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19 changes: 19 additions & 0 deletions
19
packages/contracts-rfq/contracts/interfaces/IFastBridgeV2Errors.sol
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// SPDX-License-Identifier: MIT | ||
pragma solidity ^0.8.0; | ||
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interface IFastBridgeV2Errors { | ||
error AmountIncorrect(); | ||
error ChainIncorrect(); | ||
error MsgValueIncorrect(); | ||
error SenderIncorrect(); | ||
error StatusIncorrect(); | ||
error ZeroAddress(); | ||
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error DeadlineExceeded(); | ||
error DeadlineNotExceeded(); | ||
error DeadlineTooShort(); | ||
error DisputePeriodNotPassed(); | ||
error DisputePeriodPassed(); | ||
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error TransactionRelayed(); | ||
} |
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108 changes: 108 additions & 0 deletions
108
packages/rest-api/src/controllers/bridgeLimitsController.ts
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import { validationResult } from 'express-validator' | ||
import { BigNumber } from 'ethers' | ||
import { parseUnits } from '@ethersproject/units' | ||
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import { Synapse } from '../services/synapseService' | ||
import { tokenAddressToToken } from '../utils/tokenAddressToToken' | ||
import { formatBNToString } from '../utils/formatBNToString' | ||
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export const bridgeLimitsController = async (req, res) => { | ||
const errors = validationResult(req) | ||
if (!errors.isEmpty()) { | ||
return res.status(400).json({ errors: errors.array() }) | ||
} | ||
try { | ||
const { fromChain, fromToken, toChain, toToken } = req.query | ||
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const fromTokenInfo = tokenAddressToToken(fromChain, fromToken) | ||
const toTokenInfo = tokenAddressToToken(toChain, toToken) | ||
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const upperLimitValue = parseUnits('1000000', fromTokenInfo.decimals) | ||
const upperLimitBridgeQuotes = await Synapse.allBridgeQuotes( | ||
Number(fromChain), | ||
Number(toChain), | ||
fromTokenInfo.address, | ||
toTokenInfo.address, | ||
upperLimitValue | ||
) | ||
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const lowerLimitValues = ['0.01', '10'] | ||
let lowerLimitBridgeQuotes = null | ||
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for (const limit of lowerLimitValues) { | ||
const lowerLimitAmount = parseUnits(limit, fromTokenInfo.decimals) | ||
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lowerLimitBridgeQuotes = await Synapse.allBridgeQuotes( | ||
Number(fromChain), | ||
Number(toChain), | ||
fromTokenInfo.address, | ||
toTokenInfo.address, | ||
lowerLimitAmount | ||
) | ||
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if (lowerLimitBridgeQuotes && lowerLimitBridgeQuotes.length > 0) { | ||
break | ||
} | ||
} | ||
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const maxBridgeAmountQuote = upperLimitBridgeQuotes.reduce( | ||
(maxQuote, currentQuote) => { | ||
const currentMaxAmount = currentQuote.maxAmountOut | ||
const maxAmount = maxQuote ? maxQuote.maxAmountOut : BigNumber.from(0) | ||
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return currentMaxAmount.gt(maxAmount) ? currentQuote : maxQuote | ||
}, | ||
null | ||
) | ||
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const minBridgeAmountQuote = lowerLimitBridgeQuotes.reduce( | ||
(minQuote, currentQuote) => { | ||
const currentFeeAmount = currentQuote.feeAmount | ||
const minFeeAmount = minQuote ? minQuote.feeAmount : null | ||
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return !minFeeAmount || currentFeeAmount.lt(minFeeAmount) | ||
? currentQuote | ||
: minQuote | ||
}, | ||
null | ||
) | ||
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if (!maxBridgeAmountQuote || !minBridgeAmountQuote) { | ||
return res.json({ | ||
maxOriginAmount: null, | ||
minOriginAmount: null, | ||
}) | ||
} | ||
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const maxAmountOriginQueryTokenOutInfo = tokenAddressToToken( | ||
toChain, | ||
maxBridgeAmountQuote.destQuery.tokenOut | ||
) | ||
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const minAmountOriginQueryTokenOutInfo = tokenAddressToToken( | ||
fromChain, | ||
minBridgeAmountQuote.originQuery.tokenOut | ||
) | ||
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const maxOriginAmount = formatBNToString( | ||
maxBridgeAmountQuote.maxAmountOut, | ||
maxAmountOriginQueryTokenOutInfo.decimals | ||
) | ||
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const minOriginAmount = formatBNToString( | ||
minBridgeAmountQuote.feeAmount, | ||
minAmountOriginQueryTokenOutInfo.decimals | ||
) | ||
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return res.json({ | ||
maxOriginAmount, | ||
minOriginAmount, | ||
}) | ||
} catch (err) { | ||
res.status(500).json({ | ||
error: | ||
'An unexpected error occurred in /bridgeLimits. Please try again later.', | ||
details: err.message, | ||
}) | ||
} | ||
} |
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