diff --git a/server/interfaces.ts b/server/interfaces.ts
index 8e4464c..2595baa 100644
--- a/server/interfaces.ts
+++ b/server/interfaces.ts
@@ -1,29 +1,35 @@
+import { Collection } from "@discordjs/collection"
+import { Role } from "discord.js"
 
 export type Maybe<T> = T | undefined
 export interface Player {
-	name: string
+  name: string
 }
 export type supported_languages = "german" | "english"
 export interface localized_string {
-	[k: string]: {
-		[k in supported_languages]: string
-	}
+  [k: string]: {
+    [k in supported_languages]: string
+  }
 }
 export class CustomError extends Error {
-	private code: string
-	public constructor(message: string, errorCode: string) {
-		super(message)
-		this.code = errorCode
-	}
-	public getCode() { return this.code }
+  private code: string
+  public constructor(message: string, errorCode: string) {
+    super(message)
+    this.code = errorCode
+  }
+  public getCode() { return this.code }
 }
 export const errorCodes = {
-	no_end_date: 'no_end_date',
-	no_string_present: 'no_string_present',
-	no_schedule: 'no_schedule',
-	schedule_not_supported: 'schedule_not_supported',
-	no_repetition_amount: 'no_repetition_amount',
-	invalid_repetition_string: 'invalid_repetition_string',
-	no_creator_id: "no_creator_id",
-
+  no_end_date: 'no_end_date',
+  no_string_present: 'no_string_present',
+  no_schedule: 'no_schedule',
+  schedule_not_supported: 'schedule_not_supported',
+  no_repetition_amount: 'no_repetition_amount',
+  invalid_repetition_string: 'invalid_repetition_string',
+  no_creator_id: "no_creator_id",
 }
+export interface ChangedRoles {
+  addedRoles: Collection<string, Role>
+  removedRoles: Collection<string, Role>
+}
+export type PermissionLevel = "VIEWER" | "ADMIN"