# Copyright 2016 The Nomulus Authors. 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.

"""Build rule for unit testing the zip_file() rule."""

load('//java/google/registry/builddefs:defs.bzl', 'ZIPPER', 'runpath')

def _impl(ctx):
  """Implementation of zip_contents_test() rule."""
  cmd = [
      'set -e',
      'repo="$(pwd)"',
      'zipper="${repo}/%s"' % runpath(ctx.file._zipper),
      'archive="${repo}/%s"' % runpath(ctx.file.src),
      ('listing="$("${zipper}" v "${archive}"' +
       ' | grep -v ^d | awk \'{print $3}\' | LC_ALL=C sort)"'),
      'if [[ "${listing}" != "%s" ]]; then' % (
          '\n'.join(ctx.attr.contents.keys())),
      '  echo "archive had different file listing:"',
      '  "${zipper}" v "${archive}" | grep -v ^d',
      '  exit 1',
      'fi',
      'tmp="$(mktemp -d "${TMPDIR:-/tmp}/zip_contents_test.XXXXXXXXXX")"',
      'cd "${tmp}"',
      '"${zipper}" x "${archive}"',
  ]
  for path, data in ctx.attr.contents.items():
    cmd += [
        'if [[ "$(cat "%s")" != "%s" ]]; then' % (path, data),
        '  echo "%s had different contents:"' % path,
        '  cat "%s"' % path,
        '  exit 1',
        'fi',
    ]
  cmd += ['cd "${repo}"',
          'rm -rf "${tmp}"']
  ctx.file_action(
      output=ctx.outputs.executable,
      content='\n'.join(cmd),
      executable=True)
  return struct(runfiles=ctx.runfiles([ctx.file.src, ctx.file._zipper]))

zip_contents_test = rule(
    implementation=_impl,
    test=True,
    attrs={
        'src': attr.label(allow_single_file=True),
        'contents': attr.string_dict(),
        '_zipper': attr.label(default=Label(ZIPPER), single_file=True),
    })