refactor: pairing algorithm

secretsanta/domain.py

@@ -15,20 +15,10 @@ class Group(BaseModel):
 
     @staticmethod
     def pair(names: list[str]) -> dict[str, str]:
-        names_copy = names[:]
-        random.shuffle(names_copy)
-
-        pairings = {}
-        for i, name in enumerate(names):
-            pair = names_copy[i]
-            while pair == name:
-                random.shuffle(names_copy)
-                pair = names_copy[i]
-
-            pairings[name] = pair
-
-        return pairings
-
+        random.shuffle(names)
+        names_copy = names[1:]
+        names_copy.append(names[0])
+        return dict(zip(names, names_copy))
 
 class IRepo(ABC):
     @abstractmethod