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_post,
  12     local_site_to_slur_regex,
  13     local_user_view_from_jwt,
  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::{
  31     mention::scrape_text_for_mentions,
  32     slurs::remove_slurs,
  33     validation::is_valid_body_field,
  34   },
  35   ConnectionId,
  36 };
  37
  38 #[async_trait::async_trait(?Send)]
  39 impl PerformCrud for CreateComment {
  40   type Response = CommentResponse;
  41
  42   #[tracing::instrument(skip(context, websocket_id))]
  43   async fn perform(
  44     &self,
  45     context: &Data<LemmyContext>,
  46     websocket_id: Option<ConnectionId>,
  47   ) -> Result<CommentResponse, LemmyError> {
  48     let data: &CreateComment = self;
  49     let local_user_view = local_user_view_from_jwt(&data.auth, context).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     is_valid_body_field(&Some(content_slurs_removed.clone()))?;
  57
  58     // Check for a community ban
  59     let post_id = data.post_id;
  60     let post = get_post(post_id, context.pool()).await?;
  61     let community_id = post.community_id;
  62
  63     check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
  64     check_community_deleted_or_removed(community_id, context.pool()).await?;
  65     check_post_deleted_or_removed(&post)?;
  66
  67     // Check if post is locked, no new comments
  68     if post.locked {
  69       return Err(LemmyError::from_message("locked"));
  70     }
  71
  72     // Fetch the parent, if it exists
  73     let parent_opt = if let Some(parent_id) = data.parent_id {
  74       Comment::read(context.pool(), parent_id).await.ok()
  75     } else {
  76       None
  77     };
  78
  79     // If there's a parent_id, check to make sure that comment is in that post
  80     // Strange issue where sometimes the post ID of the parent comment is incorrect
  81     if let Some(parent) = parent_opt.as_ref() {
  82       if parent.post_id != post_id {
  83         return Err(LemmyError::from_message("couldnt_create_comment"));
  84       }
  85     }
  86
  87     // if no language is set, copy language from parent post/comment
  88     let parent_language = parent_opt
  89       .as_ref()
  90       .map(|p| p.language_id)
  91       .unwrap_or(post.language_id);
  92     let language_id = data.language_id.unwrap_or(parent_language);
  93
  94     CommunityLanguage::is_allowed_community_language(
  95       context.pool(),
  96       Some(language_id),
  97       community_id,
  98     )
  99     .await?;
 100
 101     let comment_form = CommentInsertForm::builder()
 102       .content(content_slurs_removed.clone())
 103       .post_id(data.post_id)
 104       .creator_id(local_user_view.person.id)
 105       .language_id(Some(language_id))
 106       .build();
 107
 108     // Create the comment
 109     let parent_path = parent_opt.clone().map(|t| t.path);
 110     let inserted_comment = Comment::create(context.pool(), &comment_form, 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 = context
 135       .send_local_notifs(
 136         mentions,
 137         &updated_comment,
 138         &local_user_view.person,
 139         &post,
 140         true,
 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     context
 186       .send_comment_ws_message(
 187         &UserOperationCrud::CreateComment,
 188         inserted_comment.id,
 189         websocket_id,
 190         data.form_id.clone(),
 191         Some(local_user_view.person.id),
 192         recipient_ids,
 193       )
 194       .await
 195   }
 196 }