import {
  CREDITS_PER_PRODUCT_SCAN,
  MAX_SCAN_PRODUCTS,
} from '../../service/catalog-quality/catalog-quality.constants';
import {
  formatCredits,
  generatedFieldsCostCredits,
} from '../../lib/credit-costs';

/**
 * What a new check costs: it samples up to the scan limit from the catalog
 * and bills every product it scores, so a small catalog pays less.
 *
 * @returns {string} The price the button prints, e.g. ``up to 50 credits``.
 */
export const newCheckCost = (): string =>
  `up to ${formatCredits(MAX_SCAN_PRODUCTS * CREDITS_PER_PRODUCT_SCAN)}`;

/**
 * What re-running a check costs: the same products again, at least one
 * product's worth, as the agent bills it.
 *
 * @param {number} products - Products the check being re-run scored.
 * @returns {string} The price the button prints, e.g. ``12 credits``.
 */
export const rerunCost = (products: number): string =>
  formatCredits(Math.max(1, products) * CREDITS_PER_PRODUCT_SCAN);

/**
 * What a bulk improve costs: every field it writes, for every product it
 * covers. A run over the whole audit skips products gone from the catalog,
 * so its price is a ceiling; one product's price is exact.
 *
 * @param {number} products - Products the run covers.
 * @param {number} fields - Fields written per product; at least one is billed.
 * @param {boolean} single - The run is scoped to one product.
 * @returns {string} The price the button prints.
 */
export const bulkImproveCost = (
  products: number,
  fields: number,
  single: boolean
): string => {
  const credits = generatedFieldsCostCredits(Math.max(1, products), fields);

  return single ? formatCredits(credits) : `up to ${formatCredits(credits)}`;
};