deserialize_one

crates/apub/src/activities/community/report.rs

@@ -91,7 +91,7 @@ impl Report {
     )?;
     let report = Report {
       actor: actor.id().into(),
-      to: [community.id().into()],
+      to: community.id().into(),
       object: object_id,
       summary: reason,
       kind,

crates/apub/src/activities/create_or_update/private_message.rs

@@ -82,7 +82,7 @@ impl CreateOrUpdateChatMessage {
     let create_or_update = CreateOrUpdateChatMessage {
       id: id.clone(),
       actor: sender.id().into(),
-      to: [recipient.id().into()],
+      to: recipient.id().into(),
       object: ApubPrivateMessage(private_message.clone())
         .into_json(context)
         .await?,
@@ -110,7 +110,7 @@ impl ActivityHandler for CreateOrUpdateChatMessage {
   async fn verify(&self, context: &Data<Self::DataType>) -> Result<(), LemmyError> {
     verify_person(&self.actor, context).await?;
     verify_domains_match(self.actor.inner(), self.object.id.inner())?;
-    verify_domains_match(self.to[0].inner(), self.object.to[0].inner())?;
+    verify_domains_match(self.to.inner(), self.object.to.inner())?;
     ApubPrivateMessage::verify(&self.object, self.actor.inner(), context).await?;
     Ok(())
   }

crates/apub/src/objects/private_message.rs

@@ -83,7 +83,7 @@ impl Object for ApubPrivateMessage {
       r#type: ChatMessageType::ChatMessage,
       id: self.ap_id.clone().into(),
       attributed_to: creator.actor_id.into(),
-      to: [recipient.actor_id.into()],
+      to: recipient.actor_id.into(),
       content: markdown_to_html(&self.content),
       media_type: Some(MediaTypeHtml::Html),
       source: Some(Source::new(self.content.clone())),
@@ -123,7 +123,7 @@ impl Object for ApubPrivateMessage {
     context: &Data<Self::DataType>,
   ) -> Result<ApubPrivateMessage, LemmyError> {
     let creator = note.attributed_to.dereference(context).await?;
-    let recipient = note.to[0].dereference(context).await?;
+    let recipient = note.to.dereference(context).await?;
     check_person_block(creator.id, recipient.id, context.pool()).await?;
 
     let form = PrivateMessageInsertForm {

crates/apub/src/protocol/activities/community/report.rs

@@ -20,7 +20,7 @@ use url::Url;
 pub struct Report {
   pub(crate) actor: ObjectId<ApubPerson>,
   #[serde(deserialize_with = "deserialize_one")]
-  pub(crate) to: [ObjectId<ApubCommunity>; 1],
+  pub(crate) to: ObjectId<ApubCommunity>,
   pub(crate) object: ObjectId<PostOrComment>,
   pub(crate) summary: String,
   #[serde(rename = "type")]
@@ -32,7 +32,7 @@ pub struct Report {
 #[async_trait::async_trait]
 impl InCommunity for Report {
   async fn community(&self, context: &Data<LemmyContext>) -> Result<ApubCommunity, LemmyError> {
-    let community = self.to[0].dereference(context).await?;
+    let community = self.to.dereference(context).await?;
     if let Some(audience) = &self.audience {
       verify_community_matches(audience, community.actor_id.clone())?;
     }

crates/apub/src/protocol/activities/create_or_update/chat_message.rs

@@ -12,7 +12,7 @@ pub struct CreateOrUpdateChatMessage {
   pub(crate) id: Url,
   pub(crate) actor: ObjectId<ApubPerson>,
   #[serde(deserialize_with = "deserialize_one")]
-  pub(crate) to: [ObjectId<ApubPerson>; 1],
+  pub(crate) to: ObjectId<ApubPerson>,
   pub(crate) object: ChatMessage,
   #[serde(rename = "type")]
   pub(crate) kind: CreateOrUpdateType,

crates/apub/src/protocol/activities/following/accept.rs

@@ -2,7 +2,11 @@ use crate::{
   objects::{community::ApubCommunity, person::ApubPerson},
   protocol::activities::following::follow::Follow,
 };
-use activitypub_federation::{fetch::object_id::ObjectId, kinds::activity::AcceptType};
+use activitypub_federation::{
+  fetch::object_id::ObjectId,
+  kinds::activity::AcceptType,
+  protocol::helpers::deserialize_one,
+};
 use serde::{Deserialize, Serialize};
 use url::Url;
 
@@ -11,6 +15,7 @@ use url::Url;
 pub struct AcceptFollow {
   pub(crate) actor: ObjectId<ApubCommunity>,
   /// Optional, for compatibility with platforms that always expect recipient field
+  #[serde(deserialize_with = "deserialize_one")]
   pub(crate) to: Option<ObjectId<ApubPerson>>,
   pub(crate) object: Follow,
   #[serde(rename = "type")]

crates/apub/src/protocol/activities/following/follow.rs

@@ -1,5 +1,9 @@
 use crate::{fetcher::user_or_community::UserOrCommunity, objects::person::ApubPerson};
-use activitypub_federation::{fetch::object_id::ObjectId, kinds::activity::FollowType};
+use activitypub_federation::{
+  fetch::object_id::ObjectId,
+  kinds::activity::FollowType,
+  protocol::helpers::deserialize_one,
+};
 use serde::{Deserialize, Serialize};
 use url::Url;
 
@@ -8,6 +12,7 @@ use url::Url;
 pub struct Follow {
   pub(crate) actor: ObjectId<ApubPerson>,
   /// Optional, for compatibility with platforms that always expect recipient field
+  #[serde(deserialize_with = "deserialize_one")]
   pub(crate) to: Option<ObjectId<UserOrCommunity>>,
   pub(crate) object: ObjectId<UserOrCommunity>,
   #[serde(rename = "type")]

crates/apub/src/protocol/activities/following/undo_follow.rs

@@ -1,5 +1,9 @@
 use crate::{objects::person::ApubPerson, protocol::activities::following::follow::Follow};
-use activitypub_federation::{fetch::object_id::ObjectId, kinds::activity::UndoType};
+use activitypub_federation::{
+  fetch::object_id::ObjectId,
+  kinds::activity::UndoType,
+  protocol::helpers::deserialize_one,
+};
 use serde::{Deserialize, Serialize};
 use url::Url;
 
@@ -8,6 +12,7 @@ use url::Url;
 pub struct UndoFollow {
   pub(crate) actor: ObjectId<ApubPerson>,
   /// Optional, for compatibility with platforms that always expect recipient field
+  #[serde(deserialize_with = "deserialize_one")]
   pub(crate) to: Option<ObjectId<ApubPerson>>,
   pub(crate) object: Follow,
   #[serde(rename = "type")]

crates/apub/src/protocol/objects/chat_message.rs

@@ -21,7 +21,7 @@ pub struct ChatMessage {
   pub(crate) id: ObjectId<ApubPrivateMessage>,
   pub(crate) attributed_to: ObjectId<ApubPerson>,
   #[serde(deserialize_with = "deserialize_one")]
-  pub(crate) to: [ObjectId<ApubPerson>; 1],
+  pub(crate) to: ObjectId<ApubPerson>,
   pub(crate) content: String,
 
   pub(crate) media_type: Option<MediaTypeHtml>,