Refactor ABSConnector and its mock to improve library series retrieval and add file caching for library data

connectors/audnexus_connector.py

@@ -1,6 +1,7 @@
 from ratelimit import limits
 import requests
 import json
+import os
 
 
 class AudNexusConnector:
@@ -17,13 +18,22 @@ class AudNexusConnector:
 
 
 class AudNexusConnectorMock(AudNexusConnector):
+    def __init__(self):
+        super().__init__()
+
+        self.directory = "dumps/audnexus"
+        if not os.path.exists(self.directory):
+            os.makedirs(self.directory)
+
     def get_book_from_asin(self, book_asin):
+        path = f"{self.directory}/book_{book_asin}.json"
+
         try:
-            with open(f"dumps/book_{book_asin}.json", "r") as f:
+            with open(path, "r") as f:
                 data = json.load(f)
             return data
         except FileNotFoundError:
             data = AudNexusConnector.get_book_from_asin(self, book_asin)
-            with open(f"dumps/book_{book_asin}.json", "w+") as f:
+            with open(path, "w+") as f:
                 json.dump(data, f, indent=4)
             return data