import * as isoly from "isoly"
import * as model from "@payfunc/model-card"
import * as utilities from "../../utilities"

export type Network = Partial<
	Record<
		model.Card.Scheme,
		{
			fixed?: number | (Partial<Record<isoly.CountryCode.Alpha2 | "eea", number>> & { other: number })
			percentage?: number
		}
	>
>

export namespace Network {
	export function apply(
		gross: number,
		rate: number,
		area?: isoly.CountryCode.Alpha2,
		network?: Network[model.Card.Scheme],
		precision = 4
	): number {
		const factor = network?.percentage ?? 0
		const fixed =
			typeof network?.fixed == "object"
				? (area && network.fixed[area]) ??
				  (area && isoly.CountryCode.Alpha2.isEEA(area) && network.fixed.eea
						? network.fixed["eea"]
						: network.fixed["other"])
				: network?.fixed ?? 0
		return utilities.add(
			precision,
			utilities.multiply(precision, Math.abs(gross), factor),
			utilities.multiply(precision, fixed, rate)
		)
	}
}