crates/api_crud/src/post/list.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   post::{GetPosts, GetPostsResponse},
   5   utils::{
   6     blocking,
   7     check_private_instance,
   8     get_local_user_view_from_jwt_opt,
   9     listing_type_with_site_default,
  10   },
  11 };
  12 use lemmy_apub::{fetcher::resolve_actor_identifier, objects::community::ApubCommunity};
  13 use lemmy_db_schema::{source::community::Community, traits::DeleteableOrRemoveable};
  14 use lemmy_db_views::post_view::PostQuery;
  15 use lemmy_utils::{error::LemmyError, ConnectionId};
  16 use lemmy_websocket::LemmyContext;
  17
  18 #[async_trait::async_trait(?Send)]
  19 impl PerformCrud for GetPosts {
  20   type Response = GetPostsResponse;
  21
  22   #[tracing::instrument(skip(context, _websocket_id))]
  23   async fn perform(
  24     &self,
  25     context: &Data<LemmyContext>,
  26     _websocket_id: Option<ConnectionId>,
  27   ) -> Result<GetPostsResponse, LemmyError> {
  28     let data: &GetPosts = self;
  29     let local_user_view =
  30       get_local_user_view_from_jwt_opt(data.auth.as_ref(), context.pool(), context.secret())
  31         .await?;
  32
  33     check_private_instance(&local_user_view, context.pool()).await?;
  34
  35     let is_logged_in = local_user_view.is_some();
  36
  37     let sort = data.sort;
  38     let listing_type = listing_type_with_site_default(data.type_, context.pool()).await?;
  39
  40     let page = data.page;
  41     let limit = data.limit;
  42     let community_id = data.community_id;
  43     let community_actor_id = if let Some(name) = &data.community_name {
  44       resolve_actor_identifier::<ApubCommunity, Community>(name, context)
  45         .await
  46         .ok()
  47         .map(|c| c.actor_id)
  48     } else {
  49       None
  50     };
  51     let saved_only = data.saved_only;
  52
  53     let mut posts = blocking(context.pool(), move |conn| {
  54       PostQuery::builder()
  55         .conn(conn)
  56         .listing_type(Some(listing_type))
  57         .sort(sort)
  58         .community_id(community_id)
  59         .community_actor_id(community_actor_id)
  60         .saved_only(saved_only)
  61         .page(page)
  62         .limit(limit)
  63         .build()
  64         .list()
  65     })
  66     .await?
  67     .map_err(|e| LemmyError::from_error_message(e, "couldnt_get_posts"))?;
  68
  69     // Blank out deleted or removed info for non-logged in users
  70     if !is_logged_in {
  71       for pv in posts
  72         .iter_mut()
  73         .filter(|p| p.post.deleted || p.post.removed)
  74       {
  75         pv.post = pv.to_owned().post.blank_out_deleted_or_removed_info();
  76       }
  77
  78       for pv in posts
  79         .iter_mut()
  80         .filter(|p| p.community.deleted || p.community.removed)
  81       {
  82         pv.community = pv.to_owned().community.blank_out_deleted_or_removed_info();
  83       }
  84     }
  85
  86     Ok(GetPostsResponse { posts })
  87   }
  88 }