northwind-rest-api/backend/controllers/products-controller.js

Local REST API Exposing Northwind Database.

const express = require("express");
const Product = require("../models/product");
const productsLogic = require("../business-logic/products-logic");
const verifyToken = require("../middleware/verify-token");
const verifyAdmin = require("../middleware/verify-admin");
const router = express.Router();

// Get all products: 
router.get("/products", async (request, response) => {
    try {
        // Logic: 
        const products = await productsLogic.getAllProducts();

        // Success: 
        response.json(products);
    }
    catch (err) {
       response.status(500).send(err.message);
    }
});

// Get one product: 
router.get("/products/:id([0-9]+)", async (request, response) => {
    try {
        // Data: 
        const id = +request.params.id;

        // Logic: 
        const product = await productsLogic.getOneProduct(id);
        if(!product) return response.status(404).send(`id ${id} not found.`);

        // Success: 
        response.json(product);
    }
    catch (err) {
        response.status(500).send(err.message);
    }
});

// Add product: 
router.post("/products", async (request, response) => {
    try {
        // Data: 
        const product = new Product(request.body);

        // Validation: 
        const errors = product.validate();
        if (errors) return response.status(400).send(errors);

        // Logic: 
        const addedProduct = await productsLogic.addProduct(product, request.files?.image);

        // Success: 
        response.status(201).json(addedProduct);
    }
    catch (err) {
        response.status(500).send(err.message);
    }
});

// Update product: 
router.put("/products/:id([0-9]+)", async (request, response) => {
    try {
        // Data: 
        const id = +request.params.id;
        request.body.id = id;
        const product = new Product(request.body);

        // Validation: 
        const errors = product.validate();
        if (errors) return response.status(400).send(errors);

        // Logic: 
        const updatedProduct = await productsLogic.updateProduct(product, request.files?.image);
        if(!updatedProduct) return response.status(404).send(`id ${id} not found.`);

        // Success: 
        response.json(updatedProduct);
    }
    catch (err) {
        response.status(500).send(err.message);
    }
});

// Delete product: 
router.delete("/products/:id([0-9]+)", async (request, response) => {
    try {
        // Data: 
        const id = +request.params.id;

        // Logic: 
        await productsLogic.deleteProduct(id);

        // Success: 
        response.sendStatus(204);
    }
    catch (err) {
        response.status(500).send(err.message);
    }
});

// Get top products: 
router.get("/products/top-three", verifyToken, async (request, response) => {
    try {
        // Logic: 
        const topProducts = await productsLogic.getTopProducts();

        // Success: 
        response.json(topProducts);
    }
    catch (err) {
       response.status(500).send(err.message);
    }
});

// Get out-of-stock products: 
router.get("/products/out-of-stock", verifyAdmin, async (request, response) => {
    try {
        // Logic: 
        const outOfStock = await productsLogic.getOutOfStockProducts();

        // Success: 
        response.json(outOfStock);
    }
    catch (err) {
       response.status(500).send(err.message);
    }
});

module.exports = router;