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::{
  15     community::Community,
  16     post::{Post, PostUpdateForm},
  17   },
  18   traits::Crud,
  19 };
  20 use lemmy_utils::{error::LemmyError, ConnectionId};
  21 use lemmy_websocket::{send::send_post_ws_message, LemmyContext, UserOperationCrud};
  22
  23 #[async_trait::async_trait(?Send)]
  24 impl PerformCrud for DeletePost {
  25   type Response = PostResponse;
  26
  27   #[tracing::instrument(skip(context, websocket_id))]
  28   async fn perform(
  29     &self,
  30     context: &Data<LemmyContext>,
  31     websocket_id: Option<ConnectionId>,
  32   ) -> Result<PostResponse, LemmyError> {
  33     let data: &DeletePost = self;
  34     let local_user_view =
  35       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  36
  37     let post_id = data.post_id;
  38     let orig_post = blocking(context.pool(), move |conn| Post::read(conn, post_id)).await??;
  39
  40     // Dont delete it if its already been deleted.
  41     if orig_post.deleted == data.deleted {
  42       return Err(LemmyError::from_message("couldnt_update_post"));
  43     }
  44
  45     check_community_ban(
  46       local_user_view.person.id,
  47       orig_post.community_id,
  48       context.pool(),
  49     )
  50     .await?;
  51     check_community_deleted_or_removed(orig_post.community_id, context.pool()).await?;
  52
  53     // Verify that only the creator can delete
  54     if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
  55       return Err(LemmyError::from_message("no_post_edit_allowed"));
  56     }
  57
  58     // Update the post
  59     let post_id = data.post_id;
  60     let deleted = data.deleted;
  61     let updated_post = blocking(context.pool(), move |conn| {
  62       Post::update(
  63         conn,
  64         post_id,
  65         &PostUpdateForm::builder().deleted(Some(deleted)).build(),
  66       )
  67     })
  68     .await??;
  69
  70     let res = send_post_ws_message(
  71       data.post_id,
  72       UserOperationCrud::DeletePost,
  73       websocket_id,
  74       Some(local_user_view.person.id),
  75       context,
  76     )
  77     .await?;
  78
  79     // apub updates
  80     let community = blocking(context.pool(), move |conn| {
  81       Community::read(conn, orig_post.community_id)
  82     })
  83     .await??;
  84     let deletable = DeletableObjects::Post(Box::new(updated_post.into()));
  85     send_apub_delete_in_community(
  86       local_user_view.person,
  87       community,
  88       deletable,
  89       None,
  90       deleted,
  91       context,
  92     )
  93     .await?;
  94     Ok(res)
  95   }
  96 }