GraphQL_API

Overview

This is a simple GraphQL API built with Apollo Server and Express.js. It provides functionality for querying and mutating data related to products and orders.

Setup

The server is set up in server.js using Apollo Server and Express.js. The GraphQL schema and resolvers are loaded from the *.graphql and *.resolvers.js files respectively. The server listens on port 3000 and exposes the GraphQL API at the /graphql endpoint.

Schema

The schema is defined in the *.graphql files. It includes the following types:

• Product: Represents a product with an id, description, price, and reviews.
• Review: Represents a review with a rating and comment.
• Order: Represents an order with a date, subtotal, and items.
• OrderItem: Represents an order item with a product and quantity.

The schema also includes the following queries and mutations:

• Query:

• products: Returns all products.
• productsByPrice(min: Float!, max: Float!): Returns products within a price range.
• product(id: ID!): Returns a product by ID.
• orders: Returns all orders.

• Mutation:

• addNewProduct(id: ID!, description: String!, price: Float!): Adds a new product.
• addNewProductReview(id: ID!, rating: Int!, comment: String): Adds a new product review.

Resolvers

The resolvers are defined in the *.resolvers.js files. They provide the logic for fetching and mutating data based on the queries and mutations defined in the schema.

• products.resolvers.js: Contains resolvers for the products, productsByPrice, product, addNewProduct, and addNewProductReview queries and mutations.
• orders.resolvers.js: Contains the resolver for the orders query.

Data

The data for products and orders is stored in memory in the products.model.js and orders.model.js files respectively. The data includes a list of products and a list of orders, each with their respective properties as defined in the schema. The models also include functions for fetching and mutating the data.

Notes

Before adding Apollo Server package I tested the queries inside graphiQL

Once you get Apollo you can test your queries, mutations and much more inside this cool front-end itnerface.