crates/api_crud/src/post/update.rs

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