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

   1 use crate::{
   2   activities::{
   3     community::{announce::GetCommunity, send_to_community},
   4     generate_activity_id,
   5     verify_activity,
   6     verify_is_public,
   7     verify_person_in_community,
   8     voting::{vote_comment, vote_post},
   9   },
  10   activity_lists::AnnouncableActivities,
  11   fetcher::object_id::ObjectId,
  12   objects::{community::ApubCommunity, person::ApubPerson},
  13   protocol::activities::voting::vote::{Vote, VoteType},
  14   PostOrComment,
  15 };
  16 use activitystreams::public;
  17 use lemmy_api_common::blocking;
  18 use lemmy_apub_lib::{
  19   data::Data,
  20   traits::{ActivityHandler, ActorType},
  21 };
  22 use lemmy_db_schema::{
  23   newtypes::CommunityId,
  24   source::{community::Community, post::Post},
  25   traits::Crud,
  26 };
  27 use lemmy_utils::LemmyError;
  28 use lemmy_websocket::LemmyContext;
  29 use std::ops::Deref;
  30
  31 impl Vote {
  32   pub(in crate::activities::voting) fn new(
  33     object: &PostOrComment,
  34     actor: &ApubPerson,
  35     community: &ApubCommunity,
  36     kind: VoteType,
  37     context: &LemmyContext,
  38   ) -> Result<Vote, LemmyError> {
  39     Ok(Vote {
  40       actor: ObjectId::new(actor.actor_id()),
  41       to: vec![public()],
  42       object: ObjectId::new(object.ap_id()),
  43       cc: vec![community.actor_id()],
  44       kind: kind.clone(),
  45       id: generate_activity_id(kind, &context.settings().get_protocol_and_hostname())?,
  46       unparsed: Default::default(),
  47     })
  48   }
  49
  50   pub async fn send(
  51     object: &PostOrComment,
  52     actor: &ApubPerson,
  53     community_id: CommunityId,
  54     kind: VoteType,
  55     context: &LemmyContext,
  56   ) -> Result<(), LemmyError> {
  57     let community = blocking(context.pool(), move |conn| {
  58       Community::read(conn, community_id)
  59     })
  60     .await??
  61     .into();
  62     let vote = Vote::new(object, actor, &community, kind, context)?;
  63     let vote_id = vote.id.clone();
  64
  65     let activity = AnnouncableActivities::Vote(vote);
  66     send_to_community(activity, &vote_id, actor, &community, vec![], context).await
  67   }
  68 }
  69
  70 #[async_trait::async_trait(?Send)]
  71 impl ActivityHandler for Vote {
  72   type DataType = LemmyContext;
  73   async fn verify(
  74     &self,
  75     context: &Data<LemmyContext>,
  76     request_counter: &mut i32,
  77   ) -> Result<(), LemmyError> {
  78     verify_is_public(&self.to)?;
  79     verify_activity(&self.id, self.actor.inner(), &context.settings())?;
  80     let community = self.get_community(context, request_counter).await?;
  81     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  82     Ok(())
  83   }
  84
  85   async fn receive(
  86     self,
  87     context: &Data<LemmyContext>,
  88     request_counter: &mut i32,
  89   ) -> Result<(), LemmyError> {
  90     let actor = self.actor.dereference(context, request_counter).await?;
  91     let object = self.object.dereference(context, request_counter).await?;
  92     match object {
  93       PostOrComment::Post(p) => vote_post(&self.kind, actor, p.deref(), context).await,
  94       PostOrComment::Comment(c) => vote_comment(&self.kind, actor, &c, context).await,
  95     }
  96   }
  97 }
  98
  99 #[async_trait::async_trait(?Send)]
 100 impl GetCommunity for Vote {
 101   async fn get_community(
 102     &self,
 103     context: &LemmyContext,
 104     request_counter: &mut i32,
 105   ) -> Result<ApubCommunity, LemmyError> {
 106     let object = self.object.dereference(context, request_counter).await?;
 107     let cid = match object {
 108       PostOrComment::Post(p) => p.community_id,
 109       PostOrComment::Comment(c) => {
 110         blocking(context.pool(), move |conn| Post::read(conn, c.post_id))
 111           .await??
 112           .community_id
 113       }
 114     };
 115     let community = blocking(context.pool(), move |conn| Community::read(conn, cid)).await??;
 116     Ok(community.into())
 117   }
 118 }