moved http client logic to http_client library

invoice_ninja/http_client/http_client.py

@@ -0,0 +1,57 @@
+import requests
+
+class HTTPClient(object):
+    """HTTP client for Invoice Ninja REST API."""
+
+    def __init__(self, endpoint_url: str = 'https://invoicing.co',
+            api_token: str = str()):
+        self_endpoint_url = 'https://invoicing.co'
+        self._api_token = str()
+        self._headers = dict()
+
+    @property
+    def endpoint_url(self):
+        return self._endpoint_url
+
+    @endpoint_url.setter
+    def endpoint_url(self, endpoint_url: str):
+        self._endpoint_url = endpoint_url
+
+    @property
+    def api_token(self):
+        return self._api_token
+
+    @api_token.setter
+    def api_token(self, api_token: str):
+        self._api_token = api_token
+
+    def add_headers(self, headers: dict):
+        """Add HTTP headers to request."""
+
+        self._headers.update(headers)
+
+    def build_headers(self):
+        """Build Invoice Ninja API headers for request.
+
+            A header dictionary with the API token is returned by default.
+        """
+
+        headers = {
+                'X-API-TOKEN': _api_token,
+                'X-Requested-With': 'XMLHttpRequest'}
+
+        return self._headers.update(headers)
+
+    def send(self, uri: str,
+            payload: dict,
+            method: str = 'get'):
+        """Send request to Invoice Ninja REST API."""
+
+        url = '{}/{}'.format(endpoint_url, uri)
+
+        if method == 'get':
+            return requests.get(url, params=payload)
+            
+        elif method == 'post':
+            return requests.post(url, params=payload)
+