crates/api_crud/src/community/read.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   blocking,
   5   check_private_instance,
   6   community::*,
   7   get_local_user_view_from_jwt_opt,
   8   resolve_actor_identifier,
   9 };
  10 use lemmy_db_schema::{
  11   from_opt_str_to_opt_enum,
  12   source::community::Community,
  13   traits::DeleteableOrRemoveable,
  14   ListingType,
  15   SortType,
  16 };
  17 use lemmy_db_views_actor::{
  18   community_moderator_view::CommunityModeratorView,
  19   community_view::{CommunityQueryBuilder, CommunityView},
  20 };
  21 use lemmy_utils::{ConnectionId, LemmyError};
  22 use lemmy_websocket::{messages::GetCommunityUsersOnline, LemmyContext};
  23
  24 #[async_trait::async_trait(?Send)]
  25 impl PerformCrud for GetCommunity {
  26   type Response = GetCommunityResponse;
  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<GetCommunityResponse, LemmyError> {
  34     let data: &GetCommunity = self;
  35     let local_user_view =
  36       get_local_user_view_from_jwt_opt(data.auth.as_ref(), context.pool(), context.secret())
  37         .await?;
  38
  39     check_private_instance(&local_user_view, context.pool()).await?;
  40
  41     let person_id = local_user_view.map(|u| u.person.id);
  42
  43     let community_id = match data.id {
  44       Some(id) => id,
  45       None => {
  46         let name = data.name.to_owned().unwrap_or_else(|| "main".to_string());
  47         resolve_actor_identifier::<Community>(&name, context.pool())
  48           .await
  49           .map_err(LemmyError::from)
  50           .map_err(|e| e.with_message("couldnt_find_community"))?
  51           .id
  52       }
  53     };
  54
  55     let mut community_view = blocking(context.pool(), move |conn| {
  56       CommunityView::read(conn, community_id, person_id)
  57     })
  58     .await?
  59     .map_err(LemmyError::from)
  60     .map_err(|e| e.with_message("couldnt_find_community"))?;
  61
  62     // Blank out deleted or removed info for non-logged in users
  63     if person_id.is_none() && (community_view.community.deleted || community_view.community.removed)
  64     {
  65       community_view.community = community_view.community.blank_out_deleted_or_removed_info();
  66     }
  67
  68     let moderators: Vec<CommunityModeratorView> = blocking(context.pool(), move |conn| {
  69       CommunityModeratorView::for_community(conn, community_id)
  70     })
  71     .await?
  72     .map_err(LemmyError::from)
  73     .map_err(|e| e.with_message("couldnt_find_community"))?;
  74
  75     let online = context
  76       .chat_server()
  77       .send(GetCommunityUsersOnline { community_id })
  78       .await
  79       .unwrap_or(1);
  80
  81     let res = GetCommunityResponse {
  82       community_view,
  83       moderators,
  84       online,
  85     };
  86
  87     // Return the jwt
  88     Ok(res)
  89   }
  90 }
  91
  92 #[async_trait::async_trait(?Send)]
  93 impl PerformCrud for ListCommunities {
  94   type Response = ListCommunitiesResponse;
  95
  96   #[tracing::instrument(skip(context, _websocket_id))]
  97   async fn perform(
  98     &self,
  99     context: &Data<LemmyContext>,
 100     _websocket_id: Option<ConnectionId>,
 101   ) -> Result<ListCommunitiesResponse, LemmyError> {
 102     let data: &ListCommunities = self;
 103     let local_user_view =
 104       get_local_user_view_from_jwt_opt(data.auth.as_ref(), context.pool(), context.secret())
 105         .await?;
 106
 107     check_private_instance(&local_user_view, context.pool()).await?;
 108
 109     let person_id = local_user_view.to_owned().map(|l| l.person.id);
 110
 111     // Don't show NSFW by default
 112     let show_nsfw = match &local_user_view {
 113       Some(uv) => uv.local_user.show_nsfw,
 114       None => false,
 115     };
 116
 117     let sort: Option<SortType> = from_opt_str_to_opt_enum(&data.sort);
 118     let listing_type: Option<ListingType> = from_opt_str_to_opt_enum(&data.type_);
 119
 120     let page = data.page;
 121     let limit = data.limit;
 122     let mut communities = blocking(context.pool(), move |conn| {
 123       CommunityQueryBuilder::create(conn)
 124         .listing_type(listing_type)
 125         .sort(sort)
 126         .show_nsfw(show_nsfw)
 127         .my_person_id(person_id)
 128         .page(page)
 129         .limit(limit)
 130         .list()
 131     })
 132     .await??;
 133
 134     // Blank out deleted or removed info for non-logged in users
 135     if person_id.is_none() {
 136       for cv in communities
 137         .iter_mut()
 138         .filter(|cv| cv.community.deleted || cv.community.removed)
 139       {
 140         cv.community = cv.to_owned().community.blank_out_deleted_or_removed_info();
 141       }
 142     }
 143
 144     // Return the jwt
 145     Ok(ListCommunitiesResponse { communities })
 146   }
 147 }