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_schema::{
  25   source::{
  26     comment::{Comment, CommentForm, CommentLike, CommentLikeForm},
  27     person_mention::PersonMention,
  28   },
  29   traits::{Crud, Likeable},
  30 };
  31 use lemmy_db_views::comment_view::CommentView;
  32 use lemmy_utils::{
  33   utils::{remove_slurs, scrape_text_for_mentions},
  34   ApiError,
  35   ConnectionId,
  36   LemmyError,
  37 };
  38 use lemmy_websocket::{send::send_comment_ws_message, LemmyContext, UserOperationCrud};
  39
  40 #[async_trait::async_trait(?Send)]
  41 impl PerformCrud for CreateComment {
  42   type Response = CommentResponse;
  43
  44   async fn perform(
  45     &self,
  46     context: &Data<LemmyContext>,
  47     websocket_id: Option<ConnectionId>,
  48   ) -> Result<CommentResponse, LemmyError> {
  49     let data: &CreateComment = self;
  50     let local_user_view =
  51       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  52
  53     let content_slurs_removed =
  54       remove_slurs(&data.content.to_owned(), &context.settings().slur_regex());
  55
  56     // Check for a community ban
  57     let post_id = data.post_id;
  58     let post = get_post(post_id, context.pool()).await?;
  59     let community_id = post.community_id;
  60
  61     check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
  62     check_community_deleted_or_removed(community_id, context.pool()).await?;
  63     check_post_deleted_or_removed(&post)?;
  64
  65     check_person_block(local_user_view.person.id, post.creator_id, context.pool()).await?;
  66
  67     // Check if post is locked, no new comments
  68     if post.locked {
  69       return Err(ApiError::err_plain("locked").into());
  70     }
  71
  72     // If there's a parent_id, check to make sure that comment is in that post
  73     if let Some(parent_id) = data.parent_id {
  74       // Make sure the parent comment exists
  75       let parent = blocking(context.pool(), move |conn| Comment::read(conn, parent_id))
  76         .await?
  77         .map_err(|e| ApiError::err("couldnt_create_comment", e))?;
  78
  79       check_person_block(local_user_view.person.id, parent.creator_id, context.pool()).await?;
  80
  81       // Strange issue where sometimes the post ID is incorrect
  82       if parent.post_id != post_id {
  83         return Err(ApiError::err_plain("couldnt_create_comment").into());
  84       }
  85     }
  86
  87     let comment_form = CommentForm {
  88       content: content_slurs_removed,
  89       parent_id: data.parent_id.to_owned(),
  90       post_id: data.post_id,
  91       creator_id: local_user_view.person.id,
  92       ..CommentForm::default()
  93     };
  94
  95     // Create the comment
  96     let comment_form2 = comment_form.clone();
  97     let inserted_comment = blocking(context.pool(), move |conn| {
  98       Comment::create(conn, &comment_form2)
  99     })
 100     .await?
 101     .map_err(|e| ApiError::err("couldnt_create_comment", e))?;
 102
 103     // Necessary to update the ap_id
 104     let inserted_comment_id = inserted_comment.id;
 105     let protocol_and_hostname = context.settings().get_protocol_and_hostname();
 106
 107     let updated_comment: Comment =
 108       blocking(context.pool(), move |conn| -> Result<Comment, LemmyError> {
 109         let apub_id = generate_apub_endpoint(
 110           EndpointType::Comment,
 111           &inserted_comment_id.to_string(),
 112           &protocol_and_hostname,
 113         )?;
 114         Ok(Comment::update_ap_id(conn, inserted_comment_id, apub_id)?)
 115       })
 116       .await?
 117       .map_err(|e| ApiError::err("couldnt_create_comment", e))?;
 118
 119     CreateOrUpdateComment::send(
 120       &updated_comment,
 121       &local_user_view.person,
 122       CreateOrUpdateType::Create,
 123       context,
 124     )
 125     .await?;
 126
 127     // Scan the comment for user mentions, add those rows
 128     let post_id = post.id;
 129     let mentions = scrape_text_for_mentions(&comment_form.content);
 130     let recipient_ids = send_local_notifs(
 131       mentions,
 132       updated_comment.clone(),
 133       local_user_view.person.clone(),
 134       post,
 135       context.pool(),
 136       true,
 137       &context.settings(),
 138     )
 139     .await?;
 140
 141     // You like your own comment by default
 142     let like_form = CommentLikeForm {
 143       comment_id: inserted_comment.id,
 144       post_id,
 145       person_id: local_user_view.person.id,
 146       score: 1,
 147     };
 148
 149     let like = move |conn: &'_ _| CommentLike::like(conn, &like_form);
 150     blocking(context.pool(), like)
 151       .await?
 152       .map_err(|e| ApiError::err("couldnt_like_comment", e))?;
 153
 154     let object = PostOrComment::Comment(updated_comment);
 155     Vote::send(
 156       &object,
 157       &local_user_view.person,
 158       community_id,
 159       VoteType::Like,
 160       context,
 161     )
 162     .await?;
 163
 164     let person_id = local_user_view.person.id;
 165     let comment_id = inserted_comment.id;
 166     let comment_view = blocking(context.pool(), move |conn| {
 167       CommentView::read(conn, comment_id, Some(person_id))
 168     })
 169     .await??;
 170
 171     // If its a comment to yourself, mark it as read
 172     if local_user_view.person.id == comment_view.get_recipient_id() {
 173       let comment_id = inserted_comment.id;
 174       blocking(context.pool(), move |conn| {
 175         Comment::update_read(conn, comment_id, true)
 176       })
 177       .await?
 178       .map_err(|e| ApiError::err("couldnt_update_comment", e))?;
 179     }
 180     // If its a reply, mark the parent as read
 181     if let Some(parent_id) = data.parent_id {
 182       let parent_comment = blocking(context.pool(), move |conn| {
 183         CommentView::read(conn, parent_id, Some(person_id))
 184       })
 185       .await??;
 186       if local_user_view.person.id == parent_comment.get_recipient_id() {
 187         blocking(context.pool(), move |conn| {
 188           Comment::update_read(conn, parent_id, true)
 189         })
 190         .await?
 191         .map_err(|e| ApiError::err("couldnt_update_parent_comment", e))?;
 192       }
 193       // If the parent has PersonMentions mark them as read too
 194       let person_id = local_user_view.person.id;
 195       let person_mention = blocking(context.pool(), move |conn| {
 196         PersonMention::read_by_comment_and_person(conn, parent_id, person_id)
 197       })
 198       .await?;
 199       if let Ok(mention) = person_mention {
 200         blocking(context.pool(), move |conn| {
 201           PersonMention::update_read(conn, mention.id, true)
 202         })
 203         .await?
 204         .map_err(|e| ApiError::err("couldnt_update_person_mentions", e))?;
 205       }
 206     }
 207
 208     send_comment_ws_message(
 209       inserted_comment.id,
 210       UserOperationCrud::CreateComment,
 211       websocket_id,
 212       data.form_id.to_owned(),
 213       Some(local_user_view.person.id),
 214       recipient_ids,
 215       context,
 216     )
 217     .await
 218   }
 219 }