update velora config

Author: dglowinski

src/swapService/config/unichain.ts

@@ -35,6 +35,7 @@ const unichainRoutingConfig: ChainRoutingConfig = [
           "enso",
           "okx-dex",
           "magpie",
+          "paraswap",
         ],
       },
     },

src/swapService/strategies/balmySDK/customSourceList.ts

@@ -19,6 +19,7 @@ import { CustomOKXDexQuoteSource } from "./sources/okxDexQuoteSource"
 import { CustomOneInchQuoteSource } from "./sources/oneInchQuoteSource"
 import { CustomOogaboogaQuoteSource } from "./sources/oogaboogaQuoteSource"
 import { CustomOpenOceanQuoteSource } from "./sources/openOceanQuoteSource"
+import { CustomParaswapQuoteSource } from "./sources/paraswapQuoteSource"
 import { CustomPendleQuoteSource } from "./sources/pendleQuoteSource"
 import { CustomUniswapQuoteSource } from "./sources/uniswapQuoteSource"
 
@@ -40,6 +41,7 @@ const customSources = {
   kyberswap: new CustomKyberswapQuoteSource(),
   enso: new CustomEnsoQuoteSource(),
   "okx-dex": new CustomOKXDexQuoteSource(),
+  paraswap: new CustomParaswapQuoteSource(),
   oku_bob_icecreamswap: new CustomOkuQuoteSource(
     "icecreamswap",
     "IceCreamSwap",

src/swapService/strategies/balmySDK/sources/paraswapQuoteSource.ts

@@ -0,0 +1,135 @@
+import { Chains, calculateDeadline } from "@balmy/sdk"
+import { AlwaysValidConfigAndContextSource } from "@balmy/sdk/dist/services/quotes/quote-sources/base/always-valid-source"
+import type {
+  BuildTxParams,
+  QuoteParams,
+  QuoteSourceMetadata,
+  SourceQuoteResponse,
+  SourceQuoteTransaction,
+} from "@balmy/sdk/dist/services/quotes/quote-sources/types"
+import {
+  addQuoteSlippage,
+  calculateAllowanceTarget,
+  failed,
+} from "@balmy/sdk/dist/services/quotes/quote-sources/utils"
+import qs from "qs"
+
+const PARASWAP_METADATA: QuoteSourceMetadata<ParaswapSupport> = {
+  name: "Velora",
+  supports: {
+    chains: [
+      Chains.ETHEREUM.chainId,
+      Chains.POLYGON.chainId,
+      Chains.BNB_CHAIN.chainId,
+      Chains.AVALANCHE.chainId,
+      Chains.FANTOM.chainId,
+      Chains.ARBITRUM.chainId,
+      Chains.OPTIMISM.chainId,
+      Chains.POLYGON_ZKEVM.chainId,
+      Chains.BASE.chainId,
+      Chains.GNOSIS.chainId,
+      130, // unichain
+    ],
+    swapAndTransfer: true,
+    buyOrders: true,
+  },
+  logoURI: "ipfs://QmVtj4RwZ5MMfKpbfv8qXksb5WYBJsQXkaZXLq7ipvMNW5",
+}
+type ParaswapSupport = { buyOrders: true; swapAndTransfer: true }
+type ParaswapConfig = { sourceAllowlist?: string[]; sourceDenylist?: string[] }
+type ParaswapData = { tx: SourceQuoteTransaction }
+export class CustomParaswapQuoteSource extends AlwaysValidConfigAndContextSource<
+  ParaswapSupport,
+  ParaswapConfig,
+  ParaswapData
+> {
+  getMetadata(): QuoteSourceMetadata<ParaswapSupport> {
+    return PARASWAP_METADATA
+  }
+
+  async quote({
+    components: { fetchService },
+    request: {
+      chainId,
+      sellToken,
+      buyToken,
+      order,
+      accounts: { takeFrom, recipient },
+      config: { timeout, slippagePercentage, txValidFor },
+      external,
+    },
+    config,
+  }: QuoteParams<ParaswapSupport, ParaswapConfig>): Promise<
+    SourceQuoteResponse<ParaswapData>
+  > {
+    const {
+      sellToken: { decimals: srcDecimals },
+      buyToken: { decimals: destDecimals },
+    } = await external.tokenData.request()
+    const queryParams = {
+      network: chainId,
+      srcToken: sellToken,
+      destToken: buyToken,
+      amount: order.type === "sell" ? order.sellAmount : order.buyAmount,
+      side: order.type.toUpperCase(),
+      srcDecimals,
+      destDecimals,
+      includeDEXS: config.sourceAllowlist,
+      excludeDEXS: config.sourceDenylist,
+      slippage: slippagePercentage * 100,
+      userAddress: takeFrom,
+      receiver: takeFrom !== recipient ? recipient : undefined,
+      partner: config.referrer?.name,
+      partnerAddress: config.referrer?.address,
+      partnerFeeBps: 0,
+      deadline: calculateDeadline(txValidFor),
+      version: "6.2",
+    }
+    const queryString = qs.stringify(queryParams, {
+      skipNulls: true,
+      arrayFormat: "comma",
+    })
+    const url = `https://api.paraswap.io/swap?${queryString}`
+    const response = await fetchService.fetch(url, { timeout })
+    if (!response.ok) {
+      failed(
+        PARASWAP_METADATA,
+        chainId,
+        sellToken,
+        buyToken,
+        await response.text(),
+      )
+    }
+    const {
+      priceRoute,
+      txParams: { to, data, value },
+    } = await response.json()
+    const quote = {
+      sellAmount: BigInt(priceRoute.srcAmount),
+      buyAmount: BigInt(priceRoute.destAmount),
+      // estimatedGas: BigInt(priceRoute.gasCost),
+      allowanceTarget: calculateAllowanceTarget(
+        sellToken,
+        priceRoute.tokenTransferProxy,
+      ),
+      customData: {
+        tx: {
+          to,
+          calldata: data,
+          value: BigInt(value ?? 0),
+        },
+      },
+    }
+
+    return addQuoteSlippage(quote, order.type, slippagePercentage)
+  }
+
+  async buildTx({
+    request,
+  }: BuildTxParams<
+    ParaswapConfig,
+    ParaswapData
+  >): Promise<SourceQuoteTransaction> {
+    return request.customData.tx
+  }
+}