lemmy/crates/api/src/comment.rs

232 lines
6.4 KiB
Rust

use crate::Perform;
use actix_web::web::Data;
use lemmy_api_common::{
blocking,
check_community_ban,
check_downvotes_enabled,
check_person_block,
comment::*,
get_local_user_view_from_jwt,
};
use lemmy_apub::{
activities::voting::{
undo_vote::UndoVote,
vote::{Vote, VoteType},
},
fetcher::post_or_comment::PostOrComment,
};
use lemmy_db_queries::{source::comment::Comment_, Likeable, Saveable};
use lemmy_db_schema::{source::comment::*, LocalUserId};
use lemmy_db_views::{comment_view::CommentView, local_user_view::LocalUserView};
use lemmy_utils::{ApiError, ConnectionId, LemmyError};
use lemmy_websocket::{send::send_comment_ws_message, LemmyContext, UserOperation};
use std::convert::TryInto;
#[async_trait::async_trait(?Send)]
impl Perform for MarkCommentAsRead {
type Response = CommentResponse;
async fn perform(
&self,
context: &Data<LemmyContext>,
_websocket_id: Option<ConnectionId>,
) -> Result<CommentResponse, LemmyError> {
let data: &MarkCommentAsRead = self;
let local_user_view =
get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
let comment_id = data.comment_id;
let orig_comment = blocking(context.pool(), move |conn| {
CommentView::read(conn, comment_id, None)
})
.await??;
check_community_ban(
local_user_view.person.id,
orig_comment.community.id,
context.pool(),
)
.await?;
// Verify that only the recipient can mark as read
if local_user_view.person.id != orig_comment.get_recipient_id() {
return Err(ApiError::err("no_comment_edit_allowed").into());
}
// Do the mark as read
let read = data.read;
blocking(context.pool(), move |conn| {
Comment::update_read(conn, comment_id, read)
})
.await?
.map_err(|_| ApiError::err("couldnt_update_comment"))?;
// Refetch it
let comment_id = data.comment_id;
let person_id = local_user_view.person.id;
let comment_view = blocking(context.pool(), move |conn| {
CommentView::read(conn, comment_id, Some(person_id))
})
.await??;
let res = CommentResponse {
comment_view,
recipient_ids: Vec::new(),
form_id: None,
};
Ok(res)
}
}
#[async_trait::async_trait(?Send)]
impl Perform for SaveComment {
type Response = CommentResponse;
async fn perform(
&self,
context: &Data<LemmyContext>,
_websocket_id: Option<ConnectionId>,
) -> Result<CommentResponse, LemmyError> {
let data: &SaveComment = self;
let local_user_view =
get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
let comment_saved_form = CommentSavedForm {
comment_id: data.comment_id,
person_id: local_user_view.person.id,
};
if data.save {
let save_comment = move |conn: &'_ _| CommentSaved::save(conn, &comment_saved_form);
if blocking(context.pool(), save_comment).await?.is_err() {
return Err(ApiError::err("couldnt_save_comment").into());
}
} else {
let unsave_comment = move |conn: &'_ _| CommentSaved::unsave(conn, &comment_saved_form);
if blocking(context.pool(), unsave_comment).await?.is_err() {
return Err(ApiError::err("couldnt_save_comment").into());
}
}
let comment_id = data.comment_id;
let person_id = local_user_view.person.id;
let comment_view = blocking(context.pool(), move |conn| {
CommentView::read(conn, comment_id, Some(person_id))
})
.await??;
Ok(CommentResponse {
comment_view,
recipient_ids: Vec::new(),
form_id: None,
})
}
}
#[async_trait::async_trait(?Send)]
impl Perform for CreateCommentLike {
type Response = CommentResponse;
async fn perform(
&self,
context: &Data<LemmyContext>,
websocket_id: Option<ConnectionId>,
) -> Result<CommentResponse, LemmyError> {
let data: &CreateCommentLike = self;
let local_user_view =
get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;
let mut recipient_ids = Vec::<LocalUserId>::new();
// Don't do a downvote if site has downvotes disabled
check_downvotes_enabled(data.score, context.pool()).await?;
let comment_id = data.comment_id;
let orig_comment = blocking(context.pool(), move |conn| {
CommentView::read(conn, comment_id, None)
})
.await??;
check_community_ban(
local_user_view.person.id,
orig_comment.community.id,
context.pool(),
)
.await?;
check_person_block(
local_user_view.person.id,
orig_comment.get_recipient_id(),
context.pool(),
)
.await?;
// Add parent user to recipients
let recipient_id = orig_comment.get_recipient_id();
if let Ok(local_recipient) = blocking(context.pool(), move |conn| {
LocalUserView::read_person(conn, recipient_id)
})
.await?
{
recipient_ids.push(local_recipient.local_user.id);
}
let like_form = CommentLikeForm {
comment_id: data.comment_id,
post_id: orig_comment.post.id,
person_id: local_user_view.person.id,
score: data.score,
};
// Remove any likes first
let person_id = local_user_view.person.id;
blocking(context.pool(), move |conn| {
CommentLike::remove(conn, person_id, comment_id)
})
.await??;
// Only add the like if the score isnt 0
let comment = orig_comment.comment;
let object = PostOrComment::Comment(comment);
let do_add = like_form.score != 0 && (like_form.score == 1 || like_form.score == -1);
if do_add {
let like_form2 = like_form.clone();
let like = move |conn: &'_ _| CommentLike::like(conn, &like_form2);
if blocking(context.pool(), like).await?.is_err() {
return Err(ApiError::err("couldnt_like_comment").into());
}
Vote::send(
&object,
&local_user_view.person,
orig_comment.community.id,
like_form.score.try_into()?,
context,
)
.await?;
} else {
// API doesn't distinguish between Undo/Like and Undo/Dislike
UndoVote::send(
&object,
&local_user_view.person,
orig_comment.community.id,
VoteType::Like,
context,
)
.await?;
}
send_comment_ws_message(
data.comment_id,
UserOperation::CreateCommentLike,
websocket_id,
None,
Some(local_user_view.person.id),
recipient_ids,
context,
)
.await
}
}