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::UserOperationCrud,
  17 };
  18 use lemmy_db_schema::{
  19   source::{
  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},
  25   },
  26   traits::{Crud, Likeable},
  27 };
  28 use lemmy_utils::{
  29   error::LemmyError,
  30   utils::{mention::scrape_text_for_mentions, slurs::remove_slurs},
  31   ConnectionId,
  32 };
  33
  34 #[async_trait::async_trait(?Send)]
  35 impl PerformCrud for CreateComment {
  36   type Response = CommentResponse;
  37
  38   #[tracing::instrument(skip(context, websocket_id))]
  39   async fn perform(
  40     &self,
  41     context: &Data<LemmyContext>,
  42     websocket_id: Option<ConnectionId>,
  43   ) -> Result<CommentResponse, LemmyError> {
  44     let data: &CreateComment = self;
  45     let local_user_view =
  46       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  47     let local_site = LocalSite::read(context.pool()).await?;
  48
  49     let content_slurs_removed = remove_slurs(
  50       &data.content.clone(),
  51       &local_site_to_slur_regex(&local_site),
  52     );
  53
  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;
  58
  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)?;
  62
  63     // Check if post is locked, no new comments
  64     if post.locked {
  65       return Err(LemmyError::from_message("locked"));
  66     }
  67
  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()
  71     } else {
  72       None
  73     };
  74
  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"));
  80       }
  81     }
  82
  83     // if no language is set, copy language from parent post/comment
  84     let parent_language = parent_opt
  85       .as_ref()
  86       .map(|p| p.language_id)
  87       .unwrap_or(post.language_id);
  88     let language_id = data.language_id.unwrap_or(parent_language);
  89
  90     CommunityLanguage::is_allowed_community_language(
  91       context.pool(),
  92       Some(language_id),
  93       community_id,
  94     )
  95     .await?;
  96
  97     let comment_form = CommentInsertForm::builder()
  98       .content(content_slurs_removed.clone())
  99       .post_id(data.post_id)
 100       .creator_id(local_user_view.person.id)
 101       .language_id(Some(language_id))
 102       .build();
 103
 104     // Create the comment
 105     let comment_form2 = comment_form.clone();
 106     let parent_path = parent_opt.clone().map(|t| t.path);
 107     let inserted_comment = Comment::create(context.pool(), &comment_form2, parent_path.as_ref())
 108       .await
 109       .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
 110
 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();
 114
 115     let apub_id = generate_local_apub_endpoint(
 116       EndpointType::Comment,
 117       &inserted_comment_id.to_string(),
 118       &protocol_and_hostname,
 119     )?;
 120     let updated_comment = Comment::update(
 121       context.pool(),
 122       inserted_comment_id,
 123       &CommentUpdateForm::builder().ap_id(Some(apub_id)).build(),
 124     )
 125     .await
 126     .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
 127
 128     // Scan the comment for user mentions, add those rows
 129     let post_id = post.id;
 130     let mentions = scrape_text_for_mentions(&content_slurs_removed);
 131     let recipient_ids = context
 132       .send_local_notifs(
 133         mentions,
 134         &updated_comment,
 135         &local_user_view.person,
 136         &post,
 137         true,
 138       )
 139       .await?;
 140
 141     // You like your own comment by default
 142     let like_form = CommentLikeForm {
 143       comment_id: inserted_comment.id,
 144       post_id,
 145       person_id: local_user_view.person.id,
 146       score: 1,
 147     };
 148
 149     CommentLike::like(context.pool(), &like_form)
 150       .await
 151       .map_err(|e| LemmyError::from_error_message(e, "couldnt_like_comment"))?;
 152
 153     // If its a reply, mark the parent as read
 154     if let Some(parent) = parent_opt {
 155       let parent_id = parent.id;
 156       let comment_reply = CommentReply::read_by_comment(context.pool(), parent_id).await;
 157       if let Ok(reply) = comment_reply {
 158         CommentReply::update(
 159           context.pool(),
 160           reply.id,
 161           &CommentReplyUpdateForm { read: Some(true) },
 162         )
 163         .await
 164         .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_replies"))?;
 165       }
 166
 167       // If the parent has PersonMentions mark them as read too
 168       let person_id = local_user_view.person.id;
 169       let person_mention =
 170         PersonMention::read_by_comment_and_person(context.pool(), parent_id, person_id).await;
 171       if let Ok(mention) = person_mention {
 172         PersonMention::update(
 173           context.pool(),
 174           mention.id,
 175           &PersonMentionUpdateForm { read: Some(true) },
 176         )
 177         .await
 178         .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_person_mentions"))?;
 179       }
 180     }
 181
 182     context
 183       .send_comment_ws_message(
 184         &UserOperationCrud::CreateComment,
 185         inserted_comment.id,
 186         websocket_id,
 187         data.form_id.clone(),
 188         Some(local_user_view.person.id),
 189         recipient_ids,
 190       )
 191       .await
 192   }
 193 }