crates/api_crud/src/comment/delete.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   comment::{CommentResponse, DeleteComment},
   5   utils::{blocking, check_community_ban, get_local_user_view_from_jwt},
   6 };
   7 use lemmy_apub::activities::deletion::{send_apub_delete_in_community, DeletableObjects};
   8 use lemmy_db_schema::{
   9   source::{
  10     comment::{Comment, CommentUpdateForm},
  11     community::Community,
  12     post::Post,
  13   },
  14   traits::Crud,
  15 };
  16 use lemmy_db_views::structs::CommentView;
  17 use lemmy_utils::{error::LemmyError, ConnectionId};
  18 use lemmy_websocket::{
  19   send::{send_comment_ws_message, send_local_notifs},
  20   LemmyContext,
  21   UserOperationCrud,
  22 };
  23
  24 #[async_trait::async_trait(?Send)]
  25 impl PerformCrud for DeleteComment {
  26   type Response = CommentResponse;
  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<CommentResponse, LemmyError> {
  34     let data: &DeleteComment = self;
  35     let local_user_view =
  36       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  37
  38     let comment_id = data.comment_id;
  39     let orig_comment = blocking(context.pool(), move |conn| {
  40       CommentView::read(conn, comment_id, None)
  41     })
  42     .await??;
  43
  44     // Dont delete it if its already been deleted.
  45     if orig_comment.comment.deleted == data.deleted {
  46       return Err(LemmyError::from_message("couldnt_update_comment"));
  47     }
  48
  49     check_community_ban(
  50       local_user_view.person.id,
  51       orig_comment.community.id,
  52       context.pool(),
  53     )
  54     .await?;
  55
  56     // Verify that only the creator can delete
  57     if local_user_view.person.id != orig_comment.creator.id {
  58       return Err(LemmyError::from_message("no_comment_edit_allowed"));
  59     }
  60
  61     // Do the delete
  62     let deleted = data.deleted;
  63     let updated_comment = blocking(context.pool(), move |conn| {
  64       Comment::update(
  65         conn,
  66         comment_id,
  67         &CommentUpdateForm::builder().deleted(Some(deleted)).build(),
  68       )
  69     })
  70     .await?
  71     .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_comment"))?;
  72
  73     let post_id = updated_comment.post_id;
  74     let post = blocking(context.pool(), move |conn| Post::read(conn, post_id)).await??;
  75     let recipient_ids = send_local_notifs(
  76       vec![],
  77       &updated_comment,
  78       &local_user_view.person,
  79       &post,
  80       false,
  81       context,
  82     )
  83     .await?;
  84
  85     let res = send_comment_ws_message(
  86       data.comment_id,
  87       UserOperationCrud::DeleteComment,
  88       websocket_id,
  89       None, // TODO a comment delete might clear forms?
  90       Some(local_user_view.person.id),
  91       recipient_ids,
  92       context,
  93     )
  94     .await?;
  95
  96     // Send the apub message
  97     let community = blocking(context.pool(), move |conn| {
  98       Community::read(conn, orig_comment.post.community_id)
  99     })
 100     .await??;
 101     let deletable = DeletableObjects::Comment(Box::new(updated_comment.clone().into()));
 102     send_apub_delete_in_community(
 103       local_user_view.person,
 104       community,
 105       deletable,
 106       None,
 107       deleted,
 108       context,
 109     )
 110     .await?;
 111
 112     Ok(res)
 113   }
 114 }