AugurProject/augur-ui

import { createSelector } from "reselect";
import store from "src/store";
import selectAllMarkets from "modules/markets/selectors/markets-all";

export default function() {
  return selectMarketsTotals(store.getState());
}

export const selectMarketsTotals = createSelector(
  selectAllMarkets,
  allMarkets => {
    const totals = allMarkets.reduce(
      (p, market) => {
        p.numAll += 1;
        if (market.isPendingReport) p.numPendingReports += 1;
        if (market.isFavorite) p.numFavorites += 1;
        return p;
      },
      {
        numAll: 0,
        numFavorites: 0,
        numPendingReports: 0,
        numUnpaginated: 0,
        numFiltered: 0
      }
    );

    totals.numUnpaginated = allMarkets.length;

    return totals;
  }
);