refactor: use resource identifiers

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

src/models/entity.ts

@@ -6,6 +6,7 @@ import type { EntityInterface, EntityModelInterface } from "@/types/entity";
 import type { MessageInterface } from "@/types/message";
 import { MessageObject } from "./message";
 import { clonePlain } from './clone-plain';
+import type { CollectionIdentifier, EntityIdentifier, ServiceIdentifier } from "@/services";
 
 export class EntityObject implements EntityModelInterface {
 
@@ -18,8 +19,8 @@ export class EntityObject implements EntityModelInterface {
             version: 1,
             provider: '',
             service: '',
-            collection: '',
-            identifier: '',
+            collection: null,
+            identifier: null,
             signature: null,
             created: null,
             modified: null,
@@ -54,16 +55,16 @@ export class EntityObject implements EntityModelInterface {
         return this._data.provider;
     }
 
-    get service(): string {
-        return this._data.service;
+    get service(): ServiceIdentifier {
+        return this._data.service as ServiceIdentifier;
     }
 
-    get collection(): string|number {
-        return this._data.collection;
+    get collection(): CollectionIdentifier {
+        return this._data.collection as CollectionIdentifier;
     }
 
-    get identifier(): string|number {
-        return this._data.identifier;
+    get identifier(): EntityIdentifier {
+        return this._data.identifier as EntityIdentifier;
     }
 
     get signature(): string | null {