lemmy/crates/api_crud/src/community/create.rs

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use crate::PerformCrud;
use actix_web::web::Data;
use lemmy_api_common::{
blocking,
community::{CommunityResponse, CreateCommunity},
get_local_user_view_from_jwt,
is_admin,
};
use lemmy_apub::{
generate_followers_url,
generate_inbox_url,
generate_local_apub_endpoint,
generate_shared_inbox_url,
objects::community::ApubCommunity,
EndpointType,
};
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use lemmy_apub_lib::object_id::ObjectId;
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use lemmy_db_schema::{
diesel_option_overwrite_to_url,
source::{
community::{
Community,
CommunityFollower,
CommunityFollowerForm,
CommunityForm,
CommunityModerator,
CommunityModeratorForm,
},
site::Site,
},
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traits::{Crud, Followable, Joinable},
};
use lemmy_db_views_actor::community_view::CommunityView;
use lemmy_utils::{
apub::generate_actor_keypair,
utils::{check_slurs, check_slurs_opt, is_valid_actor_name},
ApiError,
ConnectionId,
LemmyError,
};
use lemmy_websocket::LemmyContext;
#[async_trait::async_trait(?Send)]
impl PerformCrud for CreateCommunity {
type Response = CommunityResponse;
async fn perform(
&self,
context: &Data<LemmyContext>,
_websocket_id: Option<ConnectionId>,
) -> Result<CommunityResponse, LemmyError> {
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let data: &CreateCommunity = self;
let local_user_view =
get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
let site = blocking(context.pool(), move |conn| Site::read(conn, 0)).await??;
if site.community_creation_admin_only && is_admin(&local_user_view).is_err() {
return Err(ApiError::err_plain("only_admins_can_create_communities").into());
}
check_slurs(&data.name, &context.settings().slur_regex())?;
check_slurs(&data.title, &context.settings().slur_regex())?;
check_slurs_opt(&data.description, &context.settings().slur_regex())?;
if !is_valid_actor_name(&data.name, context.settings().actor_name_max_length) {
return Err(ApiError::err_plain("invalid_community_name").into());
}
// Double check for duplicate community actor_ids
let community_actor_id = generate_local_apub_endpoint(
EndpointType::Community,
&data.name,
&context.settings().get_protocol_and_hostname(),
)?;
let community_actor_id_wrapped = ObjectId::<ApubCommunity>::new(community_actor_id.clone());
let community_dupe = community_actor_id_wrapped.dereference_local(context).await;
if community_dupe.is_ok() {
return Err(ApiError::err_plain("community_already_exists").into());
}
// Check to make sure the icon and banners are urls
let icon = diesel_option_overwrite_to_url(&data.icon)?;
let banner = diesel_option_overwrite_to_url(&data.banner)?;
// When you create a community, make sure the user becomes a moderator and a follower
let keypair = generate_actor_keypair()?;
let community_form = CommunityForm {
name: data.name.to_owned(),
title: data.title.to_owned(),
description: data.description.to_owned(),
icon,
banner,
nsfw: data.nsfw,
actor_id: Some(community_actor_id.to_owned()),
private_key: Some(Some(keypair.private_key)),
public_key: keypair.public_key,
followers_url: Some(generate_followers_url(&community_actor_id)?),
inbox_url: Some(generate_inbox_url(&community_actor_id)?),
shared_inbox_url: Some(Some(generate_shared_inbox_url(&community_actor_id)?)),
..CommunityForm::default()
};
let inserted_community = blocking(context.pool(), move |conn| {
Community::create(conn, &community_form)
})
.await?
.map_err(|e| ApiError::err("community_already_exists", e))?;
// The community creator becomes a moderator
let community_moderator_form = CommunityModeratorForm {
community_id: inserted_community.id,
person_id: local_user_view.person.id,
};
let join = move |conn: &'_ _| CommunityModerator::join(conn, &community_moderator_form);
if blocking(context.pool(), join).await?.is_err() {
return Err(ApiError::err_plain("community_moderator_already_exists").into());
}
// Follow your own community
let community_follower_form = CommunityFollowerForm {
community_id: inserted_community.id,
person_id: local_user_view.person.id,
pending: false,
};
let follow = move |conn: &'_ _| CommunityFollower::follow(conn, &community_follower_form);
if blocking(context.pool(), follow).await?.is_err() {
return Err(ApiError::err_plain("community_follower_already_exists").into());
}
let person_id = local_user_view.person.id;
let community_view = blocking(context.pool(), move |conn| {
CommunityView::read(conn, inserted_community.id, Some(person_id))
})
.await??;
Ok(CommunityResponse { community_view })
}
}