fix(apb): actually link href is not guaranteed

apb/src/node.rs

@@ -102,7 +102,7 @@ impl<T : super::Base> Node<T> {
 	pub fn id(&self) -> crate::Field<&str> {
 		match self {
 			Node::Empty => Err(crate::FieldErr("id")),
-			Node::Link(uri) => Ok(uri.href()),
+			Node::Link(uri) => uri.href(),
 			Node::Object(obj) => obj.id(),
 			Node::Array(arr) => arr.front().map(|x| x.id()).ok_or(crate::FieldErr("id"))?,
 		}
@@ -111,7 +111,7 @@ impl<T : super::Base> Node<T> {
 	pub fn all_ids(&self) -> Vec<String> {
 		match self {
 			Node::Empty => vec![],
-			Node::Link(uri) => vec![uri.href().to_string()],
+			Node::Link(uri) => uri.href().map(|x| vec![x.to_string()]).unwrap_or_default(),
 			Node::Object(x) => x.id().map_or(vec![], |x| vec![x.to_string()]),
 			Node::Array(x) => x.iter().filter_map(|x| Some(x.id().ok()?.to_string())).collect()
 		}
@@ -236,7 +236,7 @@ impl From<Node<serde_json::Value>> for serde_json::Value {
 	fn from(value: Node<serde_json::Value>) -> Self {
 		match value {
 			Node::Empty => serde_json::Value::Null,
-			Node::Link(l) => serde_json::Value::String(l.href().to_string()), // TODO there could be more
+			Node::Link(l) => serde_json::Value::String(l.href().unwrap_or_default().to_string()), // TODO there could be more
 			Node::Object(o) => *o,
 			Node::Array(arr) =>
 				serde_json::Value::Array(arr.into_iter().map(|x| x.into()).collect()),

apb/src/types/link.rs

@@ -19,7 +19,7 @@ crate::strenum! {
 
 pub trait Link : crate::Base {
 	fn link_type(&self) -> Field<LinkType> { Err(FieldErr("type")) }
-	fn href(&self) -> &str;
+	fn href(&self) -> Field<&str>;
 	fn rel(&self) -> Field<&str> { Err(FieldErr("rel")) }
 	fn media_type(&self) -> Field<&str> { Err(FieldErr("mediaType")) } // also in obj
 	fn name(&self) -> Field<&str> { Err(FieldErr("name")) }       // also in obj
@@ -31,7 +31,7 @@ pub trait Link : crate::Base {
 
 pub trait LinkMut : crate::BaseMut {
 	fn set_link_type(self, val: Option<LinkType>) -> Self;
-	fn set_href(self, href: &str) -> Self;
+	fn set_href(self, href: Option<&str>) -> Self;
 	fn set_rel(self, val: Option<&str>) -> Self;
 	fn set_media_type(self, val: Option<&str>) -> Self; // also in obj
 	fn set_name(self, val: Option<&str>) -> Self;       // also in obj
@@ -42,19 +42,19 @@ pub trait LinkMut : crate::BaseMut {
 }
 
 impl Link for String {
-	fn href(&self) -> &str {
+	fn href(&self) -> Field<&str> {
-		self
+		Ok(self)
 	}
 }
 
 #[cfg(feature = "unstructured")]
 impl Link for serde_json::Value {
 	// TODO this can fail, but it should never do!
-	fn href(&self) -> &str {
+	fn href(&self) -> Field<&str> {
 		if self.is_string() {
-			self.as_str().unwrap_or("")
+			self.as_str().ok_or(FieldErr("href"))
 		} else {
-			self.get("href").map(|x| x.as_str().unwrap_or("")).unwrap_or("")
+			self.get("href").and_then(|x| x.as_str()).ok_or(FieldErr("href"))
 		}
 	}
 
@@ -70,15 +70,18 @@ impl Link for serde_json::Value {
 
 #[cfg(feature = "unstructured")]
 impl LinkMut for serde_json::Value {
-	fn set_href(mut self, href: &str) -> Self {
+	fn set_href(mut self, href: Option<&str>) -> Self {
 		match &mut self {
 			serde_json::Value::Object(map) => {
-				map.insert(
+				match href {
+					Some(href) => map.insert(
 						"href".to_string(),
 						serde_json::Value::String(href.to_string())
-				);
+					),
+					None => map.remove("href"),
+				};
 			},
-			x => *x = serde_json::Value::String(href.to_string()),
+			x => *x = serde_json::Value::String(href.unwrap_or_default().to_string()),
 		}
 		self
 	}

upub/core/src/model/mod.rs

@@ -31,7 +31,7 @@ impl<T: apb::Base> From<apb::Node<T>> for Audience {
 		Audience(
 			match value {
 				apb::Node::Empty => vec![],
-				apb::Node::Link(l) => vec![l.href().to_string()],
+				apb::Node::Link(l) => l.href().map(|x| vec![x.to_string()]).unwrap_or_default(),
 				apb::Node::Object(o) => if let Ok(id) = o.id() { vec![id.to_string()] } else { vec![] },
 				apb::Node::Array(arr) => arr.into_iter().filter_map(|l| l.id().str()).collect(),
 			}

upub/core/src/selector/rich.rs

@@ -12,7 +12,7 @@ impl RichMention {
 		use apb::LinkMut;
 		apb::new()
 			.set_link_type(Some(apb::LinkType::Mention))
-			.set_href(&self.id)
+			.set_href(Some(&self.id))
 			.set_name(Some(&self.fqn))
 	}
 }

upub/core/src/traits/fetch.rs

@@ -427,12 +427,14 @@ pub trait Fetchable : Sync + Send {
 impl Fetchable for apb::Node<serde_json::Value> {
 	async fn fetch(&mut self, ctx: &crate::Context) -> Result<&mut Self, PullError> {
 		if let apb::Node::Link(uri) = self {
-			*self = crate::Context::request(Method::GET, uri.href(), None, ctx.base(), ctx.pkey(), ctx.domain())
+			if let Ok(href) = uri.href() {
+				*self = crate::Context::request(Method::GET, href, None, ctx.base(), ctx.pkey(), ctx.domain())
 					.await?
 					.json::<serde_json::Value>()
 					.await?
 					.into();
 			}
+		}
 
 		Ok(self)
 	}

upub/core/src/traits/normalize.rs

@@ -77,7 +77,7 @@ impl Normalizer for crate::Context {
 				},
 				Node::Link(l) => crate::model::attachment::ActiveModel {
 					internal: sea_orm::ActiveValue::NotSet,
-					url: Set(l.href().to_string()),
+					url: Set(l.href().unwrap_or_default().to_string()),
 					object: Set(object_model.internal),
 					document_type: Set(apb::DocumentType::Page),
 					name: Set(l.name().str()),
@@ -96,7 +96,8 @@ impl Normalizer for crate::Context {
 				Node::Empty | Node::Object(_) | Node::Array(_) => {},
 				Node::Link(l) => match l.link_type() {
 					Ok(apb::LinkType::Mention) => {
-						if let Some(internal) = crate::model::actor::Entity::ap_to_internal(l.href(), tx).await? {
+						if let Ok(href) = l.href() {
+							if let Some(internal) = crate::model::actor::Entity::ap_to_internal(href, tx).await? {
 								let model = crate::model::mention::ActiveModel {
 									internal: NotSet,
 									object: Set(object_model.internal),
@@ -106,10 +107,11 @@ impl Normalizer for crate::Context {
 									.exec(tx)
 									.await?;
 							}
+						}
 					},
 					Ok(apb::LinkType::Hashtag) => {
 						let hashtag = l.name()
-							.unwrap_or_else(|_| l.href().split('/').last().unwrap_or_default())
+							.unwrap_or_else(|_| l.href().unwrap_or_default().split('/').last().unwrap_or_default()) // TODO maybe just fail?
 							.replace('#', "");
 						let model = crate::model::hashtag::ActiveModel {
 							internal: NotSet,

web/src/objects/item.rs

@@ -72,7 +72,7 @@ pub fn Object(
 					})
 				},
 				Ok(apb::LinkType::Mention) => {
-					let uid = apb::Link::href(link.as_ref());
+					let uid = apb::Link::href(link.as_ref()).unwrap_or_default();
 					let mention = apb::Link::name(link.as_ref()).unwrap_or_default().replacen('@', "", 1);
 					let (username, domain) = if let Some((username, server)) = mention.split_once('@') {
 						(username.to_string(), server.to_string())