use crate::structs::CommentReplyView; use diesel::{ dsl::exists, pg::Pg, result::Error, sql_types, BoolExpressionMethods, BoxableExpression, ExpressionMethods, IntoSql, JoinOnDsl, NullableExpressionMethods, QueryDsl, }; use diesel_async::RunQueryDsl; use lemmy_db_schema::{ aliases, newtypes::{CommentReplyId, PersonId}, schema::{ comment, comment_aggregates, comment_like, comment_reply, comment_saved, community, community_follower, community_moderator, community_person_ban, local_user, person, person_block, post, }, utils::{get_conn, limit_and_offset, DbConn, DbPool, ListFn, Queries, ReadFn}, CommentSortType, }; fn queries<'a>() -> Queries< impl ReadFn<'a, CommentReplyView, (CommentReplyId, Option)>, impl ListFn<'a, CommentReplyView, CommentReplyQuery>, > { let is_creator_banned_from_community = exists( community_person_ban::table.filter( community::id .eq(community_person_ban::community_id) .and(community_person_ban::person_id.eq(comment::creator_id)), ), ); let is_local_user_banned_from_community = |person_id| { exists( community_person_ban::table.filter( community::id .eq(community_person_ban::community_id) .and(community_person_ban::person_id.eq(person_id)), ), ) }; let is_saved = |person_id| { exists( comment_saved::table.filter( comment::id .eq(comment_saved::comment_id) .and(comment_saved::person_id.eq(person_id)), ), ) }; let is_community_followed = |person_id| { community_follower::table .filter( post::community_id .eq(community_follower::community_id) .and(community_follower::person_id.eq(person_id)), ) .select(community_follower::pending.nullable()) .single_value() }; let is_creator_blocked = |person_id| { exists( person_block::table.filter( comment::creator_id .eq(person_block::target_id) .and(person_block::person_id.eq(person_id)), ), ) }; let score = |person_id| { comment_like::table .filter( comment::id .eq(comment_like::comment_id) .and(comment_like::person_id.eq(person_id)), ) .select(comment_like::score.nullable()) .single_value() }; let creator_is_moderator = exists( community_moderator::table.filter( community::id .eq(community_moderator::community_id) .and(community_moderator::person_id.eq(comment::creator_id)), ), ); let creator_is_admin = exists( local_user::table.filter( comment::creator_id .eq(local_user::person_id) .and(local_user::admin.eq(true)), ), ); let all_joins = move |query: comment_reply::BoxedQuery<'a, Pg>, my_person_id: Option| { let is_local_user_banned_from_community_selection: Box< dyn BoxableExpression<_, Pg, SqlType = sql_types::Bool>, > = if let Some(person_id) = my_person_id { Box::new(is_local_user_banned_from_community(person_id)) } else { Box::new(false.into_sql::()) }; let score_selection: Box< dyn BoxableExpression<_, Pg, SqlType = sql_types::Nullable>, > = if let Some(person_id) = my_person_id { Box::new(score(person_id)) } else { Box::new(None::.into_sql::>()) }; let subscribed_type_selection: Box< dyn BoxableExpression<_, Pg, SqlType = sql_types::Nullable>, > = if let Some(person_id) = my_person_id { Box::new(is_community_followed(person_id)) } else { Box::new(None::.into_sql::>()) }; let is_saved_selection: Box> = if let Some(person_id) = my_person_id { Box::new(is_saved(person_id)) } else { Box::new(false.into_sql::()) }; let is_creator_blocked_selection: Box> = if let Some(person_id) = my_person_id { Box::new(is_creator_blocked(person_id)) } else { Box::new(false.into_sql::()) }; query .inner_join(comment::table) .inner_join(person::table.on(comment::creator_id.eq(person::id))) .inner_join(post::table.on(comment::post_id.eq(post::id))) .inner_join(community::table.on(post::community_id.eq(community::id))) .inner_join(aliases::person1) .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id))) .select(( comment_reply::all_columns, comment::all_columns, person::all_columns, post::all_columns, community::all_columns, aliases::person1.fields(person::all_columns), comment_aggregates::all_columns, is_creator_banned_from_community, is_local_user_banned_from_community_selection, creator_is_moderator, creator_is_admin, subscribed_type_selection, is_saved_selection, is_creator_blocked_selection, score_selection, )) }; let read = move |mut conn: DbConn<'a>, (comment_reply_id, my_person_id): (CommentReplyId, Option)| async move { all_joins( comment_reply::table.find(comment_reply_id).into_boxed(), my_person_id, ) .first(&mut conn) .await }; let list = move |mut conn: DbConn<'a>, options: CommentReplyQuery| async move { let mut query = all_joins(comment_reply::table.into_boxed(), options.my_person_id); if let Some(recipient_id) = options.recipient_id { query = query.filter(comment_reply::recipient_id.eq(recipient_id)); } if options.unread_only { query = query.filter(comment_reply::read.eq(false)); } if !options.show_bot_accounts { query = query.filter(person::bot_account.eq(false)); }; query = match options.sort.unwrap_or(CommentSortType::New) { CommentSortType::Hot => query.then_order_by(comment_aggregates::hot_rank.desc()), CommentSortType::Controversial => { query.then_order_by(comment_aggregates::controversy_rank.desc()) } CommentSortType::New => query.then_order_by(comment_reply::published.desc()), CommentSortType::Old => query.then_order_by(comment_reply::published.asc()), CommentSortType::Top => query.order_by(comment_aggregates::score.desc()), }; let (limit, offset) = limit_and_offset(options.page, options.limit)?; query .limit(limit) .offset(offset) .load::(&mut conn) .await }; Queries::new(read, list) } impl CommentReplyView { pub async fn read( pool: &mut DbPool<'_>, comment_reply_id: CommentReplyId, my_person_id: Option, ) -> Result, Error> { queries().read(pool, (comment_reply_id, my_person_id)).await } /// Gets the number of unread replies pub async fn get_unread_replies( pool: &mut DbPool<'_>, my_person_id: PersonId, ) -> Result { use diesel::dsl::count; let conn = &mut get_conn(pool).await?; comment_reply::table .inner_join(comment::table) .left_join( person_block::table.on( comment::creator_id .eq(person_block::target_id) .and(person_block::person_id.eq(my_person_id)), ), ) // Dont count replies from blocked users .filter(person_block::person_id.is_null()) .filter(comment_reply::recipient_id.eq(my_person_id)) .filter(comment_reply::read.eq(false)) .filter(comment::deleted.eq(false)) .filter(comment::removed.eq(false)) .select(count(comment_reply::id)) .first::(conn) .await } } #[derive(Default)] pub struct CommentReplyQuery { pub my_person_id: Option, pub recipient_id: Option, pub sort: Option, pub unread_only: bool, pub show_bot_accounts: bool, pub page: Option, pub limit: Option, } impl CommentReplyQuery { pub async fn list(self, pool: &mut DbPool<'_>) -> Result, Error> { queries().list(pool, self).await } }