#!/usr/bin/env python2.7
# Copyright 2015 gRPC authors.
#
# 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.
"""Generates the appropriate build.json data for all the naming tests."""

import collections
import hashlib
import json

import yaml

_LOCAL_DNS_SERVER_ADDRESS = '127.0.0.1:15353'


def _append_zone_name(name, zone_name):
    return '%s.%s' % (name, zone_name)


def _build_expected_addrs_cmd_arg(expected_addrs):
    out = []
    for addr in expected_addrs:
        out.append('%s,%s' % (addr['address'], str(addr['is_balancer'])))
    return ';'.join(out)


def _resolver_test_cases(resolver_component_data):
    out = []
    for test_case in resolver_component_data['resolver_component_tests']:
        target_name = _append_zone_name(
            test_case['record_to_resolve'],
            resolver_component_data['resolver_tests_common_zone_name'])
        out.append({
            'test_title':
                target_name,
            'arg_names_and_values': [
                ('target_name', target_name),
                ('do_ordered_address_comparison',
                 test_case['do_ordered_address_comparison']),
                ('expected_addrs',
                 _build_expected_addrs_cmd_arg(test_case['expected_addrs'])),
                ('expected_chosen_service_config',
                 (test_case['expected_chosen_service_config'] or '')),
                ('expected_service_config_error',
                 (test_case['expected_service_config_error'] or '')),
                ('expected_lb_policy', (test_case['expected_lb_policy'] or '')),
                ('enable_srv_queries', test_case['enable_srv_queries']),
                ('enable_txt_queries', test_case['enable_txt_queries']),
                ('inject_broken_nameserver_list',
                 test_case['inject_broken_nameserver_list']),
            ],
        })
    return out


def main():
    resolver_component_data = ''
    with open('test/cpp/naming/resolver_test_record_groups.yaml') as f:
        resolver_component_data = yaml.safe_load(f)

    json = {
        'resolver_tests_common_zone_name':
            resolver_component_data['resolver_tests_common_zone_name'],
        # this data is required by the resolver_component_tests_runner.py.template
        'resolver_component_test_cases':
            _resolver_test_cases(resolver_component_data),
    }

    print(yaml.safe_dump(json))


if __name__ == '__main__':
    main()