import logging
import sys
import webbrowser
import os
import yaml
from googleads import adwords, oauth2
from io import StringIO
from oauth2client import client
import time
import datetime
import codecs

PATH = os.getcwd()+'\\googleads.yaml'

# open the yaml file to get credentials from it
with open(PATH, 'r') as f:
  # yaml_data is a json-like nested dict - first key is "adwords"
  yaml_data = yaml.safe_load(f.read())
  # for each key in the yaml_data
  for yaml_key in yaml_data:
    # get credentials related to each key
    auth_data = yaml_data.get(yaml_key)
    # use auth_data to create an oauth client
    oauth2_client = oauth2.GoogleRefreshTokenClient(
      auth_data['client_id'],
      auth_data['client_secret'],
      auth_data['refresh_token']
      )
    # use the oauth2_client created above as a parameter to make an adwords_client
    adwords_client = adwords.AdWordsClient(
      auth_data['developer_token'],
      oauth2_client,
      auth_data['user_agent'],
      client_customer_id = auth_data['client_customer_id']
      )
    # creates a service object using the adwords_client to create a managed service object
    managed_customer_service = adwords_client.GetService(
      'ManagedCustomerService', version='v201607')
    # CustomerId NEEDS to be capitalized even though documentation shows otherwise
    mcc_accounts = managed_customer_service.get(
      {'fields': ['CustomerId'],
       'predicates': [{
        'field': 'CanManageClients',
        'operator': 'NOT_EQUALS',
        'values': True
        }]
      })