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#
# The MIT License (MIT)
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# Copyright (c) 2016 Marcos Cardoso
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"""Elastic mock module used for testing"""
from functools import wraps
from typing import Dict

from elasticsearch.client import _normalize_hosts
from mock import patch

from .fake_elasticsearch import FakeElasticsearch

ELASTIC_INSTANCES = {}  # type: Dict[str, FakeElasticsearch]


# noinspection PyUnusedLocal
def _get_elasticmock(hosts=None, *args, **kwargs):  # pylint: disable=unused-argument
    host = _normalize_hosts(hosts)[0]
    elastic_key = '{0}:{1}'.format(
        host.get('host', 'localhost'), host.get('port', 9200)
    )

    if elastic_key in ELASTIC_INSTANCES:
        connection = ELASTIC_INSTANCES.get(elastic_key)
    else:
        connection = FakeElasticsearch()
        ELASTIC_INSTANCES[elastic_key] = connection
    return connection


def elasticmock(function):
    """Elasticmock decorator"""
    @wraps(function)
    def decorated(*args, **kwargs):
        ELASTIC_INSTANCES.clear()
        with patch('elasticsearch.Elasticsearch', _get_elasticmock):
            result = function(*args, **kwargs)
        return result
    return decorated
