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__graph(name: String!, url: String!) 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__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

scalar join__FieldSet

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

scalar link__Import

enum link__Purpose {
    """
    `SECURITY` features provide metadata necessary to securely resolve fields.
    """
    SECURITY

    """
    `EXECUTION` features provide metadata necessary for operation execution.
    """
    EXECUTION
}

enum join__Graph {
    LINK @join__graph(name: "link", url: "")
    LIST @join__graph(name: "list", url: "")
    PRICE @join__graph(name: "price", url: "")
    PRODUCTS @join__graph(name: "products", url: "")
}

type Product
    @join__type(graph: LINK, key: "id")
    @join__type(graph: LINK, key: "id pid")
    @join__type(graph: LIST, key: "id pid")
    @join__type(graph: PRICE, key: "id pid category{id tag}")
    @join__type(graph: PRODUCTS, key: "id", extension: true) {
    id: String!
    pid: String
        @join__field(graph: LINK, type: "String!")
        @join__field(graph: LIST, type: "String")
        @join__field(graph: PRICE, type: "String")
    category: Category @join__field(graph: PRICE) @join__field(graph: PRODUCTS)
    price: Price @join__field(graph: PRICE)
}

type ProductList
    @join__type(graph: LIST, key: "products{id pid}")
    @join__type(
        graph: PRICE
        key: "products{id pid category{id tag}} selected{id}"
    )
    @join__type(graph: PRODUCTS, key: "products{id}") {
    products: [Product!]!
    first: Product @join__field(graph: LIST) @join__field(graph: PRICE)
    selected: Product @join__field(graph: LIST) @join__field(graph: PRICE)
}

type Category
    @join__type(graph: PRICE, key: "id tag")
    @join__type(graph: PRODUCTS, key: "id") {
    id: String!
    tag: String
    mainProduct: Product! @join__field(graph: PRODUCTS)
}

type Price @join__type(graph: PRICE) {
    price: Float!
}

type Query
    @join__type(graph: LINK)
    @join__type(graph: LIST)
    @join__type(graph: PRICE)
    @join__type(graph: PRODUCTS) {
    topProducts: ProductList! @join__field(graph: PRODUCTS)
}
