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

# @ECLASS: gnuradio.eclass
# @MAINTAINER:
# hololeap <hololeap@gmail.com>
# @BLURB: Eclass for GNURadio packages/addons
# @DESCRIPTION:
# Abstracts away a few common motifs when writing ebuilds
# for GNURadio packages/addons.

case "${EAPI:-0}" in
	5|6|7)
		;;
	*)
		die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}"
		;;
esac

PYTHON_COMPAT=( python3_{6,7,8} )

inherit cmake-utils python-single-r1

EXPORT_FUNCTIONS src_configure

LICENSE="GPL-3"
SLOT="0/${PV}"

REQUIRED_USE="${PYTHON_REQUIRED_USE}"

# @ECLASS-VARIABLE: GNURADIO_USE_DEPS
# @DEFAULT_UNSET
# @DESCRIPTION:
# An array of USE flags dependencies that need to be enabled for 
# net-wireless/gnuradio. WARNING: If you want this variable to work, 
# you MUST define it before inheriting this eclass.

# @ECLASS-VARIABLE: GNURADIO_DOC_SUPPORTED
# @DEFAULT_UNSET
# @DESCRIPTION:
# If this is set to "f", the "doc" USE flag will be removed and
# the relevant parts of src_configure() will be skipped.
# WARNING: If you want this variable to work, you MUST define it 
# before inheriting this eclass.

[[ "$GNURADIO_DOC_SUPPORTED" != f ]] && IUSE="doc"

# @FUNCTION: _gnuradio_join_use_deps
# @USAGE: _gnuradio_join_use_deps
# @RETURN: A comma-seperated USE dependency value
# @INTERNAL
# @DESCRIPTION:
# Join any custom USE dependencies (set using $GNURADIO_USE_DEPS) and
# $PYTHON_SINGLE_USEDEP.

_gnuradio_join_use_deps() {
	local use_deps

	if [[ -z $GNURADIO_USE_DEPS ]]; then
		use_deps="$PYTHON_SINGLE_USEDEP"
	else
		use_deps=${GNURADIO_USE_DEPS[@]}
		use_deps+=( "${PYTHON_SINGLE_USEDEP}" )
	fi

	# Join the elements of the array with commas
	use_deps="$(printf ",%s" "${use_deps[@]}")"
	echo -n "${use_deps:1}"
}

RDEPEND=">=net-wireless/gnuradio-3.7_rc:0=[$(_gnuradio_join_use_deps)]
	dev-libs/boost:=[${PYTHON_SINGLE_USEDEP}]
	${PYTHON_DEPS}"

DEPEND="${RDEPEND}
	dev-util/cppunit:=
	dev-lang/swig:0"

if [[ "$GNURADIO_DOC_SUPPORTED" != f ]]; then 
	DEPEND="${DEPEND}
		doc? ( app-doc/doxygen:= )"
fi

gnuradio_src_configure() {
	debug-print-function ${FUNCNAME} "$@"

	if [[ -z $mycmakeargs ]]; then
		local mycmakeargs=( -DPYTHON_EXECUTABLE="${PYTHON}" )
	else
		mycmakeargs+=( -DPYTHON_EXECUTABLE="${PYTHON}" )
	fi

	if [[ "$GNURADIO_DOC_SUPPORTED" != f ]]; then
		mycmakeargs+=(
			-DENABLE_DOXYGEN="$(usex doc)"
			
			# This may not be needed at all
			# -DWITH_ENABLE_DOXYGEN="$(usex doc)"
		)
	fi

	cmake-utils_src_configure
}