From fc4d4ea8559f39316f59d5de396df95e70e5744b Mon Sep 17 00:00:00 2001
From: Yuki Kishimoto <yukikishimoto@protonmail.com>
Date: Wed, 11 Oct 2023 10:03:02 +0200
Subject: [PATCH] nostr: add `relay_list` constructor to `EventBuilder`

---
 crates/nostr/src/event/builder.rs | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/crates/nostr/src/event/builder.rs b/crates/nostr/src/event/builder.rs
index 4fc283890..b1e834e12 100644
--- a/crates/nostr/src/event/builder.rs
+++ b/crates/nostr/src/event/builder.rs
@@ -34,7 +34,7 @@ use crate::types::time::TimeSupplier;
 use crate::types::{ChannelId, Contact, Metadata, Timestamp};
 #[cfg(feature = "std")]
 use crate::SECP256K1;
-use crate::{JsonUtil, UncheckedUrl};
+use crate::{JsonUtil, RelayMetadata, UncheckedUrl};
 
 /// [`EventBuilder`] error
 #[derive(Debug)]
@@ -298,6 +298,17 @@ impl EventBuilder {
         Self::new(Kind::RecommendRelay, url.as_ref(), &[])
     }
 
+    /// Relay list metadata (NIP65)
+    ///
+    /// <https://github.com/nostr-protocol/nips/blob/master/65.md>
+    pub fn relay_list(list: Vec<(UncheckedUrl, Option<RelayMetadata>)>) -> Self {
+        let tags: Vec<Tag> = list
+            .into_iter()
+            .map(|(url, metadata)| Tag::RelayMetadata(url, metadata))
+            .collect();
+        Self::new(Kind::RelayList, "", &tags)
+    }
+
     /// Text note
     ///
     /// <https://github.com/nostr-protocol/nips/blob/master/01.md>