From dadcc683362b296d85cccf804463dc9f358c1f4b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Damir=20Jeli=C4=87?= <poljar@termina.org.uk>
Date: Tue, 24 Nov 2020 10:57:21 +0100
Subject: [PATCH] base: Use the room summary for the display name calculation
 if we have one.

---
 matrix_sdk_base/src/store.rs | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/matrix_sdk_base/src/store.rs b/matrix_sdk_base/src/store.rs
index ffc94aaf..84cba3f3 100644
--- a/matrix_sdk_base/src/store.rs
+++ b/matrix_sdk_base/src/store.rs
@@ -214,7 +214,23 @@ impl Room {
 
             let is_own_member = |m: &RoomMember| &m.user_id() == &*own_user_id;
 
-            if heroes_count >= invited_joined {
+            if !inner.summary.heroes.is_empty() {
+                let mut names = stream::iter(inner.summary.heroes.iter())
+                    .take(3)
+                    .filter_map(|u| async move {
+                        let user_id = UserId::try_from(u.as_str()).ok()?;
+                        self.get_member(&user_id).await
+                    })
+                    .map(|mem| {
+                        mem.display_name()
+                            .clone()
+                            .unwrap_or_else(|| mem.user_id().localpart().to_string())
+                    })
+                    .collect::<Vec<String>>()
+                    .await;
+                names.sort();
+                names.join(", ")
+            } else if heroes_count >= invited_joined {
                 let mut names = members
                     .filter(|m| future::ready(is_own_member(m)))
                     .take(3)