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::{
  12     post::create_or_update::CreateOrUpdatePost,
  13     voting::vote::{Vote, VoteType},
  14     CreateOrUpdateType,
  15   },
  16   generate_apub_endpoint,
  17   EndpointType,
  18   PostOrComment,
  19 };
  20 use lemmy_db_queries::{source::post::Post_, Crud, Likeable};
  21 use lemmy_db_schema::source::post::*;
  22 use lemmy_utils::{
  23   request::fetch_iframely_and_pictrs_data,
  24   utils::{check_slurs, check_slurs_opt, clean_url_params, is_valid_post_title},
  25   ApiError,
  26   ConnectionId,
  27   LemmyError,
  28 };
  29 use lemmy_websocket::{send::send_post_ws_message, LemmyContext, UserOperationCrud};
  30
  31 #[async_trait::async_trait(?Send)]
  32 impl PerformCrud for CreatePost {
  33   type Response = PostResponse;
  34
  35   async fn perform(
  36     &self,
  37     context: &Data<LemmyContext>,
  38     websocket_id: Option<ConnectionId>,
  39   ) -> Result<PostResponse, LemmyError> {
  40     let data: &CreatePost = self;
  41     let local_user_view = get_local_user_view_from_jwt(&data.auth, context.pool()).await?;
  42
  43     check_slurs(&data.name)?;
  44     check_slurs_opt(&data.body)?;
  45
  46     if !is_valid_post_title(&data.name) {
  47       return Err(ApiError::err("invalid_post_title").into());
  48     }
  49
  50     check_community_ban(local_user_view.person.id, data.community_id, context.pool()).await?;
  51
  52     // Fetch Iframely and pictrs cached image
  53     let data_url = data.url.as_ref();
  54     let (iframely_response, pictrs_thumbnail) =
  55       fetch_iframely_and_pictrs_data(context.client(), data_url).await?;
  56     let (embed_title, embed_description, embed_html) = iframely_response
  57       .map(|u| (u.title, u.description, u.html))
  58       .unwrap_or((None, None, None));
  59
  60     let post_form = PostForm {
  61       name: data.name.trim().to_owned(),
  62       url: data_url.map(|u| clean_url_params(u.to_owned()).into()),
  63       body: data.body.to_owned(),
  64       community_id: data.community_id,
  65       creator_id: local_user_view.person.id,
  66       nsfw: data.nsfw,
  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 inserted_post =
  75       match blocking(context.pool(), move |conn| Post::create(conn, &post_form)).await? {
  76         Ok(post) => post,
  77         Err(e) => {
  78           let err_type = if e.to_string() == "value too long for type character varying(200)" {
  79             "post_title_too_long"
  80           } else {
  81             "couldnt_create_post"
  82           };
  83
  84           return Err(ApiError::err(err_type).into());
  85         }
  86       };
  87
  88     let inserted_post_id = inserted_post.id;
  89     let updated_post = blocking(context.pool(), move |conn| -> Result<Post, LemmyError> {
  90       let apub_id = generate_apub_endpoint(EndpointType::Post, &inserted_post_id.to_string())?;
  91       Ok(Post::update_ap_id(conn, inserted_post_id, apub_id)?)
  92     })
  93     .await?
  94     .map_err(|_| ApiError::err("couldnt_create_post"))?;
  95
  96     CreateOrUpdatePost::send(
  97       &updated_post,
  98       &local_user_view.person,
  99       CreateOrUpdateType::Create,
 100       context,
 101     )
 102     .await?;
 103
 104     // They like their own post by default
 105     let person_id = local_user_view.person.id;
 106     let post_id = inserted_post.id;
 107     let like_form = PostLikeForm {
 108       post_id,
 109       person_id,
 110       score: 1,
 111     };
 112
 113     let like = move |conn: &'_ _| PostLike::like(conn, &like_form);
 114     if blocking(context.pool(), like).await?.is_err() {
 115       return Err(ApiError::err("couldnt_like_post").into());
 116     }
 117
 118     // Mark the post as read
 119     mark_post_as_read(person_id, post_id, context.pool()).await?;
 120
 121     let object = PostOrComment::Post(Box::new(updated_post));
 122     Vote::send(
 123       &object,
 124       &local_user_view.person,
 125       inserted_post.community_id,
 126       VoteType::Like,
 127       context,
 128     )
 129     .await?;
 130
 131     send_post_ws_message(
 132       inserted_post.id,
 133       UserOperationCrud::CreatePost,
 134       websocket_id,
 135       Some(local_user_view.person.id),
 136       context,
 137     )
 138     .await
 139   }
 140 }