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