implement login tutorial

nkode_api.py

@@ -1,6 +1,5 @@
 from uuid import UUID, uuid4
 from pydantic import BaseModel
-
 from src.customer import Customer
 from src.models import NKodePolicy, KeypadSize
 from src.user import User
@@ -25,7 +24,7 @@ class NKodeAPI(BaseModel):
 
         return new_customer.customer_id
 
-    def generate_index_interface(self, customer_id: UUID) -> tuple[UUID, list[int]]:
+    def generate_signup_interface(self, customer_id: UUID) -> tuple[UUID, list[int]]:
         assert (customer_id in self.customers.keys())
         customer = self.customers[customer_id]
         login_interface = UserInterface.new(customer.attributes.keypad_size)
@@ -80,7 +79,7 @@ class NKodeAPI(BaseModel):
         del self.signup_sessions[session_id]
         return True
 
-    def get_login_index_interface(self, username: str, customer_id: UUID) -> list[int]:
+    def get_login_interface(self, username: str, customer_id: UUID) -> list[int]:
         """
         TODO: how do we prevent a targeted denial-of-service attack?
         """