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

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use crate::{
activities::{
community::{announce::AnnouncableActivities, send_to_community},
generate_activity_id,
verify_activity,
verify_add_remove_moderator_target,
verify_mod_action,
verify_person_in_community,
},
context::lemmy_context,
fetcher::object_id::ObjectId,
generate_moderators_url,
objects::{community::ApubCommunity, person::ApubPerson},
};
use activitystreams::{
activity::kind::RemoveType,
base::AnyBase,
primitives::OneOrMany,
unparsed::Unparsed,
};
use lemmy_api_common::blocking;
use lemmy_apub_lib::{
data::Data,
traits::{ActivityFields, ActivityHandler, ActorType},
values::PublicUrl,
};
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use lemmy_db_schema::{
source::community::{CommunityModerator, CommunityModeratorForm},
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traits::Joinable,
};
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<ApubPerson>,
to: [PublicUrl; 1],
pub(in crate::activities) object: ObjectId<ApubPerson>,
cc: [ObjectId<ApubCommunity>; 1],
#[serde(rename = "type")]
kind: RemoveType,
// if target is set, this is means remove mod from community
pub(in crate::activities) target: Url,
id: Url,
#[serde(rename = "@context")]
context: OneOrMany<AnyBase>,
#[serde(flatten)]
unparsed: Unparsed,
}
impl RemoveMod {
pub async fn send(
community: &ApubCommunity,
removed_mod: &ApubPerson,
actor: &ApubPerson,
context: &LemmyContext,
) -> Result<(), LemmyError> {
let id = generate_activity_id(
RemoveType::Remove,
&context.settings().get_protocol_and_hostname(),
)?;
let remove = RemoveMod {
actor: ObjectId::new(actor.actor_id()),
to: [PublicUrl::Public],
object: ObjectId::new(removed_mod.actor_id()),
target: 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.shared_inbox_or_inbox_url()];
send_to_community(activity, &id, actor, community, inboxes, context).await
}
}
#[async_trait::async_trait(?Send)]
impl ActivityHandler for RemoveMod {
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?;
verify_add_remove_moderator_target(&self.target, &self.cc[0])?;
Ok(())
}
async fn receive(
self,
context: &Data<LemmyContext>,
request_counter: &mut i32,
) -> Result<(), LemmyError> {
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(())
}
}