# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

MAJOR="$(ver_cut 1)"
CADABRA="${PN}${MAJOR}"
BUNDLED_MICROTEX_SUBMODULE_SHA="9dd1fb04884cbb1701806c6ad6f5405b4f01d934"

PYTHON_COMPAT=( python3_{12..13} )

inherit xdg-utils python-single-r1 cmake

DESCRIPTION="Field-theory motivated approach to computer algebra"
HOMEPAGE="https://cadabra.science/
	https://github.com/kpeeters/cadabra2/"

if [[ "${PV}" == *9999* ]] ; then
	inherit git-r3

	EGIT_REPO_URI="https://github.com/kpeeters/${CADABRA}"
else
	SRC_URI="
	https://github.com/kpeeters/${CADABRA}/archive/${PV/_p/-p}.tar.gz
		-> ${P}.gh.tar.gz
	https://github.com/kpeeters/MicroTeX/archive/${BUNDLED_MICROTEX_SUBMODULE_SHA}.tar.gz
		-> microtex-${BUNDLED_MICROTEX_SUBMODULE_SHA}.gh.tar.gz
	"
	S="${WORKDIR}/${CADABRA}-${PV/_p/-p}"

	KEYWORDS="~amd64 ~x86"
fi

LICENSE="GPL-3"
SLOT="0/${MAJOR}"
IUSE="gui +jupyter test"
REQUIRED_USE="${PYTHON_REQUIRED_USE}"
RESTRICT="!test? ( test )"

RDEPEND="
	${PYTHON_DEPS}
	app-text/dvipng
	dev-cpp/glibmm:2
	dev-db/sqlite:3=
	dev-libs/boost:=
	dev-libs/gmp:=[cxx]
	dev-libs/jsoncpp:=
	dev-libs/libsigc++:2
	dev-texlive/texlive-basic
	$(python_gen_cond_dep '
		dev-python/gmpy2:2[${PYTHON_USEDEP}]
		dev-python/matplotlib[${PYTHON_USEDEP}]
		dev-python/sympy[${PYTHON_USEDEP}]
		jupyter? (
			dev-python/jupyter[${PYTHON_USEDEP}]
		)
	')
	gui? (
		dev-cpp/gtkmm:3.0
	)
"
DEPEND="
	${RDEPEND}
"
BDEPEND="
	$(python_gen_cond_dep '
		dev-python/pybind11[${PYTHON_USEDEP}]
	')
"

PATCHES=(
	"${FILESDIR}/${CADABRA}-2.5.14-CMakeLists-txt.patch"
	"${FILESDIR}/${CADABRA}-2.5.14-c++lib-CMakeLists-txt.patch"
	"${FILESDIR}/${CADABRA}-2.5.14-frontend-gtkmm-CMakeLists-txt.patch"
	"${FILESDIR}/${CADABRA}-2.5.14-tests-CMakeLists-txt.patch"
)

DOCS=( CODE_OF_CONDUCT.md CONTRIBUTING.md JUPYTER.rst README.rst )

src_prepare() {
	# Bundled submodules
	mkdir -p ./submodules/microtex/ || die
	cp -r -l "${WORKDIR}/MicroTeX-${BUNDLED_MICROTEX_SUBMODULE_SHA}"/* \
	   ./submodules/microtex/ || die

	# Fix "PYTHON_EXECUTABLE" in Jupyter kernel
	sed -i "s|@PYTHON_EXECUTABLE@|${EPYTHON}|"  \
		./jupyterkernel/kernelspec/kernel.json.in || die

	# Clean postinst script which calls libtool and icon-cache update
	echo '#!/bin/sh' > ./config/postinst.in || die

	# Update minimum required CMake version.
	find . -type f \
		\( -iname "CMakeLists.txt" -o -iname "*.cmake" \) \
		-exec sed -i {} \
		-e "/cmake_minimum_required/I s|(.*)|(VERSION 3.30...4.0)|g" \
		\; || die

	cmake_src_prepare
}

src_configure() {
	local -a mycmakeargs=(
		-DENABLE_SYSTEM_JSONCPP="ON"
		-DPACKAGING_MODE="ON"

		-DBUILD_AS_CPP_LIBRARY="OFF"
		-DENABLE_JUPYTER="OFF"  # For a special Xeus Jupyter kernel (uses xtl).
		-DENABLE_MATHEMATICA="OFF"
		-DINSTALL_TARGETS_ONLY="OFF"

		-DBUILD_TESTS="$(usex test)"
		-DENABLE_FRONTEND="$(usex gui)"
		-DENABLE_PY_JUPYTER="$(usex jupyter)"
	)
	cmake_src_configure
}

src_install() {
	cmake_src_install
	python_optimize
}

pkg_postinst() {
	if use gui ; then
		xdg_icon_cache_update
		xdg_desktop_database_update
		xdg_mimeinfo_database_update
	fi
}

pkg_postrm() {
	if use gui ; then
		xdg_icon_cache_update
		xdg_desktop_database_update
		xdg_mimeinfo_database_update
	fi
}