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

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use actix_web::web::Data;
use lemmy_api_common::{
post::{EditPost, PostResponse},
request::fetch_site_data,
utils::{
blocking,
check_community_ban,
check_community_deleted_or_removed,
get_local_user_view_from_jwt,
},
};
use lemmy_apub::protocol::activities::{
create_or_update::post::CreateOrUpdatePost,
CreateOrUpdateType,
};
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use lemmy_db_schema::{
source::{
language::Language,
post::{Post, PostForm},
},
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traits::Crud,
utils::{diesel_option_overwrite, naive_now},
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};
use lemmy_utils::{
error::LemmyError,
utils::{check_slurs_opt, clean_url_params, is_valid_post_title},
ConnectionId,
};
use lemmy_websocket::{send::send_post_ws_message, LemmyContext, UserOperationCrud};
use crate::PerformCrud;
#[async_trait::async_trait(?Send)]
impl PerformCrud for EditPost {
type Response = PostResponse;
#[tracing::instrument(skip(context, websocket_id))]
async fn perform(
&self,
context: &Data<LemmyContext>,
websocket_id: Option<ConnectionId>,
) -> Result<PostResponse, LemmyError> {
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let data: &EditPost = self;
let local_user_view =
get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
let data_url = data.url.as_ref();
// TODO No good way to handle a clear.
// Issue link: https://github.com/LemmyNet/lemmy/issues/2287
let url = Some(data_url.map(clean_url_params).map(Into::into));
let body = diesel_option_overwrite(&data.body);
let slur_regex = &context.settings().slur_regex();
check_slurs_opt(&data.name, slur_regex)?;
check_slurs_opt(&data.body, slur_regex)?;
if let Some(name) = &data.name {
if !is_valid_post_title(name) {
return Err(LemmyError::from_message("invalid_post_title"));
}
}
let post_id = data.post_id;
let orig_post = blocking(context.pool(), move |conn| Post::read(conn, post_id)).await??;
check_community_ban(
local_user_view.person.id,
orig_post.community_id,
context.pool(),
)
.await?;
check_community_deleted_or_removed(orig_post.community_id, context.pool()).await?;
// Verify that only the creator can edit
if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
return Err(LemmyError::from_message("no_post_edit_allowed"));
}
// Fetch post links and Pictrs cached image
let data_url = data.url.as_ref();
let (metadata_res, thumbnail_url) =
fetch_site_data(context.client(), context.settings(), data_url).await;
let (embed_title, embed_description, embed_video_url) = metadata_res
.map(|u| (Some(u.title), Some(u.description), Some(u.embed_video_url)))
.unwrap_or_default();
let language_id = Some(
data.language_id.unwrap_or(
blocking(context.pool(), move |conn| {
Language::read_undetermined(conn)
})
.await??,
),
);
let post_form = PostForm {
creator_id: orig_post.creator_id.to_owned(),
community_id: orig_post.community_id,
name: data.name.to_owned().unwrap_or(orig_post.name),
url,
body,
nsfw: data.nsfw,
updated: Some(naive_now()),
embed_title,
embed_description,
embed_video_url,
language_id,
thumbnail_url: Some(thumbnail_url),
..PostForm::default()
};
let post_id = data.post_id;
let res = blocking(context.pool(), move |conn| {
Post::update(conn, post_id, &post_form)
})
.await?;
let updated_post: Post = match res {
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_update_post"
};
return Err(LemmyError::from_error_message(e, err_type));
}
};
// Send apub update
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CreateOrUpdatePost::send(
updated_post.into(),
&local_user_view.person.clone().into(),
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CreateOrUpdateType::Update,
context,
)
.await?;
send_post_ws_message(
data.post_id,
UserOperationCrud::EditPost,
websocket_id,
Some(local_user_view.person.id),
context,
)
.await
}
}