@yoroi/swap/lib/module/helpers/getPtPrice.js

The Swap package of Yoroi SDK

"use strict";

import { isRight, time } from '@yoroi/common';
export const getPtPrice = (primaryTokenInfo, api) => {
  // TODO: react-query now has persistance, we can drop it here and move to client.
  const priceCache = {};
  return async id => {
    if (primaryTokenInfo.id === id) return 1;
    const cached = priceCache[id];
    const now = Date.now();
    if (cached && now - cached.timestamp < time.minutes(5)) {
      return cached.price;
    }
    const price = await api.estimate({
      tokenIn: primaryTokenInfo.id,
      tokenOut: id,
      // NOTE: arbritraty to return a price
      amountIn: 50,
      slippage: 0
    }).then(res => isRight(res) ? res.value.data.netPrice : 0);
    priceCache[id] = {
      price,
      timestamp: now
    };
    return price;
  };
};
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