refactor code

src/session_cache.py

@@ -0,0 +1,31 @@
+from uuid import UUID
+
+from pydantic import BaseModel
+
+
+class SessionCacheModel(BaseModel):
+    session_id: UUID
+    set_interface: list[int] | None = None
+    confirm_interface: list[int] | None = None
+    set_key_entry: list[int] | None = None
+    confirm_key_entry: list[int] | None = None
+    username: str | None = None
+    customer_id: UUID
+
+    def deduce_passcode(self, attrs_per_key, confirm_key_entry: list[int]) -> list[int]:
+        set_key_entry = self.set_key_entry
+        assert (len(set_key_entry) == len(confirm_key_entry))
+        set_interface = self.set_interface
+        confirm_interface = self.confirm_interface
+        set_key_vals = [set_interface[key * attrs_per_key:(key + 1) * attrs_per_key] for key in set_key_entry]
+        confirm_key_vals = [confirm_interface[key * attrs_per_key:(key + 1) * attrs_per_key] for key in
+                            confirm_key_entry]
+
+        passcode = []
+        for idx in range(len(set_key_entry)):
+            set_key = set(set_key_vals[idx])
+            confirm_key = set(confirm_key_vals[idx])
+            intersection = list(set_key.intersection(confirm_key))
+            assert (len(intersection) == 1)
+            passcode.append(intersection[0])
+        return passcode