crates/api_crud/src/community/read.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{blocking, community::*, get_local_user_view_from_jwt_opt};
   4 use lemmy_apub::{
   5   fetcher::webfinger::webfinger_resolve,
   6   objects::community::ApubCommunity,
   7   EndpointType,
   8 };
   9 use lemmy_apub_lib::object_id::ObjectId;
  10 use lemmy_db_schema::{
  11   from_opt_str_to_opt_enum,
  12   traits::DeleteableOrRemoveable,
  13   ListingType,
  14   SortType,
  15 };
  16 use lemmy_db_views_actor::{
  17   community_moderator_view::CommunityModeratorView,
  18   community_view::{CommunityQueryBuilder, CommunityView},
  19 };
  20 use lemmy_utils::{ConnectionId, LemmyError};
  21 use lemmy_websocket::{messages::GetCommunityUsersOnline, LemmyContext};
  22
  23 #[async_trait::async_trait(?Send)]
  24 impl PerformCrud for GetCommunity {
  25   type Response = GetCommunityResponse;
  26
  27   #[tracing::instrument(skip(context, _websocket_id))]
  28   async fn perform(
  29     &self,
  30     context: &Data<LemmyContext>,
  31     _websocket_id: Option<ConnectionId>,
  32   ) -> Result<GetCommunityResponse, LemmyError> {
  33     let data: &GetCommunity = self;
  34     let local_user_view =
  35       get_local_user_view_from_jwt_opt(data.auth.as_ref(), context.pool(), context.secret())
  36         .await?;
  37     let person_id = local_user_view.map(|u| u.person.id);
  38
  39     let community_id = match data.id {
  40       Some(id) => id,
  41       None => {
  42         let name = data.name.to_owned().unwrap_or_else(|| "main".to_string());
  43         let community_actor_id =
  44           webfinger_resolve::<ApubCommunity>(&name, EndpointType::Community, context, &mut 0)
  45             .await?;
  46
  47         ObjectId::<ApubCommunity>::new(community_actor_id)
  48           .dereference(context, context.client(), &mut 0)
  49           .await
  50           .map_err(LemmyError::from)
  51           .map_err(|e| e.with_message("couldnt_find_community"))?
  52           .id
  53       }
  54     };
  55
  56     let mut community_view = blocking(context.pool(), move |conn| {
  57       CommunityView::read(conn, community_id, person_id)
  58     })
  59     .await?
  60     .map_err(LemmyError::from)
  61     .map_err(|e| e.with_message("couldnt_find_community"))?;
  62
  63     // Blank out deleted or removed info for non-logged in users
  64     if person_id.is_none() && (community_view.community.deleted || community_view.community.removed)
  65     {
  66       community_view.community = community_view.community.blank_out_deleted_or_removed_info();
  67     }
  68
  69     let moderators: Vec<CommunityModeratorView> = blocking(context.pool(), move |conn| {
  70       CommunityModeratorView::for_community(conn, community_id)
  71     })
  72     .await?
  73     .map_err(LemmyError::from)
  74     .map_err(|e| e.with_message("couldnt_find_community"))?;
  75
  76     let online = context
  77       .chat_server()
  78       .send(GetCommunityUsersOnline { community_id })
  79       .await
  80       .unwrap_or(1);
  81
  82     let res = GetCommunityResponse {
  83       community_view,
  84       moderators,
  85       online,
  86     };
  87
  88     // Return the jwt
  89     Ok(res)
  90   }
  91 }
  92
  93 #[async_trait::async_trait(?Send)]
  94 impl PerformCrud for ListCommunities {
  95   type Response = ListCommunitiesResponse;
  96
  97   #[tracing::instrument(skip(context, _websocket_id))]
  98   async fn perform(
  99     &self,
 100     context: &Data<LemmyContext>,
 101     _websocket_id: Option<ConnectionId>,
 102   ) -> Result<ListCommunitiesResponse, LemmyError> {
 103     let data: &ListCommunities = self;
 104     let local_user_view =
 105       get_local_user_view_from_jwt_opt(data.auth.as_ref(), context.pool(), context.secret())
 106         .await?;
 107
 108     let person_id = local_user_view.to_owned().map(|l| l.person.id);
 109
 110     // Don't show NSFW by default
 111     let show_nsfw = match &local_user_view {
 112       Some(uv) => uv.local_user.show_nsfw,
 113       None => false,
 114     };
 115
 116     let sort: Option<SortType> = from_opt_str_to_opt_enum(&data.sort);
 117     let listing_type: Option<ListingType> = from_opt_str_to_opt_enum(&data.type_);
 118
 119     let page = data.page;
 120     let limit = data.limit;
 121     let mut communities = blocking(context.pool(), move |conn| {
 122       CommunityQueryBuilder::create(conn)
 123         .listing_type(listing_type)
 124         .sort(sort)
 125         .show_nsfw(show_nsfw)
 126         .my_person_id(person_id)
 127         .page(page)
 128         .limit(limit)
 129         .list()
 130     })
 131     .await??;
 132
 133     // Blank out deleted or removed info for non-logged in users
 134     if person_id.is_none() {
 135       for cv in communities
 136         .iter_mut()
 137         .filter(|cv| cv.community.deleted || cv.community.removed)
 138       {
 139         cv.community = cv.to_owned().community.blank_out_deleted_or_removed_info();
 140       }
 141     }
 142
 143     // Return the jwt
 144     Ok(ListCommunitiesResponse { communities })
 145   }
 146 }