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   utils::{
   6     check_community_ban,
   7     check_community_deleted_or_removed,
   8     check_post_deleted_or_removed,
   9     get_local_user_view_from_jwt,
  10     get_post,
  11     local_site_to_slur_regex,
  12   },
  13   websocket::{
  14     send::{send_comment_ws_message, send_local_notifs},
  15     UserOperationCrud,
  16   },
  17   LemmyContext,
  18 };
  19 use lemmy_apub::{
  20   generate_local_apub_endpoint,
  21   objects::comment::ApubComment,
  22   protocol::activities::{create_or_update::note::CreateOrUpdateNote, CreateOrUpdateType},
  23   EndpointType,
  24 };
  25 use lemmy_db_schema::{
  26   source::{
  27     actor_language::CommunityLanguage,
  28     comment::{Comment, CommentInsertForm, CommentLike, CommentLikeForm, CommentUpdateForm},
  29     comment_reply::{CommentReply, CommentReplyUpdateForm},
  30     local_site::LocalSite,
  31     person_mention::{PersonMention, PersonMentionUpdateForm},
  32   },
  33   traits::{Crud, Likeable},
  34 };
  35 use lemmy_utils::{
  36   error::LemmyError,
  37   utils::{remove_slurs, scrape_text_for_mentions},
  38   ConnectionId,
  39 };
  40
  41 #[async_trait::async_trait(?Send)]
  42 impl PerformCrud for CreateComment {
  43   type Response = CommentResponse;
  44
  45   #[tracing::instrument(skip(context, websocket_id))]
  46   async fn perform(
  47     &self,
  48     context: &Data<LemmyContext>,
  49     websocket_id: Option<ConnectionId>,
  50   ) -> Result<CommentResponse, LemmyError> {
  51     let data: &CreateComment = self;
  52     let local_user_view =
  53       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  54     let local_site = LocalSite::read(context.pool()).await?;
  55
  56     let content_slurs_removed = remove_slurs(
  57       &data.content.clone(),
  58       &local_site_to_slur_regex(&local_site),
  59     );
  60
  61     // Check for a community ban
  62     let post_id = data.post_id;
  63     let post = get_post(post_id, context.pool()).await?;
  64     let community_id = post.community_id;
  65
  66     check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
  67     check_community_deleted_or_removed(community_id, context.pool()).await?;
  68     check_post_deleted_or_removed(&post)?;
  69
  70     // Check if post is locked, no new comments
  71     if post.locked {
  72       return Err(LemmyError::from_message("locked"));
  73     }
  74
  75     // Fetch the parent, if it exists
  76     let parent_opt = if let Some(parent_id) = data.parent_id {
  77       Comment::read(context.pool(), parent_id).await.ok()
  78     } else {
  79       None
  80     };
  81
  82     // If there's a parent_id, check to make sure that comment is in that post
  83     // Strange issue where sometimes the post ID of the parent comment is incorrect
  84     if let Some(parent) = parent_opt.as_ref() {
  85       if parent.post_id != post_id {
  86         return Err(LemmyError::from_message("couldnt_create_comment"));
  87       }
  88     }
  89
  90     // if no language is set, copy language from parent post/comment
  91     let parent_language = parent_opt
  92       .as_ref()
  93       .map(|p| p.language_id)
  94       .unwrap_or(post.language_id);
  95     let language_id = data.language_id.unwrap_or(parent_language);
  96
  97     CommunityLanguage::is_allowed_community_language(
  98       context.pool(),
  99       Some(language_id),
 100       community_id,
 101     )
 102     .await?;
 103
 104     let comment_form = CommentInsertForm::builder()
 105       .content(content_slurs_removed.clone())
 106       .post_id(data.post_id)
 107       .creator_id(local_user_view.person.id)
 108       .language_id(Some(language_id))
 109       .build();
 110
 111     // Create the comment
 112     let comment_form2 = comment_form.clone();
 113     let parent_path = parent_opt.clone().map(|t| t.path);
 114     let inserted_comment = Comment::create(context.pool(), &comment_form2, parent_path.as_ref())
 115       .await
 116       .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
 117
 118     // Necessary to update the ap_id
 119     let inserted_comment_id = inserted_comment.id;
 120     let protocol_and_hostname = context.settings().get_protocol_and_hostname();
 121
 122     let apub_id = generate_local_apub_endpoint(
 123       EndpointType::Comment,
 124       &inserted_comment_id.to_string(),
 125       &protocol_and_hostname,
 126     )?;
 127     let updated_comment = Comment::update(
 128       context.pool(),
 129       inserted_comment_id,
 130       &CommentUpdateForm::builder().ap_id(Some(apub_id)).build(),
 131     )
 132     .await
 133     .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
 134
 135     // Scan the comment for user mentions, add those rows
 136     let post_id = post.id;
 137     let mentions = scrape_text_for_mentions(&content_slurs_removed);
 138     let recipient_ids = send_local_notifs(
 139       mentions,
 140       &updated_comment,
 141       &local_user_view.person,
 142       &post,
 143       true,
 144       context,
 145     )
 146     .await?;
 147
 148     // You like your own comment by default
 149     let like_form = CommentLikeForm {
 150       comment_id: inserted_comment.id,
 151       post_id,
 152       person_id: local_user_view.person.id,
 153       score: 1,
 154     };
 155
 156     CommentLike::like(context.pool(), &like_form)
 157       .await
 158       .map_err(|e| LemmyError::from_error_message(e, "couldnt_like_comment"))?;
 159
 160     let apub_comment: ApubComment = updated_comment.into();
 161     CreateOrUpdateNote::send(
 162       apub_comment.clone(),
 163       &local_user_view.person.clone().into(),
 164       CreateOrUpdateType::Create,
 165       context,
 166       &mut 0,
 167     )
 168     .await?;
 169
 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(context.pool(), parent_id).await;
 174       if let Ok(reply) = comment_reply {
 175         CommentReply::update(
 176           context.pool(),
 177           reply.id,
 178           &CommentReplyUpdateForm { read: Some(true) },
 179         )
 180         .await
 181         .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_replies"))?;
 182       }
 183
 184       // If the parent has PersonMentions mark them as read too
 185       let person_id = local_user_view.person.id;
 186       let person_mention =
 187         PersonMention::read_by_comment_and_person(context.pool(), parent_id, person_id).await;
 188       if let Ok(mention) = person_mention {
 189         PersonMention::update(
 190           context.pool(),
 191           mention.id,
 192           &PersonMentionUpdateForm { read: Some(true) },
 193         )
 194         .await
 195         .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_person_mentions"))?;
 196       }
 197     }
 198
 199     send_comment_ws_message(
 200       inserted_comment.id,
 201       UserOperationCrud::CreateComment,
 202       websocket_id,
 203       data.form_id.clone(),
 204       Some(local_user_view.person.id),
 205       recipient_ids,
 206       context,
 207     )
 208     .await
 209   }
 210 }