crates/api_crud/src/comment/create.rs

   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},
   6   context::LemmyContext,
   7   utils::{
   8     check_community_ban,
   9     check_community_deleted_or_removed,
  10     check_post_deleted_or_removed,
  11     generate_local_apub_endpoint,
  12     get_post,
  13     local_site_to_slur_regex,
  14     local_user_view_from_jwt,
  15     EndpointType,
  16   },
  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 };
  36
  37 #[async_trait::async_trait(?Send)]
  38 impl PerformCrud for CreateComment {
  39   type Response = CommentResponse;
  40
  41   #[tracing::instrument(skip(context))]
  42   async fn perform(&self, context: &Data<LemmyContext>) -> Result<CommentResponse, LemmyError> {
  43     let data: &CreateComment = self;
  44     let local_user_view = local_user_view_from_jwt(&data.auth, context).await?;
  45     let local_site = LocalSite::read(context.pool()).await?;
  46
  47     let content_slurs_removed = remove_slurs(
  48       &data.content.clone(),
  49       &local_site_to_slur_regex(&local_site),
  50     );
  51     is_valid_body_field(&Some(content_slurs_removed.clone()))?;
  52
  53     // Check for a community ban
  54     let post_id = data.post_id;
  55     let post = get_post(post_id, context.pool()).await?;
  56     let community_id = post.community_id;
  57
  58     check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
  59     check_community_deleted_or_removed(community_id, context.pool()).await?;
  60     check_post_deleted_or_removed(&post)?;
  61
  62     // Check if post is locked, no new comments
  63     if post.locked {
  64       return Err(LemmyError::from_message("locked"));
  65     }
  66
  67     // Fetch the parent, if it exists
  68     let parent_opt = if let Some(parent_id) = data.parent_id {
  69       Comment::read(context.pool(), parent_id).await.ok()
  70     } else {
  71       None
  72     };
  73
  74     // If there's a parent_id, check to make sure that comment is in that post
  75     // Strange issue where sometimes the post ID of the parent comment is incorrect
  76     if let Some(parent) = parent_opt.as_ref() {
  77       if parent.post_id != post_id {
  78         return Err(LemmyError::from_message("couldnt_create_comment"));
  79       }
  80     }
  81
  82     // if no language is set, copy language from parent post/comment
  83     let parent_language = parent_opt
  84       .as_ref()
  85       .map(|p| p.language_id)
  86       .unwrap_or(post.language_id);
  87     let language_id = data.language_id.unwrap_or(parent_language);
  88
  89     CommunityLanguage::is_allowed_community_language(
  90       context.pool(),
  91       Some(language_id),
  92       community_id,
  93     )
  94     .await?;
  95
  96     let comment_form = CommentInsertForm::builder()
  97       .content(content_slurs_removed.clone())
  98       .post_id(data.post_id)
  99       .creator_id(local_user_view.person.id)
 100       .language_id(Some(language_id))
 101       .build();
 102
 103     // Create the comment
 104     let parent_path = parent_opt.clone().map(|t| t.path);
 105     let inserted_comment = Comment::create(context.pool(), &comment_form, parent_path.as_ref())
 106       .await
 107       .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
 108
 109     // Necessary to update the ap_id
 110     let inserted_comment_id = inserted_comment.id;
 111     let protocol_and_hostname = context.settings().get_protocol_and_hostname();
 112
 113     let apub_id = generate_local_apub_endpoint(
 114       EndpointType::Comment,
 115       &inserted_comment_id.to_string(),
 116       &protocol_and_hostname,
 117     )?;
 118     let updated_comment = Comment::update(
 119       context.pool(),
 120       inserted_comment_id,
 121       &CommentUpdateForm::builder().ap_id(Some(apub_id)).build(),
 122     )
 123     .await
 124     .map_err(|e| LemmyError::from_error_message(e, "couldnt_create_comment"))?;
 125
 126     // Scan the comment for user mentions, add those rows
 127     let mentions = scrape_text_for_mentions(&content_slurs_removed);
 128     let recipient_ids = send_local_notifs(
 129       mentions,
 130       &updated_comment,
 131       &local_user_view.person,
 132       &post,
 133       true,
 134       context,
 135     )
 136     .await?;
 137
 138     // You like your own comment by default
 139     let like_form = CommentLikeForm {
 140       comment_id: inserted_comment.id,
 141       post_id: post.id,
 142       person_id: local_user_view.person.id,
 143       score: 1,
 144     };
 145
 146     CommentLike::like(context.pool(), &like_form)
 147       .await
 148       .map_err(|e| LemmyError::from_error_message(e, "couldnt_like_comment"))?;
 149
 150     // If its a reply, mark the parent as read
 151     if let Some(parent) = parent_opt {
 152       let parent_id = parent.id;
 153       let comment_reply = CommentReply::read_by_comment(context.pool(), parent_id).await;
 154       if let Ok(reply) = comment_reply {
 155         CommentReply::update(
 156           context.pool(),
 157           reply.id,
 158           &CommentReplyUpdateForm { read: Some(true) },
 159         )
 160         .await
 161         .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_replies"))?;
 162       }
 163
 164       // If the parent has PersonMentions mark them as read too
 165       let person_id = local_user_view.person.id;
 166       let person_mention =
 167         PersonMention::read_by_comment_and_person(context.pool(), parent_id, person_id).await;
 168       if let Ok(mention) = person_mention {
 169         PersonMention::update(
 170           context.pool(),
 171           mention.id,
 172           &PersonMentionUpdateForm { read: Some(true) },
 173         )
 174         .await
 175         .map_err(|e| LemmyError::from_error_message(e, "couldnt_update_person_mentions"))?;
 176       }
 177     }
 178
 179     build_comment_response(
 180       context,
 181       inserted_comment.id,
 182       Some(local_user_view),
 183       self.form_id.clone(),
 184       recipient_ids,
 185     )
 186     .await
 187   }
 188 }