#! /usr/bin/python2.4
# Copyright (C) 2007 by Intevation GmbH
# Authors:
# Bernhard Herzog <bh@intevation.de>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with the software for details.

"""Publishes a static web-site with a status report"""

import os
from optparse import OptionParser
from ConfigParser import SafeConfigParser

from treepkg.readconfig import read_config_section
from treepkg.run import call
from treepkg.cmdexpand import cmdexpand

def remove_trailing_slashes(s):
    return s.rstrip("/")

staticweb_desc = ["build_user", "build_host", "build_create",
                  ("build_dir", remove_trailing_slashes),
                  "publish_user", "publish_host",
                  ("publish_dir", remove_trailing_slashes),
                  ("cachedir", remove_trailing_slashes)]

def read_config(filename):
    parser = SafeConfigParser()
    parser.read([filename])
    return read_config_section(parser, "staticweb", staticweb_desc)

def parse_commandline():
    parser = OptionParser()
    dirname = os.path.dirname(__file__)
    parser.set_defaults(config_file=os.path.join(dirname, "staticweb.cfg"))
    parser.add_option("--config-file",
                      help=("The tree packager config file."
                            " Default staticweb.cfg"))
    return parser.parse_args()

def publish_static_site(config_filename):
    config = read_config(config_filename)

    # create web-page on build host
    call(cmdexpand("ssh $build_user$@$build_host $build_create $build_dir",
                   **config))

    # rsync the new web-pages to the local cache
    call(cmdexpand("rsync -rL --delete $build_user$@$build_host:$build_dir/"
                   " $cachedir",
                   **config))

    # rsync the web pages from the local cache to the publishing host
    call(cmdexpand("rsync -rL --delete $cachedir/"
                   " $publish_user$@$publish_host:$publish_dir",
                   **config))


def main():
    options, args = parse_commandline()
    publish_static_site(options.config_file)

main()