crates/api/src/community/ban.rs

   1 use crate::Perform;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   community::{BanFromCommunity, BanFromCommunityResponse},
   5   context::LemmyContext,
   6   utils::{is_mod_or_admin, local_user_view_from_jwt, remove_user_data_in_community},
   7   websocket::{
   8     handlers::messages::SendCommunityRoomMessage,
   9     serialize_websocket_message,
  10     UserOperation,
  11   },
  12 };
  13 use lemmy_db_schema::{
  14   source::{
  15     community::{
  16       CommunityFollower,
  17       CommunityFollowerForm,
  18       CommunityPersonBan,
  19       CommunityPersonBanForm,
  20     },
  21     moderator::{ModBanFromCommunity, ModBanFromCommunityForm},
  22   },
  23   traits::{Bannable, Crud, Followable},
  24 };
  25 use lemmy_db_views_actor::structs::PersonView;
  26 use lemmy_utils::{
  27   error::LemmyError,
  28   utils::{time::naive_from_unix, validation::is_valid_body_field},
  29   ConnectionId,
  30 };
  31
  32 #[async_trait::async_trait(?Send)]
  33 impl Perform for BanFromCommunity {
  34   type Response = BanFromCommunityResponse;
  35
  36   #[tracing::instrument(skip(context, websocket_id))]
  37   async fn perform(
  38     &self,
  39     context: &Data<LemmyContext>,
  40     websocket_id: Option<ConnectionId>,
  41   ) -> Result<BanFromCommunityResponse, LemmyError> {
  42     let data: &BanFromCommunity = self;
  43     let local_user_view = local_user_view_from_jwt(&data.auth, context).await?;
  44
  45     let community_id = data.community_id;
  46     let banned_person_id = data.person_id;
  47     let remove_data = data.remove_data.unwrap_or(false);
  48     let expires = data.expires.map(naive_from_unix);
  49
  50     // Verify that only mods or admins can ban
  51     is_mod_or_admin(context.pool(), local_user_view.person.id, community_id).await?;
  52     is_valid_body_field(&data.reason)?;
  53
  54     let community_user_ban_form = CommunityPersonBanForm {
  55       community_id: data.community_id,
  56       person_id: data.person_id,
  57       expires: Some(expires),
  58     };
  59
  60     if data.ban {
  61       CommunityPersonBan::ban(context.pool(), &community_user_ban_form)
  62         .await
  63         .map_err(|e| LemmyError::from_error_message(e, "community_user_already_banned"))?;
  64
  65       // Also unsubscribe them from the community, if they are subscribed
  66       let community_follower_form = CommunityFollowerForm {
  67         community_id: data.community_id,
  68         person_id: banned_person_id,
  69         pending: false,
  70       };
  71
  72       CommunityFollower::unfollow(context.pool(), &community_follower_form)
  73         .await
  74         .ok();
  75     } else {
  76       CommunityPersonBan::unban(context.pool(), &community_user_ban_form)
  77         .await
  78         .map_err(|e| LemmyError::from_error_message(e, "community_user_already_banned"))?;
  79     }
  80
  81     // Remove/Restore their data if that's desired
  82     if remove_data {
  83       remove_user_data_in_community(community_id, banned_person_id, context.pool()).await?;
  84     }
  85
  86     // Mod tables
  87     let form = ModBanFromCommunityForm {
  88       mod_person_id: local_user_view.person.id,
  89       other_person_id: data.person_id,
  90       community_id: data.community_id,
  91       reason: data.reason.clone(),
  92       banned: Some(data.ban),
  93       expires,
  94     };
  95
  96     ModBanFromCommunity::create(context.pool(), &form).await?;
  97
  98     let person_id = data.person_id;
  99     let person_view = PersonView::read(context.pool(), person_id).await?;
 100
 101     let res = BanFromCommunityResponse {
 102       person_view,
 103       banned: data.ban,
 104     };
 105
 106     // A custom ban message
 107     let message = serialize_websocket_message(&UserOperation::BanFromCommunity, &res)?;
 108     context.chat_server().do_send(SendCommunityRoomMessage {
 109       community_id,
 110       message,
 111       websocket_id,
 112     });
 113
 114     Ok(res)
 115   }
 116 }