Continued creating the entity system

src/utils/roles.be.ts

@@ -0,0 +1,14 @@
+import {Role} from "@/interfaces/entity";
+import client from "@/lib/mongodb";
+
+const db = client.db(process.env.MONGODB_DB);
+
+export const getRolesByEntities = async (entityIDs: string[]) =>
+	await db
+		.collection("roles")
+		.find<Role>({entityID: {$in: entityIDs}})
+		.toArray();
+
+export const getRolesByEntity = async (entityID: string) => await db.collection("roles").find<Role>({entityID}).toArray();
+
+export const getRole = async (id: string) => (await db.collection("roles").findOne<Role>({id})) ?? undefined;