crates/api_crud/src/comment/create.rs

   1 use actix_web::web::Data;
   2
   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 };
  13 use lemmy_apub::{
  14   fetcher::post_or_comment::PostOrComment,
  15   generate_local_apub_endpoint,
  16   protocol::activities::{
  17     create_or_update::comment::CreateOrUpdateComment,
  18     voting::vote::{Vote, VoteType},
  19     CreateOrUpdateType,
  20   },
  21   EndpointType,
  22 };
  23 use lemmy_db_schema::{
  24   source::{
  25     comment::{Comment, CommentForm, CommentLike, CommentLikeForm},
  26     person_mention::PersonMention,
  27   },
  28   traits::{Crud, Likeable},
  29 };
  30 use lemmy_db_views::comment_view::CommentView;
  31 use lemmy_utils::{
  32   utils::{remove_slurs, scrape_text_for_mentions},
  33   ApiError,
  34   ConnectionId,
  35   LemmyError,
  36 };
  37 use lemmy_websocket::{
  38   send::{send_comment_ws_message, send_local_notifs},
  39   LemmyContext,
  40   UserOperationCrud,
  41 };
  42
  43 use crate::PerformCrud;
  44
  45 #[async_trait::async_trait(?Send)]
  46 impl PerformCrud for CreateComment {
  47   type Response = CommentResponse;
  48
  49   async fn perform(
  50     &self,
  51     context: &Data<LemmyContext>,
  52     websocket_id: Option<ConnectionId>,
  53   ) -> Result<CommentResponse, LemmyError> {
  54     let data: &CreateComment = self;
  55     let local_user_view =
  56       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  57
  58     let content_slurs_removed =
  59       remove_slurs(&data.content.to_owned(), &context.settings().slur_regex());
  60
  61     // Check for a community ban
  62     let post_id = data.post_id;
  63     let post = get_post(post_id, context.pool()).await?;
  64     let community_id = post.community_id;
  65
  66     check_community_ban(local_user_view.person.id, community_id, context.pool()).await?;
  67     check_community_deleted_or_removed(community_id, context.pool()).await?;
  68     check_post_deleted_or_removed(&post)?;
  69
  70     check_person_block(local_user_view.person.id, post.creator_id, context.pool()).await?;
  71
  72     // Check if post is locked, no new comments
  73     if post.locked {
  74       return Err(ApiError::err_plain("locked").into());
  75     }
  76
  77     // If there's a parent_id, check to make sure that comment is in that post
  78     if let Some(parent_id) = data.parent_id {
  79       // Make sure the parent comment exists
  80       let parent = blocking(context.pool(), move |conn| Comment::read(conn, parent_id))
  81         .await?
  82         .map_err(|e| ApiError::err("couldnt_create_comment", e))?;
  83
  84       check_person_block(local_user_view.person.id, parent.creator_id, context.pool()).await?;
  85
  86       // Strange issue where sometimes the post ID is incorrect
  87       if parent.post_id != post_id {
  88         return Err(ApiError::err_plain("couldnt_create_comment").into());
  89       }
  90     }
  91
  92     let comment_form = CommentForm {
  93       content: content_slurs_removed,
  94       parent_id: data.parent_id.to_owned(),
  95       post_id: data.post_id,
  96       creator_id: local_user_view.person.id,
  97       ..CommentForm::default()
  98     };
  99
 100     // Create the comment
 101     let comment_form2 = comment_form.clone();
 102     let inserted_comment = blocking(context.pool(), move |conn| {
 103       Comment::create(conn, &comment_form2)
 104     })
 105     .await?
 106     .map_err(|e| ApiError::err("couldnt_create_comment", e))?;
 107
 108     // Necessary to update the ap_id
 109     let inserted_comment_id = inserted_comment.id;
 110     let protocol_and_hostname = context.settings().get_protocol_and_hostname();
 111
 112     let updated_comment: Comment =
 113       blocking(context.pool(), move |conn| -> Result<Comment, LemmyError> {
 114         let apub_id = generate_local_apub_endpoint(
 115           EndpointType::Comment,
 116           &inserted_comment_id.to_string(),
 117           &protocol_and_hostname,
 118         )?;
 119         Ok(Comment::update_ap_id(conn, inserted_comment_id, apub_id)?)
 120       })
 121       .await?
 122       .map_err(|e| ApiError::err("couldnt_create_comment", e))?;
 123
 124     CreateOrUpdateComment::send(
 125       &updated_comment.clone().into(),
 126       &local_user_view.person.clone().into(),
 127       CreateOrUpdateType::Create,
 128       context,
 129     )
 130     .await?;
 131
 132     // Scan the comment for user mentions, add those rows
 133     let post_id = post.id;
 134     let mentions = scrape_text_for_mentions(&comment_form.content);
 135     let recipient_ids = send_local_notifs(
 136       mentions,
 137       &updated_comment,
 138       &local_user_view.person,
 139       &post,
 140       true,
 141       context,
 142     )
 143     .await?;
 144
 145     // You like your own comment by default
 146     let like_form = CommentLikeForm {
 147       comment_id: inserted_comment.id,
 148       post_id,
 149       person_id: local_user_view.person.id,
 150       score: 1,
 151     };
 152
 153     let like = move |conn: &'_ _| CommentLike::like(conn, &like_form);
 154     blocking(context.pool(), like)
 155       .await?
 156       .map_err(|e| ApiError::err("couldnt_like_comment", e))?;
 157
 158     let object = PostOrComment::Comment(updated_comment.into());
 159     Vote::send(
 160       &object,
 161       &local_user_view.person.clone().into(),
 162       community_id,
 163       VoteType::Like,
 164       context,
 165     )
 166     .await?;
 167
 168     let person_id = local_user_view.person.id;
 169     let comment_id = inserted_comment.id;
 170     let comment_view = blocking(context.pool(), move |conn| {
 171       CommentView::read(conn, comment_id, Some(person_id))
 172     })
 173     .await??;
 174
 175     // If its a comment to yourself, mark it as read
 176     if local_user_view.person.id == comment_view.get_recipient_id() {
 177       let comment_id = inserted_comment.id;
 178       blocking(context.pool(), move |conn| {
 179         Comment::update_read(conn, comment_id, true)
 180       })
 181       .await?
 182       .map_err(|e| ApiError::err("couldnt_update_comment", e))?;
 183     }
 184     // If its a reply, mark the parent as read
 185     if let Some(parent_id) = data.parent_id {
 186       let parent_comment = blocking(context.pool(), move |conn| {
 187         CommentView::read(conn, parent_id, Some(person_id))
 188       })
 189       .await??;
 190       if local_user_view.person.id == parent_comment.get_recipient_id() {
 191         blocking(context.pool(), move |conn| {
 192           Comment::update_read(conn, parent_id, true)
 193         })
 194         .await?
 195         .map_err(|e| ApiError::err("couldnt_update_parent_comment", e))?;
 196       }
 197       // If the parent has PersonMentions mark them as read too
 198       let person_id = local_user_view.person.id;
 199       let person_mention = blocking(context.pool(), move |conn| {
 200         PersonMention::read_by_comment_and_person(conn, parent_id, person_id)
 201       })
 202       .await?;
 203       if let Ok(mention) = person_mention {
 204         blocking(context.pool(), move |conn| {
 205           PersonMention::update_read(conn, mention.id, true)
 206         })
 207         .await?
 208         .map_err(|e| ApiError::err("couldnt_update_person_mentions", e))?;
 209       }
 210     }
 211
 212     send_comment_ws_message(
 213       inserted_comment.id,
 214       UserOperationCrud::CreateComment,
 215       websocket_id,
 216       data.form_id.to_owned(),
 217       Some(local_user_view.person.id),
 218       recipient_ids,
 219       context,
 220     )
 221     .await
 222   }
 223 }