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::{
  14   source::{community::Community, local_site::LocalSite},
  15   traits::DeleteableOrRemoveable,
  16 };
  17 use lemmy_db_views::post_view::PostQuery;
  18 use lemmy_utils::{error::LemmyError, ConnectionId};
  19 use lemmy_websocket::LemmyContext;
  20
  21 #[async_trait::async_trait(?Send)]
  22 impl PerformCrud for GetPosts {
  23   type Response = GetPostsResponse;
  24
  25   #[tracing::instrument(skip(context, _websocket_id))]
  26   async fn perform(
  27     &self,
  28     context: &Data<LemmyContext>,
  29     _websocket_id: Option<ConnectionId>,
  30   ) -> Result<GetPostsResponse, LemmyError> {
  31     let data: &GetPosts = self;
  32     let local_user_view =
  33       get_local_user_view_from_jwt_opt(data.auth.as_ref(), context.pool(), context.secret())
  34         .await?;
  35     let local_site = blocking(context.pool(), LocalSite::read).await??;
  36
  37     check_private_instance(&local_user_view, &local_site)?;
  38
  39     let is_logged_in = local_user_view.is_some();
  40
  41     let sort = data.sort;
  42     let listing_type = listing_type_with_site_default(data.type_, &local_site)?;
  43
  44     let page = data.page;
  45     let limit = data.limit;
  46     let community_id = data.community_id;
  47     let community_actor_id = if let Some(name) = &data.community_name {
  48       resolve_actor_identifier::<ApubCommunity, Community>(name, context, true)
  49         .await
  50         .ok()
  51         .map(|c| c.actor_id)
  52     } else {
  53       None
  54     };
  55     let saved_only = data.saved_only;
  56
  57     let mut posts = blocking(context.pool(), move |conn| {
  58       PostQuery::builder()
  59         .conn(conn)
  60         .local_user(local_user_view.map(|l| l.local_user).as_ref())
  61         .listing_type(Some(listing_type))
  62         .sort(sort)
  63         .community_id(community_id)
  64         .community_actor_id(community_actor_id)
  65         .saved_only(saved_only)
  66         .page(page)
  67         .limit(limit)
  68         .build()
  69         .list()
  70     })
  71     .await?
  72     .map_err(|e| LemmyError::from_error_message(e, "couldnt_get_posts"))?;
  73
  74     // Blank out deleted or removed info for non-logged in users
  75     if !is_logged_in {
  76       for pv in posts
  77         .iter_mut()
  78         .filter(|p| p.post.deleted || p.post.removed)
  79       {
  80         pv.post = pv.to_owned().post.blank_out_deleted_or_removed_info();
  81       }
  82
  83       for pv in posts
  84         .iter_mut()
  85         .filter(|p| p.community.deleted || p.community.removed)
  86       {
  87         pv.community = pv.to_owned().community.blank_out_deleted_or_removed_info();
  88       }
  89     }
  90
  91     Ok(GetPostsResponse { posts })
  92   }
  93 }