1 use crate::PerformCrud;
2 use actix_web::web::Data;
3 use lemmy_api_common::{
4 build_response::{build_comment_response, send_local_notifs},
5 comment::{CommentResponse, CreateComment},
9 check_community_deleted_or_removed,
10 check_post_deleted_or_removed,
11 generate_local_apub_endpoint,
13 local_site_to_slur_regex,
14 local_user_view_from_jwt,
18 use lemmy_db_schema::{
20 actor_language::CommunityLanguage,
21 comment::{Comment, CommentInsertForm, CommentLike, CommentLikeForm, CommentUpdateForm},
22 comment_reply::{CommentReply, CommentReplyUpdateForm},
23 local_site::LocalSite,
24 person_mention::{PersonMention, PersonMentionUpdateForm},
26 traits::{Crud, Likeable},
31 mention::scrape_text_for_mentions,
33 validation::is_valid_body_field,
36 const MAX_COMMENT_DEPTH_LIMIT: usize = 100;
38 #[async_trait::async_trait(?Send)]
39 impl PerformCrud for CreateComment {
40 type Response = CommentResponse;
42 #[tracing::instrument(skip(context))]
43 async fn perform(&self, context: &Data<LemmyContext>) -> Result<CommentResponse, LemmyError> {
44 let data: &CreateComment = self;
45 let local_user_view = local_user_view_from_jwt(&data.auth, context).await?;
46 let local_site = LocalSite::read(context.pool()).await?;
48 let content_slurs_removed = remove_slurs(
49 &data.content.clone(),
50 &local_site_to_slur_regex(&local_site),
52 is_valid_body_field(&Some(content_slurs_removed.clone()), false)?;
54 // Check for a community ban
55 let post_id = data.post_id;
56 let post = get_post(post_id, context.pool()).await?;
57 let community_id = post.community_id;
59 check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
60 check_community_deleted_or_removed(community_id, context.pool()).await?;
61 check_post_deleted_or_removed(&post)?;
63 // Check if post is locked, no new comments
65 return Err(LemmyError::from_message("locked"));
68 // Fetch the parent, if it exists
69 let parent_opt = if let Some(parent_id) = data.parent_id {
70 Comment::read(context.pool(), parent_id).await.ok()
75 // If there's a parent_id, check to make sure that comment is in that post
76 // Strange issue where sometimes the post ID of the parent comment is incorrect
77 if let Some(parent) = parent_opt.as_ref() {
78 if parent.post_id != post_id {
79 return Err(LemmyError::from_message("couldnt_create_comment"));
81 check_comment_depth(parent)?;
84 // if no language is set, copy language from parent post/comment
85 let parent_language = parent_opt
87 .map(|p| p.language_id)
88 .unwrap_or(post.language_id);
89 let language_id = data.language_id.unwrap_or(parent_language);
91 CommunityLanguage::is_allowed_community_language(
98 let comment_form = CommentInsertForm::builder()
99 .content(content_slurs_removed.clone())
100 .post_id(data.post_id)
101 .creator_id(local_user_view.person.id)
102 .language_id(Some(language_id))
105 // Create the comment
106 let parent_path = parent_opt.clone().map(|t| t.path);
107 let inserted_comment = Comment::create(context.pool(), &comment_form, parent_path.as_ref())
109 .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
111 // Necessary to update the ap_id
112 let inserted_comment_id = inserted_comment.id;
113 let protocol_and_hostname = context.settings().get_protocol_and_hostname();
115 let apub_id = generate_local_apub_endpoint(
116 EndpointType::Comment,
117 &inserted_comment_id.to_string(),
118 &protocol_and_hostname,
120 let updated_comment = Comment::update(
123 &CommentUpdateForm::builder().ap_id(Some(apub_id)).build(),
126 .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
128 // Scan the comment for user mentions, add those rows
129 let mentions = scrape_text_for_mentions(&content_slurs_removed);
130 let recipient_ids = send_local_notifs(
133 &local_user_view.person,
140 // You like your own comment by default
141 let like_form = CommentLikeForm {
142 comment_id: inserted_comment.id,
144 person_id: local_user_view.person.id,
148 CommentLike::like(context.pool(), &like_form)
150 .map_err(|e| LemmyError::from_error_message(e, "couldnt_like_comment"))?;
152 // If its a reply, mark the parent as read
153 if let Some(parent) = parent_opt {
154 let parent_id = parent.id;
155 let comment_reply = CommentReply::read_by_comment(context.pool(), parent_id).await;
156 if let Ok(reply) = comment_reply {
157 CommentReply::update(
160 &CommentReplyUpdateForm { read: Some(true) },
163 .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_replies"))?;
166 // If the parent has PersonMentions mark them as read too
167 let person_id = local_user_view.person.id;
169 PersonMention::read_by_comment_and_person(context.pool(), parent_id, person_id).await;
170 if let Ok(mention) = person_mention {
171 PersonMention::update(
174 &PersonMentionUpdateForm { read: Some(true) },
177 .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_person_mentions"))?;
181 build_comment_response(
184 Some(local_user_view),
185 self.form_id.clone(),
192 pub fn check_comment_depth(comment: &Comment) -> Result<(), LemmyError> {
193 let path = &comment.path.0;
194 let length = path.split('.').collect::<Vec<&str>>().len();
195 if length > MAX_COMMENT_DEPTH_LIMIT {
196 Err(LemmyError::from_message("max_comment_depth_reached"))