Expose pinned messages through iOS FFI

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

@@ -591,6 +591,14 @@ impl SessionHandle {
             .map_err(IosFfiError::from)
     }
 
+    pub fn pinned_messages(&self, chat_id: i64) -> Result<Vec<IosMessage>, IosFfiError> {
+        let mut session = self.session.lock().expect("session mutex poisoned");
+        self.runtime
+            .block_on(session.pinned_messages(ChatId::new(chat_id)))
+            .map(|messages| messages.into_iter().map(IosMessage::from).collect())
+            .map_err(IosFfiError::from)
+    }
+
     pub fn open_profile(&self, chat_id: i64) -> Result<IosProfile, IosFfiError> {
         let mut session = self.session.lock().expect("session mutex poisoned");
         self.runtime
@@ -766,13 +774,15 @@ fn seeded_fake_client() -> FakeTdClient {
         online_status: Some("online".to_string()),
     };
 
-    FakeTdClient::new()
+    let mut client = FakeTdClient::new()
         .with_chat(chat.clone())
-        .with_message(chat.id.as_i64(), message)
+        .with_message(chat.id.as_i64(), message.clone())
         .with_profile(chat.id.as_i64(), profile)
         .with_network_state(NetworkState::Ready)
         .with_downloaded_file(100, "/tmp/fake-photo.jpg")
-        .with_downloaded_file(200, "/tmp/fake-voice.ogg")
+        .with_downloaded_file(200, "/tmp/fake-voice.ogg");
+    client.set_current_pinned_message(Some(message));
+    client
 }
 
 #[derive(uniffi::Object)]
@@ -1002,6 +1012,18 @@ impl SessionHandle {
             .collect())
     }
 
+    pub fn pinned_messages(&self, chat_id: i64) -> Result<Vec<IosMessage>, IosFfiError> {
+        let state = self.state.lock().expect("session mutex poisoned");
+        Ok(state
+            .messages
+            .get(&chat_id)
+            .cloned()
+            .unwrap_or_default()
+            .into_iter()
+            .take(1)
+            .collect())
+    }
+
     pub fn open_profile(&self, chat_id: i64) -> Result<IosProfile, IosFfiError> {
         let mut state = self.state.lock().expect("session mutex poisoned");
         let profile = state
@@ -1277,6 +1299,8 @@ mod tests {
 
         let history = session.load_history(chats[0].id, 20).unwrap();
         assert_eq!(history[0].text, "Hello from fake TDLib");
+        let pinned = session.pinned_messages(chats[0].id).unwrap();
+        assert_eq!(pinned[0].text, "Hello from fake TDLib");
 
         let sent = session
             .send_message(chats[0].id, "Hi from Swift".to_string(), None)