Use database as source for initializing connector

fedireads/books_manager.py

@@ -1,15 +1,37 @@
 ''' select and call a connector for whatever book task needs doing '''
-from fedireads.connectors import OpenLibraryConnector
+import importlib
+
+from fedireads import models
+from fedireads.connectors.settings import CONNECTORS
+
 
-openlibrary = OpenLibraryConnector()
 def get_or_create_book(key):
     ''' pull up a book record by whatever means possible '''
-    return openlibrary.get_or_create_book(key)
+    try:
+        book = models.Book.objects.get(
+            openlibrary_key=key
+        ).select_subclasses()
+        return book
+    except models.Book.DoesNotExist:
+        pass
+
+    connector = get_connector()
+    return connector.get_or_create_book(key)
+
 
 def search(query):
     ''' ya '''
-    return openlibrary.search(query)
+    connector = get_connector()
+    return connector.search(query)
 
 
-def update_book(key):
-    return openlibrary.update_book(key)
+def get_connector(book=None):
+    ''' pick a book data connector '''
+    if book and book.connector:
+        connector_info = book.connector
+    else:
+        connector_info = models.Connector.objects.first()
+
+    classname = CONNECTORS[connector_info.name]['classname']
+    connector = importlib.import_module(classname)
+    return connector.Connector()