1 use activitypub_federation::config::Data;
2 use actix_web::web::Json;
3 use lemmy_api_common::{
4 build_response::build_post_response,
6 post::{CreatePost, PostResponse},
7 request::fetch_site_data,
8 send_activity::{ActivityChannel, SendActivityData},
11 check_community_deleted_or_removed,
12 generate_local_apub_endpoint,
14 local_site_to_slur_regex,
15 local_user_view_from_jwt,
20 use lemmy_db_schema::{
21 impls::actor_language::default_post_language,
23 actor_language::CommunityLanguage,
25 local_site::LocalSite,
26 post::{Post, PostInsertForm, PostLike, PostLikeForm, PostUpdateForm},
28 traits::{Crud, Likeable},
30 use lemmy_db_views_actor::structs::CommunityView;
32 error::{LemmyError, LemmyErrorExt, LemmyErrorType},
35 slurs::{check_slurs, check_slurs_opt},
36 validation::{check_url_scheme, clean_url_params, is_valid_body_field, is_valid_post_title},
38 SYNCHRONOUS_FEDERATION,
40 use tracing::Instrument;
42 use webmention::{Webmention, WebmentionError};
44 #[tracing::instrument(skip(context))]
45 pub async fn create_post(
46 data: Json<CreatePost>,
47 context: Data<LemmyContext>,
48 ) -> Result<Json<PostResponse>, LemmyError> {
49 let local_user_view = local_user_view_from_jwt(&data.auth, &context).await?;
50 let local_site = LocalSite::read(&mut context.pool()).await?;
52 let slur_regex = local_site_to_slur_regex(&local_site);
53 check_slurs(&data.name, &slur_regex)?;
54 check_slurs_opt(&data.body, &slur_regex)?;
55 honeypot_check(&data.honeypot)?;
57 let data_url = data.url.as_ref();
58 let url = data_url.map(clean_url_params).map(Into::into); // TODO no good way to handle a "clear"
60 is_valid_post_title(&data.name)?;
61 is_valid_body_field(&data.body, true)?;
62 check_url_scheme(&data.url)?;
65 local_user_view.person.id,
70 check_community_deleted_or_removed(data.community_id, &mut context.pool()).await?;
72 let community_id = data.community_id;
73 let community = Community::read(&mut context.pool(), community_id).await?;
74 if community.posting_restricted_to_mods {
75 let community_id = data.community_id;
76 let is_mod = CommunityView::is_mod_or_admin(
78 local_user_view.local_user.person_id,
83 return Err(LemmyErrorType::OnlyModsCanPostInCommunity)?;
87 // Fetch post links and pictrs cached image
88 let (metadata_res, thumbnail_url) =
89 fetch_site_data(context.client(), context.settings(), data_url, true).await;
90 let (embed_title, embed_description, embed_video_url) = metadata_res
91 .map(|u| (u.title, u.description, u.embed_video_url))
94 // Only need to check if language is allowed in case user set it explicitly. When using default
95 // language, it already only returns allowed languages.
96 CommunityLanguage::is_allowed_community_language(
103 // attempt to set default language if none was provided
104 let language_id = match data.language_id {
105 Some(lid) => Some(lid),
107 default_post_language(
110 local_user_view.local_user.id,
116 let post_form = PostInsertForm::builder()
117 .name(data.name.trim().to_owned())
119 .body(data.body.clone())
120 .community_id(data.community_id)
121 .creator_id(local_user_view.person.id)
123 .embed_title(embed_title)
124 .embed_description(embed_description)
125 .embed_video_url(embed_video_url)
126 .language_id(language_id)
127 .thumbnail_url(thumbnail_url)
130 let inserted_post = Post::create(&mut context.pool(), &post_form)
132 .with_lemmy_type(LemmyErrorType::CouldntCreatePost)?;
134 let inserted_post_id = inserted_post.id;
135 let protocol_and_hostname = context.settings().get_protocol_and_hostname();
136 let apub_id = generate_local_apub_endpoint(
138 &inserted_post_id.to_string(),
139 &protocol_and_hostname,
141 let updated_post = Post::update(
144 &PostUpdateForm::builder().ap_id(Some(apub_id)).build(),
147 .with_lemmy_type(LemmyErrorType::CouldntCreatePost)?;
149 // They like their own post by default
150 let person_id = local_user_view.person.id;
151 let post_id = inserted_post.id;
152 let like_form = PostLikeForm {
158 PostLike::like(&mut context.pool(), &like_form)
160 .with_lemmy_type(LemmyErrorType::CouldntLikePost)?;
162 ActivityChannel::submit_activity(SendActivityData::CreatePost(updated_post.clone()), &context)
165 // Mark the post as read
166 mark_post_as_read(person_id, post_id, &mut context.pool()).await?;
168 if let Some(url) = updated_post.url.clone() {
169 let task = async move {
171 Webmention::new::<Url>(updated_post.ap_id.clone().into(), url.clone().into())?;
172 webmention.set_checked(true);
175 .instrument(tracing::info_span!("Sending webmention"))
178 Err(WebmentionError::NoEndpointDiscovered(_)) => Ok(()),
180 Err(e) => Err(e).with_lemmy_type(LemmyErrorType::CouldntSendWebmention),
183 if *SYNCHRONOUS_FEDERATION {
186 spawn_try_task(task);
191 build_post_response(&context, community_id, person_id, post_id).await?,