Tax done

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

@@ -0,0 +1,81 @@
+import {Injectable} from '@angular/core';
+import {Observable} from 'rxjs/internal/Observable';
+import {catchError} from 'rxjs/operators';
+import {HttpClient, HttpHeaders, HttpParams} from '@angular/common/http';
+import {Product} from '../core/product';
+import {ErrorLoggerService} from '../core/error-logger.service';
+
+const httpOptions = {
+  headers: new HttpHeaders({'Content-Type': 'application/json'})
+};
+
+const url = '/v1/products';
+const serviceName = 'ProductService';
+
+@Injectable({providedIn: 'root'})
+export class ProductService {
+
+  constructor(private http: HttpClient, private log: ErrorLoggerService) {
+  }
+
+  get(id: string): Observable<Product> {
+    const getUrl: string = (id === null) ? `${url}/new` : `${url}/${id}`;
+    return <Observable<Product>>this.http.get<Product>(getUrl)
+      .pipe(
+        catchError(this.log.handleError(serviceName, `get id=${id}`))
+      );
+  }
+
+  list(): Observable<Product[]> {
+    const options = {params: new HttpParams().set('l', '')};
+    return <Observable<Product[]>>this.http.get<Product[]>(url, options)
+      .pipe(
+        catchError(this.log.handleError(serviceName, 'getList'))
+      );
+  }
+
+  save(product: Product): Observable<Product> {
+    return <Observable<Product>>this.http.post<Product>(`${url}/new`, product, httpOptions)
+      .pipe(
+        catchError(this.log.handleError(serviceName, 'save'))
+      );
+  }
+
+  update(product: Product): Observable<Product> {
+    return <Observable<Product>>this.http.put<Product>(`${url}/${product.id}`, product, httpOptions)
+      .pipe(
+        catchError(this.log.handleError(serviceName, 'update'))
+      );
+  }
+
+  saveOrUpdate(product: Product): Observable<Product> {
+    if (!product.id) {
+      return this.save(product);
+    } else {
+      return this.update(product);
+    }
+  }
+
+  delete(id: string): Observable<Product> {
+    return <Observable<Product>>this.http.delete<Product>(`${url}/${id}`, httpOptions)
+      .pipe(
+        catchError(this.log.handleError(serviceName, 'delete'))
+      );
+  }
+
+  autocomplete(term: string): Observable<Product[]> {
+    const options = {params: new HttpParams().set('t', term)};
+    return <Observable<Product[]>>this.http.get<Product[]>(url, options)
+      .pipe(
+        catchError(this.log.handleError(serviceName, 'autocomplete'))
+      );
+  }
+
+  balance(id: string, date: string): Observable<number> {
+    const options = {params: new HttpParams().set('b', 'true').set('d', date)};
+    return <Observable<number>>this.http.get<number>(`${url}/${id}`, options)
+      .pipe(
+        catchError(this.log.handleError(serviceName, 'balance'))
+      );
+  }
+}