domain: add Sharing entities and ports (ShareScope, ShareTarget, ShareLink, InviteCode, VisibilityFilter)

crates/domain/tests/entities/share_scope.rs

@@ -0,0 +1,16 @@
+use chrono::{Duration, Utc};
+use domain::entities::{ScopeType, ShareScope, ShareableType};
+use domain::value_objects::{DateTimeStamp, SystemId};
+
+#[test]
+fn not_expired_when_no_expiry() {
+    let scope = ShareScope::new(ScopeType::Link, ShareableType::Album, SystemId::new(), SystemId::new());
+    assert!(!scope.is_expired());
+}
+
+#[test]
+fn expired_when_past() {
+    let mut scope = ShareScope::new(ScopeType::Link, ShareableType::Album, SystemId::new(), SystemId::new());
+    scope.expires_at = Some(DateTimeStamp::from_datetime(Utc::now() - Duration::hours(1)));
+    assert!(scope.is_expired());
+}