lemmy/crates/api_crud/src/post/create.rs

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use crate::PerformCrud;
use actix_web::web::Data;
use lemmy_api_common::{blocking, check_community_ban, get_local_user_view_from_jwt, post::*};
use lemmy_apub::{generate_apub_endpoint, ApubLikeableType, ApubObjectType, EndpointType};
use lemmy_db_queries::{source::post::Post_, Crud, Likeable};
use lemmy_db_schema::source::post::*;
use lemmy_db_views::post_view::PostView;
use lemmy_utils::{
request::fetch_iframely_and_pictrs_data,
utils::{check_slurs, check_slurs_opt, is_valid_post_title},
ApiError,
ConnectionId,
LemmyError,
};
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use lemmy_websocket::{messages::SendPost, LemmyContext, UserOperationCrud};
#[async_trait::async_trait(?Send)]
impl PerformCrud for CreatePost {
type Response = PostResponse;
async fn perform(
&self,
context: &Data<LemmyContext>,
websocket_id: Option<ConnectionId>,
) -> Result<PostResponse, LemmyError> {
let data: &CreatePost = &self;
let local_user_view = get_local_user_view_from_jwt(&data.auth, context.pool()).await?;
check_slurs(&data.name)?;
check_slurs_opt(&data.body)?;
if !is_valid_post_title(&data.name) {
return Err(ApiError::err("invalid_post_title").into());
}
check_community_ban(local_user_view.person.id, data.community_id, context.pool()).await?;
// Fetch Iframely and pictrs cached image
let data_url = data.url.as_ref();
let (iframely_title, iframely_description, iframely_html, pictrs_thumbnail) =
fetch_iframely_and_pictrs_data(context.client(), data_url).await;
let post_form = PostForm {
name: data.name.trim().to_owned(),
url: data_url.map(|u| u.to_owned().into()),
body: data.body.to_owned(),
community_id: data.community_id,
creator_id: local_user_view.person.id,
nsfw: data.nsfw,
embed_title: iframely_title,
embed_description: iframely_description,
embed_html: iframely_html,
thumbnail_url: pictrs_thumbnail.map(|u| u.into()),
..PostForm::default()
};
let inserted_post =
match blocking(context.pool(), move |conn| Post::create(conn, &post_form)).await? {
Ok(post) => post,
Err(e) => {
let err_type = if e.to_string() == "value too long for type character varying(200)" {
"post_title_too_long"
} else {
"couldnt_create_post"
};
return Err(ApiError::err(err_type).into());
}
};
let inserted_post_id = inserted_post.id;
let updated_post = match blocking(context.pool(), move |conn| -> Result<Post, LemmyError> {
let apub_id = generate_apub_endpoint(EndpointType::Post, &inserted_post_id.to_string())?;
Ok(Post::update_ap_id(conn, inserted_post_id, apub_id)?)
})
.await?
{
Ok(post) => post,
Err(_e) => return Err(ApiError::err("couldnt_create_post").into()),
};
updated_post
.send_create(&local_user_view.person, context)
.await?;
// They like their own post by default
let like_form = PostLikeForm {
post_id: inserted_post.id,
person_id: local_user_view.person.id,
score: 1,
};
let like = move |conn: &'_ _| PostLike::like(conn, &like_form);
if blocking(context.pool(), like).await?.is_err() {
return Err(ApiError::err("couldnt_like_post").into());
}
updated_post
.send_like(&local_user_view.person, context)
.await?;
// Refetch the view
let inserted_post_id = inserted_post.id;
let post_view = match blocking(context.pool(), move |conn| {
PostView::read(conn, inserted_post_id, Some(local_user_view.person.id))
})
.await?
{
Ok(post) => post,
Err(_e) => return Err(ApiError::err("couldnt_find_post").into()),
};
let res = PostResponse { post_view };
context.chat_server().do_send(SendPost {
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op: UserOperationCrud::CreatePost,
post: res.clone(),
websocket_id,
});
Ok(res)
}
}