1 use crate::structs::{CommunityModeratorView, CommunityView, PersonView};
7 NullableExpressionMethods,
8 PgTextExpressionMethods,
11 use diesel_async::RunQueryDsl;
12 use lemmy_db_schema::{
13 aggregates::structs::CommunityAggregates,
14 newtypes::{CommunityId, PersonId},
15 schema::{community, community_aggregates, community_block, community_follower, local_user},
17 community::{Community, CommunityFollower},
18 community_block::CommunityBlock,
19 local_user::LocalUser,
22 utils::{fuzzy_search, get_conn, limit_and_offset, DbPool},
26 use typed_builder::TypedBuilder;
28 type CommunityViewTuple = (
31 Option<CommunityFollower>,
32 Option<CommunityBlock>,
37 pool: &mut DbPool<'_>,
38 community_id: CommunityId,
39 my_person_id: Option<PersonId>,
40 is_mod_or_admin: Option<bool>,
41 ) -> Result<Self, Error> {
42 let conn = &mut get_conn(pool).await?;
43 // The left join below will return None in this case
44 let person_id_join = my_person_id.unwrap_or(PersonId(-1));
46 let mut query = community::table
48 .inner_join(community_aggregates::table)
50 community_follower::table.on(
52 .eq(community_follower::community_id)
53 .and(community_follower::person_id.eq(person_id_join)),
57 community_block::table.on(
59 .eq(community_block::community_id)
60 .and(community_block::person_id.eq(person_id_join)),
64 community::all_columns,
65 community_aggregates::all_columns,
66 community_follower::all_columns.nullable(),
67 community_block::all_columns.nullable(),
71 // Hide deleted and removed for non-admins or mods
72 if !is_mod_or_admin.unwrap_or(false) {
74 .filter(community::removed.eq(false))
75 .filter(community::deleted.eq(false));
78 let (community, counts, follower, blocked) = query.first::<CommunityViewTuple>(conn).await?;
82 subscribed: CommunityFollower::to_subscribed_type(&follower),
83 blocked: blocked.is_some(),
88 pub async fn is_mod_or_admin(
89 pool: &mut DbPool<'_>,
91 community_id: CommunityId,
92 ) -> Result<bool, Error> {
94 CommunityModeratorView::is_community_moderator(pool, community_id, person_id).await?;
99 PersonView::is_admin(pool, person_id).await
103 #[derive(TypedBuilder)]
104 #[builder(field_defaults(default))]
105 pub struct CommunityQuery<'a, 'b: 'a> {
107 pool: &'a mut DbPool<'b>,
108 listing_type: Option<ListingType>,
109 sort: Option<SortType>,
110 local_user: Option<&'a LocalUser>,
111 search_term: Option<String>,
112 is_mod_or_admin: Option<bool>,
113 show_nsfw: Option<bool>,
118 impl<'a, 'b: 'a> CommunityQuery<'a, 'b> {
119 pub async fn list(self) -> Result<Vec<CommunityView>, Error> {
122 let conn = &mut get_conn(self.pool).await?;
124 // The left join below will return None in this case
125 let person_id_join = self.local_user.map(|l| l.person_id).unwrap_or(PersonId(-1));
127 let mut query = community::table
128 .inner_join(community_aggregates::table)
129 .left_join(local_user::table.on(local_user::person_id.eq(person_id_join)))
131 community_follower::table.on(
133 .eq(community_follower::community_id)
134 .and(community_follower::person_id.eq(person_id_join)),
138 community_block::table.on(
140 .eq(community_block::community_id)
141 .and(community_block::person_id.eq(person_id_join)),
145 community::all_columns,
146 community_aggregates::all_columns,
147 community_follower::all_columns.nullable(),
148 community_block::all_columns.nullable(),
152 if let Some(search_term) = self.search_term {
153 let searcher = fuzzy_search(&search_term);
155 .filter(community::name.ilike(searcher.clone()))
156 .or_filter(community::title.ilike(searcher));
159 // Hide deleted and removed for non-admins or mods
160 if !self.is_mod_or_admin.unwrap_or(false) {
162 .filter(community::removed.eq(false))
163 .filter(community::deleted.eq(false))
167 .or(community_follower::person_id.eq(person_id_join)),
170 match self.sort.unwrap_or(Hot) {
171 Hot | Active => query = query.order_by(community_aggregates::hot_rank.desc()),
172 NewComments | TopDay | TopTwelveHour | TopSixHour | TopHour => {
173 query = query.order_by(community_aggregates::users_active_day.desc())
175 New => query = query.order_by(community::published.desc()),
176 Old => query = query.order_by(community::published.asc()),
177 MostComments => query = query.order_by(community_aggregates::comments.desc()),
178 TopAll | TopYear | TopNineMonths => {
179 query = query.order_by(community_aggregates::subscribers.desc())
181 TopSixMonths | TopThreeMonths => {
182 query = query.order_by(community_aggregates::users_active_half_year.desc())
184 TopMonth => query = query.order_by(community_aggregates::users_active_month.desc()),
185 TopWeek => query = query.order_by(community_aggregates::users_active_week.desc()),
188 if let Some(listing_type) = self.listing_type {
189 query = match listing_type {
190 ListingType::Subscribed => query.filter(community_follower::person_id.is_not_null()), // TODO could be this: and(community_follower::person_id.eq(person_id_join)),
191 ListingType::Local => query.filter(community::local.eq(true)),
196 // Don't show blocked communities or nsfw communities if not enabled in profile
197 if self.local_user.is_some() {
198 query = query.filter(community_block::person_id.is_null());
199 query = query.filter(community::nsfw.eq(false).or(local_user::show_nsfw.eq(true)));
201 // No person in request, only show nsfw communities if show_nsfw is passed into request
202 if !self.show_nsfw.unwrap_or(false) {
203 query = query.filter(community::nsfw.eq(false));
207 let (limit, offset) = limit_and_offset(self.page, self.limit)?;
211 .load::<CommunityViewTuple>(conn)
214 Ok(res.into_iter().map(CommunityView::from_tuple).collect())
218 impl JoinView for CommunityView {
219 type JoinTuple = CommunityViewTuple;
220 fn from_tuple(a: Self::JoinTuple) -> Self {
224 subscribed: CommunityFollower::to_subscribed_type(&a.2),
225 blocked: a.3.is_some(),