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

EAPI="7"

inherit eutils pax-utils multilib-minimal

DESCRIPTION="Oracle 18c Instant Client with SDK"
HOMEPAGE="https://www.oracle.com/technetwork/database/database-technologies/instant-client/overview/index.html"

MY_SOVER=18.1 # the library soname found in the zip files

IUSE="jdbc odbc precomp +sdk +sqlplus tools"
REQUIRED_USE="precomp? ( sdk )"

MY_PVM=$(ver_cut 1-2)
MY_P="instantclient_$(ver_rs 1 _ ${MY_PVM})"

MY_PV=$(ver_cut 1-4)
MY_PVP=$(ver_cut 5) # p2

MY_PLAT_x86="Linux x86"
MY_BITS_x86=32
MY_A_x86="${PN/oracle-/}-basic-linux-${MY_PV}.0dbru.zip"
MY_A_x86_jdbc="${MY_A_x86/basic/jdbc}"
MY_A_x86_odbc="${MY_A_x86/basic/odbc}"
MY_A_x86_precomp="${MY_A_x86/basic/precomp}"
MY_A_x86_sdk="${MY_A_x86/basic/sdk}"
MY_A_x86_sqlplus="${MY_A_x86/basic/sqlplus}"
MY_A_x86_tools="${MY_A_x86/basic/tools}"

MY_PLAT_amd64="Linux x86-64"
MY_BITS_amd64=64
MY_A_amd64="${PN/oracle-}-basic-linux.x64-${MY_PV}.0dbru.zip"
MY_A_amd64_jdbc="${MY_A_amd64/basic/jdbc}"
MY_A_amd64_odbc="${MY_A_amd64/basic/odbc}"
MY_A_amd64_precomp="${MY_A_amd64/basic/precomp}"
MY_A_amd64_sdk="${MY_A_amd64/basic/sdk}"
MY_A_amd64_sqlplus="${MY_A_amd64/basic/sqlplus}"
MY_A_amd64_tools="${MY_A_amd64/basic/tools}"

if [[ ${MY_PVP} == p* ]]
then
	MY_PVP=-${MY_PVP#p}
	# Updated 9/22/2017: instantclient-odbc-linux-12.2.0.1.0-2.zip
	MY_A_x86_odbc="${MY_A_x86_odbc%.zip}${MY_PVP}.zip"
	MY_A_amd64_odbc="${MY_A_amd64_odbc%.zip}${MY_PVP}.zip"
fi

SRC_URI="
	abi_x86_32? (
		${MY_A_x86}
		jdbc?    ( ${MY_A_x86_jdbc}    )
		odbc?    ( ${MY_A_x86_odbc}    )
		precomp? ( ${MY_A_x86_precomp} )
		!abi_x86_64? (
			sdk?     ( ${MY_A_x86_sdk}     )
			sqlplus? ( ${MY_A_x86_sqlplus} )
			tools?   ( ${MY_A_x86_tools}   )
	) )
	abi_x86_64? (
		${MY_A_amd64}
		jdbc?    ( ${MY_A_amd64_jdbc}    )
		odbc?    ( ${MY_A_amd64_odbc}    )
		precomp? ( ${MY_A_amd64_precomp} )
		sdk?     ( ${MY_A_amd64_sdk}     )
		sqlplus? ( ${MY_A_amd64_sqlplus} )
		tools?   ( ${MY_A_amd64_tools}   )
	)
"

LICENSE="OTN"
SLOT="0/${MY_SOVER}"
KEYWORDS="~amd64 ~x86"
RESTRICT="fetch splitdebug"

DEPEND="app-arch/unzip"
RDEPEND="
	>=dev-libs/libaio-0.3.109-r5[${MULTILIB_USEDEP}]
	!<dev-db/oracle-instantclient-basic-12
	!<dev-db/oracle-instantclient-odbc-12
	!<dev-db/oracle-instantclient-jdbc-12
	!<dev-db/oracle-instantclient-sqlplus-12
"

S="${WORKDIR}/${MY_P}"

QA_PREBUILT="usr/lib*/oracle/client/*/*"

set_my_abivars() {
	if multilib_is_native_abi; then
		MY_WORKDIR="${WORKDIR}"
		MY_S="${S}"
	else
		MY_WORKDIR="${WORKDIR}/${ABI}"
		MY_S="${MY_WORKDIR}/${MY_P}"
	fi

	local abi=${ABI}
	[[ ${abi} == 'default' ]] && abi=${ARCH}
	MY_PLAT=MY_PLAT_${abi}          ; MY_PLAT=${!MY_PLAT}         # platform name
	MY_BITS=MY_BITS_${abi}          ; MY_BITS=${!MY_BITS}         # platform bitwidth
	MY_A=MY_A_${abi}                ; MY_A=${!MY_A}               # runtime distfile
	MY_A_jdbc=MY_A_${abi}_jdbc      ; MY_A_jdbc=${!MY_A_jdbc}       # jdbc distfile
	MY_A_odbc=MY_A_${abi}_odbc      ; MY_A_odbc=${!MY_A_odbc}       # odbc distfile
	MY_A_precomp=MY_A_${abi}_precomp; MY_A_precomp=${!MY_A_precomp} # precomp distfile
	MY_A_sdk=MY_A_${abi}_sdk        ; MY_A_sdk=${!MY_A_sdk}         # sdk distfile
	MY_A_sqlplus=MY_A_${abi}_sqlplus; MY_A_sqlplus=${!MY_A_sqlplus} # sqlplus distfile
	MY_A_tools=MY_A_${abi}_tools    ; MY_A_tools=${!MY_A_tools}     # tools distfile

	[[ -n ${MY_PLAT} ]]
}

oic_distfile_status() {
	: # We must not access DISTDIR in pkg_* phase, bug#612966.
# Not removing this lines yet, we may eventually specify this feature.
#	if [[ -r ${DISTDIR}/${1} ]]; then
#		echo "already here"
#	else
#		echo "still absent"
#	fi
}

pkg_nofetch() {
	eerror "Please go to"
	eerror "  ${HOMEPAGE//overview/downloads}"
	eerror "  and download"
	local ABI
	for ABI in $(multilib_get_enabled_abis)
	do
		set_my_abivars || continue
		eerror "Instant Client for ${MY_PLAT}"
		# convenient ordering like Linux x86-64 download site
		eerror "            Basic: $(oic_distfile_status ${MY_A}) ${MY_A}"
		use sqlplus && multilib_is_native_abi &&
		eerror "         SQL*Plus: $(oic_distfile_status ${MY_A_sqlplus}) ${MY_A_sqlplus}"
		use tools && multilib_is_native_abi &&
		eerror "            Tools: $(oic_distfile_status ${MY_A_tools}) ${MY_A_tools}"
		use sdk && multilib_is_native_abi &&
		eerror "              SDK: $(oic_distfile_status ${MY_A_sdk}) ${MY_A_sdk}"
		use jdbc &&
		eerror "             JDBC: $(oic_distfile_status ${MY_A_jdbc}) ${MY_A_jdbc}"
		use odbc &&
		eerror "             ODBC: $(oic_distfile_status ${MY_A_odbc}) ${MY_A_odbc}"
		use precomp &&
		eerror "      Precompiler: $(oic_distfile_status ${MY_A_precomp}) ${MY_A_precomp}"
	done
	eerror "After downloading these files (for *all* shown architectures),"
	eerror "put them in your DISTDIR filesystem directory."
}

src_unpack() {
	local ABI
	for ABI in $(multilib_get_enabled_abis)
	do
		set_my_abivars || continue
		mkdir -p "${MY_WORKDIR}" || die
		cd "${MY_WORKDIR}" || die
		unpack ${MY_A}
		use jdbc    && unpack ${MY_A_jdbc}
		use odbc    && unpack ${MY_A_odbc}
		use precomp && unpack ${MY_A_precomp}
		if multilib_is_native_abi; then
			use sdk     && unpack ${MY_A_sdk}
			use sqlplus && unpack ${MY_A_sqlplus}
			use tools   && unpack ${MY_A_tools}
		fi
	done
}

src_prepare() {
	if use sdk; then
		rm sdk/include/ldap.h || die #299562
		PATCHES=( "${FILESDIR}"/18.3.0.0-makefile.patch )
	fi
	default
}

# silence configure&compile messages from multilib-minimal
src_configure() { :; }
src_compile() { :; }

src_install() {
	# all content goes here without version number, bug#578402
	local oracle_home=/usr/$(get_libdir)/oracle/client
	local ldpath=

	local ABI
	for ABI in $(multilib_get_enabled_abis) # last iteration is final ABI
	do
		if ! set_my_abivars; then
			elog "Skipping unsupported ABI ${ABI}."
			continue
		fi
		einfo "Installing runtime for ${MY_PLAT} ..."

		cd "${MY_S}" || die

		# shared libraries
		into "${oracle_home}"
		dolib.so lib*$(get_libname)*
		use precomp && dolib.a cobsqlintf.o

		# ensure to be linkable
		[[ -e libocci$(get_libname) ]] ||
		dosym libocci$(get_libname ${MY_SOVER}) \
			"${oracle_home}"/$(get_libdir)/libocci$(get_libname)
		[[ -e libclntsh$(get_libname) ]] ||
		dosym libclntsh$(get_libname ${MY_SOVER}) \
			"${oracle_home}"/$(get_libdir)/libclntsh$(get_libname)

		# java archives
		insinto "${oracle_home}"/$(get_libdir)
		doins *.jar

		# runtime library path
		ldpath+=${ldpath:+:}${oracle_home}/$(get_libdir)

		# Vanilla filesystem layout does not support multilib
		# installation, so we need to move the libs into the
		# ABI specific libdir.  However, ruby-oci8 build system
		# detects an instantclient along the libraries, and
		# does expect the sdk right there.
		use sdk && dosym ../sdk "${oracle_home}"/$(get_libdir)/sdk

		eend $?
	done

	local DOCS=( BASIC_README )
	local HTML_DOCS=()
	local paxbins=( adrci genezi uidrvci )
	local scripts=()

	if use jdbc; then
		DOCS+=( JDBC_README )
	fi
	if use odbc; then
		DOCS+=( ODBC_README )
		HTML_DOCS+=( help )
		scripts+=( odbc_update_ini.sh )
	fi
	if use precomp; then
		DOCS+=( PRECOMP_README )
		paxbins+=( sdk/{proc,procob,rtsora} )
		insinto "${oracle_home}/precomp/admin"
		doins precomp/admin/{pcs,pcb}cfg.cfg
	fi
	if use sdk; then
		einfo "Installing SDK ..."
		DOCS+=( sdk/SDK_README )
		scripts+=( sdk/ott )
		insinto "${oracle_home}"/$(get_libdir)
		doins sdk/ottclasses.zip
		insinto "${oracle_home}"/sdk
		doins -r sdk/{admin,demo,include}

		# The build system in DBD::Oracle perl module would detect
		# an instantclient along the sharedlibs in ORACLE_HOME, which
		# we cannot provide. But it also knows Oracle eXpress Edition's
		# layout - which we emulate enough here to let DBD::Oracle work.
		dosym ../../sdk/demo/demo.mk "${oracle_home}"/rdbms/demo/demo_xe.mk

		# some build systems expect the headers here, also see bug#652096
		dosym "${oracle_home}"/sdk/include /usr/include/oracle/${MY_PVM}/client

		eend $?
	fi
	if use sqlplus; then
		DOCS+=( SQLPLUS_README )
		paxbins+=( sqlplus )
		insinto "${oracle_home}"/sqlplus/admin
		doins glogin.sql
		dosym "${oracle_home}"/bin/sqlplus /usr/bin/sqlplus
	fi
	if use tools; then
		DOCS+=( TOOLS_README )
		paxbins+=( exp expdp imp impdp sqlldr wrc )
	fi

	einfo "Installing binaries for ${MY_PLAT} ..."
	into "${oracle_home}"
	dobin ${paxbins[*]} ${scripts[*]}
	pushd "${ED}${oracle_home}/bin" >/dev/null || die
	pax-mark -c ${paxbins[*]#*/} || die
	popd >/dev/null || die
	eend $?

	einstalldocs

	# create path for tnsnames.ora
	insinto /etc/oracle
	doins "${FILESDIR}"/tnsnames.ora.sample

	# Add OCI libs to library path
	{
		echo "# ${EPREFIX}/etc/env.d/50${PN}"
		echo "# Do not edit this file, but 99${PN} instead"
		echo
		echo "ORACLE_HOME=${EPREFIX}${oracle_home}"
		echo "LDPATH=${ldpath}"
		echo "TNS_ADMIN=${EPREFIX}/etc/oracle/"
	} > "${T}"/50${PN}

	doenvd "${T}"/50${PN}

	# ensure ORACLE_HOME/lib exists
	[[ -e ${ED}${oracle_home}/lib/. ]] ||
	dosym $(get_libdir) "${oracle_home#/}"/lib
}

pkg_preinst() {
	if [[ -r ${EROOT}/etc/env.d/99${PN} ]]; then
		cp "${EROOT}/etc/env.d/99${PN}" "${ED}/etc/env.d/" || die
	else
		{
			echo "# ${EPREFIX}/etc/env.d/99${PN}"
			echo "# Configure system-wide defaults for your Oracle Instant Client here"
			echo
			echo "#$(grep '^ORACLE_HOME=' "${ED}/etc/env.d/50${PN}")"
			echo "#$(grep '^TNS_ADMIN=' "${ED}/etc/env.d/50${PN}")"
			echo "#NLS_LANG="
		} > "${ED}/etc/env.d/99${PN}"
	fi
}

pkg_postinst() {
	elog "${P} does not provide an sqlnet.ora"
	elog "configuration file, redirecting oracle diagnostics for database-"
	elog "and network-issues into ~USER/oradiag_USER/ instead."
	elog "It should be safe to ignore this message in sqlnet.log there:"
	elog "   Directory does not exist for read/write [ORACLE_HOME/client/log] []"
	elog "See https://bugs.gentoo.org/show_bug.cgi?id=465252 for reference."
	elog "If you want to directly analyse low-level debug info or don't want"
	elog "to see it at all, so you really need an sqlnet.ora file, please"
	elog "consult http://search.oracle.com/search/search?q=sqlnet.ora"
	elog ""
	elog "TNS_ADMIN has been set to ${EPREFIX}/etc/oracle by default,"
	elog "put your tnsnames.ora there or configure TNS_ADMIN"
	elog "to point to your user specific configuration."
	ewarn "Please re-source your shell settings for ORACLE_HOME"
	ewarn "  changes, such as: source ${EPREFIX}/etc/profile"
}