# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI=5
# jruby → support needs to be written properly
USE_RUBY="ruby18 ruby19 ruby20"

RUBY_FAKEGEM_TASK_DOC="moot" # we do it manually, but still declare it
RUBY_FAKEGEM_DOCDIR="html"
RUBY_FAKEGEM_EXTRADOC=""

RUBY_FAKEGEM_GEMSPEC="${PN}.gemspec"

GITHUB_USER="mongodb"
GITHUB_PROJECT="mongo-ruby-driver"
RUBY_S="${GITHUB_USER}-${GITHUB_PROJECT}-*"

inherit multilib ruby-fakegem

DESCRIPTION="A Ruby BSON implementation for MongoDB. (Includes binary C-based extension.)"
HOMEPAGE="http://www.mongodb.org/"
SRC_URI="https://github.com/${GITHUB_USER}/${GITHUB_PROJECT}/tarball/${PV} -> ${GITHUB_PROJECT}-${PV}.tar.gz"

LICENSE="APSL-2"
SLOT="0"
KEYWORDS="amd64 x86"
IUSE="test doc"

ruby_add_bdepend \
	"test? (
		dev-ruby/rake
		dev-ruby/shoulda
		dev-ruby/mocha
		dev-ruby/test-unit:2
	)
	doc? ( virtual/ruby-rdoc )"

all_ruby_prepare() {
	# remove the stuff that is actually part of dev-ruby/mongo
	rm -rf {lib,bin}/mongo*
}

each_ruby_configure() {
	case ${RUBY} in
		*/ruby18|*/ruby19|*/ruby20)
			${RUBY} -C ext/cbson extconf.rb || die "extconf.rb failed"
			;;
		*/jruby)
			${RUBY} -S rake build:java || die "rake build:java failed"
			;;
	esac
}

each_ruby_compile() {
	case ${RUBY} in
		*/ruby18|*/ruby19|*/ruby20)
			emake -C ext/cbson V=1 CFLAGS="${CFLAGS} -fPIC" archflag="${LDFLAGS}"
			mkdir -p lib/bson_ext
			cp ext/cbson/*$(get_modname) lib/bson_ext || die
			;;
		*/jruby)
			die "missing in ebuild"
			;;
	esac
}

all_ruby_compile() {
	# Trying to get the Rakefile to build the sources is more trouble
	# than it's worth, do it manually instead.
	if use doc; then
		rdoc --op html --inline-source lib/**/*.rb || die "rdoc failed"
	fi
}

each_ruby_test() {
	case ${RUBY} in
		*/ruby18|*/ruby19|*/ruby20)
			C_EXT=true ${RUBY} -S rake test:bson || die "tests failed"
			;;
	esac

	${RUBY} -S rake test:bson || die "tests failed"
}

each_ruby_install() {
	# we have to set the library path here because the gemspec tries to
	# load bson itself, and would fail without that.
	RUBYLIB="lib" \
		each_fakegem_install

	# and now we create the simulated gem for bson_ext; we create a file
	# bson_ext.rb within ext so that we don't have to change the
	# bson_ext.gemspec file, and at the same time we ensure that bson
	# gem is loaded when loading bson_ext.
	dodir $(ruby_fakegem_gemsdir)/gems/bson_ext-${PV}/ext
	cat - <<EOF > "${D}/$(ruby_fakegem_gemsdir)/gems/bson_ext-${PV}/ext/bson_ext.rb"
require 'bson'
EOF

	RUBYLIB="lib" \
		RUBY_FAKEGEM_NAME=bson_ext \
		RUBY_FAKEGEM_GEMSPEC=bson_ext.gemspec \
		ruby_fakegem_install_gemspec
}

pkg_postinst() {
	elog "Unlike upstream setup, we do not split bson and bson_ext gem."
	elog "This means that for all the supported targets, the C-based extension"
	elog "is installed by this package, and is available transparently."
}