nostr: add Event::coordinates method

rust-nostr · Dec 4, 2023 · 3985caa · 3985caa
1 parent c8f8c44
commit 3985caa
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/crates/nostr/src/event/mod.rs b/crates/nostr/src/event/mod.rs
@@ -26,6 +26,7 @@ pub use self::kind::Kind;
 pub use self::partial::{MissingPartialEvent, PartialEvent};
 pub use self::tag::{Marker, Tag, TagIndexValues, TagIndexes, TagKind};
 pub use self::unsigned::UnsignedEvent;
+use crate::nips::nip01::Coordinate;
 #[cfg(feature = "std")]
 use crate::types::time::Instant;
 use crate::types::time::TimeSupplier;
@@ -292,6 +293,24 @@ impl Event {
         })
     }
 
+    /// Extract coordinates from tags (`a` tag)
+    pub fn coordinates(&self) -> impl Iterator<Item = Coordinate> + '_ {
+        self.tags.iter().filter_map(|t| match t {
+            Tag::A {
+                kind,
+                public_key,
+                identifier,
+                ..
+            } => Some(Coordinate {
+                kind: *kind,
+                pubkey: *public_key,
+                identifier: identifier.clone(),
+                relays: Vec::new(),
+            }),
+            _ => None,
+        })
+    }
+
     /// Build tags index
     pub fn build_tags_index(&self) -> TagIndexes {
         TagIndexes::from(self.tags.iter().map(|t| t.as_vec()))