@ledgerhq/live-common/src/platform/filters.ts

Common ground for the Ledger Live apps

import { makeRe } from "minimatch";
import { AppPlatform, PlatformAccount, PlatformCurrency } from "./types";
import { isPlatformTokenCurrency } from "./helpers";

export type FilterParams = {
  branches?: string[];
  platform?: AppPlatform;
  private?: boolean;
  apiVersion?: string[] | string;
  llVersion?: string;
  lang?: string;
};

export type AccountFilters = {
  currencies?: string[];
};

export function filterPlatformAccounts(
  accounts: PlatformAccount[],
  filters: AccountFilters,
): PlatformAccount[] {
  const filterCurrencyRegexes = filters.currencies
    ? filters.currencies.map(filter => makeRe(filter))
    : null;

  return accounts.filter(account => {
    if (
      filterCurrencyRegexes &&
      !filterCurrencyRegexes.some(regex => account.currency.match(regex))
    ) {
      return false;
    }
    return true;
  });
}

export type CurrencyFilters = {
  includeTokens?: boolean;
  currencies?: string[];
};

export function filterPlatformCurrencies(
  currencies: PlatformCurrency[],
  filters: CurrencyFilters,
): PlatformCurrency[] {
  const filterCurrencyRegexes = filters.currencies
    ? filters.currencies.map(filter => makeRe(filter))
    : null;

  return currencies.filter(currency => {
    if (!filters.includeTokens && isPlatformTokenCurrency(currency)) {
      return false;
    }

    if (filterCurrencyRegexes && !filterCurrencyRegexes.some(regex => currency.id.match(regex))) {
      return false;
    }

    return true;
  });
}