def read_file_contents(path):
   try:
       with open('token') as infile:
           return infile.read().strip()
   except FileNotFoundError:
       print("Couldn't find the token file!")
       return None

class ByiloApiClient(object):
   token = None
   session = requests.Session()

   def __init__(self, api_url):

       self.api_url = api_url
       self.login()
       self.token = self.load_token()
       self.headers = {'content-type': 'application/json', 'token': self.token}
       if self.token is None:
           print('Authentication is failed')
       else:
           print('Authentication is successful Token is present.')
       # Authorization
   def login(self):
       username = 'kravchuk@gmail.com'
       password = 'hjb567HgMjylh'
       headers = {'content-type': 'application/json'}
       payload = {
           'email': username,
           'password': password
       }
       r = requests.post(self.api_url + '/auth/admin',
                         data=json.dumps(payload),
                         headers=headers)
       r.raise_for_status()
       self.token = r.json()['token']
       self.save_token(self.token)
       self.session.headers.update({'Authorization': self.token})
       # GET Constraction standarts
   def get_cs(self):
       r = requests.get(self.api_url + '/cs', headers=self.headers)
       r.raise_for_status()
       return r.content
       # GET Clients
   def get_client(self):
       headers = {'content-type': 'application/json', 'token': self.token}
       payload = {'id': 'client id', 'name': 'client name', 'csCount': 'amount of assigned construction standards',
                  'activeUserCount': 'amount of active users'}
       r = requests.get(self.api_url + '/client', headers=self.headers, params=payload)
       r.raise_for_status()
       return r.text
       # POST Client
   def post_client(self):
       json = {'code': 'EN-1993', 'limit': '3','c': '3', 'end': '2016-09-24T16:49:45.415Z'}'
       data = {'name': datetime.datetime.now(), 'csCount': '1', 'code': 'SC', 'email': 'sc@gmail.com', 'phone': '+304422222222', 'country':'Ukraine',
             'city': 'Kiev', 'postcode': '22222', 'address1': 'mazepa str., 2', 'address2': 'petlura str., 2', "csInfo": json }


       r = requests.post(self.api_url + 'client', headers=self.headers, params=data)
       return r.text


   def load_token(self):
       return read_file_contents('token')

   def save_token(self, str):
       with open('token', 'w') as outfile:
           outfile.write(str)