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

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use crate::activities::{
community::send_websocket_message,
verify_activity,
verify_mod_action,
verify_person_in_community,
};
use activitystreams::activity::kind::UpdateType;
use lemmy_api_common::blocking;
use lemmy_apub::{objects::FromApubToForm, GroupExt};
use lemmy_apub_lib::{ActivityCommonFields, ActivityHandler, PublicUrl};
use lemmy_db_queries::{ApubObject, Crud};
use lemmy_db_schema::source::community::{Community, CommunityForm};
use lemmy_utils::LemmyError;
use lemmy_websocket::{LemmyContext, UserOperationCrud};
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, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase")]
pub struct UpdateCommunity {
to: PublicUrl,
object: GroupExt,
cc: [Url; 1],
#[serde(rename = "type")]
kind: UpdateType,
#[serde(flatten)]
common: ActivityCommonFields,
}
#[async_trait::async_trait(?Send)]
impl ActivityHandler for UpdateCommunity {
async fn verify(
&self,
context: &LemmyContext,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
verify_activity(self.common())?;
verify_person_in_community(&self.common.actor, &self.cc, context, request_counter).await?;
verify_mod_action(&self.common.actor, self.cc[0].clone(), context).await?;
Ok(())
}
async fn receive(
&self,
context: &LemmyContext,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
let cc = self.cc[0].clone().into();
let community = blocking(context.pool(), move |conn| {
Community::read_from_apub_id(conn, &cc)
})
.await??;
let updated_community = CommunityForm::from_apub(
&self.object,
context,
community.actor_id.clone().into(),
request_counter,
false,
)
.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_websocket_message(
updated_community.id,
UserOperationCrud::EditCommunity,
context,
)
.await
}
fn common(&self) -> &ActivityCommonFields {
&self.common
}
}