crates/api_crud/src/post/update.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   blocking,
   5   check_community_ban,
   6   check_community_deleted_or_removed,
   7   get_local_user_view_from_jwt,
   8   post::*,
   9 };
  10 use lemmy_apub::activities::{post::create_or_update::CreateOrUpdatePost, CreateOrUpdateType};
  11 use lemmy_db_queries::{source::post::Post_, Crud};
  12 use lemmy_db_schema::{naive_now, source::post::*};
  13 use lemmy_utils::{
  14   request::fetch_site_data,
  15   utils::{check_slurs_opt, clean_url_params, is_valid_post_title},
  16   ApiError,
  17   ConnectionId,
  18   LemmyError,
  19 };
  20 use lemmy_websocket::{send::send_post_ws_message, LemmyContext, UserOperationCrud};
  21
  22 #[async_trait::async_trait(?Send)]
  23 impl PerformCrud for EditPost {
  24   type Response = PostResponse;
  25
  26   async fn perform(
  27     &self,
  28     context: &Data<LemmyContext>,
  29     websocket_id: Option<ConnectionId>,
  30   ) -> Result<PostResponse, LemmyError> {
  31     let data: &EditPost = self;
  32     let local_user_view =
  33       get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
  34
  35     let slur_regex = &context.settings().slur_regex();
  36     check_slurs_opt(&data.name, slur_regex)?;
  37     check_slurs_opt(&data.body, slur_regex)?;
  38
  39     if let Some(name) = &data.name {
  40       if !is_valid_post_title(name) {
  41         return Err(ApiError::err_plain("invalid_post_title").into());
  42       }
  43     }
  44
  45     let post_id = data.post_id;
  46     let orig_post = blocking(context.pool(), move |conn| Post::read(conn, post_id)).await??;
  47
  48     check_community_ban(
  49       local_user_view.person.id,
  50       orig_post.community_id,
  51       context.pool(),
  52     )
  53     .await?;
  54     check_community_deleted_or_removed(orig_post.community_id, context.pool()).await?;
  55
  56     // Verify that only the creator can edit
  57     if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
  58       return Err(ApiError::err_plain("no_post_edit_allowed").into());
  59     }
  60
  61     // Fetch post links and Pictrs cached image
  62     let data_url = data.url.as_ref();
  63     let (metadata_res, pictrs_thumbnail) =
  64       fetch_site_data(context.client(), &context.settings(), data_url).await;
  65     let (embed_title, embed_description, embed_html) = metadata_res
  66       .map(|u| (u.title, u.description, u.html))
  67       .unwrap_or((None, None, None));
  68
  69     let post_form = PostForm {
  70       creator_id: orig_post.creator_id.to_owned(),
  71       community_id: orig_post.community_id,
  72       name: data.name.to_owned().unwrap_or(orig_post.name),
  73       url: data_url.map(|u| clean_url_params(u.to_owned()).into()),
  74       body: data.body.to_owned(),
  75       nsfw: data.nsfw,
  76       updated: Some(naive_now()),
  77       embed_title,
  78       embed_description,
  79       embed_html,
  80       thumbnail_url: pictrs_thumbnail.map(|u| u.into()),
  81       ..PostForm::default()
  82     };
  83
  84     let post_id = data.post_id;
  85     let res = blocking(context.pool(), move |conn| {
  86       Post::update(conn, post_id, &post_form)
  87     })
  88     .await?;
  89     let updated_post: Post = match res {
  90       Ok(post) => post,
  91       Err(e) => {
  92         let err_type = if e.to_string() == "value too long for type character varying(200)" {
  93           "post_title_too_long"
  94         } else {
  95           "couldnt_update_post"
  96         };
  97
  98         return Err(ApiError::err(err_type, e).into());
  99       }
 100     };
 101
 102     // Send apub update
 103     CreateOrUpdatePost::send(
 104       &updated_post,
 105       &local_user_view.person,
 106       CreateOrUpdateType::Update,
 107       context,
 108     )
 109     .await?;
 110
 111     send_post_ws_message(
 112       data.post_id,
 113       UserOperationCrud::EditPost,
 114       websocket_id,
 115       Some(local_user_view.person.id),
 116       context,
 117     )
 118     .await
 119   }
 120 }