import * as gatsby from "gatsby";
import * as RTE from "fp-ts/ReaderTaskEither";
import { pipe } from "fp-ts/function";

import { Dependencies } from "../types";

import { buildNamedInferredNodeType } from "./buildNamedInferredNodeType";

/**
 * Builds a GraphQL object type using Gatsby's Node interface with field
 * inference enabled using the environment's `buildObjectType` function. The
 * type name is generated using the environment's node helpers and the `path` parameter.
 *
 * @param path - List of field names from the root object to the field to which
 *   the inferred node type will be assigned. Determines the type's name.
 *
 * @returns Return type of the envionrment's `buildObjectType` function.
 */
export const buildInferredNodeType = (
	path: string[],
): RTE.ReaderTaskEither<Dependencies, never, gatsby.GatsbyGraphQLObjectType> =>
	pipe(
		RTE.asks((deps: Dependencies) => deps.nodeHelpers.createTypeName(path)),
		RTE.chain(buildNamedInferredNodeType),
	);