lemmy/crates/apub/src/objects/community.rs

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use crate::{
extensions::{context::lemmy_context, group_extensions::GroupExtension},
fetcher::user::get_or_fetch_and_upsert_user,
objects::{
check_object_domain,
create_tombstone,
get_object_from_apub,
get_source_markdown_value,
set_content_and_source,
FromApub,
FromApubToForm,
ToApub,
},
ActorType,
GroupExt,
};
use activitystreams::{
actor::{kind::GroupType, ApActor, Endpoints, Group},
base::BaseExt,
object::{ApObject, Image, Tombstone},
prelude::*,
};
use activitystreams_ext::Ext2;
use anyhow::Context;
use lemmy_db_queries::DbPool;
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use lemmy_db_schema::{
naive_now,
source::community::{Community, CommunityForm},
};
use lemmy_db_views_actor::community_moderator_view::CommunityModeratorView;
use lemmy_structs::blocking;
use lemmy_utils::{
location_info,
utils::{check_slurs, check_slurs_opt, convert_datetime},
LemmyError,
};
use lemmy_websocket::LemmyContext;
use url::Url;
#[async_trait::async_trait(?Send)]
impl ToApub for Community {
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type ApubType = GroupExt;
async fn to_apub(&self, pool: &DbPool) -> Result<GroupExt, LemmyError> {
// The attributed to, is an ordered vector with the creator actor_ids first,
// then the rest of the moderators
// TODO Technically the instance admins can mod the community, but lets
// ignore that for now
let id = self.id;
let moderators = blocking(pool, move |conn| {
CommunityModeratorView::for_community(&conn, id)
})
.await??;
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let moderators: Vec<String> = moderators
.into_iter()
.map(|m| m.moderator.actor_id)
.collect();
let mut group = ApObject::new(Group::new());
group
.set_many_contexts(lemmy_context()?)
.set_id(Url::parse(&self.actor_id)?)
.set_name(self.title.to_owned())
.set_published(convert_datetime(self.published))
.set_many_attributed_tos(moderators);
if let Some(u) = self.updated.to_owned() {
group.set_updated(convert_datetime(u));
}
if let Some(d) = self.description.to_owned() {
set_content_and_source(&mut group, &d)?;
}
if let Some(icon_url) = &self.icon {
let mut image = Image::new();
image.set_url(Url::parse(icon_url)?);
group.set_icon(image.into_any_base()?);
}
if let Some(banner_url) = &self.banner {
let mut image = Image::new();
image.set_url(Url::parse(banner_url)?);
group.set_image(image.into_any_base()?);
}
let mut ap_actor = ApActor::new(self.get_inbox_url()?, group);
ap_actor
.set_preferred_username(self.name.to_owned())
.set_outbox(self.get_outbox_url()?)
.set_followers(self.get_followers_url()?)
.set_endpoints(Endpoints {
shared_inbox: Some(self.get_shared_inbox_url()?),
..Default::default()
});
let nsfw = self.nsfw;
let category_id = self.category_id;
let group_extension = blocking(pool, move |conn| {
GroupExtension::new(conn, category_id, nsfw)
})
.await??;
Ok(Ext2::new(
ap_actor,
group_extension,
self.get_public_key_ext()?,
))
}
fn to_tombstone(&self) -> Result<Tombstone, LemmyError> {
create_tombstone(self.deleted, &self.actor_id, self.updated, GroupType::Group)
}
}
#[async_trait::async_trait(?Send)]
impl FromApub for Community {
type ApubType = GroupExt;
/// Converts a `Group` to `Community`.
async fn from_apub(
group: &GroupExt,
context: &LemmyContext,
expected_domain: Url,
request_counter: &mut i32,
) -> Result<Community, LemmyError> {
get_object_from_apub(group, context, expected_domain, request_counter).await
}
}
#[async_trait::async_trait(?Send)]
impl FromApubToForm<GroupExt> for CommunityForm {
async fn from_apub(
group: &GroupExt,
context: &LemmyContext,
expected_domain: Url,
request_counter: &mut i32,
) -> Result<Self, LemmyError> {
let creator_and_moderator_uris = group.inner.attributed_to().context(location_info!())?;
let creator_uri = creator_and_moderator_uris
.as_many()
.context(location_info!())?
.iter()
.next()
.context(location_info!())?
.as_xsd_any_uri()
.context(location_info!())?;
let creator = get_or_fetch_and_upsert_user(creator_uri, context, request_counter).await?;
let name = group
.inner
.preferred_username()
.context(location_info!())?
.to_string();
let title = group
.inner
.name()
.context(location_info!())?
.as_one()
.context(location_info!())?
.as_xsd_string()
.context(location_info!())?
.to_string();
let description = get_source_markdown_value(group)?;
check_slurs(&name)?;
check_slurs(&title)?;
check_slurs_opt(&description)?;
let icon = match group.icon() {
Some(any_image) => Some(
Image::from_any_base(any_image.as_one().context(location_info!())?.clone())
.context(location_info!())?
.context(location_info!())?
.url()
.context(location_info!())?
.as_single_xsd_any_uri()
.map(|u| u.to_string()),
),
None => None,
};
let banner = match group.image() {
Some(any_image) => Some(
Image::from_any_base(any_image.as_one().context(location_info!())?.clone())
.context(location_info!())?
.context(location_info!())?
.url()
.context(location_info!())?
.as_single_xsd_any_uri()
.map(|u| u.to_string()),
),
None => None,
};
Ok(CommunityForm {
name,
title,
description,
category_id: group.ext_one.category.identifier.parse::<i32>()?,
creator_id: creator.id,
removed: None,
published: group.inner.published().map(|u| u.to_owned().naive_local()),
updated: group.inner.updated().map(|u| u.to_owned().naive_local()),
deleted: None,
nsfw: group.ext_one.sensitive,
actor_id: Some(check_object_domain(group, expected_domain)?),
local: false,
private_key: None,
public_key: Some(group.ext_two.to_owned().public_key.public_key_pem),
last_refreshed_at: Some(naive_now()),
icon,
banner,
})
}
}