crates/api_crud/src/post/create.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   blocking,
   5   check_community_ban,
   6   get_local_user_view_from_jwt,
   7   mark_post_as_read,
   8   post::*,
   9 };
  10 use lemmy_apub::{
  11   activities::post::create::CreatePost as CreateApubPost,
  12   generate_apub_endpoint,
  13   ApubLikeableType,
  14   EndpointType,
  15 };
  16 use lemmy_db_queries::{source::post::Post_, Crud, Likeable};
  17 use lemmy_db_schema::source::post::*;
  18 use lemmy_db_views::post_view::PostView;
  19 use lemmy_utils::{
  20   request::fetch_iframely_and_pictrs_data,
  21   utils::{check_slurs, check_slurs_opt, clean_url_params, is_valid_post_title},
  22   ApiError,
  23   ConnectionId,
  24   LemmyError,
  25 };
  26 use lemmy_websocket::{messages::SendPost, LemmyContext, UserOperationCrud};
  27
  28 #[async_trait::async_trait(?Send)]
  29 impl PerformCrud for CreatePost {
  30   type Response = PostResponse;
  31
  32   async fn perform(
  33     &self,
  34     context: &Data<LemmyContext>,
  35     websocket_id: Option<ConnectionId>,
  36   ) -> Result<PostResponse, LemmyError> {
  37     let data: &CreatePost = self;
  38     let local_user_view = get_local_user_view_from_jwt(&data.auth, context.pool()).await?;
  39
  40     check_slurs(&data.name)?;
  41     check_slurs_opt(&data.body)?;
  42
  43     if !is_valid_post_title(&data.name) {
  44       return Err(ApiError::err("invalid_post_title").into());
  45     }
  46
  47     check_community_ban(local_user_view.person.id, data.community_id, context.pool()).await?;
  48
  49     // Fetch Iframely and pictrs cached image
  50     let data_url = data.url.as_ref();
  51     let (iframely_title, iframely_description, iframely_html, pictrs_thumbnail) =
  52       fetch_iframely_and_pictrs_data(context.client(), data_url).await;
  53
  54     let post_form = PostForm {
  55       name: data.name.trim().to_owned(),
  56       url: data_url.map(|u| clean_url_params(u.to_owned()).into()),
  57       body: data.body.to_owned(),
  58       community_id: data.community_id,
  59       creator_id: local_user_view.person.id,
  60       nsfw: data.nsfw,
  61       embed_title: iframely_title,
  62       embed_description: iframely_description,
  63       embed_html: iframely_html,
  64       thumbnail_url: pictrs_thumbnail.map(|u| u.into()),
  65       ..PostForm::default()
  66     };
  67
  68     let inserted_post =
  69       match blocking(context.pool(), move |conn| Post::create(conn, &post_form)).await? {
  70         Ok(post) => post,
  71         Err(e) => {
  72           let err_type = if e.to_string() == "value too long for type character varying(200)" {
  73             "post_title_too_long"
  74           } else {
  75             "couldnt_create_post"
  76           };
  77
  78           return Err(ApiError::err(err_type).into());
  79         }
  80       };
  81
  82     let inserted_post_id = inserted_post.id;
  83     let updated_post = blocking(context.pool(), move |conn| -> Result<Post, LemmyError> {
  84       let apub_id = generate_apub_endpoint(EndpointType::Post, &inserted_post_id.to_string())?;
  85       Ok(Post::update_ap_id(conn, inserted_post_id, apub_id)?)
  86     })
  87     .await?
  88     .map_err(|_| ApiError::err("couldnt_create_post"))?;
  89
  90     CreateApubPost::send(&updated_post, &local_user_view.person, context).await?;
  91
  92     // They like their own post by default
  93     let person_id = local_user_view.person.id;
  94     let post_id = inserted_post.id;
  95     let like_form = PostLikeForm {
  96       post_id,
  97       person_id,
  98       score: 1,
  99     };
 100
 101     let like = move |conn: &'_ _| PostLike::like(conn, &like_form);
 102     if blocking(context.pool(), like).await?.is_err() {
 103       return Err(ApiError::err("couldnt_like_post").into());
 104     }
 105
 106     // Mark the post as read
 107     mark_post_as_read(person_id, post_id, context.pool()).await?;
 108
 109     updated_post
 110       .send_like(&local_user_view.person, context)
 111       .await?;
 112
 113     // Refetch the view
 114     let inserted_post_id = inserted_post.id;
 115     let post_view = blocking(context.pool(), move |conn| {
 116       PostView::read(conn, inserted_post_id, Some(local_user_view.person.id))
 117     })
 118     .await?
 119     .map_err(|_| ApiError::err("couldnt_find_post"))?;
 120
 121     let res = PostResponse { post_view };
 122
 123     context.chat_server().do_send(SendPost {
 124       op: UserOperationCrud::CreatePost,
 125       post: res.clone(),
 126       websocket_id,
 127     });
 128
 129     Ok(res)
 130   }
 131 }