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

# QA check: verify correctness of DISTUTILS_USE_SETUPTOOLS
# Maintainer: Python project <python@gentoo.org>

get_expected_distutils_use_setuptools() {
	[[ ${integrity_error_new} ]] && return 1

	local sitedir=${D}$(python_get_sitedir)
	local egg new_expected
	while read -d $'\0' -r egg; do
		if [[ -f ${egg} ]]; then
			# if .egg-info is a file, it's plain distutils
			new_expected=no
		elif grep -q -s -F '[console_scripts]' "${egg}"/entry_points.txt
		then
			# entry_points == we need rdepend
			new_expected=rdepend
		elif grep -q -E -s '^setuptools' "${egg}"/requires.txt
		then
			# explicit rdepend in package metadata
			new_expected=rdepend
		else
			new_expected=bdepend
		fi

		if [[ ${expected} && ${new_expected} != ${expected} ]]; then
			if [[ ${expected}${new_expected} == [br]depend[br]depend ]]
			then
				# packages can have scripts that are installed
				# conditionally to implementation
				expected=rdepend
			else
				integrity_error_new=${new_expected}
				return 1
			fi
		else
			expected=${new_expected}
		fi
	done < <(find "${sitedir}" -name '*.egg-info' -print0)
}

distutils_use_setuptools_check() {
	# applicable only to ebuilds inheriting distutils-r1
	[[ ${_DISTUTILS_R1} ]] || return
	# 'manual' means no checking
	[[ ${DISTUTILS_USE_SETUPTOOLS} == manual ]] && return
	# pyproject.toml is verified by using it
	[[ ${DISTUTILS_USE_SETUPTOOLS} == pyproject.toml ]] && return

	local expected integrity_error_new
	_distutils-r1_run_foreach_impl get_expected_distutils_use_setuptools

	if [[ ${integrity_error_new} ]]; then
		eerror "DISTUTILS_USE_SETUPTOOLS integrity error!"
		eerror "expected was:    ${expected}"
		eerror "new_expected is: ${integrity_error_new}"
		eerror "Please report a bug about this and CC python@"
	elif [[ ${DISTUTILS_USE_SETUPTOOLS} != ${expected} ]]; then
			local def=
			[[ ${DISTUTILS_USE_SETUPTOOLS} == bdepend ]] && def=' (or unset)'

			eqawarn "DISTUTILS_USE_SETUPTOOLS value is probably incorrect"
			eqawarn "  have:     DISTUTILS_USE_SETUPTOOLS=${DISTUTILS_USE_SETUPTOOLS}${def}"
			eqawarn "  expected: DISTUTILS_USE_SETUPTOOLS=${expected}"
	fi
}

distutils_use_setuptools_check

: # guarantee successful exit

# vim:ft=ebuild