[REFACTORING]Use method chain instead of if clauses

plume-common/src/activity_pub/mod.rs

@@ -445,16 +445,16 @@ pub trait ToAsUri {
 
 impl ToAsUri for OneOrMany<AnyBase> {
     fn to_as_uri(&self) -> Option<String> {
-        if let Some(prop) = self.as_one() {
+        self.as_one()
-            prop.as_xsd_any_uri().map(|uri| uri.to_string())
+            .and_then(|prop| prop.as_xsd_any_uri().map(|uri| uri.to_string()))
-        } else if let Some(prop) = self.as_many() {
+            .or_else(|| {
-            prop.iter()
+                self.as_many().and_then(|props| {
+                    props
+                        .iter()
                         .next()
-                .and_then(|p| p.as_xsd_any_uri())
+                        .and_then(|prop| prop.as_xsd_any_uri().map(|uri| uri.to_string()))
-                .map(|uri| uri.to_string())
+                })
-        } else {
+            })
-            None
-        }
     }
 }
 

plume-models/src/users.rs

@@ -1074,11 +1074,7 @@ impl FromId07<DbConn> for User {
             ..NewUser::default()
         };
 
-        let avatar_id = if let Some(icon) = acct.object_ref().icon() {
+        let avatar_id = acct.object_ref().icon().and_then(|icon| icon.to_as_uri());
-            icon.to_as_uri()
-        } else {
-            None
-        };
 
         let (ap_url, inst) = {
             let any_base = acct.into_any_base()?;