# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7
PYTHON_COMPAT=( python3_{6..9} )

inherit python-r1 readme.gentoo-r1 systemd

MY_P="replicator-${PV/_/}"

DESCRIPTION="Proxy cache for Gentoo packages"
HOMEPAGE="https://github.com/xedakini/replicator"
SRC_URI="https://github.com/xedakini/replicator/archive/v${PV/_/}.tar.gz -> ${P}.tar.gz"

## Maybe this should be GPL-2+; I don't see any statements preventing
## newer versions of the GPL.  But the previous ebuild listed just GPL-2:
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~hppa ~ppc ~sparc ~x86"
IUSE=""
REQUIRED_USE="${PYTHON_REQUIRED_USE}"

RDEPEND="${PYTHON_DEPS}
	sys-apps/portage[${PYTHON_USEDEP}]
	dev-python/aiohttp[${PYTHON_USEDEP}]
"
DEPEND="${RDEPEND}"

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

# Tests downloads files as well as breaks, should be turned into local tests.
RESTRICT="test"

DISABLE_AUTOFORMATTING="yes"
DOC_CONTENTS="
Before starting ${PN}, please follow the next few steps:

- Modify /etc/conf.d/${PN} if required.
- Run \`repcacheman\` to set up the cache.
- Add http_proxy=\"http://serveraddress:8080\" to make.conf on
  the server as well as on the client machines.
- Ideally, make sure each client's FETCHCOMMAND adds the
  X-unique-cache-name header to HTTP requests in each make.conf.
  One way:
    - bzcat /usr/share/doc/$P/fetcher.bz2 > /etc/portage/fetcher
    - chmod 755 /etc/portage/fetcher
    - Add the following to /etc/portage/make.conf:
      FETCHCOMMAND=\"/etc/portage/fetcher -O \\\"\\\${DISTDIR}/\\\${FILE}\\\" \\\"\\\${URI}\\\"\"
      RESUMECOMMAND=\"/etc/portage/fetcher -c -O \\\"\\\${DISTDIR}/\\\${FILE}\\\" \\\"\\\${URI}\\\"\"
  The example fetcher script contents could possibly be turned into a one
  liner if args were positional, using the shell expansion pattern to
  add the following wget argument:
      --header=\\\"X-unique-cache-name: \\\${FILE%.__download__}\\\"
  The bourne shell percent sign expansion is not currently supported by
  portage directly.  Or maybe portage could be enhanced to do this by
  default someday, particularly if a proxy is involved.  See also
  https://forums.gentoo.org/viewtopic-t-1101822-highlight-httpreplicator.html
- Arrange to periodically run repcacheman on this server,
  to clean up the local /usr/portage/distfiles directory.
- Arrange to periodically run something like the following
  on this server.  'eclean' is in app-portage/gentoolkit.
    ( export DISTDIR=/var/cache/http-replicator/
      eclean -i distfiles )
- Even with FETCHCOMMAND fixing most cases, occasionally
  an older invalid version of a file may end up in the cache,
  causing checksum failures when portage tries to fetch
  it.  To recover, either use eclean (above), manually delete
  the relevant file from the cache, or temporarily comment
  out the http_proxy setting.  Commenting only requires
  access to client config, not server cache.
- Make sure GENTOO_MIRRORS in /etc/portage/make.conf
  starts with several good HTTP mirrors.

For more information please refer to the following forum thread:
https://forums.gentoo.org/viewtopic-t-173226.html

Starting with 4.x releases, the conf.d parameters have changed.
"

PATCHES=(
       "${FILESDIR}"/setsid-${PV}.patch
)

src_test() {
	./unit-test && die
}

src_install() {
	python_foreach_impl python_doscript http-replicator extras/repcacheman.py

	newbin "${FILESDIR}"/${PN}-3.0-callrepcacheman-0.1 repcacheman

	python_foreach_impl python_domodule replicator

	newinitd "${FILESDIR}"/${PN}-4.0_alpha2-r3.init http-replicator
	newconfd "${FILESDIR}"/${PN}-4.0_alpha2-r2.conf http-replicator

	systemd_dounit extras/http-replicator.service
	systemd_install_serviced "${FILESDIR}"/http-replicator.service.conf

	dodoc "${FILESDIR}"/fetcher

	dodoc README.md changelog.md
	readme.gentoo_create_doc
}

pkg_postinst() {
	readme.gentoo_print_elog
}