1 use activitypub_federation::config::Data;
2 use actix_web::web::Json;
3 use lemmy_api_common::{
4 build_response::{build_comment_response, send_local_notifs},
5 comment::{CommentResponse, CreateComment},
7 send_activity::{ActivityChannel, SendActivityData},
10 check_community_deleted_or_removed,
11 check_post_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,
24 comment::{Comment, CommentInsertForm, CommentLike, CommentLikeForm, CommentUpdateForm},
25 comment_reply::{CommentReply, CommentReplyUpdateForm},
26 local_site::LocalSite,
27 person_mention::{PersonMention, PersonMentionUpdateForm},
29 traits::{Crud, Likeable},
32 error::{LemmyError, LemmyErrorExt, LemmyErrorType},
34 mention::scrape_text_for_mentions,
36 validation::is_valid_body_field,
40 const MAX_COMMENT_DEPTH_LIMIT: usize = 100;
42 #[tracing::instrument(skip(context))]
43 pub async fn create_comment(
44 data: Json<CreateComment>,
45 context: Data<LemmyContext>,
46 ) -> Result<Json<CommentResponse>, LemmyError> {
47 let local_user_view = local_user_view_from_jwt(&data.auth, &context).await?;
48 let local_site = LocalSite::read(&mut context.pool()).await?;
50 let content = remove_slurs(
51 &data.content.clone(),
52 &local_site_to_slur_regex(&local_site),
54 is_valid_body_field(&Some(content.clone()), false)?;
55 let content = sanitize_html(&content);
57 // Check for a community ban
58 let post_id = data.post_id;
59 let post = get_post(post_id, &mut context.pool()).await?;
60 let community_id = post.community_id;
62 check_community_ban(local_user_view.person.id, community_id, &mut context.pool()).await?;
63 check_community_deleted_or_removed(community_id, &mut context.pool()).await?;
64 check_post_deleted_or_removed(&post)?;
66 // Check if post is locked, no new comments
68 return Err(LemmyErrorType::Locked)?;
71 // Fetch the parent, if it exists
72 let parent_opt = if let Some(parent_id) = data.parent_id {
73 Comment::read(&mut context.pool(), parent_id).await.ok()
78 // If there's a parent_id, check to make sure that comment is in that post
79 // Strange issue where sometimes the post ID of the parent comment is incorrect
80 if let Some(parent) = parent_opt.as_ref() {
81 if parent.post_id != post_id {
82 return Err(LemmyErrorType::CouldntCreateComment)?;
84 check_comment_depth(parent)?;
87 CommunityLanguage::is_allowed_community_language(
94 // attempt to set default language if none was provided
95 let language_id = match data.language_id {
96 Some(lid) => Some(lid),
98 default_post_language(
101 local_user_view.local_user.id,
107 let comment_form = CommentInsertForm::builder()
108 .content(content.clone())
109 .post_id(data.post_id)
110 .creator_id(local_user_view.person.id)
111 .language_id(language_id)
114 // Create the comment
115 let parent_path = parent_opt.clone().map(|t| t.path);
116 let inserted_comment = Comment::create(&mut context.pool(), &comment_form, parent_path.as_ref())
118 .with_lemmy_type(LemmyErrorType::CouldntCreateComment)?;
120 // Necessary to update the ap_id
121 let inserted_comment_id = inserted_comment.id;
122 let protocol_and_hostname = context.settings().get_protocol_and_hostname();
124 let apub_id = generate_local_apub_endpoint(
125 EndpointType::Comment,
126 &inserted_comment_id.to_string(),
127 &protocol_and_hostname,
129 let updated_comment = Comment::update(
133 ap_id: Some(apub_id),
138 .with_lemmy_type(LemmyErrorType::CouldntCreateComment)?;
140 // Scan the comment for user mentions, add those rows
141 let mentions = scrape_text_for_mentions(&content);
142 let recipient_ids = send_local_notifs(
145 &local_user_view.person,
152 // You like your own comment by default
153 let like_form = CommentLikeForm {
154 comment_id: inserted_comment.id,
156 person_id: local_user_view.person.id,
160 CommentLike::like(&mut context.pool(), &like_form)
162 .with_lemmy_type(LemmyErrorType::CouldntLikeComment)?;
164 ActivityChannel::submit_activity(
165 SendActivityData::CreateComment(updated_comment.clone()),
170 // If its a reply, mark the parent as read
171 if let Some(parent) = parent_opt {
172 let parent_id = parent.id;
173 let comment_reply = CommentReply::read_by_comment(&mut context.pool(), parent_id).await;
174 if let Ok(reply) = comment_reply {
175 CommentReply::update(
178 &CommentReplyUpdateForm { read: Some(true) },
181 .with_lemmy_type(LemmyErrorType::CouldntUpdateReplies)?;
184 // If the parent has PersonMentions mark them as read too
185 let person_id = local_user_view.person.id;
187 PersonMention::read_by_comment_and_person(&mut context.pool(), parent_id, person_id).await;
188 if let Ok(mention) = person_mention {
189 PersonMention::update(
192 &PersonMentionUpdateForm { read: Some(true) },
195 .with_lemmy_type(LemmyErrorType::CouldntUpdatePersonMentions)?;
200 build_comment_response(
203 Some(local_user_view),
210 pub fn check_comment_depth(comment: &Comment) -> Result<(), LemmyError> {
211 let path = &comment.path.0;
212 let length = path.split('.').count();
213 if length > MAX_COMMENT_DEPTH_LIMIT {
214 Err(LemmyErrorType::MaxCommentDepthReached)?