chore: clean up core crate

crates/signed_core/src/upstream.rs

@@ -0,0 +1,33 @@
+use nostr::prelude::*;
+
+use crate::RepoAddr;
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Upstream {
+    pub raw: String,
+    pub addr: Option<RepoAddr>,
+}
+
+impl Upstream {
+    /// Parses a raw `u` tag value, extracting the coordinate when present.
+    pub(crate) fn parse(raw: &str) -> Self {
+        let coordinate = raw.split('|').next().unwrap_or(raw);
+        let addr = coordinate
+            .parse::<Coordinate>()
+            .ok()
+            .filter(|coordinate| coordinate.kind == Kind::GitRepoAnnouncement)
+            .map(RepoAddr::from);
+        Self {
+            raw: raw.to_owned(),
+            addr,
+        }
+    }
+
+    /// Shows the coordinate when parsed, otherwise the raw value.
+    pub fn display(&self) -> String {
+        match &self.addr {
+            Some(addr) => addr.to_string(),
+            None => self.raw.clone(),
+        }
+    }
+}