crates/api_crud/src/post/update.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   post::{EditPost, PostResponse},
   5   request::fetch_site_data,
   6   utils::{
   7     blocking,
   8     check_community_ban,
   9     check_community_deleted_or_removed,
  10     get_local_user_view_from_jwt,
  11     local_site_to_slur_regex,
  12   },
  13 };
  14 use lemmy_apub::protocol::activities::{
  15   create_or_update::post::CreateOrUpdatePost,
  16   CreateOrUpdateType,
  17 };
  18 use lemmy_db_schema::{
  19   source::{
  20     actor_language::CommunityLanguage,
  21     local_site::LocalSite,
  22     post::{Post, PostUpdateForm},
  23   },
  24   traits::Crud,
  25   utils::diesel_option_overwrite,
  26 };
  27 use lemmy_utils::{
  28   error::LemmyError,
  29   utils::{check_slurs_opt, clean_url_params, is_valid_post_title},
  30   ConnectionId,
  31 };
  32 use lemmy_websocket::{send::send_post_ws_message, LemmyContext, UserOperationCrud};
  33
  34 #[async_trait::async_trait(?Send)]
  35 impl PerformCrud for EditPost {
  36   type Response = PostResponse;
  37
  38   #[tracing::instrument(skip(context, websocket_id))]
  39   async fn perform(
  40     &self,
  41     context: &Data<LemmyContext>,
  42     websocket_id: Option<ConnectionId>,
  43   ) -> Result<PostResponse, LemmyError> {
  44     let data: &EditPost = self;
  45     let local_user_view =
  46       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  47     let local_site = blocking(context.pool(), LocalSite::read).await??;
  48
  49     let data_url = data.url.as_ref();
  50
  51     // TODO No good way to handle a clear.
  52     // Issue link: https://github.com/LemmyNet/lemmy/issues/2287
  53     let url = Some(data_url.map(clean_url_params).map(Into::into));
  54     let body = diesel_option_overwrite(&data.body);
  55
  56     let slur_regex = local_site_to_slur_regex(&local_site);
  57     check_slurs_opt(&data.name, &slur_regex)?;
  58     check_slurs_opt(&data.body, &slur_regex)?;
  59
  60     if let Some(name) = &data.name {
  61       if !is_valid_post_title(name) {
  62         return Err(LemmyError::from_message("invalid_post_title"));
  63       }
  64     }
  65
  66     let post_id = data.post_id;
  67     let orig_post = blocking(context.pool(), move |conn| Post::read(conn, post_id)).await??;
  68
  69     check_community_ban(
  70       local_user_view.person.id,
  71       orig_post.community_id,
  72       context.pool(),
  73     )
  74     .await?;
  75     check_community_deleted_or_removed(orig_post.community_id, context.pool()).await?;
  76
  77     // Verify that only the creator can edit
  78     if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
  79       return Err(LemmyError::from_message("no_post_edit_allowed"));
  80     }
  81
  82     // Fetch post links and Pictrs cached image
  83     let data_url = data.url.as_ref();
  84     let (metadata_res, thumbnail_url) =
  85       fetch_site_data(context.client(), context.settings(), data_url).await;
  86     let (embed_title, embed_description, embed_video_url) = metadata_res
  87       .map(|u| (Some(u.title), Some(u.description), Some(u.embed_video_url)))
  88       .unwrap_or_default();
  89
  90     let language_id = self.language_id;
  91     blocking(context.pool(), move |conn| {
  92       CommunityLanguage::is_allowed_community_language(conn, language_id, orig_post.community_id)
  93     })
  94     .await??;
  95
  96     let post_form = PostUpdateForm::builder()
  97       .name(data.name.to_owned())
  98       .url(url)
  99       .body(body)
 100       .nsfw(data.nsfw)
 101       .embed_title(embed_title)
 102       .embed_description(embed_description)
 103       .embed_video_url(embed_video_url)
 104       .language_id(data.language_id)
 105       .thumbnail_url(Some(thumbnail_url))
 106       .build();
 107
 108     let post_id = data.post_id;
 109     let res = blocking(context.pool(), move |conn| {
 110       Post::update(conn, post_id, &post_form)
 111     })
 112     .await?;
 113     let updated_post: Post = match res {
 114       Ok(post) => post,
 115       Err(e) => {
 116         let err_type = if e.to_string() == "value too long for type character varying(200)" {
 117           "post_title_too_long"
 118         } else {
 119           "couldnt_update_post"
 120         };
 121
 122         return Err(LemmyError::from_error_message(e, err_type));
 123       }
 124     };
 125
 126     // Send apub update
 127     CreateOrUpdatePost::send(
 128       updated_post.into(),
 129       &local_user_view.person.clone().into(),
 130       CreateOrUpdateType::Update,
 131       context,
 132     )
 133     .await?;
 134
 135     send_post_ws_message(
 136       data.post_id,
 137       UserOperationCrud::EditPost,
 138       websocket_id,
 139       Some(local_user_view.person.id),
 140       context,
 141     )
 142     .await
 143   }
 144 }