chore: refactor backend around domain types (#26)

Reviewed-on: #26

crates/signed_core/src/addr.rs

@@ -1,23 +1,99 @@
+use std::fmt;
+use std::str::FromStr;
+
 use nostr::prelude::*;
+use serde::{Deserialize, Serialize};
 
-/// Address of a NIP-34 repository announcement, `30617:<owner-pubkey>:<repo-id>`.
-///
-/// The Rust Nostr SDK's [`Coordinate`] parses, formats and hashes this,
-/// the alias reuses the SDK type while keeping repository-specific vocabulary.
-pub type RepoAddr = Coordinate;
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+#[serde(transparent)]
+pub struct RepoAddr(Coordinate);
 
-pub fn repo_addr(owner: PublicKey, id: impl Into<String>) -> RepoAddr {
-    Coordinate::new(Kind::GitRepoAnnouncement, owner).identifier(id)
+impl RepoAddr {
+    pub fn new(owner: PublicKey, identifier: impl Into<String>) -> Self {
+        Self(Coordinate::new(Kind::GitRepoAnnouncement, owner).identifier(identifier))
+    }
+
+    pub fn identifier_from_name(name: &str) -> String {
+        name.chars()
+            .map(|c| {
+                if c.is_ascii_alphanumeric() || c == '/' {
+                    c
+                } else {
+                    '-'
+                }
+            })
+            .collect()
+    }
+
+    pub fn kind(&self) -> Kind {
+        self.0.kind
+    }
+
+    pub fn public_key(&self) -> PublicKey {
+        self.0.public_key
+    }
+
+    pub fn identifier(&self) -> &str {
+        &self.0.identifier
+    }
+
+    pub fn coordinate(&self) -> &Coordinate {
+        &self.0
+    }
+
+    pub fn announcement_filter(&self) -> Filter {
+        Filter::new()
+            .kind(Kind::GitRepoAnnouncement)
+            .author(self.public_key())
+            .identifier(self.identifier())
+    }
+
+    pub fn state_filter(&self) -> Filter {
+        Filter::new()
+            .kind(Kind::RepoState)
+            .author(self.public_key())
+            .identifier(self.identifier())
+    }
+
+    // Statuses may omit the `a` tag per NIP-34; those are not matched here.
+    pub fn activity_filter(&self) -> Filter {
+        Filter::new()
+            .kinds(crate::filters::ACTIVITY_KINDS)
+            .coordinate(&self.0)
+    }
+
+    pub fn deletion_filters(&self) -> Vec<Filter> {
+        vec![
+            Filter::new()
+                .kinds([Kind::EventDeletion, Kind::RequestToVanish])
+                .author(self.public_key()),
+            Filter::new().kind(Kind::EventDeletion).coordinate(&self.0),
+        ]
+    }
 }
 
-pub fn identifier_from_name(name: &str) -> String {
-    name.chars()
-        .map(|c| {
-            if c.is_ascii_alphanumeric() || c == '/' {
-                c
-            } else {
-                '-'
-            }
-        })
-        .collect()
+impl fmt::Display for RepoAddr {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt::Display::fmt(&self.0, f)
+    }
+}
+
+impl FromStr for RepoAddr {
+    type Err = <Coordinate as FromStr>::Err;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        Coordinate::from_str(s).map(RepoAddr)
+    }
+}
+
+impl From<Coordinate> for RepoAddr {
+    fn from(coordinate: Coordinate) -> Self {
+        RepoAddr(coordinate)
+    }
+}
+
+impl From<RepoAddr> for Coordinate {
+    fn from(addr: RepoAddr) -> Self {
+        addr.0
+    }
 }