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, local_site_to_slur_regex},
9 generate_followers_url,
11 generate_local_apub_endpoint,
12 generate_shared_inbox_url,
13 objects::community::ApubCommunity,
16 use lemmy_db_schema::{
20 CommunityFollowerForm,
23 CommunityModeratorForm,
25 traits::{Crud, Followable, Joinable},
26 utils::diesel_option_overwrite_to_url_create,
28 use lemmy_db_views::structs::SiteView;
29 use lemmy_db_views_actor::structs::CommunityView;
32 utils::{check_slurs, check_slurs_opt, is_valid_actor_name},
35 use lemmy_websocket::LemmyContext;
37 #[async_trait::async_trait(?Send)]
38 impl PerformCrud for CreateCommunity {
39 type Response = CommunityResponse;
41 #[tracing::instrument(skip(context, _websocket_id))]
44 context: &Data<LemmyContext>,
45 _websocket_id: Option<ConnectionId>,
46 ) -> Result<CommunityResponse, LemmyError> {
47 let data: &CreateCommunity = self;
49 get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
50 let site_view = blocking(context.pool(), SiteView::read_local).await??;
51 let local_site = site_view.local_site;
53 if local_site.community_creation_admin_only && is_admin(&local_user_view).is_err() {
54 return Err(LemmyError::from_message(
55 "only_admins_can_create_communities",
59 // Check to make sure the icon and banners are urls
60 let icon = diesel_option_overwrite_to_url_create(&data.icon)?;
61 let banner = diesel_option_overwrite_to_url_create(&data.banner)?;
63 let slur_regex = local_site_to_slur_regex(&local_site);
64 check_slurs(&data.name, &slur_regex)?;
65 check_slurs(&data.title, &slur_regex)?;
66 check_slurs_opt(&data.description, &slur_regex)?;
68 if !is_valid_actor_name(&data.name, local_site.actor_name_max_length as usize) {
69 return Err(LemmyError::from_message("invalid_community_name"));
72 // Double check for duplicate community actor_ids
73 let community_actor_id = generate_local_apub_endpoint(
74 EndpointType::Community,
76 &context.settings().get_protocol_and_hostname(),
78 let community_actor_id_wrapped = ObjectId::<ApubCommunity>::new(community_actor_id.clone());
79 let community_dupe = community_actor_id_wrapped.dereference_local(context).await;
80 if community_dupe.is_ok() {
81 return Err(LemmyError::from_message("community_already_exists"));
84 // When you create a community, make sure the user becomes a moderator and a follower
85 let keypair = generate_actor_keypair()?;
87 let community_form = CommunityInsertForm::builder()
88 .name(data.name.to_owned())
89 .title(data.title.to_owned())
90 .description(data.description.to_owned())
94 .actor_id(Some(community_actor_id.to_owned()))
95 .private_key(Some(keypair.private_key))
96 .public_key(keypair.public_key)
97 .followers_url(Some(generate_followers_url(&community_actor_id)?))
98 .inbox_url(Some(generate_inbox_url(&community_actor_id)?))
99 .shared_inbox_url(Some(generate_shared_inbox_url(&community_actor_id)?))
100 .posting_restricted_to_mods(data.posting_restricted_to_mods)
101 .instance_id(site_view.site.instance_id)
104 let inserted_community = blocking(context.pool(), move |conn| {
105 Community::create(conn, &community_form)
108 .map_err(|e| LemmyError::from_error_message(e, "community_already_exists"))?;
110 // The community creator becomes a moderator
111 let community_moderator_form = CommunityModeratorForm {
112 community_id: inserted_community.id,
113 person_id: local_user_view.person.id,
116 let join = move |conn: &mut _| CommunityModerator::join(conn, &community_moderator_form);
117 blocking(context.pool(), join)
119 .map_err(|e| LemmyError::from_error_message(e, "community_moderator_already_exists"))?;
121 // Follow your own community
122 let community_follower_form = CommunityFollowerForm {
123 community_id: inserted_community.id,
124 person_id: local_user_view.person.id,
128 let follow = move |conn: &mut _| CommunityFollower::follow(conn, &community_follower_form);
129 blocking(context.pool(), follow)
131 .map_err(|e| LemmyError::from_error_message(e, "community_follower_already_exists"))?;
133 let person_id = local_user_view.person.id;
134 let community_view = blocking(context.pool(), move |conn| {
135 CommunityView::read(conn, inserted_community.id, Some(person_id))
139 Ok(CommunityResponse { community_view })