crates/api_crud/src/post/read.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   blocking,
   5   check_private_instance,
   6   get_local_user_view_from_jwt_opt,
   7   mark_post_as_read,
   8   post::{GetPost, GetPostResponse},
   9 };
  10 use lemmy_db_schema::traits::DeleteableOrRemoveable;
  11 use lemmy_db_views::{comment_view::CommentQueryBuilder, post_view::PostView};
  12 use lemmy_db_views_actor::{
  13   community_moderator_view::CommunityModeratorView,
  14   community_view::CommunityView,
  15 };
  16 use lemmy_utils::{ConnectionId, LemmyError};
  17 use lemmy_websocket::{messages::GetPostUsersOnline, LemmyContext};
  18
  19 #[async_trait::async_trait(?Send)]
  20 impl PerformCrud for GetPost {
  21   type Response = GetPostResponse;
  22
  23   #[tracing::instrument(skip(context, _websocket_id))]
  24   async fn perform(
  25     &self,
  26     context: &Data<LemmyContext>,
  27     _websocket_id: Option<ConnectionId>,
  28   ) -> Result<GetPostResponse, LemmyError> {
  29     let data: &GetPost = self;
  30     let local_user_view =
  31       get_local_user_view_from_jwt_opt(data.auth.as_ref(), context.pool(), context.secret())
  32         .await?;
  33
  34     check_private_instance(&local_user_view, context.pool()).await?;
  35
  36     let show_bot_accounts = local_user_view
  37       .as_ref()
  38       .map(|t| t.local_user.show_bot_accounts);
  39     let person_id = local_user_view.map(|u| u.person.id);
  40
  41     let id = data.id;
  42     let mut post_view = blocking(context.pool(), move |conn| {
  43       PostView::read(conn, id, person_id)
  44     })
  45     .await?
  46     .map_err(|e| LemmyError::from_error_message(e, "couldnt_find_post"))?;
  47
  48     // Mark the post as read
  49     if let Some(person_id) = person_id {
  50       mark_post_as_read(person_id, id, context.pool()).await?;
  51     }
  52
  53     let id = data.id;
  54     let mut comments = blocking(context.pool(), move |conn| {
  55       CommentQueryBuilder::create(conn)
  56         .my_person_id(person_id)
  57         .show_bot_accounts(show_bot_accounts)
  58         .post_id(id)
  59         .limit(9999)
  60         .list()
  61     })
  62     .await??;
  63
  64     // Necessary for the sidebar
  65     let community_id = post_view.community.id;
  66     let mut community_view = blocking(context.pool(), move |conn| {
  67       CommunityView::read(conn, community_id, person_id)
  68     })
  69     .await?
  70     .map_err(|e| LemmyError::from_error_message(e, "couldnt_find_community"))?;
  71
  72     // Blank out deleted or removed info for non-logged in users
  73     if person_id.is_none() {
  74       if post_view.post.deleted || post_view.post.removed {
  75         post_view.post = post_view.post.blank_out_deleted_or_removed_info();
  76       }
  77
  78       for cv in comments
  79         .iter_mut()
  80         .filter(|cv| cv.comment.deleted || cv.comment.removed)
  81       {
  82         cv.comment = cv.to_owned().comment.blank_out_deleted_or_removed_info();
  83       }
  84       if community_view.community.deleted || community_view.community.removed {
  85         community_view.community = community_view.community.blank_out_deleted_or_removed_info();
  86       }
  87     }
  88
  89     let moderators = blocking(context.pool(), move |conn| {
  90       CommunityModeratorView::for_community(conn, community_id)
  91     })
  92     .await??;
  93
  94     let online = context
  95       .chat_server()
  96       .send(GetPostUsersOnline { post_id: data.id })
  97       .await
  98       .unwrap_or(1);
  99
 100     // Return the jwt
 101     Ok(GetPostResponse {
 102       post_view,
 103       community_view,
 104       comments,
 105       moderators,
 106       online,
 107     })
 108   }
 109 }