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