crates/api_crud/src/post/update.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   build_response::build_post_response,
   5   context::LemmyContext,
   6   post::{EditPost, PostResponse},
   7   request::fetch_site_data,
   8   utils::{check_community_ban, local_site_to_slur_regex, local_user_view_from_jwt},
   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, LemmyErrorExt, LemmyErrorType},
  21   utils::{
  22     slurs::check_slurs_opt,
  23     validation::{check_url_scheme, clean_url_params, is_valid_body_field, is_valid_post_title},
  24   },
  25 };
  26
  27 #[async_trait::async_trait(?Send)]
  28 impl PerformCrud for EditPost {
  29   type Response = PostResponse;
  30
  31   #[tracing::instrument(skip(context))]
  32   async fn perform(&self, context: &Data<LemmyContext>) -> Result<PostResponse, LemmyError> {
  33     let data: &EditPost = self;
  34     let local_user_view = local_user_view_from_jwt(&data.auth, context).await?;
  35     let local_site = LocalSite::read(&mut context.pool()).await?;
  36
  37     let data_url = data.url.as_ref();
  38
  39     // TODO No good way to handle a clear.
  40     // Issue link: https://github.com/LemmyNet/lemmy/issues/2287
  41     let url = Some(data_url.map(clean_url_params).map(Into::into));
  42     let body = diesel_option_overwrite(&data.body);
  43
  44     let slur_regex = local_site_to_slur_regex(&local_site);
  45     check_slurs_opt(&data.name, &slur_regex)?;
  46     check_slurs_opt(&data.body, &slur_regex)?;
  47
  48     if let Some(name) = &data.name {
  49       is_valid_post_title(name)?;
  50     }
  51
  52     is_valid_body_field(&data.body, true)?;
  53     check_url_scheme(&data.url)?;
  54
  55     let post_id = data.post_id;
  56     let orig_post = Post::read(&mut context.pool(), post_id).await?;
  57
  58     check_community_ban(
  59       local_user_view.person.id,
  60       orig_post.community_id,
  61       &mut context.pool(),
  62     )
  63     .await?;
  64
  65     // Verify that only the creator can edit
  66     if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
  67       return Err(LemmyErrorType::NoPostEditAllowed)?;
  68     }
  69
  70     // Fetch post links and Pictrs cached image
  71     let data_url = data.url.as_ref();
  72     let (metadata_res, thumbnail_url) =
  73       fetch_site_data(context.client(), context.settings(), data_url, true).await;
  74     let (embed_title, embed_description, embed_video_url) = metadata_res
  75       .map(|u| (Some(u.title), Some(u.description), Some(u.embed_video_url)))
  76       .unwrap_or_default();
  77
  78     let language_id = self.language_id;
  79     CommunityLanguage::is_allowed_community_language(
  80       &mut context.pool(),
  81       language_id,
  82       orig_post.community_id,
  83     )
  84     .await?;
  85
  86     let post_form = PostUpdateForm::builder()
  87       .name(data.name.clone())
  88       .url(url)
  89       .body(body)
  90       .nsfw(data.nsfw)
  91       .embed_title(embed_title)
  92       .embed_description(embed_description)
  93       .embed_video_url(embed_video_url)
  94       .language_id(data.language_id)
  95       .thumbnail_url(Some(thumbnail_url))
  96       .updated(Some(Some(naive_now())))
  97       .build();
  98
  99     let post_id = data.post_id;
 100     Post::update(&mut context.pool(), post_id, &post_form)
 101       .await
 102       .with_lemmy_type(LemmyErrorType::CouldntUpdatePost)?;
 103
 104     build_post_response(
 105       context,
 106       orig_post.community_id,
 107       local_user_view.person.id,
 108       post_id,
 109     )
 110     .await
 111   }
 112 }