server.js

// import express
const express = require('express');
const cors = require('cors');
const cookieParser = require('cookie-parser');

// create an instance of express
const app = express();

// use cors
app.use(cors());

// use cookie parser
app.use(cookieParser("somesecret"));

// body parser
app.use(express.json());

// define the port
const PORT = 8080;

// GET - /api/health - returns a string that says "Hello World!"
app.get("/api/health", (req, res) => {
    try {
        res.send("Hello World!");
    } catch (error) {
        console.log(error);
    }
})

let groceries = [
    {
        id: 1,
        name: "Milk",
        price: 2.99
    },
    {
        id: 2,
        name: "Bacon",
        price: 3.99
    },
    {
        id: 3,
        name: "Eggs",
        price: 1.99
    }
]

// GET - /api/groceries - return all groceries
app.get("/api/groceries", (req, res) => {
    try {
        res.json(groceries);
    } catch (error) {
        console.log(error);
    }
})

// GET - /api/groceries/:id - return a single grocery item by id
app.get("/api/groceries/:id", (req, res) => {
    try {
        // get the id from the request
        const id = req.params.id;

        // find the grocery item by id
        const grocery = groceries.find(
            (grocery) => grocery.id === parseInt(id)
        )

        console.log(grocery);

        // if the grocery item is not found
        if (!grocery) {
            res.status(404).send("Grocery item not found");
        }

        // return the grocery item
        res.status(200).json(grocery);
    } catch (error) {
        console.log(error);
    }
})

// POST - /api/groceries - create a new grocery item
app.post("/api/groceries", (req, res) => {
    try {
        // create a new id
        const id = groceries.length + 1;

        // destructure the request body
        const { name, price } = req.body;

        // create a new grocery item
        const newGrocery = {
            id,
            name,
            price
        }

        // add the new grocery item to the array
        groceries.push(newGrocery);

        // return the new grocery item
        res.status(201).json(newGrocery);
    } catch (error) {
        console.log(error);
    }
})

// PUT - /api/groceries/:id - update a grocery item by id
app.put("/api/groceries/:id", (req, res) => {
    try {
        // get the id from the request
        const id = req.params.id;

        // find the grocery item by id
        const grocery = groceries.find(
            (grocery) => grocery.id === parseInt(id)
        )

        // if the grocery item is not found
        if (!grocery) {
            res.status(404).send("Grocery item not found");
        }

        // update the grocery item
        grocery.name = req.body.name;
        grocery.price = req.body.price;

        // return the grocery item
        res.status(200).json(grocery);
    } catch (error) {
        console.log(error);
    }
})

// DELETE - /api/groceries/:id - delete a grocery item by id
app.delete("/api/groceries/:id", (req, res) => {
    try {
        // get the id from the request
        const id = req.params.id;

        // find the grocery item by id
        const grocery = groceries.find(
            (grocery) => grocery.id === parseInt(id)
        )

        // if the grocery item is not found
        if (!grocery) {
            res.status(404).send("Grocery item not found");
        }

        // remove the grocery item from the array
        groceries = groceries.filter(
            (grocery) => grocery.id !== parseInt(id)
        )

        // return the grocery item
        res.status(200).json(grocery);
    } catch (error) {
        console.log(error);
    }
})

// check for cookies
app.get('/api/cookies', function (req, res) {
    // Cookies that have not been signed
    console.log('Cookies: ', req.cookies)

    // Cookies that have been signed
    console.log('Signed Cookies: ', req.signedCookies)
})

// set a cookie
app.get("/api/set-cookie", (req, res) => {
    try {
        res.cookie(
            "username",
            "John Doe",
            {
                maxAge: 1000 * 60 * 60 * 24,
                httpOnly: true,
            }
        )
        res.status(200).send("Cookie set");
    } catch (error) {
        console.log(error);
    }
})

// create a signed cookie
app.get("/api/set-signed-cookie", (req, res) => {
    try {
        res.cookie(
            "authToken",
            "1234567890",
            {
                maxAge: 1000 * 60 * 60 * 24,
                httpOnly: true,
                signed: true
            }
        )
        res.status(200).send("Signed cookie set");
    } catch (error) {
        console.log(error);
    }
})

// clear a cookie
app.get("/api/clear-cookie", (req, res) => {
    try {
        res.clearCookie("username");
        res.status(200).send("Cookie cleared");
    } catch (error) {
        console.log(error);
    }
})

// route 404 not found
app.use((req, res) => {
    res.status(404).send("404 Not Found");
})

// make it listen on the port
app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
});