BETTERZON-38: Added products example API endpoint

Backend/src/index.ts

@@ -6,6 +6,7 @@ import * as dotenv from "dotenv";
 import express from "express";
 import cors from "cors";
 import helmet from "helmet";
+import { productsRouter } from "./products/products.router";
 
 dotenv.config();
 
@@ -30,6 +31,7 @@ const app = express();
 app.use(helmet());
 app.use(cors());
 app.use(express.json());
+app.use("/products", productsRouter);
 
 
 /**

Backend/src/products/product.interface.ts

@@ -0,0 +1,14 @@
+export interface Product {
+    product_id: number;
+    asin: string;
+    is_active: boolean;
+    name: string;
+    short_description: string;
+    long_description: string;
+    image_guid: string;
+    date_added: Date;
+    last_modified: Date;
+    manufacturer_id: number;
+    selling_rank: string;
+    category_id: number;
+}

Backend/src/products/products.interface.ts

@@ -0,0 +1,4 @@
+import { Product } from "./product.interface";
+export interface Products {
+    [key: number]: Product;
+}

Backend/src/products/products.router.ts

@@ -0,0 +1,88 @@
+/**
+ * Required External Modules and Interfaces
+ */
+
+import express, {Request, Response} from 'express';
+import * as ProductService from './products.service';
+import {Product} from './product.interface';
+import {Products} from './products.interface';
+
+
+/**
+ * Router Definition
+ */
+
+export const productsRouter = express.Router();
+
+
+/**
+ * Controller Definitions
+ */
+
+// GET items/
+
+productsRouter.get('/', async (req: Request, res: Response) => {
+    try {
+        const products: Products = await ProductService.findAll();
+
+        res.status(200).send(products);
+    } catch (e) {
+        res.status(404).send(e.message);
+    }
+});
+
+// GET items/:id
+
+productsRouter.get('/:id', async (req: Request, res: Response) => {
+    const id: number = parseInt(req.params.id, 10);
+
+    try {
+        const product: Product = await ProductService.find(id);
+
+        res.status(200).send(product);
+    } catch (e) {
+        res.status(404).send(e.message);
+    }
+});
+
+
+// POST items/
+
+productsRouter.post('/', async (req: Request, res: Response) => {
+    try {
+        const product: Product = req.body.product;
+
+        await ProductService.create(product);
+
+        res.sendStatus(201);
+    } catch (e) {
+        res.status(404).send(e.message);
+    }
+});
+
+// PUT items/
+
+productsRouter.put('/', async (req: Request, res: Response) => {
+    try {
+        const product: Product = req.body.product;
+
+        await ProductService.update(product);
+
+        res.sendStatus(200);
+    } catch (e) {
+        res.status(500).send(e.message);
+    }
+});
+
+// DELETE items/:id
+
+productsRouter.delete('/:id', async (req: Request, res: Response) => {
+    try {
+        const id: number = parseInt(req.params.id, 10);
+        await ProductService.remove(id);
+
+        res.sendStatus(200);
+    } catch (e) {
+        res.status(500).send(e.message);
+    }
+});

Backend/src/products/products.service.ts

@@ -0,0 +1,103 @@
+/**
+ * Data Model Interfaces
+ */
+
+import { Product } from "./product.interface";
+import { Products } from "./products.interface";
+
+
+/**
+ * In-Memory Store
+ */
+
+const products: Products = {
+    1: {
+        product_id: 1,
+        asin: "",
+        is_active: true,
+        name: "Burger",
+        short_description: "",
+        long_description: "",
+        image_guid: "",
+        date_added: new Date(),
+        last_modified: new Date(),
+        manufacturer_id: 1,
+        selling_rank: "",
+        category_id: 1
+    },
+    2: {
+        product_id: 2,
+        asin: "",
+        is_active: true,
+        name: "Pizza",
+        short_description: "",
+        long_description: "",
+        image_guid: "",
+        date_added: new Date(),
+        last_modified: new Date(),
+        manufacturer_id: 2,
+        selling_rank: "",
+        category_id: 1
+    },
+    3: {
+        product_id: 3,
+        asin: "",
+        is_active: true,
+        name: "Tea",
+        short_description: "",
+        long_description: "",
+        image_guid: "",
+        date_added: new Date(),
+        last_modified: new Date(),
+        manufacturer_id: 3,
+        selling_rank: "",
+        category_id: 2
+    }
+};
+
+
+/**
+ * Service Methods
+ */
+
+export const findAll = async (): Promise<Products> => {
+    return products;
+};
+
+export const find = async (id: number): Promise<Product> => {
+    const record: Product = products[id];
+
+    if (record) {
+        return record;
+    }
+
+    throw new Error("No record found");
+};
+
+export const create = async (newItem: Product): Promise<void> => {
+    const product_id = new Date().valueOf();
+    products[product_id] = {
+        ...newItem,
+        product_id
+    };
+};
+
+export const update = async (updatedItem: Product): Promise<void> => {
+    if (products[updatedItem.product_id]) {
+        products[updatedItem.product_id] = updatedItem;
+        return;
+    }
+
+    throw new Error("No record found to update");
+};
+
+export const remove = async (id: number): Promise<void> => {
+    const record: Product = products[id];
+
+    if (record) {
+        delete products[id];
+        return;
+    }
+
+    throw new Error("No record found to delete");
+};