crates/api_crud/src/post/delete.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   post::{DeletePost, PostResponse},
   5   utils::{
   6     blocking,
   7     check_community_ban,
   8     check_community_deleted_or_removed,
   9     get_local_user_view_from_jwt,
  10   },
  11 };
  12 use lemmy_apub::activities::deletion::{send_apub_delete_in_community, DeletableObjects};
  13 use lemmy_db_schema::{
  14   source::{community::Community, post::Post},
  15   traits::Crud,
  16 };
  17 use lemmy_utils::{error::LemmyError, ConnectionId};
  18 use lemmy_websocket::{send::send_post_ws_message, LemmyContext, UserOperationCrud};
  19
  20 #[async_trait::async_trait(?Send)]
  21 impl PerformCrud for DeletePost {
  22   type Response = PostResponse;
  23
  24   #[tracing::instrument(skip(context, websocket_id))]
  25   async fn perform(
  26     &self,
  27     context: &Data<LemmyContext>,
  28     websocket_id: Option<ConnectionId>,
  29   ) -> Result<PostResponse, LemmyError> {
  30     let data: &DeletePost = self;
  31     let local_user_view =
  32       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  33
  34     let post_id = data.post_id;
  35     let orig_post = blocking(context.pool(), move |conn| Post::read(conn, post_id)).await??;
  36
  37     // Dont delete it if its already been deleted.
  38     if orig_post.deleted == data.deleted {
  39       return Err(LemmyError::from_message("couldnt_update_post"));
  40     }
  41
  42     check_community_ban(
  43       local_user_view.person.id,
  44       orig_post.community_id,
  45       context.pool(),
  46     )
  47     .await?;
  48     check_community_deleted_or_removed(orig_post.community_id, context.pool()).await?;
  49
  50     // Verify that only the creator can delete
  51     if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
  52       return Err(LemmyError::from_message("no_post_edit_allowed"));
  53     }
  54
  55     // Update the post
  56     let post_id = data.post_id;
  57     let deleted = data.deleted;
  58     let updated_post = blocking(context.pool(), move |conn| {
  59       Post::update_deleted(conn, post_id, deleted)
  60     })
  61     .await??;
  62
  63     let res = send_post_ws_message(
  64       data.post_id,
  65       UserOperationCrud::DeletePost,
  66       websocket_id,
  67       Some(local_user_view.person.id),
  68       context,
  69     )
  70     .await?;
  71
  72     // apub updates
  73     let community = blocking(context.pool(), move |conn| {
  74       Community::read(conn, orig_post.community_id)
  75     })
  76     .await??;
  77     let deletable = DeletableObjects::Post(Box::new(updated_post.into()));
  78     send_apub_delete_in_community(
  79       local_user_view.person,
  80       community,
  81       deletable,
  82       None,
  83       deleted,
  84       context,
  85     )
  86     .await?;
  87     Ok(res)
  88   }
  89 }