crates/api_crud/src/comment/create.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   comment::{CommentResponse, CreateComment},
   5   context::LemmyContext,
   6   utils::{
   7     check_community_ban,
   8     check_community_deleted_or_removed,
   9     check_post_deleted_or_removed,
  10     generate_local_apub_endpoint,
  11     get_local_user_view_from_jwt,
  12     get_post,
  13     local_site_to_slur_regex,
  14     EndpointType,
  15   },
  16   websocket::{
  17     send::{send_comment_ws_message, send_local_notifs},
  18     UserOperationCrud,
  19   },
  20 };
  21 use lemmy_db_schema::{
  22   source::{
  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},
  28   },
  29   traits::{Crud, Likeable},
  30 };
  31 use lemmy_utils::{
  32   error::LemmyError,
  33   utils::{mention::scrape_text_for_mentions, slurs::remove_slurs},
  34   ConnectionId,
  35 };
  36
  37 #[async_trait::async_trait(?Send)]
  38 impl PerformCrud for CreateComment {
  39   type Response = CommentResponse;
  40
  41   #[tracing::instrument(skip(context, websocket_id))]
  42   async fn perform(
  43     &self,
  44     context: &Data<LemmyContext>,
  45     websocket_id: Option<ConnectionId>,
  46   ) -> Result<CommentResponse, LemmyError> {
  47     let data: &CreateComment = self;
  48     let local_user_view =
  49       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  50     let local_site = LocalSite::read(context.pool()).await?;
  51
  52     let content_slurs_removed = remove_slurs(
  53       &data.content.clone(),
  54       &local_site_to_slur_regex(&local_site),
  55     );
  56
  57     // Check for a community ban
  58     let post_id = data.post_id;
  59     let post = get_post(post_id, context.pool()).await?;
  60     let community_id = post.community_id;
  61
  62     check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
  63     check_community_deleted_or_removed(community_id, context.pool()).await?;
  64     check_post_deleted_or_removed(&post)?;
  65
  66     // Check if post is locked, no new comments
  67     if post.locked {
  68       return Err(LemmyError::from_message("locked"));
  69     }
  70
  71     // Fetch the parent, if it exists
  72     let parent_opt = if let Some(parent_id) = data.parent_id {
  73       Comment::read(context.pool(), parent_id).await.ok()
  74     } else {
  75       None
  76     };
  77
  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(LemmyError::from_message("couldnt_create_comment"));
  83       }
  84     }
  85
  86     // if no language is set, copy language from parent post/comment
  87     let parent_language = parent_opt
  88       .as_ref()
  89       .map(|p| p.language_id)
  90       .unwrap_or(post.language_id);
  91     let language_id = data.language_id.unwrap_or(parent_language);
  92
  93     CommunityLanguage::is_allowed_community_language(
  94       context.pool(),
  95       Some(language_id),
  96       community_id,
  97     )
  98     .await?;
  99
 100     let comment_form = CommentInsertForm::builder()
 101       .content(content_slurs_removed.clone())
 102       .post_id(data.post_id)
 103       .creator_id(local_user_view.person.id)
 104       .language_id(Some(language_id))
 105       .build();
 106
 107     // Create the comment
 108     let comment_form2 = comment_form.clone();
 109     let parent_path = parent_opt.clone().map(|t| t.path);
 110     let inserted_comment = Comment::create(context.pool(), &comment_form2, parent_path.as_ref())
 111       .await
 112       .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
 113
 114     // Necessary to update the ap_id
 115     let inserted_comment_id = inserted_comment.id;
 116     let protocol_and_hostname = context.settings().get_protocol_and_hostname();
 117
 118     let apub_id = generate_local_apub_endpoint(
 119       EndpointType::Comment,
 120       &inserted_comment_id.to_string(),
 121       &protocol_and_hostname,
 122     )?;
 123     let updated_comment = Comment::update(
 124       context.pool(),
 125       inserted_comment_id,
 126       &CommentUpdateForm::builder().ap_id(Some(apub_id)).build(),
 127     )
 128     .await
 129     .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
 130
 131     // Scan the comment for user mentions, add those rows
 132     let post_id = post.id;
 133     let mentions = scrape_text_for_mentions(&content_slurs_removed);
 134     let recipient_ids = send_local_notifs(
 135       mentions,
 136       &updated_comment,
 137       &local_user_view.person,
 138       &post,
 139       true,
 140       context,
 141     )
 142     .await?;
 143
 144     // You like your own comment by default
 145     let like_form = CommentLikeForm {
 146       comment_id: inserted_comment.id,
 147       post_id,
 148       person_id: local_user_view.person.id,
 149       score: 1,
 150     };
 151
 152     CommentLike::like(context.pool(), &like_form)
 153       .await
 154       .map_err(|e| LemmyError::from_error_message(e, "couldnt_like_comment"))?;
 155
 156     // If its a reply, mark the parent as read
 157     if let Some(parent) = parent_opt {
 158       let parent_id = parent.id;
 159       let comment_reply = CommentReply::read_by_comment(context.pool(), parent_id).await;
 160       if let Ok(reply) = comment_reply {
 161         CommentReply::update(
 162           context.pool(),
 163           reply.id,
 164           &CommentReplyUpdateForm { read: Some(true) },
 165         )
 166         .await
 167         .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_replies"))?;
 168       }
 169
 170       // If the parent has PersonMentions mark them as read too
 171       let person_id = local_user_view.person.id;
 172       let person_mention =
 173         PersonMention::read_by_comment_and_person(context.pool(), parent_id, person_id).await;
 174       if let Ok(mention) = person_mention {
 175         PersonMention::update(
 176           context.pool(),
 177           mention.id,
 178           &PersonMentionUpdateForm { read: Some(true) },
 179         )
 180         .await
 181         .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_person_mentions"))?;
 182       }
 183     }
 184
 185     send_comment_ws_message(
 186       inserted_comment.id,
 187       UserOperationCrud::CreateComment,
 188       websocket_id,
 189       data.form_id.clone(),
 190       Some(local_user_view.person.id),
 191       recipient_ids,
 192       context,
 193     )
 194     .await
 195   }
 196 }