGPL-2"
SLOT="0"
KEYWORDS="~amd64 ~arm ~x86 ~amd64-linux ~x86-linux"
IUSE="all-modules aqua boost doc examples ffmpeg gdal imaging java json mpi
	odbc offscreen postgres python qt5 R rendering tbb tcl theora tk
	video_cards_nvidia views web +X xdmf2"

REQUIRED_USE="
	all-modules? ( python xdmf2 boost )
	java? ( qt5 )
	python? ( ${PYTHON_REQUIRED_USE} )
	tcl? ( rendering )
	examples? ( python )
	tk? ( tcl )
	web? ( python )
	^^ ( X aqua offscreen )"

RDEPEND="
	app-arch/lz4
	dev-cpp/eigen
	dev-db/sqlite
	dev-libs/double-conversion:0=
	dev-libs/expat
	dev-libs/jsoncpp:=
	dev-libs/libxml2:2
	dev-libs/pugixml
	>=media-libs/freetype-2.5.4
	media-libs/glew:0=
	>=media-libs/libharu-2.3.0-r2
	media-libs/libpng:0=
	media-libs/libtheora
	media-libs/mesa
	media-libs/tiff:0
	sci-libs/exodusii
	sci-libs/hdf5:=
	sci-libs/netcdf:0=
	sci-libs/netcdf-cxx:3
	sys-libs/zlib
	virtual/jpeg:0
	virtual/opengl
	x11-libs/libX11
	x11-libs/libXmu
	x11-libs/libXt
	boost? ( dev-libs/boost:=[mpi?] )
	examples? (
		dev-qt/qtcore:5
		dev-qt/qtgui:5
	)
	ffmpeg? ( media-video/ffmpeg )
	gdal? ( sci-libs/gdal )
	java? ( >=virtual/jdk-1.7:* )
	mpi? (
		virtual/mpi[cxx,romio]
		$(python_gen_cond_dep '
			python? ( dev-python/mpi4py[${PYTHON_MULTI_USEDEP}] )
		')
	)
	odbc? ( dev-db/unixODBC )
	offscreen? ( media-libs/mesa[osmesa] )
	postgres? ( dev-db/postgresql:= )
	python? (
		${PYTHON_DEPS}
		$(python_gen_cond_dep '
			dev-python/sip[${PYTHON_MULTI_USEDEP}]
		')
	)
	qt5? (
		dev-qt/designer:5
		dev-qt/qtcore:5
		dev-qt/qtgui:5
		dev-qt/qtopengl:5
		dev-qt/qtsql:5
		dev-qt/qtx11extras:5
		$(python_gen_cond_dep '
			python? ( dev-python/PyQt5[${PYTHON_MULTI_USEDEP}] )
		')
	)
	R? ( dev-lang/R )
	tbb? ( dev-cpp/tbb )
	tcl? ( dev-lang/tcl:0= )
	tk? ( dev-lang/tk:0= )
	video_cards_nvidia? ( x11-drivers/nvidia-drivers[tools,static-libs] )
	web? (
		${WEBAPP_DEPEND}
		$(python_gen_cond_dep '
			dev-python/autobahn[${PYTHON_MULTI_USEDEP}]
			dev-python/constantly[${PYTHON_MULTI_USEDEP}]
			dev-python/hyperlink[${PYTHON_MULTI_USEDEP}]
			dev-python/incremental[${PYTHON_MULTI_USEDEP}]
			dev-python/six[${PYTHON_MULTI_USEDEP}]
			dev-python/twisted[${PYTHON_MULTI_USEDEP}]
			dev-python/txaio[${PYTHON_MULTI_USEDEP}]
			dev-python/zope-interface[${PYTHON_MULTI_USEDEP}]
		')
	)
	xdmf2? ( sci-libs/xdmf2 )
"
DEPEND="${RDEPEND}"
BDEPEND="doc? ( app-doc/doxygen )"

S="${WORKDIR}"/VTK-${PV}

PATCHES=(
	"${FILESDIR}"/${PN}-8.1.0-openmpi-4-compatibility.patch
	"${FILESDIR}"/${P}-qt-5.15.patch # bug 726960
	"${FILESDIR}"/${P}-gcc-10.patch # bug 723374
	"${FILESDIR}"/${P}-fno-common.patch # bug 721048
	"${FILESDIR}"/${P}-py38.patch
)

RESTRICT="test"

pkg_setup() {
	use java && java-pkg-opt-2_pkg_setup
	use python && python-single-r1_pkg_setup
	use web && webapp_pkg_setup
}

src_prepare() {
	cmake_src_prepare

	local x
	# missing: VPIC freerange libproj4 mrmpi sqlite utf8 verdict xmdf2 xmdf3
	for x in expat freetype hdf5 jpeg jsoncpp libharu libxml2 lz4 netcdf png tiff zlib; do
		ebegin "Dropping bundled ${x}"
		rm -r ThirdParty/${x}/vtk${x} || die
		eend $?
	done

	if use doc; then
		einfo "Removing .md5 files from documents."
		rm -f "${WORKDIR}"/html/*.md5 || die "Failed to remove superfluous hashes"
		sed -e "s|\${VTK_BINARY_DIR}/Utilities/Doxygen/doc|${WORKDIR}|" \
			-i Utilities/Doxygen/CMakeLists.txt || die
	fi
}

src_configure() {
	# general configuration
	local mycmakeargs=(
		-Wno-dev
		-DVTK_DIR="${S}"
		-DVTK_INSTALL_LIBRARY_DIR=$(get_libdir)
		-DVTK_INSTALL_PACKAGE_DIR="$(get_libdir)/cmake/${PN}-${SPV}"
		-DVTK_INSTALL_DOC_DIR="${EPREFIX}/usr/share/doc/${PF}"
		-DVTK_DATA_ROOT="${EPREFIX}/usr/share/${PN}/data"
		-DVTK_CUSTOM_LIBRARY_SUFFIX=""
		-DBUILD_SHARED_LIBS=ON
		-DVTK_USE_SYSTEM_AUTOBAHN=ON
		-DVTK_USE_SYSTEM_EXPAT=ON
		-DVTK_USE_SYSTEM_FREETYPE=ON
		-DVTK_USE_SYSTEM_FreeType=ON
		# Use bundled gl2ps (bundled version is a patched version of 1.3.9. Post 1.3.9 versions should be compatible)
		-DVTK_USE_SYSTEM_GL2PS=OFF
		-DVTK_USE_SYSTEM_HDF5=ON
		-DVTK_USE_SYSTEM_JPEG=ON
		-DVTK_USE_SYSTEM_LIBPROJ=OFF
		-DVTK_USE_SYSTEM_LIBXML2=ON
		-DVTK_USE_SYSTEM_LibXml2=ON
		-DVTK_USE_SYSTEM_NETCDF=ON
		-DVTK_USE_SYSTEM_OGGTHEORA=ON
		-DVTK_USE_SYSTEM_PNG=ON
		-DVTK_USE_SYSTEM_TIFF=ON
		-DVTK_USE_SYSTEM_TWISTED=ON
		-DVTK_USE_SYSTEM_XDMF2=OFF
		-DVTK_USE_SYSTEM_XDMF3=OFF
		-DVTK_USE_SYSTEM_ZLIB=ON
		-DVTK_USE_SYSTEM_ZOPE=ON
		-DVTK_USE_SYSTEM_LIBRARIES=ON
		# Use bundled diy2 (no gentoo package / upstream does not provide a Finddiy2.cmake or diy2Config.cmake / diy2-config.cmake)
		-DVTK_USE_SYSTEM_DIY2=OFF
		-DVTK_USE_GL2PS=ON
		-DVTK_USE_LARGE_DATA=ON
		-DVTK_USE_PARALLEL=ON
		-DVTK_EXTRA_COMPILER_WARNINGS=ON
		-DVTK_Group_StandAlone=ON
		-DBUILD_DOCUMENTATION=$(usex doc)
		-DBUILD_EXAMPLES=$(usex examples)
		-DBUILD_VTK_BUILD_ALL_MODULES_FOR_TESTS=off
		-DVTK_BUILD_ALL_MODULES=$(usex all-modules)
		-DUSE_DOCUMENTATION_HTML_HELP=$(usex doc)
		-DVTK_Group_Imaging=$(usex imaging)
		-DVTK_Group_MPI=$(usex mpi)
		-DVTK_Group_Rendering=$(usex rendering)
		-DVTK_Group_Tk=$(usex tk)
		-DVTK_Group_Views=$(usex views)
		-DVTK_Group_Web=$(usex web)
		-DVTK_SMP_IMPLEMENTATION_TYPE="$(usex tbb TBB Sequential)"
		-DVTK_WWW_DIR="${ED}/${MY_HTDOCSDIR}"
		-DVTK_WRAP_JAVA=$(usex java)
		-DVTK_WRAP_PYTHON=$(usex python)
		-DVTK_WRAP_PYTHON_SIP=$(usex python)
		-DVTK_WRAP_TCL=$(usex tcl)
		-DVTK_USE_BOOST=$(usex boost)
		-DUSE_VTK_USE_BOOST=$(usex boost)
		-DModule_vtkInfovisBoost=$(usex boost)
		-DModule_vtkInfovisBoostGraphAlgorithms=$(usex boost)
		-DVTK_USE_ODBC=$(usex odbc)
		-DModule_vtkIOODBC=$(usex odbc)
		-DVTK_USE_OFFSCREEN=$(usex offscreen)
		-DVTK_OPENGL_HAS_OSMESA=$(usex offscreen)
		-DVTK_USE_OGGTHEORA_ENCODER=$(usex theora)
		-DVTK_USE_NVCONTROL=$(usex video_cards_nvidia)
		-DModule_vtkFiltersStatisticsGnuR=$(usex R)
		-DVTK_USE_X=$(usex X)
	# IO
		-DVTK_USE_FFMPEG_ENCODER=$(usex ffmpeg)
		-DModule_vtkIOGDAL=$(usex gdal)
		-DModule_vtkIOGeoJSON=$(usex json)
		-DModule_vtkIOXdmf2=$(usex xdmf2)
		-DBUILD_TESTING=$(usex examples)
	# Apple stuff, does it really work?
		-DVTK_USE_COCOA=$(usex aqua)
	)

	if use java; then
		local javacargs=$(java-pkg_javac-args)
		mycmakeargs+=( -DJAVAC_OPTIONS=${javacargs// /;} )
	fi

	if use mpi; then
		mycmakeargs+=( -DVTK_USE_SYSTEM_MPI4PY=ON )
	fi

	if use python; then
		mycmakeargs+=(
			-DVTK_INSTALL_PYTHON_MODULE_DIR="$(python_get_sitedir)"
			-DPYTHON_INCLUDE_DIR="$(python_get_includedir)"
			-DPYTHON_LIBRARY="$(python_get_library_path)"
			-DSIP_PYQT_DIR="${EPREFIX}/usr/share/sip"
			-DSIP_INCLUDE_DIR="$(python_get_includedir)"
			-DVTK_PYTHON_INCLUDE_DIR="$(python_get_includedir)"
			-DVTK_PYTHON_LIBRARY="$(python_get_library_path)"
			-DVTK_PYTHON_SETUP_ARGS:STRING="--prefix=${EPREFIX} --root=${D}"
			-DVTK_USE_SYSTEM_SIX=ON
		)
	fi

	if use qt5; then
		mycmakeargs+=(
			-DVTK_USE_QVTK=ON
			-DVTK_USE_QVTK_OPENGL=ON
			-DVTK_USE_QVTK_QTOPENGL=ON
			-DQT_WRAP_CPP=ON
			-DQT_WRAP_UI=ON
			-DVTK_INSTALL_QT_DIR="$(basename $(qt5_get_libdir))/qt5/plugins/designer"
			-DDESIRED_QT_VERSION=5
			-DVTK_QT_VERSION=5
			-DQT_MOC_EXECUTABLE="$(qt5_get_bindir)/moc"
			-DQT_UIC_EXECUTABLE="$(qt5_get_bindir)/uic"
			-DQT_INCLUDE_DIR="${EPREFIX}/usr/include/qt5"
			-DQT_QMAKE_EXECUTABLE="$(qt5_get_bindir)/qmake"
			-DVTK_Group_Qt:BOOL=ON
			-DCMAKE_DISABLE_FIND_PACKAGE_Qt5WebKitWidgets=ON
		)
	fi

	if use R; then
		mycmakeargs+=(
			-DR_LIBRARY_BLAS=/usr/$(get_libdir)/R/lib/libR.so
			-DR_LIBRARY_LAPACK=/usr/$(get_libdir)/R/lib/libR.so
		)
	fi

	append-cppflags -D__STDC_CONSTANT_MACROS -D_UNICODE

	use java && export JAVA_HOME="${EPREFIX}/etc/java-config-2/current-system-vm"

	if use mpi; then
		export CC=mpicc
		export CXX=mpicxx
		export FC=mpif90
		export F90=mpif90
		export F77=mpif77
	fi

	cmake_src_configure
}

src_install() {
	use web && webapp_src_preinst

	cmake_src_install

	use java && java-pkg_regjar "${ED}"/usr/$(get_libdir)/${PN}.jar

	# Stop web page images from being compressed
	use doc && docompress -x /usr/share/doc/${PF}/doxygen

	if use tcl; then
		# install Tcl docs
		docinto vtk_tcl
		docinto .
	fi

	# install examples
	if use examples; then
		einfo "Installing examples"
		mv -v {E,e}xamples || die
		dodoc -r examples
		docompress -x /usr/share/doc/${PF}/examples
	fi

	# environment
	cat >> "${T}"/40${PN} <<- EOF || die
		VTK_DATA_ROOT=${EPREFIX}/usr/share/${PN}/data
		VTK_DIR=${EPREFIX}/usr/$(get_libdir)/${PN}-${SPV}
		VTKHOME=${EPREFIX}/usr
		EOF
	doenvd "${T}"/40${PN}

	use web && webapp_src_install
}

# webapp.eclass exports these but we want it optional #534036
pkg_postinst() {
	use web && webapp_pkg_postinst
}

pkg_prerm() {
	use web && webapp_pkg_prerm
}