lemmy/crates/apub/src/protocol/objects/note.rs
Dessalines d075acce43
Make all single-fetch database calls return an Option. (#4617)
- Diesel ordinarily throws an error when no results are returned for a
  single fetch, which is a bit confusing. This PR ensures that the
  missing value cases are all caught, and wrapped with new LemmyErrors,
  rather than diesel errors.
- Fixes #4601
2024-04-16 14:48:15 +02:00

89 lines
2.9 KiB
Rust

use crate::{
activities::verify_community_matches,
fetcher::post_or_comment::PostOrComment,
mentions::MentionOrValue,
objects::{comment::ApubComment, community::ApubCommunity, person::ApubPerson, post::ApubPost},
protocol::{objects::LanguageTag, InCommunity, Source},
};
use activitypub_federation::{
config::Data,
fetch::object_id::ObjectId,
kinds::object::NoteType,
protocol::{
helpers::{deserialize_one_or_many, deserialize_skip_error},
values::MediaTypeMarkdownOrHtml,
},
};
use chrono::{DateTime, Utc};
use lemmy_api_common::context::LemmyContext;
use lemmy_db_schema::{
source::{community::Community, post::Post},
traits::Crud,
};
use lemmy_utils::{error::LemmyResult, LemmyErrorType};
use serde::{Deserialize, Serialize};
use serde_with::skip_serializing_none;
use std::ops::Deref;
use url::Url;
#[skip_serializing_none]
#[derive(Clone, Debug, Deserialize, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct Note {
pub(crate) r#type: NoteType,
pub(crate) id: ObjectId<ApubComment>,
pub(crate) attributed_to: ObjectId<ApubPerson>,
#[serde(deserialize_with = "deserialize_one_or_many")]
pub(crate) to: Vec<Url>,
#[serde(deserialize_with = "deserialize_one_or_many", default)]
pub(crate) cc: Vec<Url>,
pub(crate) content: String,
pub(crate) in_reply_to: ObjectId<PostOrComment>,
pub(crate) media_type: Option<MediaTypeMarkdownOrHtml>,
#[serde(deserialize_with = "deserialize_skip_error", default)]
pub(crate) source: Option<Source>,
pub(crate) published: Option<DateTime<Utc>>,
pub(crate) updated: Option<DateTime<Utc>>,
#[serde(default)]
pub(crate) tag: Vec<MentionOrValue>,
// lemmy extension
pub(crate) distinguished: Option<bool>,
pub(crate) language: Option<LanguageTag>,
pub(crate) audience: Option<ObjectId<ApubCommunity>>,
}
impl Note {
pub(crate) async fn get_parents(
&self,
context: &Data<LemmyContext>,
) -> LemmyResult<(ApubPost, Option<ApubComment>)> {
// Fetch parent comment chain in a box, otherwise it can cause a stack overflow.
let parent = Box::pin(self.in_reply_to.dereference(context).await?);
match parent.deref() {
PostOrComment::Post(p) => Ok((p.clone(), None)),
PostOrComment::Comment(c) => {
let post_id = c.post_id;
let post = Post::read(&mut context.pool(), post_id)
.await?
.ok_or(LemmyErrorType::CouldntFindPost)?;
Ok((post.into(), Some(c.clone())))
}
}
}
}
#[async_trait::async_trait]
impl InCommunity for Note {
async fn community(&self, context: &Data<LemmyContext>) -> LemmyResult<ApubCommunity> {
let (post, _) = self.get_parents(context).await?;
let community = Community::read(&mut context.pool(), post.community_id)
.await?
.ok_or(LemmyErrorType::CouldntFindCommunity)?;
if let Some(audience) = &self.audience {
verify_community_matches(audience, community.actor_id.clone())?;
}
Ok(community.into())
}
}