lemmy/crates/apub/src/activities/community/update.rs

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Rust
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use crate::{
activities::{
community::{announce::AnnouncableActivities, send_to_community},
generate_activity_id,
verify_activity,
verify_mod_action,
verify_person_in_community,
},
context::lemmy_context,
fetcher::object_id::ObjectId,
objects::{
community::{ApubCommunity, Group},
person::ApubPerson,
},
};
use activitystreams::{
activity::kind::UpdateType,
base::AnyBase,
primitives::OneOrMany,
unparsed::Unparsed,
};
use lemmy_api_common::blocking;
use lemmy_apub_lib::{
data::Data,
traits::{ActivityFields, ActivityHandler, ActorType, ApubObject},
values::PublicUrl,
};
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use lemmy_db_schema::{
source::community::{Community, CommunityForm},
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traits::Crud,
};
use lemmy_utils::LemmyError;
use lemmy_websocket::{send::send_community_ws_message, LemmyContext, UserOperationCrud};
use serde::{Deserialize, Serialize};
use url::Url;
/// This activity is received from a remote community mod, and updates the description or other
/// fields of a local community.
#[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
#[serde(rename_all = "camelCase")]
pub struct UpdateCommunity {
actor: ObjectId<ApubPerson>,
to: [PublicUrl; 1],
// TODO: would be nice to use a separate struct here, which only contains the fields updated here
object: Group,
cc: [ObjectId<ApubCommunity>; 1],
#[serde(rename = "type")]
kind: UpdateType,
id: Url,
#[serde(rename = "@context")]
context: OneOrMany<AnyBase>,
#[serde(flatten)]
unparsed: Unparsed,
}
impl UpdateCommunity {
pub async fn send(
community: &ApubCommunity,
actor: &ApubPerson,
context: &LemmyContext,
) -> Result<(), LemmyError> {
let id = generate_activity_id(
UpdateType::Update,
&context.settings().get_protocol_and_hostname(),
)?;
let update = UpdateCommunity {
actor: ObjectId::new(actor.actor_id()),
to: [PublicUrl::Public],
object: community.to_apub(context).await?,
cc: [ObjectId::new(community.actor_id())],
kind: UpdateType::Update,
id: id.clone(),
context: lemmy_context(),
unparsed: Default::default(),
};
let activity = AnnouncableActivities::UpdateCommunity(Box::new(update));
send_to_community(activity, &id, actor, community, vec![], context).await
}
}
#[async_trait::async_trait(?Send)]
impl ActivityHandler for UpdateCommunity {
type DataType = LemmyContext;
async fn verify(
&self,
context: &Data<LemmyContext>,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
verify_activity(self, &context.settings())?;
verify_person_in_community(&self.actor, &self.cc[0], context, request_counter).await?;
verify_mod_action(&self.actor, &self.cc[0], context, request_counter).await?;
Ok(())
}
async fn receive(
self,
context: &Data<LemmyContext>,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
let cc = self.cc[0].clone();
let community = cc.dereference(context, request_counter).await?;
let updated_community = Group::from_apub_to_form(
&self.object,
&community.actor_id.clone().into(),
&context.settings(),
)
.await?;
let cf = CommunityForm {
name: updated_community.name,
title: updated_community.title,
description: updated_community.description,
nsfw: updated_community.nsfw,
// TODO: icon and banner would be hosted on the other instance, ideally we would copy it to ours
icon: updated_community.icon,
banner: updated_community.banner,
..CommunityForm::default()
};
let updated_community = blocking(context.pool(), move |conn| {
Community::update(conn, community.id, &cf)
})
.await??;
send_community_ws_message(
updated_community.id,
UserOperationCrud::EditCommunity,
None,
None,
context,
)
.await?;
Ok(())
}
}