crates/api_crud/src/post/update.rs

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