Dynamic Link Generation in NextJS

Let's say we have a file with user data:

export default users = [
	{
		id: 1,
		name: 'name1',
		surn: 'surn1',
	},
	{
		id: 2,
		name: 'name2',
		surn: 'surn2',
	},
	{
		id: 3,
		name: 'name3',
		surn: 'surn3',
	},
];

Let's create two components. The first component will show a list of users with links to their detailed description. The second component will display this detailed description.

Let the URL /users/list display the list of all users, and the URL /users/show/:id - a specific user by their id.

To do this, we will create the following file structure:

/app/
- /users/
  - users.js
  - /list/
    - page.jsx
  - /show/[id]/
    - page.jsx

Let's create the first component, in which we will dynamically generate links in a loop, substituting the id of each user into them:

import users from '../users.js';
import Link from 'next/link';

export default function List() {
	let list = users.map(user => {
		return <li>
			<Link href={`/users/show/${user.id}`}>
				{user.name}
			</Link>
		</li>;
	});
	
	return <ul>
		{list}
	</ul>;
}

Let's create a component to display a specific user by their id:

import users from '../../users.js';

export default function User({params}) {
	let user = users[params.id];
	
	return <div>
		<span>{user.id}</span>
		<span>{user.name}</span>
		<span>{user.surn}</span>
	</div>;
}

Given the following array:

let prods = [
	{
		id: 1,
		name: 'prod1',
		cost: 100,
		desc: 'desc1',
	},
	{
		id: 2,
		name: 'prod2',
		cost: 200,
		desc: 'desc2',
	},
	{
		id: 3,
		name: 'prod3',
		cost: 300,
		desc: 'desc3',
	},
];

Create two components. Let the first one show a list of products as links to the full product description. Let the second component show the detailed product description.

Make it so that if a non-existent product id is passed in the URL, a 404 error is displayed on the screen.