schema
@link(url: "https://specs.apollo.dev/link/v1.0")
@link(url: "https://specs.apollo.dev/join/v0.3", for: EXECUTION) {
    query: Query
}

directive @join__enumValue(graph: join__Graph!) repeatable on ENUM_VALUE

directive @join__field(
    graph: join__Graph
    requires: join__FieldSet
    provides: join__FieldSet
    type: String
    external: Boolean
    override: String
    usedOverridden: Boolean
) repeatable on FIELD_DEFINITION | INPUT_FIELD_DEFINITION

directive @join__graph(name: String!, url: String!) on ENUM_VALUE

directive @join__implements(
    graph: join__Graph!
    interface: String!
) repeatable on OBJECT | INTERFACE

directive @join__type(
    graph: join__Graph!
    key: join__FieldSet
    extension: Boolean! = false
    resolvable: Boolean! = true
    isInterfaceObject: Boolean! = false
) repeatable on OBJECT | INTERFACE | UNION | ENUM | INPUT_OBJECT | SCALAR

directive @join__unionMember(
    graph: join__Graph!
    member: String!
) repeatable on UNION

directive @link(
    url: String
    as: String
    for: link__Purpose
    import: [link__Import]
) repeatable on SCHEMA

scalar join__FieldSet

enum join__Graph {
    ACCOUNTS
    @join__graph(name: "accounts", url: "https://accounts.demo.starstuff.dev/")
    INVENTORY
    @join__graph(
        name: "inventory"
        url: "https://inventory.demo.starstuff.dev/"
    )
    PRODUCTS
    @join__graph(name: "products", url: "https://products.demo.starstuff.dev/")
    REVIEWS
    @join__graph(name: "reviews", url: "https://reviews.demo.starstuff.dev/")
}

scalar link__Import

enum link__Purpose {
    SECURITY
    EXECUTION
}

type Product
@join__type(graph: INVENTORY, key: "upc")
@join__type(graph: PRODUCTS, key: "upc")
@join__type(graph: REVIEWS, key: "upc") {
    upc: String!
    weight: Int
    @join__field(graph: INVENTORY, external: true)
    @join__field(graph: PRODUCTS)
    price: Int
    @join__field(graph: INVENTORY, external: true)
    @join__field(graph: PRODUCTS)
    inStock: Boolean @join__field(graph: INVENTORY)
    shippingEstimate: Int @join__field(graph: INVENTORY, requires: "price weight")
    name: String @join__field(graph: PRODUCTS)
    reviews: [Review] @join__field(graph: REVIEWS)
}

type Query
@join__type(graph: ACCOUNTS)
@join__type(graph: INVENTORY)
@join__type(graph: PRODUCTS)
@join__type(graph: REVIEWS) {
    me: User @join__field(graph: ACCOUNTS)
    topProducts(first: Int = 5): [Product] @join__field(graph: PRODUCTS)
}

type Review @join__type(graph: REVIEWS, key: "id") {
    id: ID!
    body: String
    author: User @join__field(graph: REVIEWS, provides: "username")
    product: Product @join__field(graph: REVIEWS)
}

type User
@join__type(graph: ACCOUNTS, key: "id")
@join__type(graph: REVIEWS, key: "id") {
    id: ID!
    name: String @join__field(graph: ACCOUNTS)
    username: String
    @join__field(graph: ACCOUNTS)
    @join__field(graph: REVIEWS, external: true)
    reviews: [Review] @join__field(graph: REVIEWS)
}
