#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2014 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Copy files from source to dest expanding symlinks along the way.
"""

import argparse
from shutil import copytree
import sys

# Ignore these files and directories when copying over files into the snapshot.
IGNORE = set([".hg", "httplib2", "oauth2", "simplejson", "static"])

# In addition to the above files also ignore these files and directories when
# copying over samples into the snapshot.
IGNORE_IN_SAMPLES = set(["googleapiclient", "oauth2client", "uritemplate"])

parser = argparse.ArgumentParser(description=__doc__)

parser.add_argument("--source", default=".", help="Directory name to copy from.")

parser.add_argument("--dest", default="snapshot", help="Directory name to copy to.")


def _ignore(path, names):
    retval = set()
    if path != ".":
        retval = retval.union(IGNORE_IN_SAMPLES.intersection(names))
    retval = retval.union(IGNORE.intersection(names))
    return retval


def main():
    copytree(FLAGS.source, FLAGS.dest, symlinks=True, ignore=_ignore)


if __name__ == "__main__":
    FLAGS = parser.parse_args(sys.argv[1:])
    main()