[AAE-8713] feat: create api registry with factories support (#7634)

Co-authored-by: Andras Popovics <popovics@ndras.hu>
Co-authored-by: Michal Dobkiewicz <michal.dobkiewicz@hyland.com>
Co-authored-by: Michał Dobkiewicz <ddohcim@users.noreply.github.com>

lib/core/api/api-clients.service.ts

@@ -0,0 +1,54 @@
+/*!
+ * @license
+ * Copyright 2019 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Inject, Injectable } from '@angular/core';
+import { ApiClientFactory, API_CLIENT_FACTORY_TOKEN } from './api-client.factory';
+import { Constructor, Dictionary } from './types';
+
+@Injectable()
+export class ApiClientsService {
+
+    constructor(@Inject(API_CLIENT_FACTORY_TOKEN) private apiCreateFactory: ApiClientFactory) { }
+
+    private registry: Dictionary<Constructor<any>> = {};
+    private instances: Partial<Api.ApiRegistry> = {};
+
+    get<T extends keyof Api.ApiRegistry>(apiName: T): Api.ApiRegistry[T] {
+
+        const ApiClass = this.registry[apiName];
+
+        if (!ApiClass) {
+            throw new Error(`Api not registred: ${apiName}`);
+        }
+
+        return this.instances[apiName] as Api.ApiRegistry[T] ?? this.instantiateApi(apiName);
+    }
+
+
+    register<T extends keyof Api.ApiRegistry>(apiName: T, api: Constructor<Api.ApiRegistry[T]>): void {
+        this.registry[apiName] = api;
+    }
+
+    private instantiateApi<T extends keyof Api.ApiRegistry>(apiName: T): Api.ApiRegistry[T] {
+        const ApiClass = this.registry[apiName];
+        const instance = this.apiCreateFactory.create<Api.ApiRegistry[T]>(ApiClass);
+        this.instances[apiName] = instance;
+
+        return instance;
+    }
+}
+