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

   1 use crate::{
   2   activities::{
   3     community::send_activity_in_community,
   4     generate_activity_id,
   5     verify_add_remove_moderator_target,
   6     verify_is_public,
   7     verify_mod_action,
   8     verify_person_in_community,
   9   },
  10   activity_lists::AnnouncableActivities,
  11   generate_moderators_url,
  12   local_instance,
  13   objects::{community::ApubCommunity, person::ApubPerson},
  14   protocol::{activities::community::remove_mod::RemoveMod, InCommunity},
  15   ActorType,
  16 };
  17 use activitypub_federation::{
  18   core::object_id::ObjectId,
  19   data::Data,
  20   traits::{ActivityHandler, Actor},
  21 };
  22 use activitystreams_kinds::{activity::RemoveType, public};
  23 use lemmy_db_schema::{
  24   source::{
  25     community::{CommunityModerator, CommunityModeratorForm},
  26     moderator::{ModAddCommunity, ModAddCommunityForm},
  27   },
  28   traits::{Crud, Joinable},
  29 };
  30 use lemmy_utils::error::LemmyError;
  31 use lemmy_websocket::LemmyContext;
  32 use url::Url;
  33
  34 impl RemoveMod {
  35   #[tracing::instrument(skip_all)]
  36   pub async fn send(
  37     community: &ApubCommunity,
  38     removed_mod: &ApubPerson,
  39     actor: &ApubPerson,
  40     context: &LemmyContext,
  41   ) -> Result<(), LemmyError> {
  42     let id = generate_activity_id(
  43       RemoveType::Remove,
  44       &context.settings().get_protocol_and_hostname(),
  45     )?;
  46     let remove = RemoveMod {
  47       actor: ObjectId::new(actor.actor_id()),
  48       to: vec![public()],
  49       object: ObjectId::new(removed_mod.actor_id()),
  50       target: generate_moderators_url(&community.actor_id)?.into(),
  51       id: id.clone(),
  52       cc: vec![community.actor_id()],
  53       kind: RemoveType::Remove,
  54       audience: Some(ObjectId::new(community.actor_id())),
  55     };
  56
  57     let activity = AnnouncableActivities::RemoveMod(remove);
  58     let inboxes = vec![removed_mod.shared_inbox_or_inbox()];
  59     send_activity_in_community(activity, actor, community, inboxes, true, context).await
  60   }
  61 }
  62
  63 #[async_trait::async_trait(?Send)]
  64 impl ActivityHandler for RemoveMod {
  65   type DataType = LemmyContext;
  66   type Error = LemmyError;
  67
  68   fn id(&self) -> &Url {
  69     &self.id
  70   }
  71
  72   fn actor(&self) -> &Url {
  73     self.actor.inner()
  74   }
  75
  76   #[tracing::instrument(skip_all)]
  77   async fn verify(
  78     &self,
  79     context: &Data<LemmyContext>,
  80     request_counter: &mut i32,
  81   ) -> Result<(), LemmyError> {
  82     verify_is_public(&self.to, &self.cc)?;
  83     let community = self.community(context, request_counter).await?;
  84     verify_person_in_community(&self.actor, &community, context, request_counter).await?;
  85     verify_mod_action(
  86       &self.actor,
  87       self.object.inner(),
  88       community.id,
  89       context,
  90       request_counter,
  91     )
  92     .await?;
  93     verify_add_remove_moderator_target(&self.target, &community)?;
  94     Ok(())
  95   }
  96
  97   #[tracing::instrument(skip_all)]
  98   async fn receive(
  99     self,
 100     context: &Data<LemmyContext>,
 101     request_counter: &mut i32,
 102   ) -> Result<(), LemmyError> {
 103     let community = self.community(context, request_counter).await?;
 104     let remove_mod = self
 105       .object
 106       .dereference(context, local_instance(context).await, request_counter)
 107       .await?;
 108
 109     let form = CommunityModeratorForm {
 110       community_id: community.id,
 111       person_id: remove_mod.id,
 112     };
 113     CommunityModerator::leave(context.pool(), &form).await?;
 114
 115     // write mod log
 116     let actor = self
 117       .actor
 118       .dereference(context, local_instance(context).await, request_counter)
 119       .await?;
 120     let form = ModAddCommunityForm {
 121       mod_person_id: actor.id,
 122       other_person_id: remove_mod.id,
 123       community_id: community.id,
 124       removed: Some(true),
 125     };
 126     ModAddCommunity::create(context.pool(), &form).await?;
 127
 128     // TODO: send websocket notification about removed mod
 129     Ok(())
 130   }
 131 }