import type { StaticWidget } from "@prismicio/types-internal/lib/customtypes"
import { either } from "fp-ts"
import { pipe } from "fp-ts/lib/function"
import * as t from "io-ts"

import { WidgetDef } from "./fields/WidgetDef"

const codec = t.strict({
	id: t.string,
	definitions: t.array(WidgetDef),
})

export type CustomTypeDef = {
	customTypeId: string
	fields: Record<string, StaticWidget>
}

export const CustomTypeDef = new t.Type<CustomTypeDef>(
	"CustomTypeDef",
	(u: unknown): u is CustomTypeDef => typeof u === "object" && u !== null && "customTypeId" in u,
	(u: unknown) => {
		return pipe(
			codec.decode(u),
			either.map(({ id, definitions }): CustomTypeDef => {
				return {
					customTypeId: id,
					fields: definitions.reduce((acc, { key, def }) => {
						return { ...acc, [key]: def }
					}, {}),
				}
			}),
		)
	},
	(c) => c,
)