Add logging service.

- Implements custom logging functionality.

src/app/_models/account.spec.ts

@@ -1,7 +0,0 @@
-import { Account } from './account';
-
-describe('Account', () => {
-  it('should create an instance', () => {
-    expect(new Account()).toBeTruthy();
-  });
-});

src/app/_services/logging.service.spec.ts

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

src/app/_services/logging.service.ts

@@ -0,0 +1,48 @@
+import {Injectable} from '@angular/core';
+import {NGXLogger} from 'ngx-logger';
+import {environment} from '@src/environments/environment';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class LoggingService {
+  env: string;
+  canDebug: boolean;
+
+  constructor(private logger: NGXLogger) {
+    // TRACE|DEBUG|INFO|LOG|WARN|ERROR|FATAL|OFF
+    this.env = environment.production ? 'Production' : 'Development';
+
+    if (this.env === 'Development') {
+      this.sendInfoLevelMessage('Dropping into debug mode');
+    }
+  }
+
+  sendTraceLevelMessage(message, source, error): void {
+    this.logger.trace(message, source, error);
+  }
+
+  sendDebugLevelMessage(message, source, error): void {
+    this.logger.debug(message, source, error);
+  }
+
+  sendInfoLevelMessage(message): void {
+    this.logger.info(message);
+  }
+
+  sendLogLevelMessage(message, source, error): void {
+    this.logger.log(message, source, error);
+  }
+
+  sendWarnLevelMessage(message, error): void {
+    this.logger.warn(message, error);
+  }
+
+  sendErrorLevelMessage(message, source, error): void {
+    this.logger.error(message, source, error);
+  }
+
+  sendFatalLevelMessage(message, source, error): void {
+    this.logger.fatal(message, source, error);
+  }
+}