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

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

/**
 * Builds a GraphQL type used by a Link field's `type` field. The resulting type
 * can be created using Gatsby's `createTypes` action.
 */
// TODO: Move typename to Dependencies (create in `buildDependencies.ts`).
export const buildLinkTypeEnumType: RTE.ReaderTaskEither<
	Dependencies,
	never,
	gatsby.GatsbyGraphQLType
> = pipe(
	RTE.ask<Dependencies>(),
	RTE.chain((deps) =>
		buildEnumType({
			name: deps.globalNodeHelpers.createTypeName("LinkTypeEnum"),
			values: { Any: {}, Document: {}, Media: {}, Web: {} },
		}),
	),
);