#!/usr/bin/python

"""Update gcc snapshots"""

from __future__ import print_function

import distutils.version
import glob
import logging
import re
import shutil
import sys

from common import * # pylint: disable=wildcard-import,unused-wildcard-import


CATEGORY = 'sys-devel'
PN = 'gcc'
URL = 'ftp://gcc.gnu.org/pub/gcc/snapshots/'


def main(argv):
	opts = common_main(argv, CATEGORY, PN)

	remote_list = ver_sort(
		x for x in list_snaps(URL, debug=opts.debug)
		if not x.startswith('LATEST-') and '-' in x)

	# Create the lists of curr/new versions.
	old_pkgs = set(glob.glob('%s-*.ebuild' % PN))
	new_pkgs = set()
	for snap in remote_list:
		m = re.match(r'([0-9.]+)-([0-9.]+)$', snap)
		if m:
			# Turn "5" into "5.0.0" and "4.3" into "4.3.0".
			dots = '.'.join((m.group(1).split('.') + (['0'] * 3))[0:3])
			ebuild = '%s-%s_alpha%s.ebuild' % (PN, dots, m.group(2))
			new_pkgs.add(ebuild)
			logging.debug('found remote %s', ebuild)
		else:
			logging.warning('skipping reomte %s', snap)

	# Create ebuilds for the new versions we found.
	closest_ver = distutils.version.LooseVersion('0')
	for pkg in new_pkgs - old_pkgs:
		logging.info('adding %s', pkg)
		ver = get_ver(pkg)
		for opkg in old_pkgs:
			if '_alpha' not in opkg:
				continue
			over = get_ver(opkg)
			if over < ver and over > closest_ver:
				closest_ver = over
		logging.info(' copying from %s', closest_ver)
		dots, stamp = str(closest_ver).split('-')
		ebuild = '%s-%s_alpha%s.ebuild' % (PN, dots, stamp)
		if not opts.dry_run:
			shutil.copy(ebuild, pkg)
		git(['add', pkg])
		run_ebuild(pkg, 'fetch')
		#run_ebuild(pkg, 'manifest')

	# Clean out the old snapshots.
	for pkg in ver_sort(old_pkgs - new_pkgs):
		if '_alpha' not in pkg:
			continue
		logging.info('cleaning old %s', pkg)
		git(['rm', '-f', pkg])

	run(['repoman', 'manifest'])
	git(['add', 'Manifest'])


if __name__ == '__main__':
	main(sys.argv[1:])