-use crate::{community_moderator_view::CommunityModeratorView, person_view::PersonViewSafe};
-use diesel::{result::Error, *};
+use crate::structs::{CommunityModeratorView, CommunityView, PersonView};
+use diesel::{
+ pg::Pg,
+ result::Error,
+ BoolExpressionMethods,
+ ExpressionMethods,
+ JoinOnDsl,
+ NullableExpressionMethods,
+ PgTextExpressionMethods,
+ QueryDsl,
+};
+use diesel_async::RunQueryDsl;
use lemmy_db_schema::{
- aggregates::community_aggregates::CommunityAggregates,
- functions::hot_rank,
- fuzzy_search,
- limit_and_offset,
+ aggregates::structs::CommunityAggregates,
newtypes::{CommunityId, PersonId},
schema::{community, community_aggregates, community_block, community_follower, local_user},
source::{
- community::{Community, CommunityFollower, CommunitySafe},
- community_block::CommunityBlock,
+ community::{Community, CommunityFollower},
+ local_user::LocalUser,
},
- traits::{MaybeOptional, ToSafe, ViewToVec},
+ traits::JoinView,
+ utils::{fuzzy_search, limit_and_offset, DbConn, DbPool, ListFn, Queries, ReadFn},
ListingType,
SortType,
+ SubscribedType,
};
-use serde::{Deserialize, Serialize};
-
-#[derive(Debug, Serialize, Deserialize, Clone)]
-pub struct CommunityView {
- pub community: CommunitySafe,
- pub subscribed: bool,
- pub blocked: bool,
- pub counts: CommunityAggregates,
-}
-type CommunityViewTuple = (
- CommunitySafe,
- CommunityAggregates,
- Option<CommunityFollower>,
- Option<CommunityBlock>,
-);
+type CommunityViewTuple = (Community, CommunityAggregates, SubscribedType, bool);
-impl CommunityView {
- pub fn read(
- conn: &PgConnection,
- community_id: CommunityId,
- my_person_id: Option<PersonId>,
- ) -> Result<Self, Error> {
+fn queries<'a>() -> Queries<
+ impl ReadFn<'a, CommunityView, (CommunityId, Option<PersonId>, Option<bool>)>,
+ impl ListFn<'a, CommunityView, CommunityQuery<'a>>,
+> {
+ let all_joins = |query: community::BoxedQuery<'a, Pg>, my_person_id: Option<PersonId>| {
// The left join below will return None in this case
let person_id_join = my_person_id.unwrap_or(PersonId(-1));
- let (community, counts, follower, blocked) = community::table
- .find(community_id)
+ query
.inner_join(community_aggregates::table)
.left_join(
community_follower::table.on(
.and(community_block::person_id.eq(person_id_join)),
),
)
- .select((
- Community::safe_columns_tuple(),
- community_aggregates::all_columns,
- community_follower::all_columns.nullable(),
- community_block::all_columns.nullable(),
- ))
- .first::<CommunityViewTuple>(conn)?;
-
- Ok(CommunityView {
- community,
- subscribed: follower.is_some(),
- blocked: blocked.is_some(),
- counts,
- })
- }
-
- // TODO: this function is only used by is_mod_or_admin() below, can probably be merged
- fn community_mods_and_admins(
- conn: &PgConnection,
- community_id: CommunityId,
- ) -> Result<Vec<PersonId>, Error> {
- let mut mods_and_admins: Vec<PersonId> = Vec::new();
- mods_and_admins.append(
- &mut CommunityModeratorView::for_community(conn, community_id)
- .map(|v| v.into_iter().map(|m| m.moderator.id).collect())?,
- );
- mods_and_admins.append(
- &mut PersonViewSafe::admins(conn).map(|v| v.into_iter().map(|a| a.person.id).collect())?,
- );
- Ok(mods_and_admins)
- }
-
- pub fn is_mod_or_admin(
- conn: &PgConnection,
- person_id: PersonId,
- community_id: CommunityId,
- ) -> bool {
- Self::community_mods_and_admins(conn, community_id)
- .unwrap_or_default()
- .contains(&person_id)
- }
-}
-
-pub struct CommunityQueryBuilder<'a> {
- conn: &'a PgConnection,
- listing_type: Option<ListingType>,
- sort: Option<SortType>,
- my_person_id: Option<PersonId>,
- show_nsfw: Option<bool>,
- search_term: Option<String>,
- page: Option<i64>,
- limit: Option<i64>,
-}
-
-impl<'a> CommunityQueryBuilder<'a> {
- pub fn create(conn: &'a PgConnection) -> Self {
- CommunityQueryBuilder {
- conn,
- my_person_id: None,
- listing_type: None,
- sort: None,
- show_nsfw: None,
- search_term: None,
- page: None,
- limit: None,
+ };
+
+ let selection = (
+ community::all_columns,
+ community_aggregates::all_columns,
+ CommunityFollower::select_subscribed_type(),
+ community_block::id.nullable().is_not_null(),
+ );
+
+ let not_removed_or_deleted = community::removed
+ .eq(false)
+ .and(community::deleted.eq(false));
+
+ let read = move |mut conn: DbConn<'a>,
+ (community_id, my_person_id, is_mod_or_admin): (
+ CommunityId,
+ Option<PersonId>,
+ Option<bool>,
+ )| async move {
+ let mut query = all_joins(
+ community::table.find(community_id).into_boxed(),
+ my_person_id,
+ )
+ .select(selection);
+
+ // Hide deleted and removed for non-admins or mods
+ if !is_mod_or_admin.unwrap_or(false) {
+ query = query.filter(not_removed_or_deleted);
}
- }
-
- pub fn listing_type<T: MaybeOptional<ListingType>>(mut self, listing_type: T) -> Self {
- self.listing_type = listing_type.get_optional();
- self
- }
-
- pub fn sort<T: MaybeOptional<SortType>>(mut self, sort: T) -> Self {
- self.sort = sort.get_optional();
- self
- }
-
- pub fn show_nsfw<T: MaybeOptional<bool>>(mut self, show_nsfw: T) -> Self {
- self.show_nsfw = show_nsfw.get_optional();
- self
- }
- pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
- self.search_term = search_term.get_optional();
- self
- }
+ query.first::<CommunityViewTuple>(&mut conn).await
+ };
- pub fn my_person_id<T: MaybeOptional<PersonId>>(mut self, my_person_id: T) -> Self {
- self.my_person_id = my_person_id.get_optional();
- self
- }
+ let list = move |mut conn: DbConn<'a>, options: CommunityQuery<'a>| async move {
+ use SortType::*;
- pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
- self.page = page.get_optional();
- self
- }
-
- pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
- self.limit = limit.get_optional();
- self
- }
+ let my_person_id = options.local_user.map(|l| l.person_id);
- pub fn list(self) -> Result<Vec<CommunityView>, Error> {
// The left join below will return None in this case
- let person_id_join = self.my_person_id.unwrap_or(PersonId(-1));
+ let person_id_join = my_person_id.unwrap_or(PersonId(-1));
- let mut query = community::table
- .inner_join(community_aggregates::table)
+ let mut query = all_joins(community::table.into_boxed(), my_person_id)
.left_join(local_user::table.on(local_user::person_id.eq(person_id_join)))
- .left_join(
- community_follower::table.on(
- community::id
- .eq(community_follower::community_id)
- .and(community_follower::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)),
- ),
- )
- .select((
- Community::safe_columns_tuple(),
- community_aggregates::all_columns,
- community_follower::all_columns.nullable(),
- community_block::all_columns.nullable(),
- ))
- .into_boxed();
+ .select(selection);
- if let Some(search_term) = self.search_term {
+ if let Some(search_term) = options.search_term {
let searcher = fuzzy_search(&search_term);
query = query
- .filter(community::name.ilike(searcher.to_owned()))
- .or_filter(community::title.ilike(searcher.to_owned()))
- .or_filter(community::description.ilike(searcher));
- };
+ .filter(community::name.ilike(searcher.clone()))
+ .or_filter(community::title.ilike(searcher))
+ }
- match self.sort.unwrap_or(SortType::Hot) {
- SortType::New => query = query.order_by(community::published.desc()),
- SortType::TopAll => query = query.order_by(community_aggregates::subscribers.desc()),
- SortType::TopMonth => query = query.order_by(community_aggregates::users_active_month.desc()),
- SortType::Hot => {
- query = query
- .order_by(
- hot_rank(
- community_aggregates::subscribers,
- community_aggregates::published,
- )
- .desc(),
- )
- .then_order_by(community_aggregates::published.desc());
- // Don't show hidden communities in Hot (trending)
- query = query.filter(
- community::hidden
- .eq(false)
- .or(community_follower::person_id.eq(person_id_join)),
- );
+ // Hide deleted and removed for non-admins or mods
+ if !options.is_mod_or_admin.unwrap_or(false) {
+ query = query.filter(not_removed_or_deleted).filter(
+ community::hidden
+ .eq(false)
+ .or(community_follower::person_id.eq(person_id_join)),
+ );
+ }
+
+ match options.sort.unwrap_or(Hot) {
+ Hot | Active => query = query.order_by(community_aggregates::hot_rank.desc()),
+ NewComments | TopDay | TopTwelveHour | TopSixHour | TopHour => {
+ query = query.order_by(community_aggregates::users_active_day.desc())
}
- // Covers all other sorts
- _ => {
- query = query
- .order_by(
- hot_rank(
- community_aggregates::subscribers,
- community_aggregates::published,
- )
- .desc(),
- )
- .then_order_by(community_aggregates::published.desc())
+ New => query = query.order_by(community::published.desc()),
+ Old => query = query.order_by(community::published.asc()),
+ // Controversial is temporary until a CommentSortType is created
+ MostComments | Controversial => query = query.order_by(community_aggregates::comments.desc()),
+ TopAll | TopYear | TopNineMonths => {
+ query = query.order_by(community_aggregates::subscribers.desc())
}
+ TopSixMonths | TopThreeMonths => {
+ query = query.order_by(community_aggregates::users_active_half_year.desc())
+ }
+ TopMonth => query = query.order_by(community_aggregates::users_active_month.desc()),
+ TopWeek => query = query.order_by(community_aggregates::users_active_week.desc()),
};
- if let Some(listing_type) = self.listing_type {
+ if let Some(listing_type) = options.listing_type {
query = match listing_type {
- ListingType::Subscribed => query.filter(community_follower::person_id.is_not_null()), // TODO could be this: and(community_follower::person_id.eq(person_id_join)),
+ ListingType::Subscribed => query.filter(community_follower::pending.is_not_null()), // TODO could be this: and(community_follower::person_id.eq(person_id_join)),
ListingType::Local => query.filter(community::local.eq(true)),
_ => query,
};
}
// Don't show blocked communities or nsfw communities if not enabled in profile
- if self.my_person_id.is_some() {
+ if options.local_user.is_some() {
query = query.filter(community_block::person_id.is_null());
query = query.filter(community::nsfw.eq(false).or(local_user::show_nsfw.eq(true)));
} else {
- // No person in request, only show nsfw communities if show_nsfw passed into request
- if !self.show_nsfw.unwrap_or(false) {
+ // No person in request, only show nsfw communities if show_nsfw is passed into request
+ if !options.show_nsfw.unwrap_or(false) {
query = query.filter(community::nsfw.eq(false));
}
}
- let (limit, offset) = limit_and_offset(self.page, self.limit);
- let res = query
+ let (limit, offset) = limit_and_offset(options.page, options.limit)?;
+ query
.limit(limit)
.offset(offset)
- .filter(community::removed.eq(false))
- .filter(community::deleted.eq(false))
- .load::<CommunityViewTuple>(self.conn)?;
+ .load::<CommunityViewTuple>(&mut conn)
+ .await
+ };
- Ok(CommunityView::from_tuple_to_vec(res))
+ Queries::new(read, list)
+}
+
+impl CommunityView {
+ pub async fn read(
+ pool: &mut DbPool<'_>,
+ community_id: CommunityId,
+ my_person_id: Option<PersonId>,
+ is_mod_or_admin: Option<bool>,
+ ) -> Result<Self, Error> {
+ queries()
+ .read(pool, (community_id, my_person_id, is_mod_or_admin))
+ .await
}
+
+ pub async fn is_mod_or_admin(
+ pool: &mut DbPool<'_>,
+ person_id: PersonId,
+ community_id: CommunityId,
+ ) -> Result<bool, Error> {
+ let is_mod =
+ CommunityModeratorView::is_community_moderator(pool, community_id, person_id).await?;
+ if is_mod {
+ return Ok(true);
+ }
+
+ PersonView::is_admin(pool, person_id).await
+ }
+}
+
+#[derive(Default)]
+pub struct CommunityQuery<'a> {
+ pub listing_type: Option<ListingType>,
+ pub sort: Option<SortType>,
+ pub local_user: Option<&'a LocalUser>,
+ pub search_term: Option<String>,
+ pub is_mod_or_admin: Option<bool>,
+ pub show_nsfw: Option<bool>,
+ pub page: Option<i64>,
+ pub limit: Option<i64>,
}
-impl ViewToVec for CommunityView {
- type DbTuple = CommunityViewTuple;
- fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
- items
- .iter()
- .map(|a| Self {
- community: a.0.to_owned(),
- counts: a.1.to_owned(),
- subscribed: a.2.is_some(),
- blocked: a.3.is_some(),
- })
- .collect::<Vec<Self>>()
+impl<'a> CommunityQuery<'a> {
+ pub async fn list(self, pool: &mut DbPool<'_>) -> Result<Vec<CommunityView>, Error> {
+ queries().list(pool, self).await
+ }
+}
+
+impl JoinView for CommunityView {
+ type JoinTuple = CommunityViewTuple;
+ fn from_tuple(a: Self::JoinTuple) -> Self {
+ Self {
+ community: a.0,
+ counts: a.1,
+ subscribed: a.2,
+ blocked: a.3,
+ }
}
}
projects / lemmy.git / blobdiff