crates/apub/src/activities/community/update.rs

   1 use crate::{
   2   activities::{
   3     community::announce::AnnouncableActivities,
   4     generate_activity_id,
   5     verify_activity,
   6     verify_mod_action,
   7     verify_person_in_community,
   8   },
   9   activity_queue::send_to_community_new,
  10   extensions::context::lemmy_context,
  11   fetcher::object_id::ObjectId,
  12   objects::{community::Group, ToApub},
  13   ActorType,
  14 };
  15 use activitystreams::{
  16   activity::kind::UpdateType,
  17   base::AnyBase,
  18   primitives::OneOrMany,
  19   unparsed::Unparsed,
  20 };
  21 use lemmy_api_common::blocking;
  22 use lemmy_apub_lib::{values::PublicUrl, ActivityFields, ActivityHandler};
  23 use lemmy_db_queries::{ApubObject, Crud};
  24 use lemmy_db_schema::source::{
  25   community::{Community, CommunityForm},
  26   person::Person,
  27 };
  28 use lemmy_utils::LemmyError;
  29 use lemmy_websocket::{send::send_community_ws_message, LemmyContext, UserOperationCrud};
  30 use serde::{Deserialize, Serialize};
  31 use url::Url;
  32
  33 /// This activity is received from a remote community mod, and updates the description or other
  34 /// fields of a local community.
  35 #[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
  36 #[serde(rename_all = "camelCase")]
  37 pub struct UpdateCommunity {
  38   actor: ObjectId<Person>,
  39   to: [PublicUrl; 1],
  40   // TODO: would be nice to use a separate struct here, which only contains the fields updated here
  41   object: Group,
  42   cc: [ObjectId<Community>; 1],
  43   #[serde(rename = "type")]
  44   kind: UpdateType,
  45   id: Url,
  46   #[serde(rename = "@context")]
  47   context: OneOrMany<AnyBase>,
  48   #[serde(flatten)]
  49   unparsed: Unparsed,
  50 }
  51
  52 impl UpdateCommunity {
  53   pub async fn send(
  54     community: &Community,
  55     actor: &Person,
  56     context: &LemmyContext,
  57   ) -> Result<(), LemmyError> {
  58     let id = generate_activity_id(UpdateType::Update)?;
  59     let update = UpdateCommunity {
  60       actor: ObjectId::new(actor.actor_id()),
  61       to: [PublicUrl::Public],
  62       object: community.to_apub(context.pool()).await?,
  63       cc: [ObjectId::new(community.actor_id())],
  64       kind: UpdateType::Update,
  65       id: id.clone(),
  66       context: lemmy_context(),
  67       unparsed: Default::default(),
  68     };
  69
  70     let activity = AnnouncableActivities::UpdateCommunity(Box::new(update));
  71     send_to_community_new(activity, &id, actor, community, vec![], context).await
  72   }
  73 }
  74
  75 #[async_trait::async_trait(?Send)]
  76 impl ActivityHandler for UpdateCommunity {
  77   async fn verify(
  78     &self,
  79     context: &LemmyContext,
  80     request_counter: &mut i32,
  81   ) -> Result<(), LemmyError> {
  82     verify_activity(self)?;
  83     verify_person_in_community(&self.actor, &self.cc[0], context, request_counter).await?;
  84     verify_mod_action(&self.actor, self.cc[0].clone(), context).await?;
  85     Ok(())
  86   }
  87
  88   async fn receive(
  89     self,
  90     context: &LemmyContext,
  91     _request_counter: &mut i32,
  92   ) -> Result<(), LemmyError> {
  93     let cc = self.cc[0].clone().into();
  94     let community = blocking(context.pool(), move |conn| {
  95       Community::read_from_apub_id(conn, &cc)
  96     })
  97     .await??;
  98
  99     let updated_community =
 100       Group::from_apub_to_form(&self.object, &community.actor_id.clone().into()).await?;
 101     let cf = CommunityForm {
 102       name: updated_community.name,
 103       title: updated_community.title,
 104       description: updated_community.description,
 105       nsfw: updated_community.nsfw,
 106       // TODO: icon and banner would be hosted on the other instance, ideally we would copy it to ours
 107       icon: updated_community.icon,
 108       banner: updated_community.banner,
 109       ..CommunityForm::default()
 110     };
 111     let updated_community = blocking(context.pool(), move |conn| {
 112       Community::update(conn, community.id, &cf)
 113     })
 114     .await??;
 115
 116     send_community_ws_message(
 117       updated_community.id,
 118       UserOperationCrud::EditCommunity,
 119       None,
 120       None,
 121       context,
 122     )
 123     .await?;
 124     Ok(())
 125   }
 126 }