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@uniswap/smart-order-router

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"use strict"; var __importDefault = (this && this.__importDefault) || function (mod) { return (mod && mod.__esModule) ? mod : { "default": mod }; }; Object.defineProperty(exports, "__esModule", { value: true }); exports.LegacyRouter = void 0; const bignumber_1 = require("@ethersproject/bignumber"); const logger_1 = require("@ethersproject/logger"); const router_sdk_1 = require("@uniswap/router-sdk"); const sdk_core_1 = require("@uniswap/sdk-core"); const v3_sdk_1 = require("@uniswap/v3-sdk"); const lodash_1 = __importDefault(require("lodash")); const token_provider_1 = require("../../providers/token-provider"); const util_1 = require("../../util"); const amounts_1 = require("../../util/amounts"); const log_1 = require("../../util/log"); const routes_1 = require("../../util/routes"); const alpha_router_1 = require("../alpha-router"); const router_1 = require("../router"); const bases_1 = require("./bases"); // Interface defaults to 2. const MAX_HOPS = 2; /** * Replicates the router implemented in the V3 interface. * Code is mostly a copy from https://github.com/Uniswap/uniswap-interface/blob/0190b5a408c13016c87e1030ffc59326c085f389/src/hooks/useBestV3Trade.ts#L22-L23 * with React/Redux hooks removed, and refactoring to allow re-use in other routers. */ class LegacyRouter { constructor({ chainId, multicall2Provider, poolProvider, quoteProvider, tokenProvider, }) { this.chainId = chainId; this.multicall2Provider = multicall2Provider; this.poolProvider = poolProvider; this.quoteProvider = quoteProvider; this.tokenProvider = tokenProvider; } async route(amount, quoteCurrency, swapType, swapConfig, partialRoutingConfig) { if (swapType == sdk_core_1.TradeType.EXACT_INPUT) { return this.routeExactIn(amount.currency, quoteCurrency, amount, swapConfig, partialRoutingConfig); } return this.routeExactOut(quoteCurrency, amount.currency, amount, swapConfig, partialRoutingConfig); } async routeExactIn(currencyIn, currencyOut, amountIn, swapConfig, routingConfig) { const tokenIn = currencyIn.wrapped; const tokenOut = currencyOut.wrapped; const routes = await this.getAllRoutes(tokenIn, tokenOut, routingConfig); const routeQuote = await this.findBestRouteExactIn(amountIn, tokenOut, routes, routingConfig); if (!routeQuote) { return null; } const trade = this.buildTrade(currencyIn, currencyOut, sdk_core_1.TradeType.EXACT_INPUT, routeQuote); return { quote: routeQuote.quote, quoteGasAdjusted: routeQuote.quote, route: [routeQuote], estimatedGasUsed: bignumber_1.BigNumber.from(0), estimatedGasUsedQuoteToken: amounts_1.CurrencyAmount.fromFractionalAmount(tokenOut, 0, 1), estimatedGasUsedUSD: amounts_1.CurrencyAmount.fromFractionalAmount(token_provider_1.DAI_MAINNET, 0, 1), gasPriceWei: bignumber_1.BigNumber.from(0), trade, methodParameters: swapConfig ? Object.assign(Object.assign({}, this.buildMethodParameters(trade, swapConfig)), { to: (0, util_1.SWAP_ROUTER_02_ADDRESSES)(this.chainId) }) : undefined, blockNumber: bignumber_1.BigNumber.from(0), }; } async routeExactOut(currencyIn, currencyOut, amountOut, swapConfig, routingConfig) { const tokenIn = currencyIn.wrapped; const tokenOut = currencyOut.wrapped; const routes = await this.getAllRoutes(tokenIn, tokenOut, routingConfig); const routeQuote = await this.findBestRouteExactOut(amountOut, tokenIn, routes, routingConfig); if (!routeQuote) { return null; } const trade = this.buildTrade(currencyIn, currencyOut, sdk_core_1.TradeType.EXACT_OUTPUT, routeQuote); return { quote: routeQuote.quote, quoteGasAdjusted: routeQuote.quote, route: [routeQuote], estimatedGasUsed: bignumber_1.BigNumber.from(0), estimatedGasUsedQuoteToken: amounts_1.CurrencyAmount.fromFractionalAmount(tokenIn, 0, 1), estimatedGasUsedUSD: amounts_1.CurrencyAmount.fromFractionalAmount(token_provider_1.DAI_MAINNET, 0, 1), gasPriceWei: bignumber_1.BigNumber.from(0), trade, methodParameters: swapConfig ? Object.assign(Object.assign({}, this.buildMethodParameters(trade, swapConfig)), { to: (0, util_1.SWAP_ROUTER_02_ADDRESSES)(this.chainId) }) : undefined, blockNumber: bignumber_1.BigNumber.from(0), }; } async findBestRouteExactIn(amountIn, tokenOut, routes, routingConfig) { const { routesWithQuotes: quotesRaw } = await this.quoteProvider.getQuotesManyExactIn([amountIn], routes, { blockNumber: routingConfig === null || routingConfig === void 0 ? void 0 : routingConfig.blockNumber, }); const quotes100Percent = lodash_1.default.map(quotesRaw, ([route, quotes]) => { var _a, _b; return `${(0, routes_1.routeToString)(route)} : ${(_b = (_a = quotes[0]) === null || _a === void 0 ? void 0 : _a.quote) === null || _b === void 0 ? void 0 : _b.toString()}`; }); log_1.log.info({ quotes100Percent }, '100% Quotes'); const bestQuote = await this.getBestQuote(routes, quotesRaw, tokenOut, sdk_core_1.TradeType.EXACT_INPUT); return bestQuote; } async findBestRouteExactOut(amountOut, tokenIn, routes, routingConfig) { const { routesWithQuotes: quotesRaw } = await this.quoteProvider.getQuotesManyExactOut([amountOut], routes, { blockNumber: routingConfig === null || routingConfig === void 0 ? void 0 : routingConfig.blockNumber, }); const bestQuote = await this.getBestQuote(routes, quotesRaw, tokenIn, sdk_core_1.TradeType.EXACT_OUTPUT); return bestQuote; } async getBestQuote(routes, quotesRaw, quoteToken, routeType) { log_1.log.debug(`Got ${lodash_1.default.filter(quotesRaw, ([_, quotes]) => !!quotes[0]).length} valid quotes from ${routes.length} possible routes.`); const routeQuotesRaw = []; for (let i = 0; i < quotesRaw.length; i++) { const [route, quotes] = quotesRaw[i]; const { quote, amount } = quotes[0]; if (!quote) { logger_1.Logger.globalLogger().debug(`No quote for ${(0, routes_1.routeToString)(route)}`); continue; } routeQuotesRaw.push({ route, quote, amount }); } if (routeQuotesRaw.length == 0) { return null; } routeQuotesRaw.sort((routeQuoteA, routeQuoteB) => { if (routeType == sdk_core_1.TradeType.EXACT_INPUT) { return routeQuoteA.quote.gt(routeQuoteB.quote) ? -1 : 1; } else { return routeQuoteA.quote.lt(routeQuoteB.quote) ? -1 : 1; } }); const routeQuotes = lodash_1.default.map(routeQuotesRaw, ({ route, quote, amount }) => { return new alpha_router_1.V3RouteWithValidQuote({ route, rawQuote: quote, amount, percent: 100, gasModel: { estimateGasCost: () => ({ gasCostInToken: amounts_1.CurrencyAmount.fromRawAmount(quoteToken, 0), gasCostInUSD: amounts_1.CurrencyAmount.fromRawAmount(token_provider_1.USDC_MAINNET, 0), gasEstimate: bignumber_1.BigNumber.from(0), }), }, sqrtPriceX96AfterList: [], initializedTicksCrossedList: [], quoterGasEstimate: bignumber_1.BigNumber.from(0), tradeType: routeType, quoteToken, v3PoolProvider: this.poolProvider, }); }); for (const rq of routeQuotes) { log_1.log.debug(`Quote: ${rq.amount.toFixed(Math.min(rq.amount.currency.decimals, 2))} Route: ${(0, routes_1.routeToString)(rq.route)}`); } return routeQuotes[0]; } async getAllRoutes(tokenIn, tokenOut, routingConfig) { const tokenPairs = await this.getAllPossiblePairings(tokenIn, tokenOut); const poolAccessor = await this.poolProvider.getPools(tokenPairs, { blockNumber: routingConfig === null || routingConfig === void 0 ? void 0 : routingConfig.blockNumber, }); const pools = poolAccessor.getAllPools(); const routes = this.computeAllRoutes(tokenIn, tokenOut, pools, this.chainId, [], [], tokenIn, MAX_HOPS); log_1.log.info({ routes: lodash_1.default.map(routes, routes_1.routeToString) }, `Computed ${routes.length} possible routes.`); return routes; } async getAllPossiblePairings(tokenIn, tokenOut) { var _a, _b, _c, _d, _e; const common = (_a = (0, bases_1.BASES_TO_CHECK_TRADES_AGAINST)(this.tokenProvider)[this.chainId]) !== null && _a !== void 0 ? _a : []; const additionalA = (_c = (_b = (await (0, bases_1.ADDITIONAL_BASES)(this.tokenProvider))[this.chainId]) === null || _b === void 0 ? void 0 : _b[tokenIn.address]) !== null && _c !== void 0 ? _c : []; const additionalB = (_e = (_d = (await (0, bases_1.ADDITIONAL_BASES)(this.tokenProvider))[this.chainId]) === null || _d === void 0 ? void 0 : _d[tokenOut.address]) !== null && _e !== void 0 ? _e : []; const bases = [...common, ...additionalA, ...additionalB]; const basePairs = lodash_1.default.flatMap(bases, (base) => bases.map((otherBase) => [base, otherBase])); const customBases = (await (0, bases_1.CUSTOM_BASES)(this.tokenProvider))[this.chainId]; const allPairs = (0, lodash_1.default)([ // the direct pair [tokenIn, tokenOut], // token A against all bases ...bases.map((base) => [tokenIn, base]), // token B against all bases ...bases.map((base) => [tokenOut, base]), // each base against all bases ...basePairs, ]) .filter((tokens) => Boolean(tokens[0] && tokens[1])) .filter(([tokenA, tokenB]) => tokenA.address !== tokenB.address && !tokenA.equals(tokenB)) .filter(([tokenA, tokenB]) => { const customBasesA = customBases === null || customBases === void 0 ? void 0 : customBases[tokenA.address]; const customBasesB = customBases === null || customBases === void 0 ? void 0 : customBases[tokenB.address]; if (!customBasesA && !customBasesB) return true; if (customBasesA && !customBasesA.find((base) => tokenB.equals(base))) return false; if (customBasesB && !customBasesB.find((base) => tokenA.equals(base))) return false; return true; }) .flatMap(([tokenA, tokenB]) => { return [ [tokenA, tokenB, v3_sdk_1.FeeAmount.LOW], [tokenA, tokenB, v3_sdk_1.FeeAmount.MEDIUM], [tokenA, tokenB, v3_sdk_1.FeeAmount.HIGH], ]; }) .value(); return allPairs; } computeAllRoutes(tokenIn, tokenOut, pools, chainId, currentPath = [], allPaths = [], startTokenIn = tokenIn, maxHops = 2) { for (const pool of pools) { if (currentPath.indexOf(pool) !== -1 || !pool.involvesToken(tokenIn)) continue; const outputToken = pool.token0.equals(tokenIn) ? pool.token1 : pool.token0; if (outputToken.equals(tokenOut)) { allPaths.push(new router_1.V3Route([...currentPath, pool], startTokenIn, tokenOut)); } else if (maxHops > 1) { this.computeAllRoutes(outputToken, tokenOut, pools, chainId, [...currentPath, pool], allPaths, startTokenIn, maxHops - 1); } } return allPaths; } buildTrade(tokenInCurrency, tokenOutCurrency, tradeType, routeAmount) { const { route, amount, quote } = routeAmount; // The route, amount and quote are all in terms of wrapped tokens. // When constructing the Trade object the inputAmount/outputAmount must // use native currencies if necessary. This is so that the Trade knows to wrap/unwrap. if (tradeType == sdk_core_1.TradeType.EXACT_INPUT) { const amountCurrency = amounts_1.CurrencyAmount.fromFractionalAmount(tokenInCurrency, amount.numerator, amount.denominator); const quoteCurrency = amounts_1.CurrencyAmount.fromFractionalAmount(tokenOutCurrency, quote.numerator, quote.denominator); const routeCurrency = new v3_sdk_1.Route(route.pools, amountCurrency.currency, quoteCurrency.currency); return new router_sdk_1.Trade({ v4Routes: [], v3Routes: [ { routev3: routeCurrency, inputAmount: amountCurrency, outputAmount: quoteCurrency, }, ], v2Routes: [], tradeType: tradeType, }); } else { const quoteCurrency = amounts_1.CurrencyAmount.fromFractionalAmount(tokenInCurrency, quote.numerator, quote.denominator); const amountCurrency = amounts_1.CurrencyAmount.fromFractionalAmount(tokenOutCurrency, amount.numerator, amount.denominator); const routeCurrency = new v3_sdk_1.Route(route.pools, quoteCurrency.currency, amountCurrency.currency); return new router_sdk_1.Trade({ v4Routes: [], v3Routes: [ { routev3: routeCurrency, inputAmount: quoteCurrency, outputAmount: amountCurrency, }, ], v2Routes: [], tradeType: tradeType, }); } } buildMethodParameters(trade, swapConfig) { const { recipient, slippageTolerance, deadline } = swapConfig; const methodParameters = router_sdk_1.SwapRouter.swapCallParameters(trade, { recipient, slippageTolerance, deadlineOrPreviousBlockhash: deadline, // ...(signatureData // ? { // inputTokenPermit: // 'allowed' in signatureData // ? { // expiry: signatureData.deadline, // nonce: signatureData.nonce, // s: signatureData.s, // r: signatureData.r, // v: signatureData.v as any, // } // : { // deadline: signatureData.deadline, // amount: signatureData.amount, // s: signatureData.s, // r: signatureData.r, // v: signatureData.v as any, // }, // } // : {}), }); return methodParameters; } } exports.LegacyRouter = LegacyRouter; //# 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