Expose leave chat to iOS bridge

crates/tele-ios-ffi/src/lib.rs

@@ -638,6 +638,13 @@ impl SessionHandle {
             .map_err(IosFfiError::from)
     }
 
+    pub fn leave_chat(&self, chat_id: i64) -> Result<(), IosFfiError> {
+        let mut session = self.session.lock().expect("session mutex poisoned");
+        self.runtime
+            .block_on(session.leave_chat(ChatId::new(chat_id)))
+            .map_err(IosFfiError::from)
+    }
+
     pub fn send_message(
         &self,
         chat_id: i64,
@@ -1072,6 +1079,16 @@ impl SessionHandle {
         Ok(profile)
     }
 
+    pub fn leave_chat(&self, chat_id: i64) -> Result<(), IosFfiError> {
+        let mut state = self.state.lock().expect("session mutex poisoned");
+        state.chats.retain(|chat| chat.id != chat_id);
+        state.messages.remove(&chat_id);
+        state.profiles.remove(&chat_id);
+        let chats = state.chats.clone();
+        state.events.push(IosEvent::ChatListChanged { chats });
+        Ok(())
+    }
+
     pub fn send_message(
         &self,
         chat_id: i64,
@@ -1374,6 +1391,11 @@ mod tests {
         assert!(events
             .iter()
             .any(|event| matches!(event, IosEvent::IncomingNotificationCandidate { .. })));
+
+        session.leave_chat(chats[0].id).unwrap();
+        if !cfg!(feature = "core-session") {
+            assert!(session.load_history(chats[0].id, 20).unwrap().is_empty());
+        }
     }
 
     #[test]