# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-db/postgresql/postgresql-9.1.14-r2.ebuild,v 1.1 2014/11/04 01:01:12 titanofold Exp $

EAPI="5"

# Testing within Portage's environment is broken, and the patch no
# longer applies cleanly.
RESTRICT="test"

PYTHON_COMPAT=( python{2_{6,7},3_{2,3,4}} )
WANT_AUTOMAKE="none"

inherit autotools eutils flag-o-matic multilib pam prefix python-single-r1 systemd user versionator

KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~amd64-fbsd ~ppc-macos ~sparc-fbsd ~x86-fbsd ~x86-solaris"

SLOT="$(get_version_component_range 1-2)"

SRC_URI="mirror://postgresql/source/v${PV}/postgresql-${PV}.tar.bz2"

# Add initscript source.
SRC_URI+=" http://dev.gentoo.org/~titanofold/postgresql-initscript-pre92-2.6.tbz2"

LICENSE="POSTGRESQL GPL-2"
DESCRIPTION="PostgreSQL RDBMS"
HOMEPAGE="http://www.postgresql.org/"

LINGUAS="af cs de en es fa fr hr hu it ko nb pl pt_BR ro ru sk sl sv tr zh_CN zh_TW"
IUSE="doc kerberos kernel_linux ldap nls pam perl -pg_legacytimestamp python +readline selinux server ssl static-libs tcl threads uuid xml zlib"

for lingua in ${LINGUAS}; do
	IUSE+=" linguas_${lingua}"
done

wanted_languages() {
	local enable_langs

	for lingua in ${LINGUAS} ; do
		use linguas_${lingua} && enable_langs+="${lingua} "
	done

	echo -n ${enable_langs}
}

CDEPEND="
>=app-admin/eselect-postgresql-1.2.0
sys-apps/less
virtual/libintl
kerberos? ( virtual/krb5 )
ldap? ( net-nds/openldap )
pam? ( virtual/pam )
perl? ( >=dev-lang/perl-5.8 )
python? ( ${PYTHON_DEPS} )
readline? ( sys-libs/readline )
ssl? ( >=dev-libs/openssl-0.9.6-r1 )
tcl? ( >=dev-lang/tcl-8 )
uuid? ( dev-libs/ossp-uuid )
xml? ( dev-libs/libxml2 dev-libs/libxslt )
zlib? ( sys-libs/zlib )
"

DEPEND="${CDEPEND}
!!<sys-apps/sandbox-2.0
sys-devel/bison
sys-devel/flex
nls? ( sys-devel/gettext )
xml? ( virtual/pkgconfig )
"

RDEPEND="${CDEPEND}
!dev-db/postgresql-docs:${SLOT}
!dev-db/postgresql-base:${SLOT}
!dev-db/postgresql-server:${SLOT}
selinux? ( sec-policy/selinux-postgresql )
"

pkg_setup() {
	enewgroup postgres 70
	enewuser postgres 70 /bin/bash /var/lib/postgresql postgres

	use python && python-single-r1_pkg_setup
}

src_prepare() {
	# Eliminate autotools version check
	sed '/m4_PACKAGE_VERSION/,+3d' -i configure.in || die

	# Work around PPC{,64} compilation bug where bool is already defined
	sed '/#ifndef __cplusplus/a #undef bool' -i src/include/c.h || die

	# Set proper run directory
	sed "s|\(PGSOCKET_DIR\s\+\)\"/tmp\"|\1\"${EPREFIX}/run/postgresql\"|" \
		-i src/include/pg_config_manual.h || die

	sed -e "s|@SLOT@|${SLOT}|g" -e "s|@LIBDIR@|$(get_libdir)|g" \
		-i "${WORKDIR}"/postgresql{.{init,confd,service},-check-db-dir} || \
		die "SLOT/LIBDIR sed failed"

	epatch "${FILESDIR}/pg_ctl-exit-status.patch"

	use server || epatch "${FILESDIR}/${PN}-${SLOT}-no-server.patch"

	if use pam ; then
		sed -e "s/\(#define PGSQL_PAM_SERVICE \"postgresql\)/\1-${SLOT}/" \
			-i src/backend/libpq/auth.c || \
			die 'PGSQL_PAM_SERVICE rename failed.'
	fi

	eautoconf
}

src_configure() {
	case ${CHOST} in
		*-darwin*|*-solaris*)
			use nls && append-libs intl
			;;
	esac

	export LDFLAGS_SL="${LDFLAGS}"
	export LDFLAGS_EX="${LDFLAGS}"

	local PO="${EPREFIX%/}"

	econf \
		--prefix="${PO}/usr/$(get_libdir)/postgresql-${SLOT}" \
		--datadir="${PO}/usr/share/postgresql-${SLOT}" \
		--docdir="${PO}/usr/share/doc/postgresql-${SLOT}" \
		--includedir="${PO}/usr/include/postgresql-${SLOT}" \
		--mandir="${PO}/usr/share/postgresql-${SLOT}/man" \
		--sysconfdir="${PO}/etc/postgresql-${SLOT}" \
		--with-system-tzdata="${PO}/usr/share/zoneinfo" \
		$(use_enable !pg_legacytimestamp integer-datetimes) \
		$(use_enable threads thread-safety) \
		$(use_with kerberos gssapi) \
		$(use_with kerberos krb5) \
		$(use_with ldap) \
		$(use_with pam) \
		$(use_with perl) \
		$(use_with python) \
		$(use_with readline) \
		$(use_with ssl openssl) \
		$(use_with tcl) \
		$(use_with uuid ossp-uuid) \
		$(use_with xml libxml) \
		$(use_with xml libxslt) \
		$(use_with zlib) \
		"$(use_enable nls nls "$(wanted_languages)")"
}

src_compile() {
	emake
	emake -C contrib
}

src_install() {
	emake DESTDIR="${D}" install
	emake DESTDIR="${D}" install -C contrib

	dodoc README HISTORY doc/{TODO,bug.template}

	# man pages are already built, but if we have the target make them,
	# they'll be generated from source before being installed so we
	# manually install man pages.
	# We use ${SLOT} instead of doman for postgresql.eselect
	insinto /usr/share/postgresql-${SLOT}/man/
	doins -r doc/src/sgml/man{1,3,7}
	if ! use server; then
		# Remove man pages for non-existent binaries
		for m in {initdb,pg_{controldata,ctl,resetxlog},post{gres,master}}; do
			rm "${ED}/usr/share/postgresql-${SLOT}/man/man1/${m}.1"
		done
	fi
	docompress /usr/share/postgresql-${SLOT}/man/man{1,3,7}

	insinto /etc/postgresql-${SLOT}
	newins src/bin/psql/psqlrc.sample psqlrc

	dodir /etc/eselect/postgresql/slots/${SLOT}
	echo "postgres_ebuilds=\"\${postgres_ebuilds} ${PF}\"" > \
		"${ED}/etc/eselect/postgresql/slots/${SLOT}/base"

	use static-libs || find "${ED}" -name '*.a' -delete

	if use doc ; then
		docinto html
		dodoc doc/src/sgml/html/*

		docinto sgml
		dodoc doc/src/sgml/*.{sgml,dsl}
	fi

	if use server; then
		newconfd "${WORKDIR}/postgresql.confd" postgresql-${SLOT}
		newinitd "${WORKDIR}/postgresql.init" postgresql-${SLOT}

		systemd_newunit "${WORKDIR}"/postgresql.service postgresql-${SLOT}.service
		systemd_newtmpfilesd "${WORKDIR}"/postgresql.tmpfilesd postgresql-${SLOT}.conf
		newbin "${WORKDIR}"/postgresql-check-db-dir postgresql-${SLOT}-check-db-dir

		use pam && pamd_mimic system-auth postgresql-${SLOT} auth account session

		if use prefix ; then
			keepdir /run/postgresql
			fperms 0775 /run/postgresql
		fi
	fi
}

pkg_postinst() {
	postgresql-config update

	elog "If you need a global psqlrc-file, you can place it in:"
	elog "    ${EROOT%/}/etc/postgresql-${SLOT}/"

	if use server ; then
		elog
		elog "Gentoo specific documentation:"
		elog "https://wiki.gentoo.org/wiki/PostgreSQL"
		elog
		elog "Official documentation:"
		elog "http://www.postgresql.org/docs/${SLOT}/static/index.html"
		elog
		elog "The default location of the Unix-domain socket is:"
		elog "    ${EROOT%/}/run/postgresql/"
		elog
		elog "Before initializing the database, you may want to edit PG_INITDB_OPTS"
		elog "so that it contains your preferred locale in:"
		elog "    ${EROOT%/}/etc/conf.d/postgresql-${SLOT}"
		elog
		elog "Then, execute the following command to setup the initial database"
		elog "environment:"
		elog "    emerge --config =${CATEGORY}/${PF}"
	fi
}

pkg_prerm() {
	if use server && [[ -z ${REPLACED_BY_VERSION} ]] ; then
		ewarn "Have you dumped and/or migrated the ${SLOT} database cluster?"
		ewarn "\thttps://wiki.gentoo.org/wiki/PostgreSQL#doc_chap5"

		ebegin "Resuming removal in 10 seconds (Control-C to cancel)"
		sleep 10
		eend 0
	fi
}

pkg_postrm() {
	postgresql-config update
}

pkg_config() {
	use server || die "USE flag 'server' not enabled. Nothing to configure."

	[[ -f "${EROOT%/}/etc/conf.d/postgresql-${SLOT}" ]] && source "${EROOT%/}/etc/conf.d/postgresql-${SLOT}"
	[[ -z "${PGDATA}" ]] && PGDATA="${EROOT%/}/etc/postgresql-${SLOT}/"
	[[ -z "${DATA_DIR}" ]] && DATA_DIR="${EROOT%/}/var/lib/postgresql/${SLOT}/data"

	# environment.bz2 may not contain the same locale as the current system
	# locale. Unset and source from the current system locale.
	if [ -f "${EROOT%/}/etc/env.d/02locale" ]; then
		unset LANG
		unset LC_CTYPE
		unset LC_NUMERIC
		unset LC_TIME
		unset LC_COLLATE
		unset LC_MONETARY
		unset LC_MESSAGES
		unset LC_ALL
		source "${EROOT%/}/etc/env.d/02locale"
		[ -n "${LANG}" ] && export LANG
		[ -n "${LC_CTYPE}" ] && export LC_CTYPE
		[ -n "${LC_NUMERIC}" ] && export LC_NUMERIC
		[ -n "${LC_TIME}" ] && export LC_TIME
		[ -n "${LC_COLLATE}" ] && export LC_COLLATE
		[ -n "${LC_MONETARY}" ] && export LC_MONETARY
		[ -n "${LC_MESSAGES}" ] && export LC_MESSAGES
		[ -n "${LC_ALL}" ] && export LC_ALL
	fi

	einfo "You can modify the paths and options passed to initdb by editing:"
	einfo "    ${EROOT%/}/etc/conf.d/postgresql-${SLOT}"
	einfo
	einfo "Information on options that can be passed to initdb are found at:"
	einfo "    http://www.postgresql.org/docs/${SLOT}/static/creating-cluster.html"
	einfo "    http://www.postgresql.org/docs/${SLOT}/static/app-initdb.html"
	einfo
	einfo "PG_INITDB_OPTS is currently set to:"
	if [[ -z "${PG_INITDB_OPTS}" ]] ; then
		einfo "    (none)"
	else
		einfo "    ${PG_INITDB_OPTS}"
	fi
	einfo
	einfo "Configuration files will be installed to:"
	einfo "    ${PGDATA}"
	einfo
	einfo "The database cluster will be created in:"
	einfo "    ${DATA_DIR}"
	einfo
	while [ "$correct" != "true" ] ; do
		einfo "Are you ready to continue? (y/n)"
		read answer
		if [[ $answer =~ ^[Yy]([Ee][Ss])?$ ]] ; then
			correct="true"
		elif [[ $answer =~ ^[Nn]([Oo])?$ ]] ; then
			die "Aborting initialization."
		else
			echo "Answer not recognized"
		fi
	done

	if [ -n "$(ls -A ${DATA_DIR} 2> /dev/null)" ] ; then
		eerror "The given directory, '${DATA_DIR}', is not empty."
		eerror "Modify DATA_DIR to point to an empty directory."
		die "${DATA_DIR} is not empty."
	fi

	[ -z "${PG_MAX_CONNECTIONS}" ] && PG_MAX_CONNECTIONS="128"
	einfo "Checking system parameters..."

	if ! use kernel_linux ; then
		einfo "Skipped."
		einfo "  Tests not supported on this OS (yet)"
	else
		if [ -z ${SKIP_SYSTEM_TESTS} ] ; then
			einfo "Checking whether your system supports at least ${PG_MAX_CONNECTIONS} connections..."

			local SEMMSL=$(sysctl -n kernel.sem | cut -f1)
			local SEMMNS=$(sysctl -n kernel.sem | cut -f2)
			local SEMMNI=$(sysctl -n kernel.sem | cut -f4)
			local SHMMAX=$(sysctl -n kernel.shmmax)

			local SEMMSL_MIN=17
			local SEMMNS_MIN=$(( ( ${PG_MAX_CONNECTIONS}/16 ) * 17 ))
			local SEMMNI_MIN=$(( ( ${PG_MAX_CONNECTIONS}+15 ) / 16 ))
			local SHMMAX_MIN=$(( 500000 + ( 30600 * ${PG_MAX_CONNECTIONS} ) ))

			for p in SEMMSL SEMMNS SEMMNI SHMMAX ; do
				if [ $(eval echo \$$p) -lt $(eval echo \$${p}_MIN) ] ; then
					eerror "The value for ${p} $(eval echo \$$p) is below the recommended value $(eval echo \$${p}_MIN)"
					eerror "You have now several options:"
					eerror "    - Change the mentioned system parameter"
					eerror "    - Lower the number of max.connections by setting PG_MAX_CONNECTIONS to a"
					eerror "      value lower than ${PG_MAX_CONNECTIONS}"
					eerror "    - Set SKIP_SYSTEM_TESTS in case you want to ignore this test completely"
					eerror "More information can be found here:"
					eerror "    http://www.postgresql.org/docs/${SLOT}/static/kernel-resources.html"
					die "System test failed."
				fi
			done
			einfo "Passed."
		else
			ewarn "SKIP_SYSTEM_TESTS set, so skipping."
		fi
	fi

	einfo "Creating the data directory ..."
	if [[ ${EUID} == 0 ]] ; then
		mkdir -p "${DATA_DIR}"
		chown -Rf postgres:postgres "${DATA_DIR}"
		chmod 0700 "${DATA_DIR}"
	fi

	einfo "Initializing the database ..."

	if [[ ${EUID} == 0 ]] ; then
		su postgres -c "${EROOT%/}/usr/$(get_libdir)/postgresql-${SLOT}/bin/initdb -D \"${DATA_DIR}\" ${PG_INITDB_OPTS}"
	else
		"${EROOT%/}"/usr/$(get_libdir)/postgresql-${SLOT}/bin/initdb -U postgres -D "${DATA_DIR}" ${PG_INITDB_OPTS}
	fi

	mv "${DATA_DIR%/}"/*.conf "${PGDATA}"

	einfo "The autovacuum function, which was in contrib, has been moved to the main"
	einfo "PostgreSQL functions starting with 8.1, and starting with 8.4 is now enabled"
	einfo "by default. You can disable it in the cluster's:"
	einfo "    ${PGDATA%/}/postgresql.conf"
	einfo
	einfo "The PostgreSQL server, by default, will log events to:"
	einfo "    ${DATA_DIR%/}/postmaster.log"
	einfo
	if use prefix ; then
		einfo "The location of the configuration files have moved to:"
		einfo "    ${PGDATA}"
		einfo "To start the server:"
		einfo "    pg_ctl start -D ${DATA_DIR} -o '-D ${PGDATA} --data-directory=${DATA_DIR}'"
		einfo "To stop:"
		einfo "    pg_ctl stop -D ${DATA_DIR}"
		einfo
		einfo "Or move the configuration files back:"
		einfo "mv ${PGDATA}*.conf ${DATA_DIR}"
	else
		einfo "You should use the '${EROOT%/}/etc/init.d/postgresql-${SLOT}' script to run PostgreSQL"
		einfo "instead of 'pg_ctl'."
	fi
}