# Copyright 1999-2018 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=6

EGO_PN="github.com/kumina/${PN}"
# Snapshot taken on 2018.11.22
EGO_VENDOR=(
	"github.com/beorn7/perks 3a771d9929"
	"github.com/gogo/protobuf v1.1.1"
	"github.com/golang/protobuf v1.2.0"
	"github.com/matttproud/golang_protobuf_extensions v1.0.1"
	"github.com/prometheus/client_golang v0.9.1"
	"github.com/prometheus/client_model 5c3871d899"
	"github.com/prometheus/common aeab699e26"
	"github.com/prometheus/procfs 185b428841"
	"github.com/alecthomas/template a0175ee3bc"
	"github.com/alecthomas/units 2efee857e7"
	"gopkg.in/alecthomas/kingpin.v2 v2.2.6 github.com/alecthomas/kingpin"
)

inherit golang-vcs-snapshot systemd user

DESCRIPTION="A Prometheus metrics exporter for the Dovecot mail server"
HOMEPAGE="https://github.com/kumina/dovecot_exporter"
SRC_URI="https://${EGO_PN}/archive/${PV}.tar.gz -> ${P}.tar.gz
	${EGO_VENDOR_URI}"
RESTRICT="mirror"

LICENSE="Apache-2.0"
SLOT="0"
KEYWORDS="~amd64"
IUSE="pie"

DOCS=( CHANGELOG.md README.md )
QA_PRESTRIPPED="usr/bin/dovecot_exporter"

G="${WORKDIR}/${P}"
S="${G}/src/${EGO_PN}"

pkg_setup() {
	enewgroup dovecot_exporter
	enewuser dovecot_exporter -1 -1 -1 dovecot_exporter
}

src_compile() {
	export GOPATH="${G}"
	local mygoargs=(
		-v -work -x
		"-buildmode=$(usex pie pie default)"
		"-asmflags=all=-trimpath=${S}"
		"-gcflags=all=-trimpath=${S}"
		-ldflags "-s -w"
	)
	go build "${mygoargs[@]}" || die
}

src_install() {
	dobin dovecot_exporter
	einstalldocs

	newinitd "${FILESDIR}/${PN}.initd" "${PN}"
	newconfd "${FILESDIR}/${PN}.confd" "${PN}"
	systemd_dounit "${FILESDIR}/${PN}.service"

	diropts -o dovecot_exporter -g dovecot_exporter -m 0750
	keepdir /var/log/dovecot_exporter
}