schemaFile

#GraphQL schema

enum ProductSortingField {
  PRODUCTNAME
  PRODUCTPRICE
  PRODUCTINVENTORY
  PRODUCTID
}

enum ProductSortingOrder {
  ASCENDING
  DESCENDING
}

type Product {
  productId: Int!
  productName: String!
  productPrice: Float!
  productInventory: Int! 
}

type ShoppingCart {
  shoppingCartId: Int!
  shoppingCartValue: Int!
  shoppingCartItems: [OrderListing]!
  shoppingCartKey: String!
}

type OrderListing {
  orderListingId: Int!
  product: Product!
  productCount: Int!
  shoppingCart: ShoppingCart!
}

type Query {
  product(productId: Int!): Product
  allProducts(
      sortBy: ProductSortingField = PRODUCTPRICE,
      sortOrder: ProductSortingOrder = ASCENDING,
      inStockOnly: Boolean = false,
      ): [Product]!

  shoppingCart(): ShoppingCart!
  shoppingCartIsEmpty(): Boolean!
}

type Mutation {
  createProduct(productName: String!, productPrice: Float!, productInventory: Int!):
    productId, productName, productPrice, productInventory, errors
  updateProduct(
        productId: Int!,
        productInventory: Int = None,
        productName: String = None, 
        productPrice: Float = None): 
    productId, productName, productPrice, productInventory, errors

  deleteProduct(productId: Int!):
    productId, productName, productPrice, productInventory, errors

  addProductToCart(productId: Int!, productCount: Int = 1):
      shoppingCart!, orderListing, errors
  removeProductFromCart(productId: Int!, productCount: Int = 1):
      shoppingCart!, errors
  clearShoppingCart():
      shoppingCart!
  checkOutShoppingCart():
      totalSpend!, shoppingCart!
}