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_kinds::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   #[tracing::instrument(skip_all)]
  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_activity_in_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
  74   #[tracing::instrument(skip_all)]
  75   async fn verify(
  76     &self,
  77     context: &Data<LemmyContext>,
  78     request_counter: &mut i32,
  79   ) -> Result<(), LemmyError> {
  80     verify_is_public(&self.to, &self.cc)?;
  81     verify_activity(&self.id, self.actor.inner(), &context.settings())?;
  82     let community = self.get_community(context, request_counter).await?;
  83     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  84     Ok(())
  85   }
  86
  87   #[tracing::instrument(skip_all)]
  88   async fn receive(
  89     self,
  90     context: &Data<LemmyContext>,
  91     request_counter: &mut i32,
  92   ) -> Result<(), LemmyError> {
  93     let actor = self
  94       .actor
  95       .dereference(context, context.client(), request_counter)
  96       .await?;
  97     let object = self
  98       .object
  99       .dereference(context, context.client(), request_counter)
 100       .await?;
 101     match object {
 102       PostOrComment::Post(p) => vote_post(&self.kind, actor, &p, context).await,
 103       PostOrComment::Comment(c) => vote_comment(&self.kind, actor, &c, context).await,
 104     }
 105   }
 106 }
 107
 108 #[async_trait::async_trait(?Send)]
 109 impl GetCommunity for Vote {
 110   #[tracing::instrument(skip_all)]
 111   async fn get_community(
 112     &self,
 113     context: &LemmyContext,
 114     request_counter: &mut i32,
 115   ) -> Result<ApubCommunity, LemmyError> {
 116     let object = self
 117       .object
 118       .dereference(context, context.client(), request_counter)
 119       .await?;
 120     let cid = match object {
 121       PostOrComment::Post(p) => p.community_id,
 122       PostOrComment::Comment(c) => {
 123         blocking(context.pool(), move |conn| Post::read(conn, c.post_id))
 124           .await??
 125           .community_id
 126       }
 127     };
 128     let community = blocking(context.pool(), move |conn| Community::read(conn, cid)).await??;
 129     Ok(community.into())
 130   }
 131 }