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