Make functions work with both connection and pool (#3420)

[lemmy.git] / crates / db_views_actor / src / community_follower_view.rs

diff --git a/crates/db_views_actor/src/community_follower_view.rs b/crates/db_views_actor/src/community_follower_view.rs
index 581d9b57cc630830ca8f5d54e6278973be07d593..c30503878ebbba0ec3243ab4f19014d2101050d6 100644 (file)
--- a/crates/db_views_actor/src/community_follower_view.rs
+++ b/crates/db_views_actor/src/community_follower_view.rs
@@ -1,64 +1,78 @@
-use diesel::{result::Error, *};
+use crate::structs::CommunityFollowerView;
+use diesel::{
+  dsl::{count_star, not},
+  result::Error,
+  sql_function,
+  ExpressionMethods,
+  QueryDsl,
+};
+use diesel_async::RunQueryDsl;
 use lemmy_db_schema::{
-  newtypes::{CommunityId, PersonId},
+  newtypes::{CommunityId, DbUrl, PersonId},
   schema::{community, community_follower, person},
-  source::{
-    community::{Community, CommunitySafe},
-    person::{Person, PersonSafe},
-  },
-  traits::{ToSafe, ViewToVec},
+  source::{community::Community, person::Person},
+  traits::JoinView,
+  utils::{get_conn, DbPool},
 };
-use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Serialize, Deserialize, Clone)]
-pub struct CommunityFollowerView {
-  pub community: CommunitySafe,
-  pub follower: PersonSafe,
-}
+type CommunityFollowerViewTuple = (Community, Person);
 
-type CommunityFollowerViewTuple = (CommunitySafe, PersonSafe);
+sql_function!(fn coalesce(x: diesel::sql_types::Nullable<diesel::sql_types::Text>, y: diesel::sql_types::Text) -> diesel::sql_types::Text);
 
 impl CommunityFollowerView {
-  pub fn for_community(conn: &PgConnection, community_id: CommunityId) -> Result<Vec<Self>, Error> {
+  pub async fn get_community_follower_inboxes(
+    pool: &mut DbPool<'_>,
+    community_id: CommunityId,
+  ) -> Result<Vec<DbUrl>, Error> {
+    let conn = &mut get_conn(pool).await?;
     let res = community_follower::table
-      .inner_join(community::table)
+      .filter(community_follower::community_id.eq(community_id))
+      .filter(not(person::local))
       .inner_join(person::table)
-      .select((
-        Community::safe_columns_tuple(),
-        Person::safe_columns_tuple(),
-      ))
+      .select(coalesce(person::shared_inbox_url, person::inbox_url))
+      .distinct()
+      .load::<DbUrl>(conn)
+      .await?;
+
+    Ok(res)
+  }
+  pub async fn count_community_followers(
+    pool: &mut DbPool<'_>,
+    community_id: CommunityId,
+  ) -> Result<i64, Error> {
+    let conn = &mut get_conn(pool).await?;
+    let res = community_follower::table
       .filter(community_follower::community_id.eq(community_id))
-      .order_by(community::title)
-      .load::<CommunityFollowerViewTuple>(conn)?;
+      .select(count_star())
+      .first::<i64>(conn)
+      .await?;
 
-    Ok(Self::from_tuple_to_vec(res))
+    Ok(res)
   }
 
-  pub fn for_person(conn: &PgConnection, person_id: PersonId) -> Result<Vec<Self>, Error> {
+  pub async fn for_person(pool: &mut DbPool<'_>, person_id: PersonId) -> Result<Vec<Self>, Error> {
+    let conn = &mut get_conn(pool).await?;
     let res = community_follower::table
       .inner_join(community::table)
       .inner_join(person::table)
-      .select((
-        Community::safe_columns_tuple(),
-        Person::safe_columns_tuple(),
-      ))
+      .select((community::all_columns, person::all_columns))
       .filter(community_follower::person_id.eq(person_id))
+      .filter(community::deleted.eq(false))
+      .filter(community::removed.eq(false))
       .order_by(community::title)
-      .load::<CommunityFollowerViewTuple>(conn)?;
+      .load::<CommunityFollowerViewTuple>(conn)
+      .await?;
 
-    Ok(Self::from_tuple_to_vec(res))
+    Ok(res.into_iter().map(Self::from_tuple).collect())
   }
 }
 
-impl ViewToVec for CommunityFollowerView {
-  type DbTuple = CommunityFollowerViewTuple;
-  fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
-    items
-      .iter()
-      .map(|a| Self {
-        community: a.0.to_owned(),
-        follower: a.1.to_owned(),
-      })
-      .collect::<Vec<Self>>()
+impl JoinView for CommunityFollowerView {
+  type JoinTuple = CommunityFollowerViewTuple;
+  fn from_tuple(a: Self::JoinTuple) -> Self {
+    Self {
+      community: a.0,
+      follower: a.1,
+    }
   }
 }