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

   1 use crate::{
   2   activities::{
   3     community::{announce::GetCommunity, get_community_from_moderators_url, send_to_community},
   4     generate_activity_id,
   5     verify_activity,
   6     verify_add_remove_moderator_target,
   7     verify_is_public,
   8     verify_mod_action,
   9     verify_person_in_community,
  10   },
  11   activity_lists::AnnouncableActivities,
  12   generate_moderators_url,
  13   objects::{community::ApubCommunity, person::ApubPerson},
  14   protocol::activities::community::remove_mod::RemoveMod,
  15 };
  16 use activitystreams::{activity::kind::RemoveType, public};
  17 use lemmy_api_common::blocking;
  18 use lemmy_apub_lib::{
  19   data::Data,
  20   object_id::ObjectId,
  21   traits::{ActivityHandler, ActorType},
  22 };
  23 use lemmy_db_schema::{
  24   source::community::{CommunityModerator, CommunityModeratorForm},
  25   traits::Joinable,
  26 };
  27 use lemmy_utils::LemmyError;
  28 use lemmy_websocket::LemmyContext;
  29
  30 impl RemoveMod {
  31   pub async fn send(
  32     community: &ApubCommunity,
  33     removed_mod: &ApubPerson,
  34     actor: &ApubPerson,
  35     context: &LemmyContext,
  36   ) -> Result<(), LemmyError> {
  37     let id = generate_activity_id(
  38       RemoveType::Remove,
  39       &context.settings().get_protocol_and_hostname(),
  40     )?;
  41     let remove = RemoveMod {
  42       actor: ObjectId::new(actor.actor_id()),
  43       to: vec![public()],
  44       object: ObjectId::new(removed_mod.actor_id()),
  45       target: generate_moderators_url(&community.actor_id)?.into(),
  46       id: id.clone(),
  47       cc: vec![community.actor_id()],
  48       kind: RemoveType::Remove,
  49       unparsed: Default::default(),
  50     };
  51
  52     let activity = AnnouncableActivities::RemoveMod(remove);
  53     let inboxes = vec![removed_mod.shared_inbox_or_inbox_url()];
  54     send_to_community(activity, &id, actor, community, inboxes, context).await
  55   }
  56 }
  57
  58 #[async_trait::async_trait(?Send)]
  59 impl ActivityHandler for RemoveMod {
  60   type DataType = LemmyContext;
  61   async fn verify(
  62     &self,
  63     context: &Data<LemmyContext>,
  64     request_counter: &mut i32,
  65   ) -> Result<(), LemmyError> {
  66     verify_is_public(&self.to, &self.cc)?;
  67     verify_activity(&self.id, self.actor.inner(), &context.settings())?;
  68     let community = self.get_community(context, request_counter).await?;
  69     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  70     verify_mod_action(&self.actor, &community, context, request_counter).await?;
  71     verify_add_remove_moderator_target(&self.target, &community)?;
  72     Ok(())
  73   }
  74
  75   async fn receive(
  76     self,
  77     context: &Data<LemmyContext>,
  78     request_counter: &mut i32,
  79   ) -> Result<(), LemmyError> {
  80     let community = self.get_community(context, request_counter).await?;
  81     let remove_mod = self.object.dereference(context, request_counter).await?;
  82
  83     let form = CommunityModeratorForm {
  84       community_id: community.id,
  85       person_id: remove_mod.id,
  86     };
  87     blocking(context.pool(), move |conn| {
  88       CommunityModerator::leave(conn, &form)
  89     })
  90     .await??;
  91     // TODO: send websocket notification about removed mod
  92     Ok(())
  93   }
  94 }
  95
  96 #[async_trait::async_trait(?Send)]
  97 impl GetCommunity for RemoveMod {
  98   async fn get_community(
  99     &self,
 100     context: &LemmyContext,
 101     request_counter: &mut i32,
 102   ) -> Result<ApubCommunity, LemmyError> {
 103     get_community_from_moderators_url(&self.target, context, request_counter).await
 104   }
 105 }