feat: admin query

core/src/database/query/admin.rs

@@ -0,0 +1,18 @@
+use crate::Query;
+
+use ::entity::{candidate, candidate::Entity as Admin};
+use sea_orm::*;
+
+impl Query {
+    pub async fn find_admin_by_id(db: &DbConn, id: i32) -> Result<Option<candidate::Model>, DbErr> {
+        Admin::find_by_id(id).one(db).await
+    }
+
+    pub async fn get_all_admin_public_keys(db: &DbConn) -> Result<Vec<String>, DbErr> {
+        let admins = Admin::find().all(db).await?;
+
+        let public_keys = admins.iter().map(|admin| admin.public_key.clone()).collect();
+
+        Ok(public_keys)
+    }
+}

core/src/database/query/mod.rs

@@ -1,4 +1,5 @@
 pub struct Query;
 
 pub mod candidate;
+pub mod admin;
 pub mod session;