use diesel::{result::Error, *}; use lemmy_db_queries::{ aggregates::comment_aggregates::CommentAggregates, functions::hot_rank, limit_and_offset, MaybeOptional, SortType, ToSafe, ViewToVec, }; use lemmy_db_schema::{ schema::{ comment, comment_aggregates, comment_like, comment_saved, community, community_follower, community_user_ban, post, user_, user_alias_1, user_mention, }, source::{ comment::{Comment, CommentSaved}, community::{Community, CommunityFollower, CommunitySafe, CommunityUserBan}, post::Post, user::{UserAlias1, UserSafe, UserSafeAlias1, User_}, user_mention::UserMention, }, }; use serde::Serialize; #[derive(Debug, PartialEq, Serialize, Clone)] pub struct UserMentionView { pub user_mention: UserMention, pub comment: Comment, pub creator: UserSafe, pub post: Post, pub community: CommunitySafe, pub recipient: UserSafeAlias1, pub counts: CommentAggregates, pub creator_banned_from_community: bool, // Left Join to CommunityUserBan pub subscribed: bool, // Left join to CommunityFollower pub saved: bool, // Left join to CommentSaved pub my_vote: Option, // Left join to CommentLike } type UserMentionViewTuple = ( UserMention, Comment, UserSafe, Post, CommunitySafe, UserSafeAlias1, CommentAggregates, Option, Option, Option, Option, ); impl UserMentionView { pub fn read( conn: &PgConnection, user_mention_id: i32, my_user_id: Option, ) -> Result { // The left join below will return None in this case let user_id_join = my_user_id.unwrap_or(-1); let ( user_mention, comment, creator, post, community, recipient, counts, creator_banned_from_community, subscribed, saved, my_vote, ) = user_mention::table .find(user_mention_id) .inner_join(comment::table) .inner_join(user_::table.on(comment::creator_id.eq(user_::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(user_alias_1::table) .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id))) .left_join( community_user_ban::table.on( community::id .eq(community_user_ban::community_id) .and(community_user_ban::user_id.eq(comment::creator_id)), ), ) .left_join( community_follower::table.on( post::community_id .eq(community_follower::community_id) .and(community_follower::user_id.eq(user_id_join)), ), ) .left_join( comment_saved::table.on( comment::id .eq(comment_saved::comment_id) .and(comment_saved::user_id.eq(user_id_join)), ), ) .left_join( comment_like::table.on( comment::id .eq(comment_like::comment_id) .and(comment_like::user_id.eq(user_id_join)), ), ) .select(( user_mention::all_columns, comment::all_columns, User_::safe_columns_tuple(), post::all_columns, Community::safe_columns_tuple(), UserAlias1::safe_columns_tuple(), comment_aggregates::all_columns, community_user_ban::all_columns.nullable(), community_follower::all_columns.nullable(), comment_saved::all_columns.nullable(), comment_like::score.nullable(), )) .first::(conn)?; Ok(UserMentionView { user_mention, comment, creator, post, community, recipient, counts, creator_banned_from_community: creator_banned_from_community.is_some(), subscribed: subscribed.is_some(), saved: saved.is_some(), my_vote, }) } } pub struct UserMentionQueryBuilder<'a> { conn: &'a PgConnection, my_user_id: Option, recipient_id: Option, sort: &'a SortType, unread_only: bool, page: Option, limit: Option, } impl<'a> UserMentionQueryBuilder<'a> { pub fn create(conn: &'a PgConnection) -> Self { UserMentionQueryBuilder { conn, my_user_id: None, recipient_id: None, sort: &SortType::New, unread_only: false, page: None, limit: None, } } pub fn sort(mut self, sort: &'a SortType) -> Self { self.sort = sort; self } pub fn unread_only(mut self, unread_only: bool) -> Self { self.unread_only = unread_only; self } pub fn recipient_id>(mut self, recipient_id: T) -> Self { self.recipient_id = recipient_id.get_optional(); self } pub fn my_user_id>(mut self, my_user_id: T) -> Self { self.my_user_id = my_user_id.get_optional(); self } pub fn page>(mut self, page: T) -> Self { self.page = page.get_optional(); self } pub fn limit>(mut self, limit: T) -> Self { self.limit = limit.get_optional(); self } pub fn list(self) -> Result, Error> { use diesel::dsl::*; // The left join below will return None in this case let user_id_join = self.my_user_id.unwrap_or(-1); let mut query = user_mention::table .inner_join(comment::table) .inner_join(user_::table.on(comment::creator_id.eq(user_::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(user_alias_1::table) .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id))) .left_join( community_user_ban::table.on( community::id .eq(community_user_ban::community_id) .and(community_user_ban::user_id.eq(comment::creator_id)), ), ) .left_join( community_follower::table.on( post::community_id .eq(community_follower::community_id) .and(community_follower::user_id.eq(user_id_join)), ), ) .left_join( comment_saved::table.on( comment::id .eq(comment_saved::comment_id) .and(comment_saved::user_id.eq(user_id_join)), ), ) .left_join( comment_like::table.on( comment::id .eq(comment_like::comment_id) .and(comment_like::user_id.eq(user_id_join)), ), ) .select(( user_mention::all_columns, comment::all_columns, User_::safe_columns_tuple(), post::all_columns, Community::safe_columns_tuple(), UserAlias1::safe_columns_tuple(), comment_aggregates::all_columns, community_user_ban::all_columns.nullable(), community_follower::all_columns.nullable(), comment_saved::all_columns.nullable(), comment_like::score.nullable(), )) .into_boxed(); if let Some(recipient_id) = self.recipient_id { query = query.filter(user_mention::recipient_id.eq(recipient_id)); } if self.unread_only { query = query.filter(user_mention::read.eq(false)); } query = match self.sort { SortType::Hot | SortType::Active => query .order_by(hot_rank(comment_aggregates::score, comment_aggregates::published).desc()) .then_order_by(comment_aggregates::published.desc()), SortType::New => query.order_by(comment::published.desc()), SortType::TopAll => query.order_by(comment_aggregates::score.desc()), SortType::TopYear => query .filter(comment::published.gt(now - 1.years())) .order_by(comment_aggregates::score.desc()), SortType::TopMonth => query .filter(comment::published.gt(now - 1.months())) .order_by(comment_aggregates::score.desc()), SortType::TopWeek => query .filter(comment::published.gt(now - 1.weeks())) .order_by(comment_aggregates::score.desc()), SortType::TopDay => query .filter(comment::published.gt(now - 1.days())) .order_by(comment_aggregates::score.desc()), }; let (limit, offset) = limit_and_offset(self.page, self.limit); let res = query .limit(limit) .offset(offset) .load::(self.conn)?; Ok(UserMentionView::from_tuple_to_vec(res)) } } impl ViewToVec for UserMentionView { type DbTuple = UserMentionViewTuple; fn from_tuple_to_vec(items: Vec) -> Vec { items .iter() .map(|a| Self { user_mention: a.0.to_owned(), comment: a.1.to_owned(), creator: a.2.to_owned(), post: a.3.to_owned(), community: a.4.to_owned(), recipient: a.5.to_owned(), counts: a.6.to_owned(), creator_banned_from_community: a.7.is_some(), subscribed: a.8.is_some(), saved: a.9.is_some(), my_vote: a.10, }) .collect::>() } }