crates/api_crud/src/comment/create.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   blocking,
   5   check_community_ban,
   6   check_community_deleted_or_removed,
   7   check_person_block,
   8   check_post_deleted_or_removed,
   9   comment::*,
  10   get_local_user_view_from_jwt,
  11   get_post,
  12   send_local_notifs,
  13 };
  14 use lemmy_apub::{
  15   activities::{
  16     comment::create_or_update::CreateOrUpdateComment,
  17     voting::vote::{Vote, VoteType},
  18     CreateOrUpdateType,
  19   },
  20   fetcher::post_or_comment::PostOrComment,
  21   generate_apub_endpoint,
  22   EndpointType,
  23 };
  24 use lemmy_db_queries::{
  25   source::{comment::Comment_, person_mention::PersonMention_},
  26   Crud,
  27   Likeable,
  28 };
  29 use lemmy_db_schema::source::{comment::*, person_mention::PersonMention};
  30 use lemmy_db_views::comment_view::CommentView;
  31 use lemmy_utils::{
  32   utils::{remove_slurs, scrape_text_for_mentions},
  33   ApiError,
  34   ConnectionId,
  35   LemmyError,
  36 };
  37 use lemmy_websocket::{send::send_comment_ws_message, LemmyContext, UserOperationCrud};
  38
  39 #[async_trait::async_trait(?Send)]
  40 impl PerformCrud for CreateComment {
  41   type Response = CommentResponse;
  42
  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 =
  50       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  51
  52     let content_slurs_removed =
  53       remove_slurs(&data.content.to_owned(), &context.settings().slur_regex());
  54
  55     // Check for a community ban
  56     let post_id = data.post_id;
  57     let post = get_post(post_id, context.pool()).await?;
  58     let community_id = post.community_id;
  59
  60     check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
  61     check_community_deleted_or_removed(community_id, context.pool()).await?;
  62     check_post_deleted_or_removed(&post)?;
  63
  64     check_person_block(local_user_view.person.id, post.creator_id, context.pool()).await?;
  65
  66     // Check if post is locked, no new comments
  67     if post.locked {
  68       return Err(ApiError::err_plain("locked").into());
  69     }
  70
  71     // If there's a parent_id, check to make sure that comment is in that post
  72     if let Some(parent_id) = data.parent_id {
  73       // Make sure the parent comment exists
  74       let parent = blocking(context.pool(), move |conn| Comment::read(conn, parent_id))
  75         .await?
  76         .map_err(|e| ApiError::err("couldnt_create_comment", e))?;
  77
  78       check_person_block(local_user_view.person.id, parent.creator_id, context.pool()).await?;
  79
  80       // Strange issue where sometimes the post ID is incorrect
  81       if parent.post_id != post_id {
  82         return Err(ApiError::err_plain("couldnt_create_comment").into());
  83       }
  84     }
  85
  86     let comment_form = CommentForm {
  87       content: content_slurs_removed,
  88       parent_id: data.parent_id.to_owned(),
  89       post_id: data.post_id,
  90       creator_id: local_user_view.person.id,
  91       ..CommentForm::default()
  92     };
  93
  94     // Create the comment
  95     let comment_form2 = comment_form.clone();
  96     let inserted_comment = blocking(context.pool(), move |conn| {
  97       Comment::create(conn, &comment_form2)
  98     })
  99     .await?
 100     .map_err(|e| ApiError::err("couldnt_create_comment", e))?;
 101
 102     // Necessary to update the ap_id
 103     let inserted_comment_id = inserted_comment.id;
 104     let protocol_and_hostname = context.settings().get_protocol_and_hostname();
 105
 106     let updated_comment: Comment =
 107       blocking(context.pool(), move |conn| -> Result<Comment, LemmyError> {
 108         let apub_id = generate_apub_endpoint(
 109           EndpointType::Comment,
 110           &inserted_comment_id.to_string(),
 111           &protocol_and_hostname,
 112         )?;
 113         Ok(Comment::update_ap_id(conn, inserted_comment_id, apub_id)?)
 114       })
 115       .await?
 116       .map_err(|e| ApiError::err("couldnt_create_comment", e))?;
 117
 118     CreateOrUpdateComment::send(
 119       &updated_comment,
 120       &local_user_view.person,
 121       CreateOrUpdateType::Create,
 122       context,
 123     )
 124     .await?;
 125
 126     // Scan the comment for user mentions, add those rows
 127     let post_id = post.id;
 128     let mentions = scrape_text_for_mentions(&comment_form.content);
 129     let recipient_ids = send_local_notifs(
 130       mentions,
 131       updated_comment.clone(),
 132       local_user_view.person.clone(),
 133       post,
 134       context.pool(),
 135       true,
 136       &context.settings(),
 137     )
 138     .await?;
 139
 140     // You like your own comment by default
 141     let like_form = CommentLikeForm {
 142       comment_id: inserted_comment.id,
 143       post_id,
 144       person_id: local_user_view.person.id,
 145       score: 1,
 146     };
 147
 148     let like = move |conn: &'_ _| CommentLike::like(conn, &like_form);
 149     blocking(context.pool(), like)
 150       .await?
 151       .map_err(|e| ApiError::err("couldnt_like_comment", e))?;
 152
 153     let object = PostOrComment::Comment(updated_comment);
 154     Vote::send(
 155       &object,
 156       &local_user_view.person,
 157       community_id,
 158       VoteType::Like,
 159       context,
 160     )
 161     .await?;
 162
 163     let person_id = local_user_view.person.id;
 164     let comment_id = inserted_comment.id;
 165     let comment_view = blocking(context.pool(), move |conn| {
 166       CommentView::read(conn, comment_id, Some(person_id))
 167     })
 168     .await??;
 169
 170     // If its a comment to yourself, mark it as read
 171     if local_user_view.person.id == comment_view.get_recipient_id() {
 172       let comment_id = inserted_comment.id;
 173       blocking(context.pool(), move |conn| {
 174         Comment::update_read(conn, comment_id, true)
 175       })
 176       .await?
 177       .map_err(|e| ApiError::err("couldnt_update_comment", e))?;
 178     }
 179     // If its a reply, mark the parent as read
 180     if let Some(parent_id) = data.parent_id {
 181       let parent_comment = blocking(context.pool(), move |conn| {
 182         CommentView::read(conn, parent_id, Some(person_id))
 183       })
 184       .await??;
 185       if local_user_view.person.id == parent_comment.get_recipient_id() {
 186         blocking(context.pool(), move |conn| {
 187           Comment::update_read(conn, parent_id, true)
 188         })
 189         .await?
 190         .map_err(|e| ApiError::err("couldnt_update_parent_comment", e))?;
 191       }
 192       // If the parent has PersonMentions mark them as read too
 193       let person_id = local_user_view.person.id;
 194       let person_mention = blocking(context.pool(), move |conn| {
 195         PersonMention::read_by_comment_and_person(conn, parent_id, person_id)
 196       })
 197       .await?;
 198       if let Ok(mention) = person_mention {
 199         blocking(context.pool(), move |conn| {
 200           PersonMention::update_read(conn, mention.id, true)
 201         })
 202         .await?
 203         .map_err(|e| ApiError::err("couldnt_update_person_mentions", e))?;
 204       }
 205     }
 206
 207     send_comment_ws_message(
 208       inserted_comment.id,
 209       UserOperationCrud::CreateComment,
 210       websocket_id,
 211       data.form_id.to_owned(),
 212       Some(local_user_view.person.id),
 213       recipient_ids,
 214       context,
 215     )
 216     .await
 217   }
 218 }