feat(trading): gas fee estimation for withdraw transaction

libs/assets/src/lib/assets-data-provider.ts

@@ -7,6 +7,7 @@ import { AssetsDocument, type AssetsQuery } from './__generated__/Assets';
 import { AssetStatus } from '@vegaprotocol/types';
 import { type Asset } from './asset-data-provider';
 import { DENY_LIST } from './constants';
+import { type AssetFieldsFragment } from './__generated__/Asset';
 
 export interface BuiltinAssetSource {
   __typename: 'BuiltinAsset';
@@ -89,3 +90,24 @@ export const useEnabledAssets = () => {
     variables: undefined,
   });
 };
+
+/** Wrapped ETH symbol */
+const WETH = 'WETH';
+type WETHDetails = Pick<AssetFieldsFragment, 'symbol' | 'decimals' | 'quantum'>;
+/**
+ * Tries to find WETH asset configuration on Vega in order to provide its
+ * details, otherwise it returns hardcoded values.
+ */
+export const useWETH = (): WETHDetails => {
+  const { data } = useAssetsDataProvider();
+  if (data) {
+    const weth = data.find((a) => a.symbol.toUpperCase() === WETH);
+    if (weth) return weth;
+  }
+
+  return {
+    symbol: WETH,
+    decimals: 18,
+    quantum: '500000000000000', // 1 WETH ~= 2000 qUSD
+  };
+};

libs/i18n/src/locales/en/withdraws.json

@@ -47,5 +47,11 @@
   "Withdrawals of {{threshold}} {{symbol}} or more will be delayed for {{delay}}.": "Withdrawals of {{threshold}} {{symbol}} or more will be delayed for {{delay}}.",
   "Withdrawals ready": "Withdrawals ready",
   "You have no assets to withdraw": "You have no assets to withdraw",
-  "Your funds have been unlocked for withdrawal - <0>View in block explorer<0>": "Your funds have been unlocked for withdrawal - <0>View in block explorer<0>"
+  "Your funds have been unlocked for withdrawal - <0>View in block explorer<0>": "Your funds have been unlocked for withdrawal - <0>View in block explorer<0>",
+  "Gas fee": "Gas fee",
+  "Estimated gas fee for the withdrawal transaction (refreshes each 15 seconds)": "Estimated gas fee for the withdrawal transaction (refreshes each 15 seconds)",
+  "It seems that the current gas prices are exceeding the amount you're trying to withdraw": "It seems that the current gas prices are exceeding the amount you're trying to withdraw",
+  "The current gas price range": "The current gas price range",
+  "min": "min",
+  "max": "max"
 }

libs/utils/src/lib/format/ether.spec.ts

@@ -0,0 +1,42 @@
+import BigNumber from 'bignumber.js';
+import { EtherUnit, formatEther, unitiseEther } from './ether';
+
+describe('unitiseEther', () => {
+  it.each([
+    [1, '1', EtherUnit.wei],
+    [999, '999', EtherUnit.wei],
+    [1000, '1', EtherUnit.kwei],
+    [9999, '9.999', EtherUnit.kwei],
+    [10000, '10', EtherUnit.kwei],
+    [999999, '999.999', EtherUnit.kwei],
+    [1000000, '1', EtherUnit.mwei],
+    [999999999, '999.999999', EtherUnit.mwei],
+    [1000000000, '1', EtherUnit.gwei],
+    ['999999999999999999', '999999999.999999999', EtherUnit.gwei], // max gwei
+    [1e18, '1', EtherUnit.ether], // 1 ETH
+    [1234e18, '1234', EtherUnit.ether], // 1234 ETH
+  ])('unitises %s to [%s, %s]', (value, expectedOutput, expectedUnit) => {
+    const [output, unit] = unitiseEther(value);
+    expect(output.toFixed()).toEqual(expectedOutput);
+    expect(unit).toEqual(expectedUnit);
+  });
+
+  it('unitises to requested unit', () => {
+    const [output, unit] = unitiseEther(1, EtherUnit.kwei);
+    expect(output).toEqual(BigNumber(0.001));
+    expect(unit).toEqual(EtherUnit.kwei);
+  });
+});
+
+describe('formatEther', () => {
+  it.each([
+    [1, EtherUnit.wei, '1 wei'],
+    [12, EtherUnit.kwei, '12 kwei'],
+    [123, EtherUnit.gwei, '123 gwei'],
+    [3, EtherUnit.ether, '3 ETH'],
+    [234.67776331, EtherUnit.gwei, '235 gwei'],
+    [12.12, EtherUnit.gwei, '12 gwei'],
+  ])('formats [%s, %s] to "%s"', (value, unit, expectedOutput) => {
+    expect(formatEther([BigNumber(value), unit])).toEqual(expectedOutput);
+  });
+});

libs/utils/src/lib/format/ether.ts

@@ -0,0 +1,84 @@
+import { formatNumber, toBigNum } from './number';
+import type BigNumber from 'bignumber.js';
+
+export enum EtherUnit {
+  /** 1 wei = 10^-18 ETH */
+  wei = '0',
+  /** 1 kwei = 1000 wei */
+  kwei = '3',
+  /** 1 mwei = 1000 kwei */
+  mwei = '6',
+  /** 1 gwei = 1000 kwei */
+  gwei = '9',
+
+  // other denominations:
+  // microether = '12', // aka szabo, µETH
+  // milliether = '15', // aka finney, mETH
+
+  /** 1 ETH = 1B gwei = 10^18 wei */
+  ether = '18',
+}
+
+export const etherUnitMapping: Record<EtherUnit, string> = {
+  [EtherUnit.wei]: 'wei',
+  [EtherUnit.kwei]: 'kwei',
+  [EtherUnit.mwei]: 'mwei',
+  [EtherUnit.gwei]: 'gwei',
+  // [EtherUnit.microether]: 'µETH', // szabo
+  // [EtherUnit.milliether]: 'mETH', // finney
+  [EtherUnit.ether]: 'ETH',
+};
+
+type InputValue = string | number | BigNumber;
+type UnitisedTuple = [value: BigNumber, unit: EtherUnit];
+
+/**
+ * Converts given raw value to the unitised tuple of amount and unit
+ */
+export const unitiseEther = (
+  input: InputValue,
+  forceUnit?: EtherUnit
+): UnitisedTuple => {
+  const units = Object.values(EtherUnit).reverse();
+
+  let value = toBigNum(input, Number(forceUnit || EtherUnit.ether));
+  let unit = forceUnit || EtherUnit.ether;
+
+  if (!forceUnit) {
+    for (const u of units) {
+      const v = toBigNum(input, Number(u));
+      value = v;
+      unit = u;
+      if (v.isGreaterThanOrEqualTo(1)) break;
+    }
+  }
+
+  return [value, unit];
+};
+
+/**
+ * `formatNumber` wrapper for unitised ether values (attaches unit name)
+ */
+export const formatEther = (
+  input: UnitisedTuple,
+  decimals = 0,
+  noUnit = false
+) => {
+  const [value, unit] = input;
+  const num = formatNumber(value, decimals);
+  const unitName = noUnit ? '' : etherUnitMapping[unit];
+
+  return `${num} ${unitName}`.trim();
+};
+
+/**
+ * Utility function that formats given raw amount as ETH.
+ * Example:
+ *   Given value of `1` this will return `0.000000000000000001 ETH`
+ */
+export const asETH = (input: InputValue, noUnit = false) =>
+  formatEther(
+    unitiseEther(input, EtherUnit.ether),
+    Number(EtherUnit.ether),
+    noUnit
+  );

libs/utils/src/lib/format/index.ts

@@ -4,3 +4,4 @@ export * from './range';
 export * from './size';
 export * from './strings';
 export * from './trigger';
+export * from './ether';

libs/utils/src/lib/format/number.spec.ts

@@ -13,6 +13,7 @@ import {
   toDecimal,
   toNumberParts,
   formatNumberRounded,
+  toQUSD,
 } from './number';
 
 describe('number utils', () => {
@@ -282,3 +283,22 @@ describe('formatNumberRounded', () => {
     );
   });
 });
+
+describe('toQUSD', () => {
+  it.each([
+    [0, 0, 0],
+    [1, 1, 1],
+    [1, 10, 0.1],
+    [1, 100, 0.01],
+    // real life examples
+    [1000000, 1000000, 1], // USDC -> 1 USDC ~= 1 qUSD
+    [500000, 1000000, 0.5], // USDC => 0.6 USDC ~= 0.5 qUSD
+    [1e18, 1e18, 1], // VEGA -> 1 VEGA ~= 1 qUSD
+    [123.45e18, 1e18, 123.45], // VEGA -> 1 VEGA ~= 1 qUSD
+    [1e18, 5e14, 2000], // WETH -> 1 WETH ~= 2000 qUSD
+    [1e9, 5e14, 0.000002], // gwei -> 1 gwei ~= 0.000002 qUSD
+    [50000e9, 5e14, 0.1], // gwei -> 50000 gwei ~= 0.1 qUSD
+  ])('converts (%d, %d) to %d qUSD', (amount, quantum, expected) => {
+    expect(toQUSD(amount, quantum).toNumber()).toEqual(expected);
+  });
+});

libs/utils/src/lib/format/number.ts

@@ -26,7 +26,7 @@ export function toDecimal(numberOfDecimals: number) {
 }
 
 export function toBigNum(
-  rawValue: string | number,
+  rawValue: string | number | BigNumber,
   decimals: number
 ): BigNumber {
   const divides = new BigNumber(10).exponentiatedBy(decimals);
@@ -233,3 +233,24 @@ export const formatNumberRounded = (
 
   return value;
 };
+
+/**
+ * Converts given amount in one asset (determined by raw amount
+ * and quantum values) to qUSD.
+ * @param amount The raw amount
+ * @param quantum The quantum value of the asset.
+ */
+export const toQUSD = (
+  amount: string | number | BigNumber,
+  quantum: string | number
+) => {
+  const value = new BigNumber(amount);
+  let q = new BigNumber(quantum);
+
+  if (q.isNaN() || q.isLessThanOrEqualTo(0)) {
+    q = new BigNumber(1);
+  }
+
+  const qUSD = value.dividedBy(q);
+  return qUSD;
+};

libs/web3/src/index.ts

@@ -19,6 +19,7 @@ export * from './lib/use-ethereum-transaction';
 export * from './lib/use-ethereum-withdraw-approval-toasts';
 export * from './lib/use-ethereum-withdraw-approvals-manager';
 export * from './lib/use-ethereum-withdraw-approvals-store';
+export * from './lib/use-gas-price';
 export * from './lib/use-get-withdraw-delay';
 export * from './lib/use-get-withdraw-threshold';
 export * from './lib/use-token-contract';

libs/web3/src/lib/use-gas-price.ts

@@ -0,0 +1,111 @@
+import { useEffect, useState } from 'react';
+import { useWeb3React } from '@web3-react/core';
+import { useEthereumConfig } from './use-ethereum-config';
+import BigNumber from 'bignumber.js';
+
+const DEFAULT_INTERVAL = 15000; // 15 seconds
+
+/**
+ * These are the hex values of the collateral bridge contract methods.
+ *
+ * Collateral bridge address: 0x23872549cE10B40e31D6577e0A920088B0E0666a
+ * Etherscan: https://etherscan.io/address/0x23872549cE10B40e31D6577e0A920088B0E0666a#writeContract
+ */
+export enum ContractMethod {
+  DEPOSIT_ASSET = '0xf7683932',
+  EXEMPT_DEPOSITOR = '0xb76fbb75',
+  GLOBAL_RESUME = '0xd72ed529',
+  GLOBAL_STOP = '0x9dfd3c88',
+  LIST_ASSET = '0x0ff3562c',
+  REMOVE_ASSET = '0xc76de358',
+  REVOKE_EXEMPT_DEPOSITOR = '0x6a1c6fa4',
+  SET_ASSET_LIMITS = '0x41fb776d',
+  SET_WITHDRAW_DELAY = '0x5a246728',
+  WITHDRAW_ASSET = '0x3ad90635',
+}
+
+export type GasData = {
+  /** The base (minimum) price of 1 unit of gas */
+  basePrice: BigNumber;
+  /** The maximum price of 1 unit of gas */
+  maxPrice: BigNumber;
+  /** The amount of gas (units) needed to process a transaction */
+  gas: BigNumber;
+};
+
+type Provider = NonNullable<ReturnType<typeof useWeb3React>['provider']>;
+
+const retrieveGasData = async (
+  provider: Provider,
+  account: string,
+  contractAddress: string,
+  contractMethod: ContractMethod
+) => {
+  try {
+    const data = await provider.getFeeData();
+    const estGasAmount = await provider.estimateGas({
+      to: account,
+      from: contractAddress,
+      data: contractMethod,
+    });
+
+    if (data.lastBaseFeePerGas && data.maxFeePerGas) {
+      return {
+        // converts also form ethers BigNumber to "normal" BigNumber
+        basePrice: BigNumber(data.lastBaseFeePerGas.toString()),
+        maxPrice: BigNumber(data.maxFeePerGas.toString()),
+        gas: BigNumber(estGasAmount.toString()),
+      };
+    }
+  } catch (err) {
+    // NOOP - could not get the estimated gas or the fee data from
+    // the network. This could happen if there's an issue with transaction
+    // request parameters (e.g. to/from mismatch)
+  }
+
+  return undefined;
+};
+
+/**
+ * Gets the "current" gas price from the ethereum network.
+ */
+export const useGasPrice = (
+  method: ContractMethod,
+  interval = DEFAULT_INTERVAL
+): GasData | undefined => {
+  const [gas, setGas] = useState<GasData | undefined>(undefined);
+  const { provider, account } = useWeb3React();
+  const { config } = useEthereumConfig();
+
+  useEffect(() => {
+    if (!provider || !config || !account) return;
+
+    const retrieve = async () => {
+      retrieveGasData(
+        provider,
+        account,
+        config.collateral_bridge_contract.address,
+        method
+      ).then((gasData) => {
+        if (gasData) {
+          setGas(gasData);
+        }
+      });
+    };
+    retrieve();
+
+    // Retrieves another estimation and prices in [interval] ms.
+    let i: ReturnType<typeof setInterval>;
+    if (interval > 0) {
+      i = setInterval(() => {
+        retrieve();
+      }, interval);
+    }
+
+    return () => {
+      if (i) clearInterval(i);
+    };
+  }, [account, config, interval, method, provider]);
+
+  return gas;
+};

libs/withdraws/src/lib/withdraw-form.tsx

@@ -27,6 +27,7 @@ import { useForm, Controller, useWatch } from 'react-hook-form';
 import { WithdrawLimits } from './withdraw-limits';
 import {
   ETHEREUM_EAGER_CONNECT,
+  type GasData,
   useWeb3ConnectStore,
   useWeb3Disconnect,
 } from '@vegaprotocol/web3';
@@ -56,6 +57,7 @@ export interface WithdrawFormProps {
   delay: number | undefined;
   onSelectAsset: (assetId: string) => void;
   submitWithdraw: (withdrawal: WithdrawalArgs) => void;
+  gasPrice?: GasData;
 }
 
 const WithdrawDelayNotification = ({
@@ -117,6 +119,7 @@ export const WithdrawForm = ({
   delay,
   onSelectAsset,
   submitWithdraw,
+  gasPrice,
 }: WithdrawFormProps) => {
   const t = useT();
   const ethereumAddress = useEthereumAddress();
@@ -247,6 +250,7 @@ export const WithdrawForm = ({
               delay={delay}
               balance={balance}
               asset={selectedAsset}
+              gas={gasPrice}
             />
           </div>
         )}