lemmy/crates/api/src/site/resolve_object.rs

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2022-04-13 18:12:25 +00:00
use crate::Perform;
use actix_web::web::Data;
use diesel::NotFound;
use lemmy_api_common::{
site::{ResolveObject, ResolveObjectResponse},
utils::{blocking, check_private_instance, get_local_user_view_from_jwt_opt},
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};
use lemmy_apub::fetcher::search::{search_by_apub_id, SearchableObjects};
use lemmy_db_schema::{newtypes::PersonId, utils::DbPool};
use lemmy_db_views::structs::{CommentView, PostView};
use lemmy_db_views_actor::structs::{CommunityView, PersonViewSafe};
use lemmy_utils::{error::LemmyError, ConnectionId};
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use lemmy_websocket::LemmyContext;
#[async_trait::async_trait(?Send)]
impl Perform for ResolveObject {
type Response = ResolveObjectResponse;
#[tracing::instrument(skip(context, _websocket_id))]
async fn perform(
&self,
context: &Data<LemmyContext>,
_websocket_id: Option<ConnectionId>,
) -> Result<ResolveObjectResponse, LemmyError> {
let local_user_view =
get_local_user_view_from_jwt_opt(self.auth.as_ref(), context.pool(), context.secret())
.await?;
check_private_instance(&local_user_view, context.pool()).await?;
let res = search_by_apub_id(&self.q, context)
.await
.map_err(|e| e.with_message("couldnt_find_object"))?;
convert_response(res, local_user_view.map(|l| l.person.id), context.pool())
.await
.map_err(|e| e.with_message("couldnt_find_object"))
}
}
async fn convert_response(
object: SearchableObjects,
user_id: Option<PersonId>,
pool: &DbPool,
) -> Result<ResolveObjectResponse, LemmyError> {
let removed_or_deleted;
let mut res = ResolveObjectResponse {
comment: None,
post: None,
community: None,
person: None,
};
use SearchableObjects::*;
match object {
Person(p) => {
removed_or_deleted = p.deleted;
res.person = Some(blocking(pool, move |conn| PersonViewSafe::read(conn, p.id)).await??)
}
Community(c) => {
removed_or_deleted = c.deleted || c.removed;
res.community =
Some(blocking(pool, move |conn| CommunityView::read(conn, c.id, user_id)).await??)
}
Post(p) => {
removed_or_deleted = p.deleted || p.removed;
res.post = Some(blocking(pool, move |conn| PostView::read(conn, p.id, user_id)).await??)
}
Comment(c) => {
removed_or_deleted = c.deleted || c.removed;
res.comment = Some(blocking(pool, move |conn| CommentView::read(conn, c.id, user_id)).await??)
}
};
// if the object was deleted from database, dont return it
if removed_or_deleted {
return Err(NotFound {}.into());
}
Ok(res)
}