enh(#8): Refactoring code

* Adds CORS configuration in the config file
* Enables CORS to be toggled through config

config/config.yaml

@@ -1,6 +1,7 @@
 Server:
   host: 127.0.0.1
   port: 8000
+  cors: False
   static_folder: frontend/build
 
 Web:

shortenit/main.py

@@ -64,9 +64,9 @@ def shorten_it(config: dict, session: Session, data: str, ttl: int):
             _link = Link(data=data, pointers=[])
 
         _pointer = Pointer(data=identifier, link_id=_link.id, link=_link, ttl=ttl)
+        session.add(_pointer)
         _link.pointers.append(_pointer)
         session.add(_link)
-        session.add(_pointer)
         session.commit()
         return _pointer.data
     return None

shortenit/web.py

@@ -25,7 +25,9 @@ class Web:
         server_config = self.handler.configuration.get("Server", None)
         self.app = Flask(__name__)
         self.setup_routes()
-        CORS(self.app)
+        if server_config and server_config.get("cors", False):
+            self.logger.debug("Enabling CORS...")
+            CORS(self.app)
 
     def setup_routes(self):
         self.app.add_url_rule(