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NextJS Ecommerce App

This is a simple ecommerce app built with NextJS and Postgres.

Setup with Docker (recommended)

docker-compose up

Setup without Docker

  1. Install Postgres
  2. Install Node 16
  3. Install Yarn
  4. Install dependencies
yarn

Running the app

yarn dev

Understanding

  1. Run the sample application.
  2. Click the example button on the home page and read through the documentation.
  3. Don't forget to commit and push your code before the test is over!

Tasks

1. Server Side Pagination

The /products page displays a list of products. Currently, all products are loaded at once. This is not scalable. We need to implement server side pagination to load products in batches.

Modify the /api/product endpoint to support server side pagination. You must paginate through the database in your query as well, as we are scaling our API to support tens of thousands of products.

The API code lives in pages/api/product/index.ts.

The GetProductsQuery and GetProductsResponse types are defined in pages/api/product/index.ts. You should not have to change these types, as the frontend expects this specific request and response format.

Ensure your API handles all edge cases gracefully such as invalid query parameters.

2. Reviews

2.1 Review Migration

Create a reviews database table. A review should have a product id, a rating (1 - 5 stars, inclusive), timestamp, and a comment.

2.2 Create Review API

The ProductDetailPage component displays a list of reviews for a product. Currently, no reviews are loaded or created. We need to implement the review API to support loading and creating reviews.

Modify the POST /api/review endpoint to support creating a review for a product.

The API code lives in pages/api/review.ts.

The CreateReviewData and CreateReviewResponse types are defined in pages/api/review.ts. You should not have to change these types, as the frontend expects this specific request and response format.

Ensure your API handles all edge cases gracefully such as invalid query parameters. Once you have completed this, make sure you can create a review in the frontend.

2.3 Get Review API

Modify the GET /api/review endpoint to support fetching a list of reviews for a product.

The API code lives in pages/api/review.ts.

The GetReviewsQuery and GetReviewsResponse types are defined in pages/api/review.ts. You should not have to change these types, as the frontend expects this specific request and response format.

Ensure your API handles all edge cases gracefully such as invalid query parameters.

Once you have completed this, make sure you can load reviews in the frontend.

Requirements

  • Docker-Compose
  • Postgres
  • Node 16