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

   1 use crate::{
   2   activities::verify_community_matches,
   3   local_instance,
   4   objects::{community::ApubCommunity, person::ApubPerson},
   5   protocol::{objects::group::Group, InCommunity},
   6 };
   7 use activitypub_federation::{core::object_id::ObjectId, deser::helpers::deserialize_one_or_many};
   8 use activitystreams_kinds::activity::UpdateType;
   9 use lemmy_utils::error::LemmyError;
  10 use lemmy_websocket::LemmyContext;
  11 use serde::{Deserialize, Serialize};
  12 use url::Url;
  13
  14 /// This activity is received from a remote community mod, and updates the description or other
  15 /// fields of a local community.
  16 #[derive(Clone, Debug, Deserialize, Serialize)]
  17 #[serde(rename_all = "camelCase")]
  18 pub struct UpdateCommunity {
  19   pub(crate) actor: ObjectId<ApubPerson>,
  20   #[serde(deserialize_with = "deserialize_one_or_many")]
  21   pub(crate) to: Vec<Url>,
  22   // TODO: would be nice to use a separate struct here, which only contains the fields updated here
  23   pub(crate) object: Box<Group>,
  24   #[serde(deserialize_with = "deserialize_one_or_many")]
  25   pub(crate) cc: Vec<Url>,
  26   #[serde(rename = "type")]
  27   pub(crate) kind: UpdateType,
  28   pub(crate) id: Url,
  29   pub(crate) audience: Option<ObjectId<ApubCommunity>>,
  30 }
  31
  32 #[async_trait::async_trait(?Send)]
  33 impl InCommunity for UpdateCommunity {
  34   async fn community(
  35     &self,
  36     context: &LemmyContext,
  37     request_counter: &mut i32,
  38   ) -> Result<ApubCommunity, LemmyError> {
  39     let object_community: ApubCommunity = ObjectId::new(self.object.id.clone())
  40       .dereference(context, local_instance(context).await, request_counter)
  41       .await?;
  42     if let Some(audience) = &self.audience {
  43       let audience = audience
  44         .dereference(context, local_instance(context).await, request_counter)
  45         .await?;
  46       verify_community_matches(&audience, object_community.id)?;
  47       Ok(audience)
  48     } else {
  49       Ok(object_community)
  50     }
  51   }
  52 }