import { BigDecimalish, BigDecimal } from '@nadohq/utils';
import { SpotProduct } from '../common/types/productTypes.cjs';

/**
 * Calculate amount total borrowed for a product
 */
declare function calcTotalBorrowed(totalBorrowsNormalized: BigDecimalish, cumulativeBorrowsMultiplierX18: BigDecimalish): BigDecimal;
/**
 * Calculate amount total deposited for a product.
 */
declare function calcTotalDeposited(totalDepositsNormalized: BigDecimalish, cumulativeDepositsMultiplierX18: BigDecimalish): BigDecimal;
/**
 * Calculates utilization ratio = abs(total borrowed / total deposited)
 *
 * @param product Spot product
 */
declare function calcUtilizationRatio(product: SpotProduct): BigDecimal;
/**
 * Calculates per-second borrow interest rate for a product. For example, a returned rate of 0.1 indicates 10% borrower
 * interest. The calculation for interest rate is as follows:
 *
 * If utilization ratio > inflection:
 *  annual rate = (1 - utilization ratio) / (1 - inflection) * interestLargeCap + interestFloor + interestSmallCap
 *
 * If utilization ratio < inflection:
 *  annual rate = utilization * interestSmallCap / inflection + utilization
 *
 * The returned rate is annual rate / 31536000 seconds per year.
 *
 * @param product Spot product
 */
declare function calcBorrowRatePerSecond(product: SpotProduct): BigDecimal;
/**
 * Calculates borrower interest rate compounded for a period of time.
 *
 * @param product Spot product
 * @param seconds Number of seconds for the time period
 */
declare function calcBorrowRateForTimeRange(product: SpotProduct, seconds: BigDecimalish, minDepositRate: BigDecimalish): BigDecimal;
/**
 * Calculate depositor interest rate compounded for a period of time.
 *
 * @param product Spot product
 * @param seconds Number of seconds for the time period
 * @param interestFeeFrac Fraction of paid borrower interest that is paid as a fee (0.2 = 20% fee)
 */
declare function calcRealizedDepositRateForTimeRange(product: SpotProduct, seconds: BigDecimalish, interestFeeFrac: BigDecimalish, minDepositRate: BigDecimalish): BigDecimal;

export { calcBorrowRateForTimeRange, calcBorrowRatePerSecond, calcRealizedDepositRateForTimeRange, calcTotalBorrowed, calcTotalDeposited, calcUtilizationRatio };