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

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