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