add expand param for lines discounts (#1)

tap_stripe/client.py

@@ -37,7 +37,10 @@ def get_starting_time(self, context):
         rep_key = self.get_starting_timestamp(context)
         return rep_key or start_date
 
-    def expand(self,second_request=False):
+    def expand(self):
+        return None
+
+    def lines_expand(self):
         return None
 
     @property
@@ -85,7 +88,9 @@ def get_url_params(
         expansion = self.expand()
         if not self.get_from_events and expansion:
            params["expand[]"] = expansion
-
+           lines_expand = self.lines_expand()
+           if lines_expand:
+               params["expand[]"] = [expansion, lines_expand]
         return params
 
     @property
@@ -134,6 +139,9 @@ def parse_response(self, response: requests.Response) -> Iterable[dict]:
                 params = {}
                 if self.expand():
                     params["expand[]"] = self.expand()
+                    lines_expand = self.lines_expand()
+                    if lines_expand:
+                        params["expand[]"] = [self.expand(), lines_expand]
 
                 response_obj = decorated_request(self.prepare_request_lines(url,params), {})
                 if response_obj.status_code in self.ignore_statuscode:

tap_stripe/streams.py

@@ -26,6 +26,12 @@ def expand(self):
             return "discounts"
         else:
             return "data.discounts"
+
+    def lines_expand(self):
+        if self.get_from_events:
+            return "lines.data.discounts"
+        else:
+            return "data.lines.data.discounts"
 
     schema = th.PropertiesList(
         th.Property("id", th.StringType),