feat: application/usecase router-network port 추가

- router-network input port 추가
- router-network output port 추가
- router-network usecase 반환형 promise로 변경

Author: easdkr

example03/src/application/port/input/router-network.input-port.ts

@@ -0,0 +1,29 @@
+import { RouterNetworkOutputPort } from 'src/application/port/output/router-network.output-port';
+import { RouterNetworkUseCase } from 'src/application/usecase/router-network.usecase';
+import { Router } from 'src/domain/entity/router';
+import { NetworkOperation } from 'src/domain/service/network.operation';
+import { Network } from 'src/domain/vo/network';
+import { RouterId } from 'src/domain/vo/router.id';
+
+export class RouterNetworkInputPort implements RouterNetworkUseCase {
+  public constructor(private readonly _routerNetworkOutputPort: RouterNetworkOutputPort) {}
+
+  async addNetworkToRouter(routerId: RouterId, network: Network): Promise<Router> {
+    const router = await this.fetchRouter(routerId);
+    return await this.createNetwork(router, network);
+  }
+
+  private async fetchRouter(routerId: RouterId): Promise<Router> {
+    return await this._routerNetworkOutputPort.fetchRouterById(routerId);
+  }
+
+  private async createNetwork(router: Router, network: Network): Promise<Router> {
+    const newRouter = NetworkOperation.createNewNetwork(router, network);
+
+    return (await this.persistNetwork(router)) ? newRouter : router;
+  }
+
+  private async persistNetwork(router: Router): Promise<boolean> {
+    return await this._routerNetworkOutputPort.persistRouter(router);
+  }
+}

example03/src/application/port/output/router-network.output-port.ts

@@ -0,0 +1,7 @@
+import { Router } from 'src/domain/entity/router';
+import { RouterId } from 'src/domain/vo/router.id';
+
+export interface RouterNetworkOutputPort {
+  fetchRouterById(routerId: RouterId): Promise<Router>;
+  persistRouter(router: Router): Promise<boolean>;
+}

example03/src/application/usecase/router-network.usecase.ts

@@ -16,5 +16,5 @@ export interface RouterNetworkUseCase {
    * - And CIDR이 유효하다
    * - Then 라우터에 네트워크를 추가한다
    */
-  addNetworkToRouter(routerId: RouterId, network: Network): Router;
+  addNetworkToRouter(routerId: RouterId, network: Network): Promise<Router>;
 }