Add new FSM strategy CHAT_TOPIC strategy.py (#1344)

* Create 1343.feature.rst

* Add new FSM strategy CHAT_TOPIC strategy.py

* ADD CHAT_TOPIC tests test_strategy.py

* Update 1343.feature.rst

* Update strategy.py

* add typing  user_id: Optional[int] = None, middleware.py

* add typing  user_id: Optional[int] = None  base.py

* Update strategy.py

* Update strategy.py

* Update middleware.py

* Update base.py

* Update test_strategy.py

* Update base.py

* Update strategy.py

CHANGES/1343.feature.rst

@@ -0,0 +1 @@
+The new FSM strategy CHAT_TOPIC, which sets the state for the entire topic in the chat, also works in private messages and regular groups without topics.

aiogram/fsm/strategy.py

@@ -7,6 +7,7 @@ class FSMStrategy(Enum):
     CHAT = auto()
     GLOBAL_USER = auto()
     USER_IN_TOPIC = auto()
+    CHAT_TOPIC = auto()
 
 
 def apply_strategy(
@@ -21,4 +22,7 @@ def apply_strategy(
         return user_id, user_id, None
     if strategy == FSMStrategy.USER_IN_TOPIC:
         return chat_id, user_id, thread_id
+    if strategy == FSMStrategy.CHAT_TOPIC:
+        return chat_id, chat_id, thread_id
+
     return chat_id, user_id, None

tests/test_fsm/test_strategy.py

@@ -27,6 +27,9 @@ class TestStrategy:
             [FSMStrategy.USER_IN_TOPIC, CHAT, CHAT],
             [FSMStrategy.USER_IN_TOPIC, PRIVATE, PRIVATE],
             [FSMStrategy.USER_IN_TOPIC, THREAD, THREAD],
+            [FSMStrategy.CHAT_TOPIC, CHAT, (CHAT_ID, CHAT_ID, None)],
+            [FSMStrategy.CHAT_TOPIC, PRIVATE, PRIVATE],
+            [FSMStrategy.CHAT_TOPIC, THREAD, (CHAT_ID, CHAT_ID, THREAD_ID)],
         ],
     )
     def test_strategy(self, strategy, case, expected):