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_person_block,
   7   comment::*,
   8   get_local_user_view_from_jwt,
   9   get_post,
  10   send_local_notifs,
  11 };
  12 use lemmy_apub::{
  13   activities::{
  14     comment::create_or_update::CreateOrUpdateComment,
  15     voting::vote::{Vote, VoteType},
  16     CreateOrUpdateType,
  17   },
  18   fetcher::post_or_comment::PostOrComment,
  19   generate_apub_endpoint,
  20   EndpointType,
  21 };
  22 use lemmy_db_queries::{source::comment::Comment_, Crud, Likeable};
  23 use lemmy_db_schema::source::comment::*;
  24 use lemmy_db_views::comment_view::CommentView;
  25 use lemmy_utils::{
  26   utils::{remove_slurs, scrape_text_for_mentions},
  27   ApiError,
  28   ConnectionId,
  29   LemmyError,
  30 };
  31 use lemmy_websocket::{send::send_comment_ws_message, LemmyContext, UserOperationCrud};
  32
  33 #[async_trait::async_trait(?Send)]
  34 impl PerformCrud for CreateComment {
  35   type Response = CommentResponse;
  36
  37   async fn perform(
  38     &self,
  39     context: &Data<LemmyContext>,
  40     websocket_id: Option<ConnectionId>,
  41   ) -> Result<CommentResponse, LemmyError> {
  42     let data: &CreateComment = self;
  43     let local_user_view =
  44       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  45
  46     let content_slurs_removed =
  47       remove_slurs(&data.content.to_owned(), &context.settings().slur_regex());
  48
  49     // Check for a community ban
  50     let post_id = data.post_id;
  51     let post = get_post(post_id, context.pool()).await?;
  52     let community_id = post.community_id;
  53
  54     check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
  55
  56     check_person_block(local_user_view.person.id, post.creator_id, context.pool()).await?;
  57
  58     // Check if post is locked, no new comments
  59     if post.locked {
  60       return Err(ApiError::err("locked").into());
  61     }
  62
  63     // If there's a parent_id, check to make sure that comment is in that post
  64     if let Some(parent_id) = data.parent_id {
  65       // Make sure the parent comment exists
  66       let parent = blocking(context.pool(), move |conn| Comment::read(conn, parent_id))
  67         .await?
  68         .map_err(|_| ApiError::err("couldnt_create_comment"))?;
  69
  70       check_person_block(local_user_view.person.id, parent.creator_id, context.pool()).await?;
  71
  72       // Strange issue where sometimes the post ID is incorrect
  73       if parent.post_id != post_id {
  74         return Err(ApiError::err("couldnt_create_comment").into());
  75       }
  76     }
  77
  78     let comment_form = CommentForm {
  79       content: content_slurs_removed,
  80       parent_id: data.parent_id.to_owned(),
  81       post_id: data.post_id,
  82       creator_id: local_user_view.person.id,
  83       ..CommentForm::default()
  84     };
  85
  86     // Create the comment
  87     let comment_form2 = comment_form.clone();
  88     let inserted_comment = blocking(context.pool(), move |conn| {
  89       Comment::create(conn, &comment_form2)
  90     })
  91     .await?
  92     .map_err(|_| ApiError::err("couldnt_create_comment"))?;
  93
  94     // Necessary to update the ap_id
  95     let inserted_comment_id = inserted_comment.id;
  96     let protocol_and_hostname = context.settings().get_protocol_and_hostname();
  97
  98     let updated_comment: Comment =
  99       blocking(context.pool(), move |conn| -> Result<Comment, LemmyError> {
 100         let apub_id = generate_apub_endpoint(
 101           EndpointType::Comment,
 102           &inserted_comment_id.to_string(),
 103           &protocol_and_hostname,
 104         )?;
 105         Ok(Comment::update_ap_id(conn, inserted_comment_id, apub_id)?)
 106       })
 107       .await?
 108       .map_err(|_| ApiError::err("couldnt_create_comment"))?;
 109
 110     CreateOrUpdateComment::send(
 111       &updated_comment,
 112       &local_user_view.person,
 113       CreateOrUpdateType::Create,
 114       context,
 115     )
 116     .await?;
 117
 118     // Scan the comment for user mentions, add those rows
 119     let post_id = post.id;
 120     let mentions = scrape_text_for_mentions(&comment_form.content);
 121     let recipient_ids = send_local_notifs(
 122       mentions,
 123       updated_comment.clone(),
 124       local_user_view.person.clone(),
 125       post,
 126       context.pool(),
 127       true,
 128       &context.settings(),
 129     )
 130     .await?;
 131
 132     // You like your own comment by default
 133     let like_form = CommentLikeForm {
 134       comment_id: inserted_comment.id,
 135       post_id,
 136       person_id: local_user_view.person.id,
 137       score: 1,
 138     };
 139
 140     let like = move |conn: &'_ _| CommentLike::like(conn, &like_form);
 141     if blocking(context.pool(), like).await?.is_err() {
 142       return Err(ApiError::err("couldnt_like_comment").into());
 143     }
 144
 145     let object = PostOrComment::Comment(Box::new(updated_comment));
 146     Vote::send(
 147       &object,
 148       &local_user_view.person,
 149       community_id,
 150       VoteType::Like,
 151       context,
 152     )
 153     .await?;
 154
 155     let person_id = local_user_view.person.id;
 156     let comment_id = inserted_comment.id;
 157     let comment_view = blocking(context.pool(), move |conn| {
 158       CommentView::read(conn, comment_id, Some(person_id))
 159     })
 160     .await??;
 161
 162     // If its a comment to yourself, mark it as read
 163     if local_user_view.person.id == comment_view.get_recipient_id() {
 164       let comment_id = inserted_comment.id;
 165       blocking(context.pool(), move |conn| {
 166         Comment::update_read(conn, comment_id, true)
 167       })
 168       .await?
 169       .map_err(|_| ApiError::err("couldnt_update_comment"))?;
 170     }
 171
 172     send_comment_ws_message(
 173       inserted_comment.id,
 174       UserOperationCrud::CreateComment,
 175       websocket_id,
 176       data.form_id.to_owned(),
 177       Some(local_user_view.person.id),
 178       recipient_ids,
 179       context,
 180     )
 181     .await
 182   }
 183 }