Merge pull request #97 from livechat/API-11719_billing_api

Adding Billing API

Author: remleinpiotr

changelog.md

@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 ## [0.3.6] - TBA
 
 ### Added
+
+- Added support for billing-api.
 - New `highest_available` option for `customer_monitoring_level` in agent-api `login` method.
 
 ### Bugfixes

livechat/billing/__init__.py

@@ -0,0 +1,2 @@
+# pylint: disable=C0114
+from livechat.billing.base import BillingApi

livechat/billing/api/__init__.py

@@ -0,0 +1,2 @@
+# pylint: disable=C0114
+from .v1 import BillingApiV1

livechat/billing/api/v1.py

@@ -0,0 +1,52 @@
+''' Module with base class that allows retrieval of client for specific
+    Billing API version. '''
+
+# pylint: disable=W0613,W0622,C0103,R0913,R0903
+
+from __future__ import annotations
+
+from livechat.config import CONFIG
+
+from .api import BillingApiV1
+
+billing_url = CONFIG.get('billing_url')
+billing_version = CONFIG.get('billing_version')
+
+
+class BillingApi:
+    ''' Base class that allows retrieval of client for specific
+        Billing API version. '''
+    @staticmethod
+    def get_client(token: str,
+                   version: str = billing_version,
+                   base_url: str = billing_url,
+                   http2: bool = False,
+                   proxies: dict = None,
+                   verify: bool = True) -> BillingApiV1:
+        ''' Returns client for specific Billing API version.
+
+            Args:
+                token (str): Full token with type Bearer that will be
+                    used as `Authorization` header in requests to API.
+                version (str): Billing API's version. Defaults to the v1 version of Billing.
+                base_url (str): API's base url. Defaults to API's production URL.
+                http2 (bool): A boolean indicating if HTTP/2 support should be
+                              enabled. Defaults to `False`.
+                proxies (dict): A dictionary mapping proxy keys to proxy URLs.
+                verify (bool): SSL certificates (a.k.a CA bundle) used to
+                               verify the identity of requested hosts. Either `True` (default CA bundle),
+                               a path to an SSL certificate file, an `ssl.SSLContext`, or `False`
+                               (which will disable verification). Defaults to `True`.
+
+            Returns:
+                BillingApi: API client object for specified version.
+
+            Raises:
+                ValueError: If the specified version does not exist.
+        '''
+        client = {
+            '1': BillingApiV1(token, base_url, http2, proxies, verify),
+        }.get(version)
+        if not client:
+            raise ValueError('Provided version does not exist.')
+        return client

livechat/billing/base.py

@@ -2,6 +2,8 @@
 
 CONFIG = {
     'url': 'api.livechatinc.com',
+    'billing_url': 'billing.livechatinc.com',
     'stable': '3.5',
     'dev': '3.6',
+    'billing_version': '1'
 }

livechat/config.py

@@ -0,0 +1,89 @@
+''' Tests for Billing API client. '''
+
+# pylint: disable=E1120,W0621
+
+import pytest
+
+from livechat.billing.base import BillingApi
+from livechat.config import CONFIG
+
+billing_url = CONFIG.get('billing_url')
+billing_version = CONFIG.get('billing_version')
+
+
+@pytest.fixture
+def billing_api_client():
+    ''' Fixture returning Billing API client. '''
+    return BillingApi.get_client(token='test')
+
+
+def test_get_client_without_args():
+    ''' Test if TypeError raised without args. '''
+    with pytest.raises(TypeError) as exception:
+        BillingApi.get_client()
+    assert str(
+        exception.value
+    ) == "get_client() missing 1 required positional argument: 'token'"
+
+
+def test_get_client_without_access_token():
+    ''' Test if TypeError raised without access_token. '''
+    with pytest.raises(TypeError) as exception:
+        BillingApi.get_client(version='test')
+    assert str(
+        exception.value
+    ) == "get_client() missing 1 required positional argument: 'token'"
+
+
+def test_get_client_with_non_existing_version():
+    ''' Test if ValueError raised for non-existing version. '''
+    with pytest.raises(ValueError) as exception:
+        BillingApi.get_client(token='test', version='test')
+    assert str(exception.value) == 'Provided version does not exist.'
+
+
+def test_get_client_with_valid_args(billing_api_client):
+    ''' Test if production API URL is used and token is added to headers for valid args. '''
+    assert billing_api_client.api_url == f'https://{billing_url}/v{billing_version}'
+    assert billing_api_client.session.headers.get('Authorization') == 'test'
+
+
+def test_send_request(billing_api_client):
+    ''' Test if it's possible to send a basic request via Billing API
+        client with arbitrary chosen method. '''
+    assert billing_api_client.create_direct_charge().json() == {
+        'error':
+        'invalid_request',
+        'error_description':
+        'The request is missing a required parameter, includes an invalid parameter value, includes a parameter more than once, or is otherwise malformed.'
+    }
+
+
+def test_modify_header(billing_api_client):
+    ''' Test if Billing API object header can be updated with custom value. '''
+    assert 'test' not in billing_api_client.get_headers()
+    billing_api_client.modify_header({'test': '1234'})
+    assert 'test' in billing_api_client.get_headers()
+
+
+def test_remove_header(billing_api_client):
+    ''' Test if header can be removed from Billing API object. '''
+    billing_api_client.modify_header({'test2': '1234'})
+    assert 'test2' in billing_api_client.get_headers()
+    billing_api_client.remove_header('test2')
+    assert 'test2' not in billing_api_client.get_headers()
+
+
+def test_custom_headers_within_the_request(billing_api_client):
+    ''' Test if custom headers can be added to the session headers
+        only within the particular request. '''
+    headers = {'x-test': 'enabled'}
+    response = billing_api_client.create_direct_charge(headers=headers)
+    assert headers.items() <= response.request.headers.items()
+    assert 'x-test' not in billing_api_client.get_headers()
+
+
+def test_client_supports_http_1():
+    ''' Test if client supports HTTP/1.1 protocol. '''
+    client = BillingApi.get_client(token='test')
+    assert client.create_direct_charge().http_version == 'HTTP/1.1'