# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

LUA_COMPAT=( lua{5-{1..4},jit} )
LUA_REQ_USE="deprecated(+)"

inherit lua-single systemd tmpfiles toolchain-funcs mercurial

DESCRIPTION="Prosody is a modern XMPP communication server"
HOMEPAGE="https://prosody.im/"
EHG_REPO_URI="https://hg.prosody.im/trunk"

LICENSE="MIT"
SLOT="0"
IUSE="icu +idn +libevent ldap migration mysql postgres selinux +sqlite +ssl test +zlib"
REQUIRED_USE="
	^^ ( icu idn )
	${LUA_REQUIRED_USE}
"
RESTRICT="!test? ( test )"

DEPEND="
	acct-group/prosody
	acct-user/prosody
	$(lua_gen_cond_dep 'dev-lua/luaexpat[${LUA_USEDEP}]')
	$(lua_gen_cond_dep 'dev-lua/luafilesystem[${LUA_USEDEP}]')
	dev-lua/luarocks[${LUA_SINGLE_USEDEP}]
	$(lua_gen_cond_dep 'dev-lua/luasocket[${LUA_USEDEP}]')
	$(lua_gen_cond_dep 'dev-lua/lua-unbound[${LUA_USEDEP}]')
	$(lua_gen_cond_dep 'dev-lua/readline[${LUA_USEDEP}]')
	icu? ( dev-libs/icu:= )
	idn? ( net-dns/libidn:= )
	ldap? ( $(lua_gen_cond_dep 'dev-lua/lualdap[${LUA_USEDEP}]') )
	libevent? ( $(lua_gen_cond_dep 'dev-lua/luaevent[${LUA_USEDEP}]') )
	dev-libs/openssl:0=
	lua_single_target_lua5-1? ( $(lua_gen_cond_dep 'dev-lua/lua-bit32[lua_targets_lua5-1(-)]') )
	mysql? ( $(lua_gen_cond_dep 'dev-lua/luadbi[mysql,${LUA_USEDEP}]') )
	postgres? ( $(lua_gen_cond_dep 'dev-lua/luadbi[postgres,${LUA_USEDEP}]') )
	sqlite? ( $(lua_gen_cond_dep 'dev-lua/luadbi[sqlite,${LUA_USEDEP}]') )
	ssl? ( $(lua_gen_cond_dep 'dev-lua/luasec[${LUA_USEDEP}]') )
	zlib? ( $(lua_gen_cond_dep 'dev-lua/lua-zlib[${LUA_USEDEP}]') )
	${LUA_DEPS}
"

RDEPEND="
	${DEPEND}
	selinux? ( sec-policy/selinux-jabber )
"

BDEPEND="
	virtual/pkgconfig
	test? ( $(lua_gen_cond_dep 'dev-lua/busted[${LUA_USEDEP}]') )
"

PATCHES=( "${FILESDIR}/${PN}-0.12.0-gentoo.patch" )

DOCS=( doc/ HACKERS AUTHORS )

src_prepare() {
	default

	# Set correct plugin path for optional net-im/prosody-modules package
	sed -e "s/GENTOO_LIBDIR/$(get_libdir)/g" -i prosody.cfg.lua.dist || die

	use lua_single_target_luajit && {
		find . -type f -name "*.lua" -print0 | xargs -0 sed -re "1s%#!.*%#!/usr/bin/env luajit%" -i
	}
}

src_configure() {
	local myeconfargs=(
		--add-cflags="${CFLAGS}"
		--add-ldflags="${LDFLAGS}"
		--c-compiler="$(tc-getCC)"
		--datadir="${EPREFIX}/var/lib/prosody"
		--idn-library="$(usex idn 'idn' 'icu')"
		--libdir="${EPREFIX}/usr/$(get_libdir)"
		--linker="$(tc-getCC)"
		--lua-version="$(usex lua_single_target_luajit '5.1' $(ver_cut 1-2 $(lua_get_version)))"
		--no-example-certs
		--ostype="linux"
		--prefix="${EPREFIX}/usr"
		--runwith="${ELUA}"
		--sysconfdir="${EPREFIX}/etc/prosody"
		--with-lua-include="${EPREFIX}/$(lua_get_include_dir)"
		--with-lua-lib="${EPREFIX}/$(lua_get_cmod_dir)"
		# --cflags="${CFLAGS} -Wall -fPIC -std=c99"
		# --ldflags="${LDFLAGS} -shared"
	)

	use lua_single_target_luajit && {
		myeconfargs+=("--lua-suffix=jit")
	}

	# Since the configure script is handcrafted,
	# and yells at unknown options, do not use 'econf'.

	my_econf() {
		echo "./configure ${@}"
		./configure "${@}"
	}

	my_econf "${myeconfargs[@]}" || die "configure failed"

	rm makefile || die
	mv GNUmakefile Makefile || die
}

src_compile() {
	default
	use migration && (
		cd "${S}/tools/migration"
		emake || die "emake migrator fails"
	)
}

src_install() {
	default

	keepdir /var/lib/prosody

	newinitd "${FILESDIR}"/prosody.initd-r6 prosody
	systemd_newunit "${FILESDIR}"/prosody.service-r3 prosody.service

	newtmpfiles "${FILESDIR}"/prosody.tmpfilesd-r2 prosody.conf

	insinto /etc/logrotate.d
	newins "${FILESDIR}/${PN}".logrotate "${PN}"

	use migration && (
		cd "${S}/tools/migration"
		DESTDIR="${D}" emake install || die "migrator install failed"
		cd "${S}"
		rm -rf tools/migration
		insinto $($(tc-getPKG_CONFIG) ${lua} --variable INSTALL_LMOD)
		doins tools/erlparse.lua
		rm tools/erlparse.lua
		fowners "${PN}:${PN}" -R "/usr/$(get_libdir)/${PN}"
		fperms "775" -R "/usr/$(get_libdir)/${PN}"
		insinto "/usr/$(get_libdir)/${PN}"
		doins -r tools
	)
}

src_test() {
	cd tests
	./run_tests.sh
}

pkg_postinst() {
	local migrate_to_prosody_user="false"
	tmpfiles_process prosody.conf

	if [[ ${REPLACING_VERSIONS} ]]; then
		for v in ${REPLACING_VERSIONS}; do
			if ver_test "${v}" -lt 0.12.0; then
				migrate_to_prosody_user="true"
				break
			fi
		done
	fi

	# Sarting with >=0.12.0, the prosody configuration is now in
	# /etc/prosody and no longer in /etc/jabber.
	# See if we need to migrate the configuration. Furthermore,
	# prosody no longer runs under the, shared via net-im/jabber-base,
	# 'jabber' use, but under its own user.
	# This increase isolation and hence robustness and security.
	if ${migrate_to_prosody_user}; then
		local -A dirs_to_migrate=(
			[/etc/jabber]=/etc/prosody
			[/var/log/jabber]=/var/log/prosody
			[/var/spool/jabber]=/var/lib/prosody
		)

		for src_dir in "${!dirs_to_migrate[@]}"; do
			local eroot_src_dir="${EROOT}/${src_dir}"
			local eroot_dst_dir="${EROOT}/${dirs_to_migrate[${src_dir}]}"

			cp -r "${eroot_src_dir}"/. "${eroot_dst_dir}" || die "Could not copy ${eroot_src_dir} to ${eroot_dst_dir}"

			if [[ -f "${eroot_dst_dir}"/.keep_net-im_jabber-base-0 ]]; then
				rm "${eroot_dst_dir}"/.keep_net-im_jabber-base-0 || die
			fi

			if ! use prefix; then
				chown --recursive prosody:prosody "${eroot_dst_dir}" || die
			fi
		done

		# Update configuration file to match new pathes and permissions
		local mysedargs=(
			-e "'s#/etc/jabber#/etc/prosody#g'"
			-e "'s#/run/jabber#/run/prosody#g'"
			-e "'s#/var/log/jabber#/var/log/prosody#g'"
			-e "'s/prosody_user.*/prosody_user = \"prosody\";/g'"
			-e "'s/prosody_group.*/prosody_group = \"prosody\";/g'"
			-i /etc/prosody/prosody.cfg.lua
		)

		eval sed "${mysedargs[@]}" || die

		ewarn "Newer versions of the prosody (Gentoo) package use ${EROOT}/etc/prosody"
		ewarn "(just as upstream) and *not* anymore ${EROOT}/etc/jabber."
		ewarn "The files from ${EROOT}/etc/jabber where copied to ${EROOT}/etc/prosody."
		ewarn "Also prosody's spool directory became ${EROOT}/var/lib/prosody (was ${EROOT}/var/spool/jabbber)."
		ewarn "Please check your configuration."
	fi

	use migration && (
		einfo 'You have enabled "migration" USE-flag.'
		einfo "If you want to migrate data from Ejabberd server, then"
		einfo "take a look at /usr/$(get_libdir)/${PN}/*{2,to}prosody.lua"
		einfo "migration scripts."
		einfo 'Also, you can find "prosody-migrator" binary as usefull'
		einfo "to migrate data from jabberd14, or between prosody files"
		einfo "storage and SQLite3."
	)
}