Merge pull request 'improvement: handle limit and set limited in /user_directory/search' (#169) from user-dir-limit into master

Reviewed-on: https://git.koesters.xyz/timo/conduit/pulls/169

src/client_server.rs

@@ -2262,11 +2262,13 @@ pub fn search_users_route(
     db: State<'_, Database>,
     body: Ruma<search_users::Request>,
 ) -> ConduitResult<search_users::Response> {
-    Ok(search_users::Response {
-        results: db
-            .users
-            .iter()
-            .filter_map(|user_id| {
+    let limit = if let Some(limit) = body.limit {
+        u64::from(limit)
+    } else {
+        10
+    } as usize;
+
+    let mut users = db.users.iter().filter_map(|user_id| {
         // Filter out buggy users (they should not exist, but you never know...)
         let user_id = user_id.ok()?;
         if db.users.is_deactivated(&user_id).ok()? {
@@ -2290,11 +2292,12 @@ pub fn search_users_route(
         }
 
         Some(user)
-            })
-            .collect(),
-        limited: false,
-    }
-    .into())
+    });
+
+    let results = users.by_ref().take(limit).collect();
+    let limited = users.next().is_some();
+
+    Ok(search_users::Response { results, limited }.into())
 }
 
 #[cfg_attr(