Fix: Username unique index was case sensitive and this allowed duplicate names.

Feature: Moved temporal products into their own module and reverted the products module

bookie/src/app/temporal-product/temporal-product.service.ts

@@ -0,0 +1,43 @@
+import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { Observable } from 'rxjs';
+import { catchError } from 'rxjs/operators';
+
+import { ErrorLoggerService } from '../core/error-logger.service';
+import { Product } from '../core/product';
+
+const httpOptions = {
+  headers: new HttpHeaders({ 'Content-Type': 'application/json' }),
+};
+
+const url = '/api/temporal-products';
+const serviceName = 'ProductService';
+
+@Injectable({ providedIn: 'root' })
+export class TemporalProductService {
+  constructor(private http: HttpClient, private log: ErrorLoggerService) {}
+
+  get(id: string): Observable<Product> {
+    return this.http
+      .get<Product>(`${url}/${id}`)
+      .pipe(catchError(this.log.handleError(serviceName, `get id=${id}`))) as Observable<Product>;
+  }
+
+  list(): Observable<Product[][]> {
+    return this.http
+      .get<Product[][]>(`${url}/list`)
+      .pipe(catchError(this.log.handleError(serviceName, 'list'))) as Observable<Product[][]>;
+  }
+
+  update(product: Product): Observable<void> {
+    return this.http
+      .put<Product>(`${url}/${product.versionId}`, product, httpOptions)
+      .pipe(catchError(this.log.handleError(serviceName, 'update'))) as Observable<void>;
+  }
+
+  delete(id: string): Observable<void> {
+    return this.http
+      .delete<Product>(`${url}/${id}`, httpOptions)
+      .pipe(catchError(this.log.handleError(serviceName, 'delete'))) as Observable<void>;
+  }
+}