# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI="2"

inherit eutils toolchain-funcs

DESCRIPTION="Console-based network traffic monitor that keeps statistics of network usage"
HOMEPAGE="http://humdi.net/vnstat/"
SRC_URI="http://humdi.net/vnstat/${P}.tar.gz"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~ppc ~ppc64 ~sparc ~x86"
IUSE="gd"

DEPEND="
	gd? ( media-libs/gd[png] )"
RDEPEND="${DEPEND}
	virtual/cron"

pkg_setup() {
	enewgroup vnstat
	enewuser vnstat -1 -1 /dev/null vnstat
}

src_compile() {
	sed -i 's/vnstat\.log/vnstatd\.log/' cfg/vnstat.conf
	sed -i 's/vnstat\.pid/vnstatd\/vnstatd\.pid/' cfg/vnstat.conf

	if use gd; then
		emake all CC="$(tc-getCC)" CFLAGS="${CFLAGS}" || die "emake all failed"
	else
		emake CC="$(tc-getCC)" CFLAGS="${CFLAGS}" || die "emake failed"
	fi
}

src_install() {
	if use gd; then
		dobin src/vnstati || die "vnstati dobin failed"
	fi
	dobin src/vnstat src/vnstatd || die "dobin failed"

	insinto /etc
	doins cfg/vnstat.conf
	fowners root:vnstat /etc/vnstat.conf

	insinto /etc/cron.d
	newins "${FILESDIR}"/vnstat.crontab vnstat

	newconfd "${FILESDIR}"/vnstatd.confd vnstatd
	newinitd "${FILESDIR}"/vnstatd.initd vnstatd

	keepdir /var/lib/vnstat
	fowners vnstat:vnstat /var/lib/vnstat

	keepdir /var/run/vnstatd
	fowners vnstat:vnstat /var/run/vnstatd

	use gd && doman man/vnstati.1
	doman man/vnstat.1 man/vnstatd.1

	newdoc examples/vnstat_ip-up ip-up.example
	newdoc examples/vnstat_ip-down ip-down.example
	dodoc CHANGES README UPGRADE FAQ examples/vnstat.cgi
	newdoc INSTALL README.setup
}

pkg_postinst() {
	# compat for 1.1 ebuild
	if [[ -d "${ROOT}"/var/spool/vnstat ]]; then
		mv -f "${ROOT}"/var/spool/vnstat/* "${ROOT}"/var/lib/vnstat/ \
			&& rmdir "${ROOT}"/var/spool/vnstat
		ewarn
		ewarn "vnStat db files have been moved from /var/spool/vnstat to /var/lib/vnstat"
	fi

	# compat for <1.7-r2 ebuilds
	[[ -d "${ROOT}"/var/lib/vnstat ]] && chown vnstat:vnstat "${ROOT}"/var/lib/vnstat
	if [[ `ls -oAI.keep_"${CATEGORY}"* "${ROOT}"/var/lib/vnstat/ \
		| egrep -v "^total|.* vnstat .*" | wc -l` -gt 0 ]]
	then
		find "${ROOT}"/var/lib/vnstat/ -type f -a ! -name .keep_"${CATEGORY}"\* \
			-exec chown vnstat:vnstat {} +
		ewarn
		ewarn "vnStat db files owning user and group has been changed to \"vnstat\"."
	fi

	elog
	elog "Repeat the following commands for every interface that"
	elog "is to be monitored (replace eth0):"
	elog "   vnstat -u -i eth0"
	elog "   chown vnstat:vnstat /var/lib/vnstat/eth0"
	elog
	elog "An init script for vnstatd has been installed to /etc/init.d/vnstatd."
	elog

	if [[ -e "${ROOT}"/etc/cron.hourly/vnstat ]]; then
		elog "vnstat's cron script is now installed as /etc/cron.d/vnstat."
		elog "Please remove /etc/cron.hourly/vnstat."
		elog
	else
		elog "A cron script has been installed to /etc/cron.d/vnstat."
		elog
	fi
	elog "To update the interface database automatically using"
	elog "cron, uncomment the lines in /etc/cron.d/vnstat."
	elog
	ewarn "NOTE: If an interface transfers more than ~4GB in"
	ewarn "the time between cron runs, vnstat may miss traffic."
	elog

	elog "Starting with version 1.5, the --dbdir option is dropped."
	elog "One can set the database directory using the \"DatabaseDir\""
	elog "directive in the configuration file (/etc/vnstat.conf)."
	elog
}