import { balance } from '../../config/gameBalance.js';
import { clamp } from '../../shared/validators.js';

/**
 * Formula del mercato dinamico (blueprint §9):
 *   rawPrice = basePrice * economyModifier * demand / max(supply, minSupplyDivisor) * eventModifier
 * con rawPrice limitato a [basePrice*minPriceFactor, basePrice*maxPriceFactor].
 */
export function computePrices(
  basePrice: number,
  economyModifier: number,
  demand: number,
  supply: number,
  eventModifier: number,
): { buyPrice: number; sellPrice: number } {
  const m = balance.market;
  const raw =
    basePrice * economyModifier * (demand / Math.max(supply, m.minSupplyDivisor)) * eventModifier;
  const clamped = clamp(raw, basePrice * m.minPriceFactor, basePrice * m.maxPriceFactor);
  return {
    buyPrice: Math.round(clamped * m.buyMargin),
    sellPrice: Math.round(clamped * m.sellMargin),
  };
}

/** Mantiene demand/supply nei limiti consentiti. */
export function clampDemandSupply(value: number): number {
  return clamp(value, balance.market.minDemandSupply, balance.market.maxDemandSupply);
}