# Example Firebase Data Connect schema
type Query {
  hello(name: String): String
  wrapAny(input: Any): Any
}

# Example Firebase Data Connect connector
query SayHello @auth(level: PUBLIC, insecureReason: "Anyone can say hello.") {
  hello(name: "Firebase")
  wrapAny(input: {foo: "bar", num: 42, nested: {a: 1, b: 2}})
}

// Example Firebase Functions code
import {setGlobalOptions} from "firebase-functions";
import {
  FirebaseContext,
  onGraphRequest,
} from "firebase-functions/dataconnect/graphql";

const opts = {
  schemaFilePath: "dataconnect/schema_resolver/schema.gql",
  resolvers: {
    query: {
      // This resolver function populates the data for the "hello" field
      // defined in your GraphQL schema located at schemaFilePath.
      hello(
        _parent: unknown,
        args: Record<string, unknown>,
        _contextValue: FirebaseContext,
        _info: unknown
      ): string {
        return `Hello ${args.name}!`;
      },
      wrapAny(
        _parent: unknown,
        args: Record<string, unknown>,
        _contextValue: FirebaseContext,
        _info: unknown
      ): any {
        // This resolver wraps around the input and returns it with some additional fields.
        return {input: args.input, field: "value", nestedField: {subField: 123}};
      }
    },
  },
};

export const resolver = onGraphRequest(opts);

# Example request and response

$ curl -H "Content-Type: application/json"   "https://staging-firebasedataconnect.sandbox.googleapis.com/v1/projects/test-rosalyntan/locations/us-central1/services/test-rosalyntan/connectors/example:executeQuery" --data "{\"operationName\": \"SayHello\"}"

{
  "data": {
    "hello": "Hello Firebase!",
    "wrapAny": {
      "input": {
        "nested": {
          "b": 2,
          "a": 1
        },
        "num": 42,
        "foo": "bar"
      },
      "nestedField": {
        "subField": 123
      },
      "field": "value"
    }
  }
}