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Merge pull request #327 from SwaprHQ/liq-2-add-swapr-v3-to-eco-router…
…-on-swapr-sdk Add swapr liquidity v3 support on eco router
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,230 @@ | ||
| import type { BaseProvider } from '@ethersproject/providers' | ||
| import dayjs from 'dayjs' | ||
|
|
||
| import { Fraction, validateAndParseAddress } from '@uniswap/sdk-core' | ||
| import invariant from 'tiny-invariant' | ||
|
|
||
| import { CurrencyAmount, Percent, Price, TokenAmount } from '../../fractions' | ||
|
|
||
| import { TradeWithSwapTransaction } from '../interfaces/trade' | ||
| import { RoutablePlatform } from '../routable-platform' | ||
| import { getProvider, tryGetChainId } from '../utils' | ||
| import { ChainId, ONE, TradeType } from '../../../constants' | ||
|
|
||
| import { UnsignedTransaction } from 'ethers' | ||
| import { TradeOptions } from '../interfaces/trade-options' | ||
| import { parseUnits } from '@ethersproject/units' | ||
| import { SWAPR_ALGEBRA_CONTRACTS } from './constants' | ||
| import { getQuoterContract, getRouterContract } from './contracts' | ||
| import { getRoutes } from './routes' | ||
| import { maximumSlippage as defaultMaximumSlippage } from '../constants' | ||
| import { Currency } from '../../currency' | ||
| import { Token, WXDAI } from '../../token' | ||
|
|
||
| interface SwaprV3ConstructorParams { | ||
| maximumSlippage: Percent | ||
| inputAmount: CurrencyAmount | ||
| outputAmount: CurrencyAmount | ||
| tradeType: TradeType | ||
| chainId: number | ||
| priceImpact: Percent | ||
| fee: Percent | ||
| } | ||
|
|
||
| export interface SwaprV3GetQuoteParams { | ||
| amount: CurrencyAmount | ||
| quoteCurrency: Currency | ||
| tradeType: TradeType | ||
| maximumSlippage?: Percent | ||
| recipient?: string | ||
| } | ||
|
|
||
| export class SwaprV3Trade extends TradeWithSwapTransaction { | ||
| public constructor({ | ||
| inputAmount, | ||
| outputAmount, | ||
| maximumSlippage, | ||
| priceImpact, | ||
| tradeType, | ||
| chainId, | ||
| fee, | ||
| }: SwaprV3ConstructorParams) { | ||
| super({ | ||
| details: undefined, | ||
| type: tradeType, | ||
| inputAmount, | ||
| outputAmount, | ||
| maximumSlippage, | ||
| platform: RoutablePlatform.SWAPR_V3, | ||
| chainId, | ||
| executionPrice: new Price({ | ||
| baseCurrency: inputAmount.currency, | ||
| quoteCurrency: outputAmount.currency, | ||
| denominator: inputAmount.raw, | ||
| numerator: outputAmount.raw, | ||
| }), | ||
| priceImpact, | ||
| fee, | ||
| approveAddress: SWAPR_ALGEBRA_CONTRACTS['router'], | ||
| }) | ||
| } | ||
|
|
||
| static async getQuote( | ||
| { amount, quoteCurrency, tradeType, maximumSlippage }: SwaprV3GetQuoteParams, | ||
| provider?: BaseProvider | ||
| ): Promise<SwaprV3Trade | null> { | ||
| const chainId = tryGetChainId(amount, quoteCurrency) | ||
| invariant(chainId, 'SwaprV3Trade.getQuote: chainId is required') | ||
|
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| maximumSlippage = maximumSlippage ?? defaultMaximumSlippage | ||
| provider = provider ?? getProvider(chainId) | ||
|
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| invariant(amount.currency.address, `SwaprV3Trade.getQuote: amount.currency.address is required`) | ||
| const tokenIn = Currency.isNative(amount.currency) | ||
| ? WXDAI[ChainId.GNOSIS] | ||
| : new Token( | ||
| ChainId.GNOSIS, | ||
| amount.currency.address, | ||
| amount.currency.decimals, | ||
| amount.currency.symbol, | ||
| amount.currency.name | ||
| ) | ||
|
|
||
| invariant(quoteCurrency.address, `SwaprV3Trade.getQuote: quoteCurrency.address is required`) | ||
| const tokenOut = Currency.isNative(quoteCurrency) | ||
| ? WXDAI[ChainId.GNOSIS] | ||
| : new Token( | ||
| ChainId.GNOSIS, | ||
| quoteCurrency.address, | ||
| quoteCurrency.decimals, | ||
| quoteCurrency.symbol, | ||
| quoteCurrency.name | ||
| ) | ||
|
|
||
| invariant( | ||
| (await provider.getNetwork()).chainId == chainId, | ||
| `SwaprV3Trade.getQuote: currencies chainId does not match provider's chainId` | ||
| ) | ||
|
|
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| const routes = await getRoutes(tokenIn, tokenOut, chainId) | ||
|
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| const fee = | ||
| routes?.length > 0 && routes[0].pools.length > 0 | ||
| ? new Percent(routes[0].pools[0].fee.toString(), '1000000') | ||
| : new Percent('0', '0') | ||
|
|
||
| if (tradeType === TradeType.EXACT_INPUT) { | ||
| const quotedAmountOut = await getQuoterContract() | ||
| .callStatic.quoteExactInputSingle( | ||
| tokenIn.address, | ||
| tokenOut.address, | ||
| parseUnits(amount.toSignificant(), amount.currency.decimals), | ||
| 0 | ||
| ) | ||
| .catch((error) => { | ||
| console.error(`Error sending quoteExactInputSingle transaction: ${error}`) | ||
| return null | ||
| }) | ||
|
|
||
| if (quotedAmountOut) { | ||
| return new SwaprV3Trade({ | ||
| maximumSlippage, | ||
| inputAmount: amount, | ||
| outputAmount: new TokenAmount(tokenOut, quotedAmountOut), | ||
| tradeType: tradeType, | ||
| chainId: chainId, | ||
| priceImpact: new Percent('0', '1000'), | ||
| fee, | ||
| }) | ||
| } | ||
| } else { | ||
| const quotedAmountIn = await getQuoterContract() | ||
| .callStatic.quoteExactOutputSingle( | ||
| tokenOut.address, | ||
| amount.currency.address, | ||
| parseUnits(amount.toSignificant(), amount.currency.decimals), | ||
| 0 | ||
| ) | ||
| .catch((error) => { | ||
| console.error(`Error sending quoteExactOutputSingle transaction: ${error}`) | ||
| return null | ||
| }) | ||
|
|
||
| if (quotedAmountIn) { | ||
| return new SwaprV3Trade({ | ||
| maximumSlippage, | ||
| inputAmount: new TokenAmount(tokenOut, quotedAmountIn), | ||
| outputAmount: amount, | ||
| tradeType: tradeType, | ||
| chainId: chainId, | ||
| priceImpact: new Percent('0', '1000'), | ||
| fee: fee, | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| return null | ||
| } | ||
|
|
||
| public minimumAmountOut(): CurrencyAmount { | ||
| if (this.tradeType === TradeType.EXACT_OUTPUT) { | ||
| return this.outputAmount | ||
| } else { | ||
| const slippageAdjustedAmountOut = new Fraction(ONE) | ||
| .add(this.maximumSlippage as Fraction) | ||
| .invert() | ||
| .multiply(this.outputAmount.raw).quotient | ||
| return this.outputAmount instanceof TokenAmount | ||
| ? new TokenAmount(this.outputAmount.token, slippageAdjustedAmountOut) | ||
| : CurrencyAmount.nativeCurrency(slippageAdjustedAmountOut, this.chainId) | ||
| } | ||
| } | ||
|
|
||
| public maximumAmountIn(): CurrencyAmount { | ||
| if (this.tradeType === TradeType.EXACT_INPUT) { | ||
| return this.inputAmount | ||
| } else { | ||
| const slippageAdjustedAmountIn = new Fraction(ONE) | ||
| .add(this.maximumSlippage as Fraction) | ||
| .multiply(this.inputAmount.raw).quotient | ||
| return this.inputAmount instanceof TokenAmount | ||
| ? new TokenAmount(this.inputAmount.token, slippageAdjustedAmountIn) | ||
| : CurrencyAmount.nativeCurrency(slippageAdjustedAmountIn, this.chainId) | ||
| } | ||
| } | ||
|
|
||
| public async swapTransaction(options: TradeOptions): Promise<UnsignedTransaction> { | ||
| const to: string = validateAndParseAddress(options.recipient) | ||
| const amountIn: string = `0x${this.maximumAmountIn().raw.toString(16)}` | ||
| const amountOut: string = `0x${this.minimumAmountOut().raw.toString(16)}` | ||
| const isTradeExactInput = this.tradeType === TradeType.EXACT_INPUT | ||
| const routerContract = getRouterContract() | ||
|
|
||
| const baseParams = { | ||
| tokenIn: this.inputAmount.currency.address, | ||
| tokenOut: this.outputAmount.currency.address, | ||
| recipient: to, | ||
| deadline: dayjs().add(30, 'm').unix(), | ||
| sqrtPriceLimitX96: 0, | ||
| fee: this.fee, | ||
| } | ||
|
|
||
| const exactInputSingleParams = { | ||
| ...baseParams, | ||
| amountIn: amountIn, | ||
| amountOutMinimum: amountOut, | ||
| } | ||
|
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||
| const exactOutputSingleParams = { | ||
| ...baseParams, | ||
| amountOut: amountOut, | ||
| amountInMaximum: amountIn, | ||
| } | ||
|
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| const methodName = isTradeExactInput ? 'exactInputSingle' : 'exactOutputSingle' | ||
| const params = isTradeExactInput ? exactInputSingleParams : exactOutputSingleParams | ||
| const populatedTransaction = await routerContract.populateTransaction[methodName](params) | ||
|
|
||
| return populatedTransaction | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| export * from './swapr-algebra-quoter' | ||
| export * from './swapr-algebra-router' | ||
| export * from './swapr-algebra-pool' |
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