feat: Whitelist extension to return user whitelisted users

Signed-off-by: Awiteb <a@4rs.nl>

crates/oxidetalis/src/database/whitelist.rs

@@ -16,6 +16,8 @@
 
 //! Database extension to work with the whitelist table
 
+use std::num::{NonZeroU32, NonZeroU8};
+
 use chrono::Utc;
 use oxidetalis_core::types::PublicKey;
 use oxidetalis_entities::prelude::*;
@@ -40,6 +42,14 @@ pub trait WhiteListExt {
         whitelister: &UserModel,
         target_public_key: &PublicKey,
     ) -> ServerResult<()>;
+
+    /// Returns the whitelist of the user
+    async fn user_whitelist(
+        &self,
+        whitelister: &UserModel,
+        page: NonZeroU32,
+        page_size: NonZeroU8,
+    ) -> ServerResult<Vec<WhitelistModel>>;
 }
 
 impl WhiteListExt for DatabaseConnection {
@@ -78,4 +88,19 @@ impl WhiteListExt for DatabaseConnection {
         .await?;
         Ok(())
     }
+
+    async fn user_whitelist(
+        &self,
+        whitelister: &UserModel,
+        page: NonZeroU32,
+        page_size: NonZeroU8,
+    ) -> ServerResult<Vec<WhitelistModel>> {
+        whitelister
+            .find_related(WhitelistEntity)
+            .select()
+            .paginate(self, u64::from(page_size.get()))
+            .fetch_page(u64::from(page.get() - 1))
+            .await
+            .map_err(Into::into)
+    }
 }