use crate::PerformCrud; use activitypub_federation::core::{object_id::ObjectId, signatures::generate_actor_keypair}; use actix_web::web::Data; use lemmy_api_common::{ community::{CommunityResponse, CreateCommunity}, utils::{blocking, get_local_user_view_from_jwt, is_admin, local_site_to_slur_regex}, }; use lemmy_apub::{ generate_followers_url, generate_inbox_url, generate_local_apub_endpoint, generate_shared_inbox_url, objects::community::ApubCommunity, EndpointType, }; use lemmy_db_schema::{ source::community::{ Community, CommunityFollower, CommunityFollowerForm, CommunityInsertForm, CommunityModerator, CommunityModeratorForm, }, traits::{Crud, Followable, Joinable}, utils::diesel_option_overwrite_to_url_create, }; use lemmy_db_views::structs::SiteView; use lemmy_db_views_actor::structs::CommunityView; use lemmy_utils::{ error::LemmyError, utils::{check_slurs, check_slurs_opt, is_valid_actor_name}, ConnectionId, }; use lemmy_websocket::LemmyContext; #[async_trait::async_trait(?Send)] impl PerformCrud for CreateCommunity { type Response = CommunityResponse; #[tracing::instrument(skip(context, _websocket_id))] async fn perform( &self, context: &Data, _websocket_id: Option, ) -> Result { let data: &CreateCommunity = self; let local_user_view = get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?; let site_view = blocking(context.pool(), SiteView::read_local).await??; let local_site = site_view.local_site; if local_site.community_creation_admin_only && is_admin(&local_user_view).is_err() { return Err(LemmyError::from_message( "only_admins_can_create_communities", )); } // Check to make sure the icon and banners are urls let icon = diesel_option_overwrite_to_url_create(&data.icon)?; let banner = diesel_option_overwrite_to_url_create(&data.banner)?; let slur_regex = local_site_to_slur_regex(&local_site); check_slurs(&data.name, &slur_regex)?; check_slurs(&data.title, &slur_regex)?; check_slurs_opt(&data.description, &slur_regex)?; if !is_valid_actor_name(&data.name, local_site.actor_name_max_length as usize) { return Err(LemmyError::from_message("invalid_community_name")); } // 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::::new(community_actor_id.clone()); let community_dupe = community_actor_id_wrapped.dereference_local(context).await; if community_dupe.is_ok() { return Err(LemmyError::from_message("community_already_exists")); } // When you create a community, make sure the user becomes a moderator and a follower let keypair = generate_actor_keypair()?; let community_form = CommunityInsertForm::builder() .name(data.name.to_owned()) .title(data.title.to_owned()) .description(data.description.to_owned()) .icon(icon) .banner(banner) .nsfw(data.nsfw) .actor_id(Some(community_actor_id.to_owned())) .private_key(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(generate_shared_inbox_url(&community_actor_id)?)) .posting_restricted_to_mods(data.posting_restricted_to_mods) .instance_id(site_view.site.instance_id) .build(); let inserted_community = blocking(context.pool(), move |conn| { Community::create(conn, &community_form) }) .await? .map_err(|e| LemmyError::from_error_message(e, "community_already_exists"))?; // 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: &mut _| CommunityModerator::join(conn, &community_moderator_form); blocking(context.pool(), join) .await? .map_err(|e| LemmyError::from_error_message(e, "community_moderator_already_exists"))?; // 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: &mut _| CommunityFollower::follow(conn, &community_follower_form); blocking(context.pool(), follow) .await? .map_err(|e| LemmyError::from_error_message(e, "community_follower_already_exists"))?; 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 }) } }