crates/apub/src/activities/comment/create_or_update.rs

   1 use crate::{
   2   activities::{
   3     check_community_deleted_or_removed,
   4     comment::get_notif_recipients,
   5     community::{announce::GetCommunity, send_activity_in_community},
   6     generate_activity_id,
   7     verify_activity,
   8     verify_is_public,
   9     verify_person_in_community,
  10   },
  11   activity_lists::AnnouncableActivities,
  12   objects::{comment::ApubComment, community::ApubCommunity, person::ApubPerson},
  13   protocol::activities::{create_or_update::comment::CreateOrUpdateComment, CreateOrUpdateType},
  14 };
  15 use activitystreams::{link::LinkExt, public};
  16 use lemmy_api_common::{blocking, check_post_deleted_or_removed};
  17 use lemmy_apub_lib::{
  18   data::Data,
  19   object_id::ObjectId,
  20   traits::{ActivityHandler, ActorType, ApubObject},
  21   verify::verify_domains_match,
  22 };
  23 use lemmy_db_schema::{
  24   source::{community::Community, post::Post},
  25   traits::Crud,
  26 };
  27 use lemmy_utils::LemmyError;
  28 use lemmy_websocket::{send::send_comment_ws_message, LemmyContext, UserOperationCrud};
  29
  30 impl CreateOrUpdateComment {
  31   pub async fn send(
  32     comment: ApubComment,
  33     actor: &ApubPerson,
  34     kind: CreateOrUpdateType,
  35     context: &LemmyContext,
  36     request_counter: &mut i32,
  37   ) -> Result<(), LemmyError> {
  38     // TODO: might be helpful to add a comment method to retrieve community directly
  39     let post_id = comment.post_id;
  40     let post = blocking(context.pool(), move |conn| Post::read(conn, post_id)).await??;
  41     let community_id = post.community_id;
  42     let community: ApubCommunity = blocking(context.pool(), move |conn| {
  43       Community::read(conn, community_id)
  44     })
  45     .await??
  46     .into();
  47
  48     let id = generate_activity_id(
  49       kind.clone(),
  50       &context.settings().get_protocol_and_hostname(),
  51     )?;
  52     let note = comment.into_apub(context).await?;
  53
  54     let create_or_update = CreateOrUpdateComment {
  55       actor: ObjectId::new(actor.actor_id()),
  56       to: vec![public()],
  57       cc: note.cc.clone(),
  58       tag: note.tag.clone(),
  59       object: note,
  60       kind,
  61       id: id.clone(),
  62       unparsed: Default::default(),
  63     };
  64
  65     let tagged_users: Vec<ObjectId<ApubPerson>> = create_or_update
  66       .tag
  67       .iter()
  68       .map(|t| t.href())
  69       .flatten()
  70       .map(|t| ObjectId::new(t.clone()))
  71       .collect();
  72     let mut inboxes = vec![];
  73     for t in tagged_users {
  74       let person = t.dereference(context, request_counter).await?;
  75       inboxes.push(person.shared_inbox_or_inbox_url());
  76     }
  77
  78     let activity = AnnouncableActivities::CreateOrUpdateComment(create_or_update);
  79     send_activity_in_community(activity, &id, actor, &community, inboxes, context).await
  80   }
  81 }
  82
  83 #[async_trait::async_trait(?Send)]
  84 impl ActivityHandler for CreateOrUpdateComment {
  85   type DataType = LemmyContext;
  86
  87   async fn verify(
  88     &self,
  89     context: &Data<LemmyContext>,
  90     request_counter: &mut i32,
  91   ) -> Result<(), LemmyError> {
  92     verify_is_public(&self.to, &self.cc)?;
  93     let post = self.object.get_parents(context, request_counter).await?.0;
  94     let community = self.get_community(context, request_counter).await?;
  95
  96     verify_activity(&self.id, self.actor.inner(), &context.settings())?;
  97     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  98     verify_domains_match(self.actor.inner(), self.object.id.inner())?;
  99     check_community_deleted_or_removed(&community)?;
 100     check_post_deleted_or_removed(&post)?;
 101
 102     ApubComment::verify(&self.object, self.actor.inner(), context, request_counter).await?;
 103     Ok(())
 104   }
 105
 106   async fn receive(
 107     self,
 108     context: &Data<LemmyContext>,
 109     request_counter: &mut i32,
 110   ) -> Result<(), LemmyError> {
 111     let comment = ApubComment::from_apub(self.object, context, request_counter).await?;
 112     let recipients = get_notif_recipients(&self.actor, &comment, context, request_counter).await?;
 113     let notif_type = match self.kind {
 114       CreateOrUpdateType::Create => UserOperationCrud::CreateComment,
 115       CreateOrUpdateType::Update => UserOperationCrud::EditComment,
 116     };
 117     send_comment_ws_message(
 118       comment.id, notif_type, None, None, None, recipients, context,
 119     )
 120     .await?;
 121     Ok(())
 122   }
 123 }
 124
 125 #[async_trait::async_trait(?Send)]
 126 impl GetCommunity for CreateOrUpdateComment {
 127   async fn get_community(
 128     &self,
 129     context: &LemmyContext,
 130     request_counter: &mut i32,
 131   ) -> Result<ApubCommunity, LemmyError> {
 132     let post = self.object.get_parents(context, request_counter).await?.0;
 133     let community = blocking(context.pool(), move |conn| {
 134       Community::read(conn, post.community_id)
 135     })
 136     .await??;
 137     Ok(community.into())
 138   }
 139 }