finish node api version 2

Author: phithounsavanh

.env_example

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+NODE_ENV=development
+MONGO_URL=
+PORT=3000
+FRONTEND=http://127.0.0.1:5173

.gitignore

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+node_modules
+.env

README.md

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+## About NODE.js API
+
+This project is created to teach you how to create a Restful CRUD API with Node.js, Express and MongoDB.
+
+If you want to learn how the project is developed. You can visit https://www.youtube.com/watch?v=FPYlicctQMM&list=PLbKN8A2wssqUlVHRBeJIgIvkbyrX4kR0V or https://www.youtube.com/watch?v=9OfL9H6AmhQ&feature=youtu.be
+
+### API Features
+
+The application can create, read, update and delete data, for example: products, in a database. 

controllers/productController.js

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+const Product = require('../models/productModel')
+const asyncHandler = require('express-async-handler')
+
+// get all product
+const getProducts = asyncHandler(async(req, res) => {
+    try {
+        const products = await Product.find({});
+        res.status(200).json(products);
+    } catch (error) {
+        res.status(500);
+        throw new Error(error.message);
+    }
+})
+
+// get a single product
+const getProduct = asyncHandler(async(req, res) =>{
+    try {
+        const {id} = req.params;
+        const product = await Product.findById(id);
+        res.status(200).json(product);
+    } catch (error) {
+        res.status(500);
+        throw new Error(error.message);
+    }
+})
+
+// create a product
+const createProduct = asyncHandler(async(req, res) => {
+    try {
+        const product = await Product.create(req.body)
+        res.status(200).json(product);
+        
+    } catch (error) {
+        res.status(500);
+        throw new Error(error.message);
+    }
+})
+
+// update a product
+const updateProduct = asyncHandler(async(req, res) => {
+    try {
+        const {id} = req.params;
+        const product = await Product.findByIdAndUpdate(id, req.body);
+        // we cannot find any product in database
+        if(!product){
+            res.status(404);
+            throw new Error(`cannot find any product with ID ${id}`);
+        }
+        const updatedProduct = await Product.findById(id);
+        res.status(200).json(updatedProduct);
+        
+    } catch (error) {
+        res.status(500);
+        throw new Error(error.message);
+    }
+})
+
+const deleteProduct = asyncHandler(async(req, res) =>{
+    try {
+        const {id} = req.params;
+        const product = await Product.findByIdAndDelete(id);
+        if(!product){
+            res.status(404);
+            throw new Error(`cannot find any product with ID ${id}`);
+        }
+        res.status(200).json(product);
+        
+    } catch (error) {
+        res.status(500);
+        throw new Error(error.message);
+    }
+})
+
+module.exports = {
+    getProducts,
+    getProduct,
+    createProduct,
+    updateProduct,
+    deleteProduct
+}

middleware/errorMiddleware.js

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+const errorMiddleware = (err, req, res, next) => {
+    console.log('here is an error middleware');
+    const statusCode = res.statusCode ? res.statusCode : 500;
+    res.status(statusCode);
+    res.json({message: err.message, stack: process.env.NODE_ENV === "development" ? err.stack : null});
+}
+
+module.exports = errorMiddleware

models/productModel.js

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+const mongoose = require('mongoose')
+
+const productSchema = mongoose.Schema(
+    {
+        name: {
+            type: String,
+            required: [true, "Please enter a product name"]
+        },
+        quantity: {
+            type: Number,
+            required: true,
+            default: 0
+        },
+        price: {
+            type: Number,
+            required: true,
+        },
+        image: {
+            type: String,
+            required: false,
+        }
+    },
+    {
+        timestamps: true
+    }
+)
+
+
+const Product = mongoose.model('Product', productSchema);
+
+module.exports = Product;