crates/apub/src/activities/voting/undo_vote.rs

   1 use crate::{
   2   activities::{
   3     generate_activity_id,
   4     verify_person_in_community,
   5     voting::{undo_vote_comment, undo_vote_post},
   6   },
   7   insert_activity,
   8   objects::{community::ApubCommunity, person::ApubPerson},
   9   protocol::{
  10     activities::voting::{undo_vote::UndoVote, vote::Vote},
  11     InCommunity,
  12   },
  13   PostOrComment,
  14 };
  15 use activitypub_federation::{
  16   config::Data,
  17   kinds::activity::UndoType,
  18   protocol::verification::verify_urls_match,
  19   traits::{ActivityHandler, Actor},
  20 };
  21 use lemmy_api_common::context::LemmyContext;
  22 use lemmy_utils::error::LemmyError;
  23 use url::Url;
  24
  25 impl UndoVote {
  26   pub(in crate::activities::voting) fn new(
  27     vote: Vote,
  28     actor: &ApubPerson,
  29     community: &ApubCommunity,
  30     context: &Data<LemmyContext>,
  31   ) -> Result<Self, LemmyError> {
  32     Ok(UndoVote {
  33       actor: actor.id().into(),
  34       object: vote,
  35       kind: UndoType::Undo,
  36       id: generate_activity_id(
  37         UndoType::Undo,
  38         &context.settings().get_protocol_and_hostname(),
  39       )?,
  40       audience: Some(community.id().into()),
  41     })
  42   }
  43 }
  44
  45 #[async_trait::async_trait]
  46 impl ActivityHandler for UndoVote {
  47   type DataType = LemmyContext;
  48   type Error = LemmyError;
  49
  50   fn id(&self) -> &Url {
  51     &self.id
  52   }
  53
  54   fn actor(&self) -> &Url {
  55     self.actor.inner()
  56   }
  57
  58   #[tracing::instrument(skip_all)]
  59   async fn verify(&self, context: &Data<LemmyContext>) -> Result<(), LemmyError> {
  60     let community = self.community(context).await?;
  61     verify_person_in_community(&self.actor, &community, context).await?;
  62     verify_urls_match(self.actor.inner(), self.object.actor.inner())?;
  63     self.object.verify(context).await?;
  64     Ok(())
  65   }
  66
  67   #[tracing::instrument(skip_all)]
  68   async fn receive(self, context: &Data<LemmyContext>) -> Result<(), LemmyError> {
  69     insert_activity(&self.id, &self, false, true, context).await?;
  70     let actor = self.actor.dereference(context).await?;
  71     let object = self.object.object.dereference(context).await?;
  72     match object {
  73       PostOrComment::Post(p) => undo_vote_post(actor, &p, context).await,
  74       PostOrComment::Comment(c) => undo_vote_comment(actor, &c, context).await,
  75     }
  76   }
  77 }