1 use crate::PerformCrud;
2 use activitypub_federation::core::{object_id::ObjectId, signatures::generate_actor_keypair};
3 use actix_web::web::Data;
4 use lemmy_api_common::{
5 community::{CommunityResponse, CreateCommunity},
6 utils::{blocking, get_local_user_view_from_jwt, is_admin},
9 generate_followers_url,
11 generate_local_apub_endpoint,
12 generate_shared_inbox_url,
13 objects::community::ApubCommunity,
16 use lemmy_db_schema::{
21 CommunityFollowerForm,
24 CommunityModeratorForm,
28 traits::{Crud, Followable, Joinable},
29 utils::{diesel_option_overwrite, diesel_option_overwrite_to_url},
31 use lemmy_db_views_actor::structs::CommunityView;
34 utils::{check_slurs, check_slurs_opt, is_valid_actor_name},
37 use lemmy_websocket::LemmyContext;
39 #[async_trait::async_trait(?Send)]
40 impl PerformCrud for CreateCommunity {
41 type Response = CommunityResponse;
43 #[tracing::instrument(skip(context, _websocket_id))]
46 context: &Data<LemmyContext>,
47 _websocket_id: Option<ConnectionId>,
48 ) -> Result<CommunityResponse, LemmyError> {
49 let data: &CreateCommunity = self;
51 get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
53 let site = blocking(context.pool(), Site::read_local_site).await??;
54 if site.community_creation_admin_only && is_admin(&local_user_view).is_err() {
55 return Err(LemmyError::from_message(
56 "only_admins_can_create_communities",
60 // Check to make sure the icon and banners are urls
61 let icon = diesel_option_overwrite_to_url(&data.icon)?;
62 let banner = diesel_option_overwrite_to_url(&data.banner)?;
63 let description = diesel_option_overwrite(&data.description);
65 check_slurs(&data.name, &context.settings().slur_regex())?;
66 check_slurs(&data.title, &context.settings().slur_regex())?;
67 check_slurs_opt(&data.description, &context.settings().slur_regex())?;
69 if !is_valid_actor_name(&data.name, context.settings().actor_name_max_length) {
70 return Err(LemmyError::from_message("invalid_community_name"));
73 // Double check for duplicate community actor_ids
74 let community_actor_id = generate_local_apub_endpoint(
75 EndpointType::Community,
77 &context.settings().get_protocol_and_hostname(),
79 let community_actor_id_wrapped = ObjectId::<ApubCommunity>::new(community_actor_id.clone());
80 let community_dupe = community_actor_id_wrapped.dereference_local(context).await;
81 if community_dupe.is_ok() {
82 return Err(LemmyError::from_message("community_already_exists"));
85 // When you create a community, make sure the user becomes a moderator and a follower
86 let keypair = generate_actor_keypair()?;
88 let community_form = CommunityForm {
89 name: data.name.to_owned(),
90 title: data.title.to_owned(),
95 actor_id: Some(community_actor_id.to_owned()),
96 private_key: Some(Some(keypair.private_key)),
97 public_key: Some(keypair.public_key),
98 followers_url: Some(generate_followers_url(&community_actor_id)?),
99 inbox_url: Some(generate_inbox_url(&community_actor_id)?),
100 shared_inbox_url: Some(Some(generate_shared_inbox_url(&community_actor_id)?)),
101 posting_restricted_to_mods: data.posting_restricted_to_mods,
102 ..CommunityForm::default()
105 let inserted_community = blocking(context.pool(), move |conn| {
106 Community::create(conn, &community_form)
109 .map_err(|e| LemmyError::from_error_message(e, "community_already_exists"))?;
111 // The community creator becomes a moderator
112 let community_moderator_form = CommunityModeratorForm {
113 community_id: inserted_community.id,
114 person_id: local_user_view.person.id,
117 let join = move |conn: &mut _| CommunityModerator::join(conn, &community_moderator_form);
118 blocking(context.pool(), join)
120 .map_err(|e| LemmyError::from_error_message(e, "community_moderator_already_exists"))?;
122 // Follow your own community
123 let community_follower_form = CommunityFollowerForm {
124 community_id: inserted_community.id,
125 person_id: local_user_view.person.id,
129 let follow = move |conn: &mut _| CommunityFollower::follow(conn, &community_follower_form);
130 blocking(context.pool(), follow)
132 .map_err(|e| LemmyError::from_error_message(e, "community_follower_already_exists"))?;
134 let person_id = local_user_view.person.id;
135 let community_view = blocking(context.pool(), move |conn| {
136 CommunityView::read(conn, inserted_community.id, Some(person_id))
140 Ok(CommunityResponse { community_view })