crates/api/src/comment/like.rs

   1 use activitypub_federation::config::Data;
   2 use actix_web::web::Json;
   3 use lemmy_api_common::{
   4   build_response::build_comment_response,
   5   comment::{CommentResponse, CreateCommentLike},
   6   context::LemmyContext,
   7   send_activity::{ActivityChannel, SendActivityData},
   8   utils::{check_community_ban, check_downvotes_enabled, local_user_view_from_jwt},
   9 };
  10 use lemmy_db_schema::{
  11   newtypes::LocalUserId,
  12   source::{
  13     comment::{CommentLike, CommentLikeForm},
  14     comment_reply::CommentReply,
  15     local_site::LocalSite,
  16   },
  17   traits::Likeable,
  18 };
  19 use lemmy_db_views::structs::{CommentView, LocalUserView};
  20 use lemmy_utils::error::{LemmyError, LemmyErrorExt, LemmyErrorType};
  21 use std::ops::Deref;
  22
  23 #[tracing::instrument(skip(context))]
  24 pub async fn like_comment(
  25   data: Json<CreateCommentLike>,
  26   context: Data<LemmyContext>,
  27 ) -> Result<Json<CommentResponse>, LemmyError> {
  28   let local_site = LocalSite::read(&mut context.pool()).await?;
  29   let local_user_view = local_user_view_from_jwt(&data.auth, &context).await?;
  30
  31   let mut recipient_ids = Vec::<LocalUserId>::new();
  32
  33   // Don't do a downvote if site has downvotes disabled
  34   check_downvotes_enabled(data.score, &local_site)?;
  35
  36   let comment_id = data.comment_id;
  37   let orig_comment = CommentView::read(&mut context.pool(), comment_id, None).await?;
  38
  39   check_community_ban(
  40     local_user_view.person.id,
  41     orig_comment.community.id,
  42     &mut context.pool(),
  43   )
  44   .await?;
  45
  46   // Add parent poster or commenter to recipients
  47   let comment_reply = CommentReply::read_by_comment(&mut context.pool(), comment_id).await;
  48   if let Ok(reply) = comment_reply {
  49     let recipient_id = reply.recipient_id;
  50     if let Ok(local_recipient) = LocalUserView::read_person(&mut context.pool(), recipient_id).await
  51     {
  52       recipient_ids.push(local_recipient.local_user.id);
  53     }
  54   }
  55
  56   let like_form = CommentLikeForm {
  57     comment_id: data.comment_id,
  58     post_id: orig_comment.post.id,
  59     person_id: local_user_view.person.id,
  60     score: data.score,
  61   };
  62
  63   // Remove any likes first
  64   let person_id = local_user_view.person.id;
  65
  66   CommentLike::remove(&mut context.pool(), person_id, comment_id).await?;
  67
  68   // Only add the like if the score isnt 0
  69   let do_add = like_form.score != 0 && (like_form.score == 1 || like_form.score == -1);
  70   if do_add {
  71     CommentLike::like(&mut context.pool(), &like_form)
  72       .await
  73       .with_lemmy_type(LemmyErrorType::CouldntLikeComment)?;
  74   }
  75
  76   ActivityChannel::submit_activity(
  77     SendActivityData::LikePostOrComment(
  78       orig_comment.comment.ap_id,
  79       local_user_view.person.clone(),
  80       orig_comment.community,
  81       data.score,
  82     ),
  83     &context,
  84   )
  85   .await?;
  86
  87   Ok(Json(
  88     build_comment_response(
  89       context.deref(),
  90       comment_id,
  91       Some(local_user_view),
  92       None,
  93       recipient_ids,
  94     )
  95     .await?,
  96   ))
  97 }