add environments and configuration.service.ts for admin

admin/angular.json

@@ -39,12 +39,24 @@
                   "maximumError": "8kB"
                 }
               ],
-              "outputHashing": "all"
+              "outputHashing": "all",
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.production.ts"
+                }
+              ]
             },
             "development": {
               "optimization": false,
               "extractLicenses": false,
-              "sourceMap": true
+              "sourceMap": true,
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.development.ts"
+                }
+              ]
             }
           },
           "defaultConfiguration": "production"

admin/src/app/services/configuration.service.ts

@@ -0,0 +1,13 @@
+import { Injectable } from '@angular/core';
+import { environment } from '../../environments/environment';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class ConfigurationService {
+
+  public getApiUrl(): string{
+    return environment.apiUrl;
+  }
+
+}

admin/src/app/services/configuration.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { ConfigurationService } from './configuration.service';
+
+describe('Configuration', () => {
+  let service: ConfigurationService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(ConfigurationService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

admin/src/environments/environment.development.ts

@@ -0,0 +1,5 @@
+import { AppConfig } from '../types';
+
+export const environment: AppConfig = {
+  apiUrl: 'http://localhost:4200/api'
+};

admin/src/environments/environment.production.ts

@@ -0,0 +1,5 @@
+import { AppConfig } from '../types';
+
+export const environment: AppConfig = {
+  apiUrl: 'http://localhost:4200/api'
+};

admin/src/environments/environment.ts

@@ -0,0 +1,5 @@
+import { AppConfig } from '../types';
+
+export const environment: AppConfig = {
+  apiUrl: 'http://localhost:4200/api'
+};

admin/src/types.ts

@@ -0,0 +1,4 @@
+
+export interface AppConfig{
+  apiUrl: string;
+}