"""Utils for making requests to graphql-router."""

from gql import Client
from gql import gql as gql_query
from gql.transport.requests import RequestsHTTPTransport

import product_review.config as config

def strip_query(query_string):
    """Strip newlines and extra spaces from query string."""
    return ' '.join(query_string.split()).replace('\n', '')


def make_request(query_string, params, headers={}):
    """Format and send request to graphql-router.

    Args:
        query_string (str): graphql formatted request body
        params (dict): parameters to inject into body
        headers (dict): HTTP headers for request

    Returns:
        dict: response directly from graphql-router
    """
    headers['apollographql-client-name'] = config.SERVICE_NAME
    headers['apollographql-client-version'] = '1'
    transport = RequestsHTTPTransport(
        url=config.GRAPHQL_URL,
        use_json=True,
        headers=headers,
        verify=True,
        retries=3
    )
    client = Client(
        transport=transport,
        fetch_schema_from_transport=False,
    )
    query = gql_query(query_string)
    return client.execute(query, variable_values=params)