crates/api/src/community/add_mod.rs

   1 use crate::Perform;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   community::{AddModToCommunity, AddModToCommunityResponse},
   5   utils::{get_local_user_view_from_jwt, is_mod_or_admin},
   6   websocket::{messages::SendCommunityRoomMessage, UserOperation},
   7   LemmyContext,
   8 };
   9 use lemmy_apub::{
  10   objects::{community::ApubCommunity, person::ApubPerson},
  11   protocol::activities::community::{add_mod::AddMod, remove_mod::RemoveMod},
  12 };
  13 use lemmy_db_schema::{
  14   source::{
  15     community::{Community, CommunityModerator, CommunityModeratorForm},
  16     moderator::{ModAddCommunity, ModAddCommunityForm},
  17     person::Person,
  18   },
  19   traits::{Crud, Joinable},
  20 };
  21 use lemmy_db_views_actor::structs::CommunityModeratorView;
  22 use lemmy_utils::{error::LemmyError, ConnectionId};
  23
  24 #[async_trait::async_trait(?Send)]
  25 impl Perform for AddModToCommunity {
  26   type Response = AddModToCommunityResponse;
  27
  28   #[tracing::instrument(skip(context, websocket_id))]
  29   async fn perform(
  30     &self,
  31     context: &Data<LemmyContext>,
  32     websocket_id: Option<ConnectionId>,
  33   ) -> Result<AddModToCommunityResponse, LemmyError> {
  34     let data: &AddModToCommunity = self;
  35     let local_user_view =
  36       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  37
  38     let community_id = data.community_id;
  39
  40     // Verify that only mods or admins can add mod
  41     is_mod_or_admin(context.pool(), local_user_view.person.id, community_id).await?;
  42     let community = Community::read(context.pool(), community_id).await?;
  43     if local_user_view.person.admin && !community.local {
  44       return Err(LemmyError::from_message("not_a_moderator"));
  45     }
  46
  47     // Update in local database
  48     let community_moderator_form = CommunityModeratorForm {
  49       community_id: data.community_id,
  50       person_id: data.person_id,
  51     };
  52     if data.added {
  53       CommunityModerator::join(context.pool(), &community_moderator_form)
  54         .await
  55         .map_err(|e| LemmyError::from_error_message(e, "community_moderator_already_exists"))?;
  56     } else {
  57       CommunityModerator::leave(context.pool(), &community_moderator_form)
  58         .await
  59         .map_err(|e| LemmyError::from_error_message(e, "community_moderator_already_exists"))?;
  60     }
  61
  62     // Mod tables
  63     let form = ModAddCommunityForm {
  64       mod_person_id: local_user_view.person.id,
  65       other_person_id: data.person_id,
  66       community_id: data.community_id,
  67       removed: Some(!data.added),
  68     };
  69
  70     ModAddCommunity::create(context.pool(), &form).await?;
  71
  72     // Send to federated instances
  73     let updated_mod_id = data.person_id;
  74     let updated_mod: ApubPerson = Person::read(context.pool(), updated_mod_id).await?.into();
  75     let community: ApubCommunity = community.into();
  76     if data.added {
  77       AddMod::send(
  78         &community,
  79         &updated_mod,
  80         &local_user_view.person.into(),
  81         context,
  82       )
  83       .await?;
  84     } else {
  85       RemoveMod::send(
  86         &community,
  87         &updated_mod,
  88         &local_user_view.person.into(),
  89         context,
  90       )
  91       .await?;
  92     }
  93
  94     // Note: in case a remote mod is added, this returns the old moderators list, it will only get
  95     //       updated once we receive an activity from the community (like `Announce/Add/Moderator`)
  96     let community_id = data.community_id;
  97     let moderators = CommunityModeratorView::for_community(context.pool(), community_id).await?;
  98
  99     let res = AddModToCommunityResponse { moderators };
 100     context.chat_server().do_send(SendCommunityRoomMessage {
 101       op: UserOperation::AddModToCommunity,
 102       response: res.clone(),
 103       community_id,
 104       websocket_id,
 105     });
 106     Ok(res)
 107   }
 108 }