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   generate_apub_endpoint,
  19   EndpointType,
  20   PostOrComment,
  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 = get_local_user_view_from_jwt(&data.auth, context.pool()).await?;
  44
  45     let content_slurs_removed = remove_slurs(&data.content.to_owned());
  46
  47     // Check for a community ban
  48     let post_id = data.post_id;
  49     let post = get_post(post_id, context.pool()).await?;
  50     let community_id = post.community_id;
  51
  52     check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
  53
  54     check_person_block(local_user_view.person.id, post.creator_id, context.pool()).await?;
  55
  56     // Check if post is locked, no new comments
  57     if post.locked {
  58       return Err(ApiError::err("locked").into());
  59     }
  60
  61     // If there's a parent_id, check to make sure that comment is in that post
  62     if let Some(parent_id) = data.parent_id {
  63       // Make sure the parent comment exists
  64       let parent = blocking(context.pool(), move |conn| Comment::read(conn, parent_id))
  65         .await?
  66         .map_err(|_| ApiError::err("couldnt_create_comment"))?;
  67
  68       check_person_block(local_user_view.person.id, parent.creator_id, context.pool()).await?;
  69
  70       // Strange issue where sometimes the post ID is incorrect
  71       if parent.post_id != post_id {
  72         return Err(ApiError::err("couldnt_create_comment").into());
  73       }
  74     }
  75
  76     let comment_form = CommentForm {
  77       content: content_slurs_removed,
  78       parent_id: data.parent_id.to_owned(),
  79       post_id: data.post_id,
  80       creator_id: local_user_view.person.id,
  81       ..CommentForm::default()
  82     };
  83
  84     // Create the comment
  85     let comment_form2 = comment_form.clone();
  86     let inserted_comment = blocking(context.pool(), move |conn| {
  87       Comment::create(conn, &comment_form2)
  88     })
  89     .await?
  90     .map_err(|_| ApiError::err("couldnt_create_comment"))?;
  91
  92     // Necessary to update the ap_id
  93     let inserted_comment_id = inserted_comment.id;
  94     let updated_comment: Comment =
  95       blocking(context.pool(), move |conn| -> Result<Comment, LemmyError> {
  96         let apub_id =
  97           generate_apub_endpoint(EndpointType::Comment, &inserted_comment_id.to_string())?;
  98         Ok(Comment::update_ap_id(conn, inserted_comment_id, apub_id)?)
  99       })
 100       .await?
 101       .map_err(|_| ApiError::err("couldnt_create_comment"))?;
 102
 103     CreateOrUpdateComment::send(
 104       &updated_comment,
 105       &local_user_view.person,
 106       CreateOrUpdateType::Create,
 107       context,
 108     )
 109     .await?;
 110
 111     // Scan the comment for user mentions, add those rows
 112     let post_id = post.id;
 113     let mentions = scrape_text_for_mentions(&comment_form.content);
 114     let recipient_ids = send_local_notifs(
 115       mentions,
 116       updated_comment.clone(),
 117       local_user_view.person.clone(),
 118       post,
 119       context.pool(),
 120       true,
 121     )
 122     .await?;
 123
 124     // You like your own comment by default
 125     let like_form = CommentLikeForm {
 126       comment_id: inserted_comment.id,
 127       post_id,
 128       person_id: local_user_view.person.id,
 129       score: 1,
 130     };
 131
 132     let like = move |conn: &'_ _| CommentLike::like(conn, &like_form);
 133     if blocking(context.pool(), like).await?.is_err() {
 134       return Err(ApiError::err("couldnt_like_comment").into());
 135     }
 136
 137     let object = PostOrComment::Comment(Box::new(updated_comment));
 138     Vote::send(
 139       &object,
 140       &local_user_view.person,
 141       community_id,
 142       VoteType::Like,
 143       context,
 144     )
 145     .await?;
 146
 147     let person_id = local_user_view.person.id;
 148     let comment_id = inserted_comment.id;
 149     let comment_view = blocking(context.pool(), move |conn| {
 150       CommentView::read(conn, comment_id, Some(person_id))
 151     })
 152     .await??;
 153
 154     // If its a comment to yourself, mark it as read
 155     if local_user_view.person.id == comment_view.get_recipient_id() {
 156       let comment_id = inserted_comment.id;
 157       blocking(context.pool(), move |conn| {
 158         Comment::update_read(conn, comment_id, true)
 159       })
 160       .await?
 161       .map_err(|_| ApiError::err("couldnt_update_comment"))?;
 162     }
 163
 164     send_comment_ws_message(
 165       inserted_comment.id,
 166       UserOperationCrud::CreateComment,
 167       websocket_id,
 168       data.form_id.to_owned(),
 169       Some(local_user_view.person.id),
 170       recipient_ids,
 171       context,
 172     )
 173     .await
 174   }
 175 }