# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

PYTHON_DEPEND="3:3.2"
EAPI=3

inherit eutils python versionator flag-o-matic toolchain-funcs

IUSE="+game-engine player +elbeem +openexr ffmpeg jpeg2k openal openmp \
	+dds debug fftw jack apidoc sndfile lcms tweak-mode sdl sse \
	redcode +zlib iconv contrib"

LANGS="en ar bg ca cs de el es fi fr hr it ja ko nl pl pt_BR ro ru sr sv uk zh_CN"
for X in ${LANGS} ; do
	IUSE="${IUSE} linguas_${X}"
done

DESCRIPTION="3D Creation/Animation/Publishing System"
HOMEPAGE="http://www.blender.org"
SRC_URI="http://download.blender.org/source/${P}.tar.gz"

SLOT="2.5"
LICENSE="|| ( GPL-2 BL )"
KEYWORDS="~amd64 ~x86"

RDEPEND="virtual/jpeg
	media-libs/libpng
	x11-libs/libXi
	x11-libs/libX11
	media-libs/tiff
	media-libs/libsamplerate
	virtual/opengl
	>=media-libs/freetype-2.0
	virtual/libintl
	media-libs/glew
	dev-cpp/eigen:2
	>=sci-physics/bullet-2.76
	iconv? ( virtual/libiconv )
	zlib? ( sys-libs/zlib )
	sdl? ( media-libs/libsdl[audio,joystick] )
	openexr? ( media-libs/openexr )
	ffmpeg? (
		>=virtual/ffmpeg-0.6.90[x264,mp3,encode,theora]
		jpeg2k? ( >=virtual/ffmpeg-0.6.90[x264,mp3,encode,theora,jpeg2k] )
	)
	openal? ( >=media-libs/openal-1.6.372 )
	fftw? ( sci-libs/fftw:3.0 )
	jack? ( media-sound/jack-audio-connection-kit )
	sndfile? ( media-libs/libsndfile )
	lcms? ( media-libs/lcms )"

DEPEND=">=dev-util/scons-0.98
	apidoc? (
		dev-python/sphinx
		>=app-doc/doxygen-1.5.7[-nodot]
	)
	x11-base/xorg-server
	${RDEPEND}"

# configure internationalization only if LINGUAS have more
# languages than 'en', otherwise must be disabled
if [[ ${LINGUAS} != "en" && -n ${LINGUAS} ]]; then
	DEPEND="${DEPEND}
		sys-devel/gettext"
fi

blend_with() {
	local UWORD="$2"
	[ -z "${UWORD}" ] && UWORD="$1"
	if useq $1; then
		echo "WITH_BF_${UWORD}=1" | tr '[:lower:]' '[:upper:]' \
			>> "${S}"/user-config.py
	else
		echo "WITH_BF_${UWORD}=0" | tr '[:lower:]' '[:upper:]' \
			>> "${S}"/user-config.py
	fi
}

pkg_setup() {
	enable_openmp=0
	if use openmp; then
		if tc-has-openmp; then
			enable_openmp=1
		else
			ewarn "You are using gcc built without 'openmp' USE."
			ewarn "Switch CXX to an OpenMP capable compiler."
			die "Need openmp"
		fi
	fi
	python_set_active_version 3
}

src_prepare() {
	epatch "${FILESDIR}"/${PN}-desktop.patch
	epatch "${FILESDIR}"/${PN}-${SLOT}-doxyfile.patch

	# TODO: write a proper Makefile to replace the borked bmake script
	epatch "${FILESDIR}"/${PN}-${SLOT}-bmake.patch

	# OpenJPEG
	einfo "Removing bundled OpenJPEG ..."
	rm -r extern/libopenjpeg

	# Glew
	einfo "Removing bundled Glew ..."
	rm -r extern/glew
	epatch "${FILESDIR}"/${PN}-${SLOT}-glew.patch

	# Eigen2
	einfo "Removing bundled Eigen2 ..."
	rm -r extern/Eigen2
	epatch "${FILESDIR}"/${PN}-${SLOT}-eigen.patch
}

src_configure() {
	# add system openjpeg into Scons build options.
	cat <<- EOF >> "${S}"/user-config.py
		BF_OPENJPEG="/usr"
		BF_OPENJPEG_INC="/usr/include"
		BF_OPENJPEG_LIB="openjpeg"
	EOF

	# FIX: littlecms includes path aren't specified
	if use lcms; then
		cat <<- EOF >> "${S}"/user-config.py
			BF_LCMS_INC="/usr/include/"
			BF_LCMS_LIB="lcms"
			BF_LCMS_LIBPATH="/usr/lib/"
		EOF
	fi

	# add system sci-physic/bullet into Scons build options.
#	cat <<- EOF >> "${S}"/user-config.py
#		WITH_BF_BULLET=1
#		BF_BULLET="/usr/include"
#		BF_BULLET_INC="/usr/include /usr/include/BulletCollision /usr/include/BulletDynamics /usr/include/LinearMath /usr/include/BulletSoftBody"
#		BF_BULLET_LIB="BulletSoftBody BulletDynamics BulletCollision LinearMath"
#	EOF

	#add iconv into Scons build options.
	if use !elibc_glibc && use !elibc_uclibc && use iconv; then
		cat <<- EOF >> "${S}"/user-config.py
			WITH_BF_ICONV=1
			BF_ICONV="/usr"
		EOF
	fi

	# configure internationalization only if LINGUAS have more
	# languages than 'en', otherwise must be disabled
	[[ -z ${LINGUAS} ]] || [[ ${LINGUAS} == "en" ]] && echo "WITH_BF_INTERNATIONAL=0" >> "${S}"/user-config.py

	# configure Elbeem fluid system
	use elbeem || echo "BF_NO_ELBEEM=1" >> "${S}"/user-config.py

	# configure Tweak Mode
	use tweak-mode && echo "BF_TWEAK_MODE=1" >> "${S}"/user-config.py

	# FIX: Game Engine module needs to be active to build the Blender Player
	if ! use game-engine && use player; then
		elog "Forcing Game Engine [+game-engine] as required by Blender Player [+player]"
		echo "WITH_BF_GAMEENGINE=1" >> "${S}"/user-config.py
	else
		blend_with game-engine gameengine
	fi

	# set CFLAGS used in /etc/make.conf correctly
	echo "CFLAGS=[`for i in ${CFLAGS[@]}; do printf "%s \'$i"\',; done`] " \
		| sed -e "s:,]: ]:" >> "${S}"/user-config.py

	# set CXXFLAGS used in /etc/make.conf correctly
	local FILTERED_CXXFLAGS="`for i in ${CXXFLAGS[@]}; do printf "%s \'$i"\',; done`"
	echo "CXXFLAGS=[${FILTERED_CXXFLAGS}]" | sed -e "s:,]: ]:" >> "${S}"/user-config.py
	echo "BGE_CXXFLAGS=[${FILTERED_CXXFLAGS}]" | sed -e "s:,]: ]:" >> "${S}"/user-config.py

	# reset general options passed to the C/C++ compilers (useless hardcoded flags)
	# FIX: forcing '-funsigned-char' fixes an anti-aliasing issue with menu
	# shadows, see bug #276338 for reference
	echo "CCFLAGS= ['-funsigned-char', '-D_LARGEFILE_SOURCE', '-D_FILE_OFFSET_BITS=64']" >> "${S}"/user-config.py

	# set LDFLAGS used in /etc/make.conf correctly
	local FILTERED_LDFLAGS="`for i in ${LDFLAGS[@]}; do printf "%s \'$i"\',; done`"
	echo "LINKFLAGS=[${FILTERED_LDFLAGS}]" | sed -e "s:,]: ]:" >> "${S}"/user-config.py
	echo "PLATFORM_LINKFLAGS=[${FILTERED_LDFLAGS}]" | sed -e "s:,]: ]:" >> "${S}"/user-config.py

	# reset REL_* variables (useless hardcoded flags)
	cat <<- EOF >> "${S}"/user-config.py
		REL_CFLAGS=[]
		REL_CXXFLAGS=[]
		REL_CCFLAGS=[]
	EOF

	# reset warning flags (useless for NON blender developers)
	cat <<- EOF >> "${S}"/user-config.py
		C_WARN  =[ '-w', '-g0' ]
		CC_WARN =[ '-w', '-g0' ]
		CXX_WARN=[ '-w', '-g0' ]
	EOF

	# detecting -j value from MAKEOPTS
	local NUMJOBS="$( echo "${MAKEOPTS}" | sed -ne 's,.*-j\([[:digit:]]\+\).*,\1,p' )"
	[[ -z "${NUMJOBS}" ]] && NUMJOBS=1 # resetting to -j1 for empty MAKEOPTS

	# generic settings which differ from the defaults from linux2-config.py
	cat <<- EOF >> "${S}"/user-config.py
		BF_OPENGL_LIB='GL GLU X11 Xi GLEW'
		BF_INSTALLDIR="../install"
		WITHOUT_BF_PYTHON_INSTALL=1
		BF_PYTHON="/usr"
		BF_PYTHON_VERSION="3.2"
		BF_PYTHON_ABI_FLAGS=""
		BF_BUILDINFO=0
		BF_QUIET=1
		BF_NUMJOBS=${NUMJOBS}
		BF_LINE_OVERWRITE=0
		WITH_BF_FHS=1
		WITH_BF_BINRELOC=0
		WITH_BF_STATICOPENGL=0
		WITH_BF_OPENMP=${enable_openmp}
	EOF

	# configure WITH_BF* Scons build options
	for arg in \
		'sdl' \
		'apidoc docs' \
		'lcms' \
		'jack' \
		'sndfile' \
		'openexr' \
		'dds' \
		'fftw fftw3' \
		'jpeg2k openjpeg' \
		'openal'\
		'ffmpeg' \
		'ffmpeg ogg' \
		'player' \
		'collada' \
		'sse rayoptimization' \
		'redcode' \
		'zlib' ; do
		blend_with ${arg}
	done

	# enable debugging/testing support
	use debug && echo "BF_DEBUG=1" >> "${S}"/user-config.py
	use test && echo "BF_UNIT_TEST=1" >> "${S}"/user-config.py
}

src_compile() {
	scons || die \
		'!!! Please add "${S}/scons.config" when filing bugs reports \
		to bugs.gentoo.org'

	einfo "Building plugins ..."
	cd "${WORKDIR}"/${P}/release/plugins \
		|| die "dir ${WORKDIR}/${P}/release/plugins do not exist"
	chmod 755 bmake

	# FIX: plugins are built without respecting user's LDFLAGS
	emake \
		CFLAGS="${CFLAGS} -fPIC" \
		LDFLAGS="$(raw-ldflags) -Bshareable" \
		> /dev/null \
		|| die "plugins compilation failed"
}

src_install() {
	# creating binary wrapper
	cat <<- EOF >> "${WORKDIR}/install/blender-${SLOT}"
		#!/bin/sh

		# stop this script if the local blender path is a symlink
		if [ -L \${HOME}/.blender ]; then
			echo "Detected a symbolic link for \${HOME}/.blender"
			echo "Sorry, to avoid dangerous situations, the Blender binary can"
			echo "not be started until you have removed the symbolic link:"
			echo "  # rm -i \${HOME}/.blender"
			exit 1
		fi

		export BLENDER_SYSTEM_SCRIPTS="/usr/share/blender/${SLOT}/scripts"
		export BLENDER_SYSTEM_DATAFILES="/usr/share/blender/${SLOT}/datafiles"
			exec /usr/bin/blender-bin-${SLOT} \$*
	EOF

	# install binaries
	exeinto /usr/bin/
	cp "${WORKDIR}/install/blender" "${WORKDIR}/install/blender-bin-${SLOT}"
	doexe "${WORKDIR}/install/blender-bin-${SLOT}"
	doexe "${WORKDIR}/install/blender-${SLOT}"
	if use player; then
		cp "${WORKDIR}/install/blenderplayer" \
			"${WORKDIR}/install/blenderplayer-${SLOT}"
		doexe "${WORKDIR}/install/blenderplayer-${SLOT}"
	fi

	# install plugins
	exeinto /usr/share/${PN}/${SLOT}/textures
	doexe "${WORKDIR}"/${P}/release/plugins/texture/*.so
	exeinto /usr/share/${PN}/${SLOT}/sequences
	doexe "${WORKDIR}"/${P}/release/plugins/sequence/*.so
	insinto /usr/include/${PN}/${SLOT}
	doins "${WORKDIR}"/${P}/release/plugins/include/*.h
#	rm -r "${WORKDIR}"/${P}/release/plugins || die

	# install desktop file
	insinto /usr/share/pixmaps
	cp release/freedesktop/icons/scalable/apps/blender.svg \
		release/freedesktop/icons/scalable/apps/blender-${SLOT}.svg
	doins release/freedesktop/icons/scalable/apps/blender-${SLOT}.svg
	insinto /usr/share/applications
	cp release/freedesktop/blender.desktop \
		release/freedesktop/blender-${SLOT}.desktop
	doins release/freedesktop/blender-${SLOT}.desktop

	# install docs
#	use doc && dodoc release/text/BlenderQuickStart.pdf
	if use apidoc; then

		einfo "Generating (BGE) Blender Game Engine API docs ..."
		docinto "API/BGE_API"
		dohtml -r "${WORKDIR}"/${P}/doc/*

#		einfo "Generating (BPY) Blender Python API docs ..."
#		epydoc source/blender/python/doc/*.py -v \
#			-o doc/BPY_API \
#			--quiet --quiet --quiet \
#			--simple-term \
#			--inheritance=included \
#			--graph=all \
#			--dotpath /usr/bin/dot \
#			|| die "epydoc failed."
#		docinto "API/python"
#		dohtml -r doc/BPY_API/*

		einfo "Generating Blender C/C++ API docs ..."
		pushd "${WORKDIR}"/${P}/doc/doxygen > /dev/null
			doxygen -u Doxyfile
			doxygen || die "doxygen failed to build API docs."
			docinto "API/blender"
			dohtml -r html/*
		popd > /dev/null
	fi

	# final cleanup
	rm -r "${WORKDIR}"/install/{Python-license.txt,icons,GPL-license.txt,copyright.txt}

	# installing blender
	insinto /usr/share/${PN}/${SLOT}
	doins -r "${WORKDIR}"/install/2.59/* || die

	# FIX: making all python scripts readable only by group 'users',
   #	  so nobody can modify scripts apart root user, but python
   #	  cache (*.pyc) can be written and shared across the users.
	chown root:users -R "${D}/usr/share/${PN}/${SLOT}/scripts" || die
	chmod 755 -R "${D}/usr/share/${PN}/${SLOT}/scripts" || die
}

pkg_preinst() {
	if [ -h "${ROOT}/usr/$(get_libdir)/blender/plugins/include" ];
	then
		rm -r "${ROOT}"/usr/$(get_libdir)/blender/plugins/include
	fi
}

pkg_postinst() {
	echo
	elog "Blender uses python integration. As such, may have some"
	elog "inherit risks with running unknown python scripting."
	elog
	elog "It is recommended to change your blender temp directory"
	elog "from /tmp to /home/user/tmp or another tmp file under your"
	elog "home directory. This can be done by starting blender, then"
	elog "dragging the main menu down do display all paths."
	elog
	elog "Blender has its own internal rendering engine but you"
	elog "can export to external renderers for image computation"
	elog "like: YafRay[1], sunflow[2], PovRay[3] and luxrender[4]"
	elog
	elog "If you need one of them just emerge it:"
	elog "  [1] emerge -av media-gfx/yafray"
	elog "  [2] emerge -av media-gfx/sunflow"
	elog "  [3] emerge -av media-gfx/povray"
	elog "  [4] emerge -av media-gfx/luxrender"
	elog
	elog "When setting the Blender paths with the User Preferences"
	elog "dialog box, remember to NOT declare your home's paths as:"
	elog "~/.blender, but as: /home/user/.blender; in other words,"
	elog "DO NOT USE the tilde inside the paths, as Blender is not"
	elog "able to handle it, ignoring your customizations."
}