use crate::structs::PersonMentionView; use diesel::{ dsl::now, result::Error, BoolExpressionMethods, ExpressionMethods, JoinOnDsl, NullableExpressionMethods, QueryDsl, }; use diesel_async::RunQueryDsl; use lemmy_db_schema::{ aggregates::structs::CommentAggregates, newtypes::{PersonId, PersonMentionId}, schema::{ comment, comment_aggregates, comment_like, comment_saved, community, community_follower, community_person_ban, person, person_block, person_mention, post, }, source::{ comment::{Comment, CommentSaved}, community::{Community, CommunityFollower, CommunityPersonBan}, person::Person, person_block::PersonBlock, person_mention::PersonMention, post::Post, }, traits::JoinView, utils::{get_conn, limit_and_offset, DbPool}, CommentSortType, }; type PersonMentionViewTuple = ( PersonMention, Comment, Person, Post, Community, Person, CommentAggregates, Option, Option, Option, Option, Option, ); impl PersonMentionView { pub async fn read( pool: &mut DbPool<'_>, person_mention_id: PersonMentionId, my_person_id: Option, ) -> Result { let conn = &mut get_conn(pool).await?; let person_alias_1 = diesel::alias!(person as person1); // The left join below will return None in this case let person_id_join = my_person_id.unwrap_or(PersonId(-1)); let ( person_mention, comment, creator, post, community, recipient, counts, creator_banned_from_community, follower, saved, creator_blocked, my_vote, ) = person_mention::table .find(person_mention_id) .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(person_alias_1) .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id))) .left_join( community_person_ban::table.on( community::id .eq(community_person_ban::community_id) .and(community_person_ban::person_id.eq(comment::creator_id)), ), ) .left_join( community_follower::table.on( post::community_id .eq(community_follower::community_id) .and(community_follower::person_id.eq(person_id_join)), ), ) .left_join( comment_saved::table.on( comment::id .eq(comment_saved::comment_id) .and(comment_saved::person_id.eq(person_id_join)), ), ) .left_join( person_block::table.on( comment::creator_id .eq(person_block::target_id) .and(person_block::person_id.eq(person_id_join)), ), ) .left_join( comment_like::table.on( comment::id .eq(comment_like::comment_id) .and(comment_like::person_id.eq(person_id_join)), ), ) .select(( person_mention::all_columns, comment::all_columns, person::all_columns, post::all_columns, community::all_columns, person_alias_1.fields(person::all_columns), comment_aggregates::all_columns, community_person_ban::all_columns.nullable(), community_follower::all_columns.nullable(), comment_saved::all_columns.nullable(), person_block::all_columns.nullable(), comment_like::score.nullable(), )) .first::(conn) .await?; Ok(PersonMentionView { person_mention, comment, creator, post, community, recipient, counts, creator_banned_from_community: creator_banned_from_community.is_some(), subscribed: CommunityFollower::to_subscribed_type(&follower), saved: saved.is_some(), creator_blocked: creator_blocked.is_some(), my_vote, }) } /// Gets the number of unread mentions pub async fn get_unread_mentions( pool: &mut DbPool<'_>, my_person_id: PersonId, ) -> Result { use diesel::dsl::count; let conn = &mut get_conn(pool).await?; person_mention::table .inner_join(comment::table) .filter(person_mention::recipient_id.eq(my_person_id)) .filter(person_mention::read.eq(false)) .filter(comment::deleted.eq(false)) .filter(comment::removed.eq(false)) .select(count(person_mention::id)) .first::(conn) .await } } #[derive(Default)] pub struct PersonMentionQuery { pub my_person_id: Option, pub recipient_id: Option, pub sort: Option, pub unread_only: Option, pub show_bot_accounts: Option, pub page: Option, pub limit: Option, } impl PersonMentionQuery { pub async fn list(self, pool: &mut DbPool<'_>) -> Result, Error> { let conn = &mut get_conn(pool).await?; let person_alias_1 = diesel::alias!(person as person1); // The left join below will return None in this case let person_id_join = self.my_person_id.unwrap_or(PersonId(-1)); let mut query = person_mention::table .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(person_alias_1) .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id))) .left_join( community_person_ban::table.on( community::id .eq(community_person_ban::community_id) .and(community_person_ban::person_id.eq(comment::creator_id)) .and( community_person_ban::expires .is_null() .or(community_person_ban::expires.gt(now)), ), ), ) .left_join( community_follower::table.on( post::community_id .eq(community_follower::community_id) .and(community_follower::person_id.eq(person_id_join)), ), ) .left_join( comment_saved::table.on( comment::id .eq(comment_saved::comment_id) .and(comment_saved::person_id.eq(person_id_join)), ), ) .left_join( person_block::table.on( comment::creator_id .eq(person_block::target_id) .and(person_block::person_id.eq(person_id_join)), ), ) .left_join( comment_like::table.on( comment::id .eq(comment_like::comment_id) .and(comment_like::person_id.eq(person_id_join)), ), ) .select(( person_mention::all_columns, comment::all_columns, person::all_columns, post::all_columns, community::all_columns, person_alias_1.fields(person::all_columns), comment_aggregates::all_columns, community_person_ban::all_columns.nullable(), community_follower::all_columns.nullable(), comment_saved::all_columns.nullable(), person_block::all_columns.nullable(), comment_like::score.nullable(), )) .into_boxed(); if let Some(recipient_id) = self.recipient_id { query = query.filter(person_mention::recipient_id.eq(recipient_id)); } if self.unread_only.unwrap_or(false) { query = query.filter(person_mention::read.eq(false)); } if !self.show_bot_accounts.unwrap_or(true) { query = query.filter(person::bot_account.eq(false)); }; query = match self.sort.unwrap_or(CommentSortType::Hot) { CommentSortType::Hot => query.then_order_by(comment_aggregates::hot_rank.desc()), CommentSortType::New => query.then_order_by(comment::published.desc()), CommentSortType::Old => query.then_order_by(comment::published.asc()), CommentSortType::Top => query.order_by(comment_aggregates::score.desc()), }; let (limit, offset) = limit_and_offset(self.page, self.limit)?; let res = query .limit(limit) .offset(offset) .load::(conn) .await?; Ok(res.into_iter().map(PersonMentionView::from_tuple).collect()) } } impl JoinView for PersonMentionView { type JoinTuple = PersonMentionViewTuple; fn from_tuple(a: Self::JoinTuple) -> Self { Self { person_mention: a.0, comment: a.1, creator: a.2, post: a.3, community: a.4, recipient: a.5, counts: a.6, creator_banned_from_community: a.7.is_some(), subscribed: CommunityFollower::to_subscribed_type(&a.8), saved: a.9.is_some(), creator_blocked: a.10.is_some(), my_vote: a.11, } } }