# Copyright 1999-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

# @ECLASS: konsolebox-scripts.eclass
# @MAINTAINER:
# konsolebox@gmail.com
# @AUTHOR:
# konsolebox <konsolebox@gmail.com>
# @SUPPORTED_EAPIS: 5 6 7 8
# @BLURB: Eclass for installing konsolebox's scripts
# @DESCRIPTION:
# This eclass contains unified code for installing konsolebox's scripts

# @ECLASS_VARIABLE: KONSOLEBOX_SCRIPTS_GIT_BRANCH
# @DESCRIPTION:
# Git branch to checkout when PV == 9999*.  Default is 'testing' if
# PV == 99999, or 'master' otherwise.

# @ECLASS_VARIABLE: KONSOLEBOX_SCRIPTS_COMMIT
# @DEFAULT_UNSET
# @DESCRIPTION:
# Commit version that contain the script when PV != 9999

# @ECLASS_VARIABLE: KONSOLEBOX_SCRIPTS_EXT
# @DESCRIPTION:
# Extension name of the script
# @REQUIRED

# @ECLASS_VARIABLE: KONSOLEBOX_SCRIPTS_RUBY_SINGLE_TARGETS
# @DESCRIPTION:
# Ruby targets a Ruby script can be installed for

# @ECLASS_VARIABLE: KONSOLEBOX_SCRIPTS_RUBY_DEPENDENCIES
# @DESCRIPTION:
# Dependencies of a Ruby script

[[ ${EAPI} == [5678] ]] || die "EAPI needs to be 5, 6, 7 or 8."
[[ ${PV} == 9999* ]] && inherit git-r3
[[ ${KONSOLEBOX_SCRIPTS_EXT} == rb ]] && inherit ruby-utils-compat
inherit call

# @FUNCTION: _konsolebox-scripts_set_globals
# @DESCRIPTION:
# Sets up global variables
# @INTERNAL
_konsolebox-scripts_set_globals() {
	if [[ ${PV} == 9999* ]]; then
		EGIT_REPO_URI="https://github.com/konsolebox/scripts.git"
		EGIT_BRANCH=${KONSOLEBOX_SCRIPTS_GIT_BRANCH-}
		[[ -z ${EGIT_BRANCH} && ${PV} == 99999 ]] && EGIT_BRANCH=testing
		[[ -z ${EGIT_BRANCH} ]] && EGIT_BRANCH=master
	else
		[[ -z ${KONSOLEBOX_SCRIPTS_COMMIT-} ]] && die "Commit version not specified."
		SRC_URI="https://raw.githubusercontent.com/konsolebox/scripts/${KONSOLEBOX_SCRIPTS_COMMIT}/${PN}.${KONSOLEBOX_SCRIPTS_EXT} -> ${PN}-${PV}-${KONSOLEBOX_SCRIPTS_COMMIT:0:8}.${KONSOLEBOX_SCRIPTS_EXT}"
		S=${WORKDIR}
	fi

	HOMEPAGE="https://github.com/konsolebox/scripts"
	SLOT=${SLOT-0}

	if [[ ${KONSOLEBOX_SCRIPTS_EXT} == rb ]]; then
		local deps impl_dep target valid_flags=

		for target in "${KONSOLEBOX_SCRIPTS_RUBY_SINGLE_TARGETS[@]}"; do
			if [[ " ${RUBY_TARGETS_PREFERENCE} " == *" ${target} "* ]]; then
				impl_dep=$(_ruby_implementation_depend "${target}") && [[ ${impl_dep} ]] || die
				valid_flags+=" ruby_single_target_${target}"

				if [[ ${#KONSOLEBOX_SCRIPTS_RUBY_DEPENDENCIES[@]} -gt 0 ]]; then
					printf -v deps 'dev-ruby/%s[FLAG] ' "${KONSOLEBOX_SCRIPTS_RUBY_DEPENDENCIES[@]}"
					deps=${deps//FLAG/ruby_targets_${target}}
					RDEPEND+=" ruby_single_target_${target}? ( ${impl_dep}${deps:+ }${deps% } )"
				fi
			fi
		done

		[[ -z ${valid_flags} ]] && die "No supported Ruby implementation."
		IUSE="${IUSE+ }${valid_flags# }"
		REQUIRED_USE="^^ ( ${valid_flags} )"
	fi

	if [[ ${KONSOLEBOX_SCRIPTS_EXT} != bash ]] && has nounset ${IUSE//+}; then
		die "Nounset use flag is only valid in bash scripts."
	fi
}

# @FUNCTION: konsolebox-scripts_src_unpack()
# @DESCRIPTION:
# Implements src_unpack
konsolebox-scripts_src_unpack() {
	if [[ ${PV} == 9999* ]]; then
		git-r3_src_unpack
	else
		call cp -- "${DISTDIR}/${A}" "${WORKDIR}/${PN}.${KONSOLEBOX_SCRIPTS_EXT}" || die
	fi
}

# @FUNCTION: konsolebox-scripts_src_compile()
# @DESCRIPTION:
# Implements src_compile
konsolebox-scripts_src_compile() {
	call cp -- "${PN}.${KONSOLEBOX_SCRIPTS_EXT}" "${PN}" || die

	if [[ ${KONSOLEBOX_SCRIPTS_EXT} == rb ]]; then
		local ruby=${EPREFIX}/usr/bin/ruby use

		for use in ${IUSE}; do
			if [[ ${use} == ruby_single_target_* ]] && use "${use}"; then
				ruby=${EPREFIX}/usr/bin/${use#ruby_single_target_}
				break
			fi
		done

		call sed -i -e "1s|.*|#!${ruby}|" "${PN}" || die
	fi

	if has nounset ${IUSE//+} && use nounset; then
		call sed -i -e '1s|.*|&\n\n\[\[ BASH_VERSINFO -ge 5 \]\] \&\& set -u|' "${PN}" || die
	fi
}

# @FUNCTION: konsolebox-scripts_src_install()
# @DESCRIPTION:
# Implements src_install
konsolebox-scripts_src_install() {
	dobin "${PN}"
}

_konsolebox-scripts_set_globals
EXPORT_FUNCTIONS src_unpack src_compile src_install