import * as isoly from "isoly"

export type Fee = {
	interchange: number
	network?: number
	intergiro: number
	total: number
}

export namespace Fee {
	export function is(value: any | Fee): value is Fee {
		return (
			typeof value == "object" &&
			"interchange" in value &&
			typeof value.interchange == "number" &&
			"network" in value &&
			(value.network == undefined || typeof value.network == "number") &&
			"intergiro" in value &&
			typeof value.intergiro == "number" &&
			typeof value.total == "number"
		)
	}
	export function upgrade(value: number | { scheme: number; total: number } | Fee, currency: isoly.Currency): Fee {
		let result: Fee
		if (is(value))
			result = value
		else if (typeof value == "number")
			result = { interchange: 0, intergiro: 0, total: value }
		else
			result = {
				interchange: value.scheme,
				intergiro: isoly.Currency.subtract(currency, value.total, value.scheme),
				total: value.total,
			}
		return result
	}
}