From 9f10fe8c970b556113fd944304c4ffb3169eca4e Mon Sep 17 00:00:00 2001
From: Etienne Dusseault <etienne.dusseault@gmail.com>
Date: Mon, 30 Aug 2021 18:01:59 -0500
Subject: [PATCH] swaps-gas-customization (#11938)

---
 .../swaps-gas-customization-modal.stories.js  | 157 ++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100644 ui/pages/swaps/swaps-gas-customization-modal/swaps-gas-customization-modal.stories.js

diff --git a/ui/pages/swaps/swaps-gas-customization-modal/swaps-gas-customization-modal.stories.js b/ui/pages/swaps/swaps-gas-customization-modal/swaps-gas-customization-modal.stories.js
new file mode 100644
index 000000000..c8d018fb2
--- /dev/null
+++ b/ui/pages/swaps/swaps-gas-customization-modal/swaps-gas-customization-modal.stories.js
@@ -0,0 +1,157 @@
+import React, { useEffect, useState } from 'react';
+import { Provider } from 'react-redux';
+import { number } from '@storybook/addon-knobs';
+import configureStore from '../../../store/store';
+import testData from '../../../../.storybook/test-data';
+import { formatETHFee } from '../../../helpers/utils/formatters';
+import {
+  addHexes,
+  getValueFromWeiHex,
+  getWeiHexFromDecimalValue,
+  sumHexWEIsToRenderableFiat,
+} from '../../../helpers/utils/conversions.util';
+import { ETH } from '../../../helpers/constants/common';
+import { calcGasTotal, isBalanceSufficient } from '../../send/send.utils';
+import { conversionLessThan } from '../../../../shared/modules/conversion.utils';
+import GasModalPageContainer from './swaps-gas-customization-modal.component';
+
+// Using Test Data For Redux
+const store = configureStore(testData);
+
+export default {
+  title: 'Swap',
+  decorators: [(story) => <Provider store={store}>{story()}</Provider>],
+};
+
+// Convert Hex Wei to Decimal ETH
+const sumHexWEIsToRenderableEth = (hexWEIs, currencySymbol = 'ETH') => {
+  const hexWEIsSum = hexWEIs.filter(Boolean).reduce(addHexes);
+  return formatETHFee(
+    getValueFromWeiHex({
+      value: hexWEIsSum,
+      fromCurrency: currencySymbol,
+      toCurrency: currencySymbol,
+      numberOfDecimals: 6,
+    }),
+    currencySymbol,
+  );
+};
+
+export const GasModalPageContainerComponent = () => {
+  // Send Amount Data
+  const hexWei = getWeiHexFromDecimalValue({
+    value: String(number('Send Amount (this should be static)', 0.01)),
+    fromCurrency: ETH,
+    fromDenomination: ETH,
+  });
+
+  // ETH Balance
+  const balanceHexWei = getWeiHexFromDecimalValue({
+    value: String(number('Wallet Balance (this should be static)', 1.582717)),
+    fromCurrency: ETH,
+    fromDenomination: ETH,
+  });
+
+  const sendAmount = sumHexWEIsToRenderableEth([hexWei, '0x0']);
+  const [gasLimit, setGasLimit] = useState('5208');
+  const [gasPrice, setGasPrice] = useState('ee6b2800');
+  const [transactionFee, setTransactionFee] = useState('');
+  const [totalETH, setTotalETH] = useState('');
+  const [totalFiat, setTotalFiat] = useState('');
+  const [isInsufficientBalance, setIsInsufficientBalance] = useState(false);
+
+  const { metamask } = store.getState();
+  const { currentCurrency, conversionRate } = metamask;
+
+  console.log('metamask', store.getState());
+
+  useEffect(() => {
+    // Transfer Fee
+    const customGasTotal = calcGasTotal(gasLimit, gasPrice);
+    setTransactionFee(sumHexWEIsToRenderableEth(['0x0', customGasTotal]));
+
+    // New Total ETH
+    setTotalETH(sumHexWEIsToRenderableEth([hexWei, customGasTotal, '']));
+
+    // New Total Fiat
+    setTotalFiat(
+      sumHexWEIsToRenderableFiat(
+        [hexWei, customGasTotal, ''],
+        currentCurrency,
+        conversionRate,
+      ),
+    );
+
+    // Check If Balance is Sufficient
+    setIsInsufficientBalance(
+      !isBalanceSufficient({
+        amount: hexWei,
+        gasTotal: customGasTotal,
+        balance: balanceHexWei,
+        conversionRate,
+      }),
+    );
+  }, [
+    gasPrice,
+    gasLimit,
+    hexWei,
+    totalETH,
+    conversionRate,
+    currentCurrency,
+    totalFiat,
+    balanceHexWei,
+  ]);
+
+  // Check If Gas Price Is Too Low
+  const shouldShowCustomPriceTooLowWarning = () => {
+    const average = number('Average Gas Price', 2);
+
+    const customGasPrice = gasPrice;
+
+    if (!customGasPrice || average === undefined) {
+      return false;
+    }
+
+    const customPriceRisksSwapFailure = conversionLessThan(
+      {
+        value: customGasPrice,
+        fromNumericBase: 'hex',
+        fromDenomination: 'WEI',
+        toDenomination: 'GWEI',
+      },
+      { value: average, fromNumericBase: 'dec' },
+    );
+
+    return customPriceRisksSwapFailure;
+  };
+
+  return (
+    <GasModalPageContainer
+      insufficientBalance={isInsufficientBalance}
+      showCustomPriceTooLowWarning={shouldShowCustomPriceTooLowWarning()}
+      minimumGasLimit={21000}
+      infoRowProps={{
+        sendAmount,
+        transactionFee,
+        newTotalEth: totalETH,
+        newTotalFiat: totalFiat,
+      }}
+      gasPriceButtonGroupProps={{
+        buttonDataLoading: true,
+      }}
+      setSwapsCustomizationModalPrice={(newPrice) => {
+        console.log('updatedPrice', newPrice);
+        setGasPrice(newPrice);
+      }}
+      setSwapsCustomizationModalLimit={(newLimit) => {
+        console.log('updatedLimit', newLimit);
+        setGasLimit(newLimit);
+      }}
+      customGasPrice={gasPrice}
+      customGasLimit={gasLimit}
+      disableSave={
+        isInsufficientBalance || shouldShowCustomPriceTooLowWarning()
+      }
+    />
+  );
+};