nostr: add RelayMetadata::as_str method

Signed-off-by: Yuki Kishimoto <[email protected]>

Author: yukibtc

CHANGELOG.md

@@ -97,6 +97,7 @@
 * nostr: impl `FromIterator<Tag>` for `Tags` ([Yuki Kishimoto])
 * nostr: add `EventDeletionRequest` struct ([Yuki Kishimoto])
 * nostr: add `notifications` field to NIP47 `GetInfoResponse` ([Yuki Kishimoto])
+* nostr: add `RelayMetadata::as_str` method ([Yuki Kishimoto])
 * database: add `Events::force_insert` ([Yuki Kishimoto])
 * pool: event verification cache ([Yuki Kishimoto])
 * pool: add `AdmitPolicy` trait ([Yuki Kishimoto])

crates/nostr/src/nips/nip65.rs

@@ -38,15 +38,22 @@ pub enum RelayMetadata {
     Write,
 }
 
-impl fmt::Display for RelayMetadata {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+impl RelayMetadata {
+    /// Get as `&str`.
+    pub fn as_str(&self) -> &str {
         match self {
-            Self::Read => write!(f, "read"),
-            Self::Write => write!(f, "write"),
+            Self::Read => "read",
+            Self::Write => "write",
         }
     }
 }
 
+impl fmt::Display for RelayMetadata {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}", self.as_str())
+    }
+}
+
 impl FromStr for RelayMetadata {
     type Err = Error;