import { nullable } from "@prismicio/types-internal/lib/validators/function"
import * as t from "io-ts"

const codec = t.exact(
	t.intersection([
		t.type({
			title: t.string,
			description: t.string,
		}),
		t.partial({
			imageURL: nullable(t.string),
		}),
	]),
)

export type DocumentMetadata = t.TypeOf<typeof codec>
export const DocumentMetadata = {
	empty: {
		title: "Untitled document",
		description: "",
		imageURL: undefined,
	},
	codec,
}