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

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use crate::{
activities::{
community::announce::AnnouncableActivities,
deletion::{delete::receive_remove_action, verify_delete_activity},
generate_activity_id,
verify_activity,
verify_add_remove_moderator_target,
verify_mod_action,
verify_person_in_community,
},
activity_queue::send_to_community_new,
extensions::context::lemmy_context,
fetcher::object_id::ObjectId,
generate_moderators_url,
ActorType,
};
use activitystreams::{
activity::kind::RemoveType,
base::AnyBase,
primitives::OneOrMany,
unparsed::Unparsed,
};
use lemmy_api_common::blocking;
use lemmy_apub_lib::{values::PublicUrl, ActivityFields, ActivityHandler};
use lemmy_db_queries::Joinable;
use lemmy_db_schema::source::{
community::{Community, CommunityModerator, CommunityModeratorForm},
person::Person,
};
use lemmy_utils::LemmyError;
use lemmy_websocket::LemmyContext;
use serde::{Deserialize, Serialize};
use url::Url;
#[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
#[serde(rename_all = "camelCase")]
pub struct RemoveMod {
actor: ObjectId<Person>,
to: [PublicUrl; 1],
pub(in crate::activities) object: ObjectId<Person>,
cc: [ObjectId<Community>; 1],
#[serde(rename = "type")]
kind: RemoveType,
// if target is set, this is means remove mod from community
pub(in crate::activities) target: Option<Url>,
id: Url,
#[serde(rename = "@context")]
context: OneOrMany<AnyBase>,
#[serde(flatten)]
unparsed: Unparsed,
}
impl RemoveMod {
pub async fn send(
community: &Community,
removed_mod: &Person,
actor: &Person,
context: &LemmyContext,
) -> Result<(), LemmyError> {
let id = generate_activity_id(RemoveType::Remove)?;
let remove = RemoveMod {
actor: ObjectId::new(actor.actor_id()),
to: [PublicUrl::Public],
object: ObjectId::new(removed_mod.actor_id()),
target: Some(generate_moderators_url(&community.actor_id)?.into()),
id: id.clone(),
context: lemmy_context(),
cc: [ObjectId::new(community.actor_id())],
kind: RemoveType::Remove,
unparsed: Default::default(),
};
let activity = AnnouncableActivities::RemoveMod(remove);
let inboxes = vec![removed_mod.get_shared_inbox_or_inbox_url()];
send_to_community_new(activity, &id, actor, community, inboxes, context).await
}
}
#[async_trait::async_trait(?Send)]
impl ActivityHandler for RemoveMod {
async fn verify(
&self,
context: &LemmyContext,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
verify_activity(self)?;
if let Some(target) = &self.target {
verify_person_in_community(&self.actor, &self.cc[0], context, request_counter).await?;
verify_mod_action(&self.actor, self.cc[0].clone(), context).await?;
verify_add_remove_moderator_target(target, &self.cc[0])?;
} else {
verify_delete_activity(
self.object.inner(),
self,
&self.cc[0],
true,
context,
request_counter,
)
.await?;
}
Ok(())
}
async fn receive(
self,
context: &LemmyContext,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
if self.target.is_some() {
let community = self.cc[0].dereference(context, request_counter).await?;
let remove_mod = self.object.dereference(context, request_counter).await?;
let form = CommunityModeratorForm {
community_id: community.id,
person_id: remove_mod.id,
};
blocking(context.pool(), move |conn| {
CommunityModerator::leave(conn, &form)
})
.await??;
// TODO: send websocket notification about removed mod
Ok(())
} else {
receive_remove_action(
&self.actor,
self.object.inner(),
None,
context,
request_counter,
)
.await
}
}
}