mirror of https://github.com/LemmyNet/lemmy.git
116 lines
3.3 KiB
Rust
116 lines
3.3 KiB
Rust
use activitystreams::collection::kind::OrderedCollectionType;
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use chrono::NaiveDateTime;
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use url::Url;
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use lemmy_api_common::blocking;
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use lemmy_apub_lib::{
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data::Data,
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traits::{ActivityHandler, ApubObject},
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verify::verify_domains_match,
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};
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use lemmy_db_schema::{
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source::{person::Person, post::Post},
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traits::Crud,
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};
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use lemmy_utils::LemmyError;
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use crate::{
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collections::CommunityContext,
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generate_outbox_url,
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objects::{person::ApubPerson, post::ApubPost},
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protocol::{
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activities::{create_or_update::post::CreateOrUpdatePost, CreateOrUpdateType},
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collections::group_outbox::GroupOutbox,
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},
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};
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#[derive(Clone, Debug)]
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pub(crate) struct ApubCommunityOutbox(Vec<ApubPost>);
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#[async_trait::async_trait(?Send)]
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impl ApubObject for ApubCommunityOutbox {
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type DataType = CommunityContext;
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type TombstoneType = ();
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type ApubType = GroupOutbox;
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fn last_refreshed_at(&self) -> Option<NaiveDateTime> {
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None
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}
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async fn read_from_apub_id(
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_object_id: Url,
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data: &Self::DataType,
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) -> Result<Option<Self>, LemmyError> {
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// Only read from database if its a local community, otherwise fetch over http
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if data.0.local {
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let community_id = data.0.id;
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let post_list: Vec<ApubPost> = blocking(data.1.pool(), move |conn| {
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Post::list_for_community(conn, community_id)
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})
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.await??
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.into_iter()
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.map(Into::into)
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.collect();
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Ok(Some(ApubCommunityOutbox(post_list)))
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} else {
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Ok(None)
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}
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}
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async fn delete(self, _data: &Self::DataType) -> Result<(), LemmyError> {
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// do nothing (it gets deleted automatically with the community)
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Ok(())
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}
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async fn to_apub(&self, data: &Self::DataType) -> Result<Self::ApubType, LemmyError> {
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let mut ordered_items = vec![];
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for post in &self.0 {
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let actor = post.creator_id;
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let actor: ApubPerson = blocking(data.1.pool(), move |conn| Person::read(conn, actor))
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.await??
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.into();
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let a =
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CreateOrUpdatePost::new(post, &actor, &data.0, CreateOrUpdateType::Create, &data.1).await?;
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ordered_items.push(a);
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}
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Ok(GroupOutbox {
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r#type: OrderedCollectionType::OrderedCollection,
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id: generate_outbox_url(&data.0.actor_id)?.into(),
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total_items: ordered_items.len() as i32,
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ordered_items,
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})
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}
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fn to_tombstone(&self) -> Result<Self::TombstoneType, LemmyError> {
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// no tombstone for this, there is only a tombstone for the community
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unimplemented!()
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}
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async fn from_apub(
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apub: &Self::ApubType,
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data: &Self::DataType,
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expected_domain: &Url,
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request_counter: &mut i32,
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) -> Result<Self, LemmyError> {
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verify_domains_match(expected_domain, &apub.id)?;
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let mut outbox_activities = apub.ordered_items.clone();
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if outbox_activities.len() > 20 {
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outbox_activities = outbox_activities[0..20].to_vec();
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}
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// We intentionally ignore errors here. This is because the outbox might contain posts from old
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// Lemmy versions, or from other software which we cant parse. In that case, we simply skip the
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// item and only parse the ones that work.
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for activity in outbox_activities {
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activity
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.receive(&Data::new(data.1.clone()), request_counter)
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.await
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.ok();
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}
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// This return value is unused, so just set an empty vec
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Ok(ApubCommunityOutbox { 0: vec![] })
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}
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}
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