use diesel::{dsl::*, result::Error, *}; use lemmy_db_schema::{ aggregates::comment_aggregates::CommentAggregates, functions::hot_rank, fuzzy_search, limit_and_offset, newtypes::{CommentId, CommunityId, DbUrl, PersonId, PostId}, schema::{ comment, comment_aggregates, comment_alias_1, comment_like, comment_saved, community, community_block, community_follower, community_person_ban, person, person_alias_1, person_block, post, }, source::{ comment::{Comment, CommentAlias1, CommentSaved}, community::{Community, CommunityFollower, CommunityPersonBan, CommunitySafe}, person::{Person, PersonAlias1, PersonSafe, PersonSafeAlias1}, person_block::PersonBlock, post::Post, }, traits::{MaybeOptional, ToSafe, ViewToVec}, ListingType, SortType, }; use serde::{Deserialize, Serialize}; #[derive(Debug, PartialEq, Serialize, Deserialize, Clone)] pub struct CommentView { pub comment: Comment, pub creator: PersonSafe, pub recipient: Option, // Left joins to comment and person pub post: Post, pub community: CommunitySafe, pub counts: CommentAggregates, pub creator_banned_from_community: bool, // Left Join to CommunityPersonBan pub subscribed: bool, // Left join to CommunityFollower pub saved: bool, // Left join to CommentSaved pub creator_blocked: bool, // Left join to PersonBlock pub my_vote: Option, // Left join to CommentLike } type CommentViewTuple = ( Comment, PersonSafe, Option, Option, Post, CommunitySafe, CommentAggregates, Option, Option, Option, Option, Option, ); impl CommentView { pub fn read( conn: &PgConnection, comment_id: CommentId, my_person_id: Option, ) -> Result { // The left join below will return None in this case let person_id_join = my_person_id.unwrap_or(PersonId(-1)); let ( comment, creator, _parent_comment, recipient, post, community, counts, creator_banned_from_community, subscribed, saved, creator_blocked, comment_like, ) = comment::table .find(comment_id) .inner_join(person::table) // recipient here .left_join(comment_alias_1::table.on(comment_alias_1::id.nullable().eq(comment::parent_id))) .left_join(person_alias_1::table.on(person_alias_1::id.eq(comment_alias_1::creator_id))) .inner_join(post::table) .inner_join(community::table.on(post::community_id.eq(community::id))) .inner_join(comment_aggregates::table) .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(( comment::all_columns, Person::safe_columns_tuple(), comment_alias_1::all_columns.nullable(), PersonAlias1::safe_columns_tuple().nullable(), post::all_columns, Community::safe_columns_tuple(), 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)?; // If a person is given, then my_vote, if None, should be 0, not null // Necessary to differentiate between other person's votes let my_vote = if my_person_id.is_some() && comment_like.is_none() { Some(0) } else { comment_like }; Ok(CommentView { comment, recipient, post, creator, community, counts, creator_banned_from_community: creator_banned_from_community.is_some(), subscribed: subscribed.is_some(), saved: saved.is_some(), creator_blocked: creator_blocked.is_some(), my_vote, }) } /// Gets the recipient person id. /// If there is no parent comment, its the post creator pub fn get_recipient_id(&self) -> PersonId { match &self.recipient { Some(parent_commenter) => parent_commenter.id, None => self.post.creator_id, } } /// Gets the number of unread replies pub fn get_unread_replies(conn: &PgConnection, my_person_id: PersonId) -> Result { use diesel::dsl::*; comment::table // recipient here .left_join(comment_alias_1::table.on(comment_alias_1::id.nullable().eq(comment::parent_id))) .left_join(person_alias_1::table.on(person_alias_1::id.eq(comment_alias_1::creator_id))) .inner_join(post::table) .inner_join(community::table.on(post::community_id.eq(community::id))) .left_join( person_block::table.on( comment::creator_id .eq(person_block::target_id) .and(person_block::person_id.eq(my_person_id)), ), ) .left_join( community_block::table.on( community::id .eq(community_block::community_id) .and(community_block::person_id.eq(my_person_id)), ), ) .filter(person_alias_1::id.eq(my_person_id)) // Gets the comment replies .or_filter( comment::parent_id .is_null() .and(post::creator_id.eq(my_person_id)), ) // Gets the top level replies .filter(comment::read.eq(false)) .filter(comment::deleted.eq(false)) .filter(comment::removed.eq(false)) // Don't show blocked communities or persons .filter(community_block::person_id.is_null()) .filter(person_block::person_id.is_null()) .select(count(comment::id)) .first::(conn) } } pub struct CommentQueryBuilder<'a> { conn: &'a PgConnection, listing_type: Option, sort: Option, community_id: Option, community_actor_id: Option, post_id: Option, creator_id: Option, recipient_id: Option, my_person_id: Option, search_term: Option, saved_only: Option, unread_only: Option, show_bot_accounts: Option, page: Option, limit: Option, } impl<'a> CommentQueryBuilder<'a> { pub fn create(conn: &'a PgConnection) -> Self { CommentQueryBuilder { conn, listing_type: None, sort: None, community_id: None, community_actor_id: None, post_id: None, creator_id: None, recipient_id: None, my_person_id: None, search_term: None, saved_only: None, unread_only: None, show_bot_accounts: None, page: None, limit: None, } } pub fn listing_type>(mut self, listing_type: T) -> Self { self.listing_type = listing_type.get_optional(); self } pub fn sort>(mut self, sort: T) -> Self { self.sort = sort.get_optional(); self } pub fn post_id>(mut self, post_id: T) -> Self { self.post_id = post_id.get_optional(); self } pub fn creator_id>(mut self, creator_id: T) -> Self { self.creator_id = creator_id.get_optional(); self } pub fn recipient_id>(mut self, recipient_id: T) -> Self { self.recipient_id = recipient_id.get_optional(); self } pub fn community_id>(mut self, community_id: T) -> Self { self.community_id = community_id.get_optional(); self } pub fn my_person_id>(mut self, my_person_id: T) -> Self { self.my_person_id = my_person_id.get_optional(); self } pub fn community_actor_id>(mut self, community_actor_id: T) -> Self { self.community_actor_id = community_actor_id.get_optional(); self } pub fn search_term>(mut self, search_term: T) -> Self { self.search_term = search_term.get_optional(); self } pub fn saved_only>(mut self, saved_only: T) -> Self { self.saved_only = saved_only.get_optional(); self } pub fn unread_only>(mut self, unread_only: T) -> Self { self.unread_only = unread_only.get_optional(); self } pub fn show_bot_accounts>(mut self, show_bot_accounts: T) -> Self { self.show_bot_accounts = show_bot_accounts.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 person_id_join = self.my_person_id.unwrap_or(PersonId(-1)); let mut query = comment::table .inner_join(person::table) // recipient here .left_join(comment_alias_1::table.on(comment_alias_1::id.nullable().eq(comment::parent_id))) .left_join(person_alias_1::table.on(person_alias_1::id.eq(comment_alias_1::creator_id))) .inner_join(post::table) .inner_join(community::table.on(post::community_id.eq(community::id))) .inner_join(comment_aggregates::table) .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( community_block::table.on( community::id .eq(community_block::community_id) .and(community_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(( comment::all_columns, Person::safe_columns_tuple(), comment_alias_1::all_columns.nullable(), PersonAlias1::safe_columns_tuple().nullable(), post::all_columns, Community::safe_columns_tuple(), 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(); // The replies if let Some(recipient_id) = self.recipient_id { query = query // TODO needs lots of testing .filter(person_alias_1::id.eq(recipient_id)) // Gets the comment replies .or_filter( comment::parent_id .is_null() .and(post::creator_id.eq(recipient_id)), ) // Gets the top level replies .filter(comment::deleted.eq(false)) .filter(comment::removed.eq(false)); } if self.unread_only.unwrap_or(false) { query = query.filter(comment::read.eq(false)); } if let Some(creator_id) = self.creator_id { query = query.filter(comment::creator_id.eq(creator_id)); }; if let Some(community_id) = self.community_id { query = query.filter(post::community_id.eq(community_id)); } if let Some(community_actor_id) = self.community_actor_id { query = query.filter(community::actor_id.eq(community_actor_id)) } if let Some(post_id) = self.post_id { query = query.filter(comment::post_id.eq(post_id)); }; if let Some(search_term) = self.search_term { query = query.filter(comment::content.ilike(fuzzy_search(&search_term))); }; if let Some(listing_type) = self.listing_type { match listing_type { ListingType::Subscribed => { query = query.filter(community_follower::person_id.is_not_null()) } // TODO could be this: and(community_follower::person_id.eq(person_id_join)), ListingType::Local => { query = query.filter(community::local.eq(true)).filter( community::hidden .eq(false) .or(community_follower::person_id.eq(person_id_join)), ) } ListingType::All => { query = query.filter( community::hidden .eq(false) .or(community_follower::person_id.eq(person_id_join)), ) } ListingType::Community => {} }; } if self.saved_only.unwrap_or(false) { query = query.filter(comment_saved::id.is_not_null()); } if !self.show_bot_accounts.unwrap_or(true) { query = query.filter(person::bot_account.eq(false)); }; query = match self.sort.unwrap_or(SortType::New) { 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 | SortType::MostComments | SortType::NewComments => { 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()), }; // Don't show blocked communities or persons if self.my_person_id.is_some() { query = query.filter(community_block::person_id.is_null()); query = query.filter(person_block::person_id.is_null()); } let (limit, offset) = limit_and_offset(self.page, self.limit); // Note: deleted and removed comments are done on the front side let res = query .limit(limit) .offset(offset) .load::(self.conn)?; Ok(CommentView::from_tuple_to_vec(res)) } } impl ViewToVec for CommentView { type DbTuple = CommentViewTuple; fn from_tuple_to_vec(items: Vec) -> Vec { items .iter() .map(|a| Self { comment: a.0.to_owned(), creator: a.1.to_owned(), recipient: a.3.to_owned(), post: a.4.to_owned(), community: 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(), creator_blocked: a.10.is_some(), my_vote: a.11, }) .collect::>() } } #[cfg(test)] mod tests { use crate::comment_view::*; use lemmy_db_schema::{ aggregates::comment_aggregates::CommentAggregates, establish_unpooled_connection, source::{comment::*, community::*, person::*, person_block::PersonBlockForm, post::*}, traits::{Blockable, Crud, Likeable}, }; use serial_test::serial; #[test] #[serial] fn test_crud() { let conn = establish_unpooled_connection(); let new_person = PersonForm { name: "timmy".into(), ..PersonForm::default() }; let inserted_person = Person::create(&conn, &new_person).unwrap(); let new_person_2 = PersonForm { name: "sara".into(), ..PersonForm::default() }; let inserted_person_2 = Person::create(&conn, &new_person_2).unwrap(); let new_community = CommunityForm { name: "test community 5".to_string(), title: "nada".to_owned(), ..CommunityForm::default() }; let inserted_community = Community::create(&conn, &new_community).unwrap(); let new_post = PostForm { name: "A test post 2".into(), creator_id: inserted_person.id, community_id: inserted_community.id, ..PostForm::default() }; let inserted_post = Post::create(&conn, &new_post).unwrap(); let comment_form = CommentForm { content: "A test comment 32".into(), creator_id: inserted_person.id, post_id: inserted_post.id, ..CommentForm::default() }; let inserted_comment = Comment::create(&conn, &comment_form).unwrap(); let comment_form_2 = CommentForm { content: "A test blocked comment".into(), creator_id: inserted_person_2.id, post_id: inserted_post.id, parent_id: Some(inserted_comment.id), ..CommentForm::default() }; let inserted_comment_2 = Comment::create(&conn, &comment_form_2).unwrap(); let timmy_blocks_sara_form = PersonBlockForm { person_id: inserted_person.id, target_id: inserted_person_2.id, }; let inserted_block = PersonBlock::block(&conn, &timmy_blocks_sara_form).unwrap(); let expected_block = PersonBlock { id: inserted_block.id, person_id: inserted_person.id, target_id: inserted_person_2.id, published: inserted_block.published, }; assert_eq!(expected_block, inserted_block); let comment_like_form = CommentLikeForm { comment_id: inserted_comment.id, post_id: inserted_post.id, person_id: inserted_person.id, score: 1, }; let _inserted_comment_like = CommentLike::like(&conn, &comment_like_form).unwrap(); let agg = CommentAggregates::read(&conn, inserted_comment.id).unwrap(); let expected_comment_view_no_person = CommentView { creator_banned_from_community: false, my_vote: None, subscribed: false, saved: false, creator_blocked: false, comment: Comment { id: inserted_comment.id, content: "A test comment 32".into(), creator_id: inserted_person.id, post_id: inserted_post.id, parent_id: None, removed: false, deleted: false, read: false, published: inserted_comment.published, ap_id: inserted_comment.ap_id, updated: None, local: true, }, creator: PersonSafe { id: inserted_person.id, name: "timmy".into(), display_name: None, published: inserted_person.published, avatar: None, actor_id: inserted_person.actor_id.to_owned(), local: true, banned: false, deleted: false, admin: false, bot_account: false, bio: None, banner: None, updated: None, inbox_url: inserted_person.inbox_url.to_owned(), shared_inbox_url: None, matrix_user_id: None, ban_expires: None, }, recipient: None, post: Post { id: inserted_post.id, name: inserted_post.name.to_owned(), creator_id: inserted_person.id, url: None, body: None, published: inserted_post.published, updated: None, community_id: inserted_community.id, removed: false, deleted: false, locked: false, stickied: false, nsfw: false, embed_title: None, embed_description: None, embed_html: None, thumbnail_url: None, ap_id: inserted_post.ap_id.to_owned(), local: true, }, community: CommunitySafe { id: inserted_community.id, name: "test community 5".to_string(), icon: None, removed: false, deleted: false, nsfw: false, actor_id: inserted_community.actor_id.to_owned(), local: true, title: "nada".to_owned(), description: None, updated: None, banner: None, hidden: false, published: inserted_community.published, }, counts: CommentAggregates { id: agg.id, comment_id: inserted_comment.id, score: 1, upvotes: 1, downvotes: 0, published: agg.published, }, }; let mut expected_comment_view_with_person = expected_comment_view_no_person.to_owned(); expected_comment_view_with_person.my_vote = Some(1); let read_comment_views_no_person = CommentQueryBuilder::create(&conn) .post_id(inserted_post.id) .list() .unwrap(); let read_comment_views_with_person = CommentQueryBuilder::create(&conn) .post_id(inserted_post.id) .my_person_id(inserted_person.id) .list() .unwrap(); let read_comment_from_blocked_person = CommentView::read(&conn, inserted_comment_2.id, Some(inserted_person.id)).unwrap(); let like_removed = CommentLike::remove(&conn, inserted_person.id, inserted_comment.id).unwrap(); let num_deleted = Comment::delete(&conn, inserted_comment.id).unwrap(); Comment::delete(&conn, inserted_comment_2.id).unwrap(); Post::delete(&conn, inserted_post.id).unwrap(); Community::delete(&conn, inserted_community.id).unwrap(); Person::delete(&conn, inserted_person.id).unwrap(); Person::delete(&conn, inserted_person_2.id).unwrap(); // Make sure its 1, not showing the blocked comment assert_eq!(1, read_comment_views_with_person.len()); assert_eq!( expected_comment_view_no_person, read_comment_views_no_person[1] ); assert_eq!( expected_comment_view_with_person, read_comment_views_with_person[0] ); // Make sure block set the creator blocked assert!(read_comment_from_blocked_person.creator_blocked); assert_eq!(1, num_deleted); assert_eq!(1, like_removed); } }