dsa-connectors/test/polygon/paraswap/paraswap.test.ts

import hre from "hardhat";
import { expect } from "chai";
import { abis } from "../../../scripts/constant/abis";
import { addresses } from "../../../scripts/tests/polygon/addresses";
import { deployAndEnableConnector } from "../../../scripts/tests/deployAndEnableConnector";
import { getMasterSigner } from "../../../scripts/tests/getMasterSigner";
import { buildDSAv2 } from "../../../scripts/tests/buildDSAv2";
import {
  ConnectV2ParaswapV5Polygon__factory
} from "../../../typechain";
import { encodeSpells } from "../../../scripts/tests/encodeSpells";
import BigNumber from "bignumber.js";
import axios from "axios";
// import { Signer } from "ethers";
const { waffle, ethers } = hre;
const { provider, deployContract } = waffle;
import type { Signer, Contract } from "ethers";
describe("Paraswap", function() {
  const connectorName = "paraswap-test";
  let dsaWallet0: any;
  let masterSigner: Signer;
  let instaConnectorsV2: Contract;
  let connector: any;
  const wallets = provider.getWallets();
  const [wallet0, wallet1] = wallets;
  before(async () => {
    await hre.network.provider.request({
        method: "hardhat_reset",
        params: [
            {
                forking: {
                    // @ts-ignore
                    jsonRpcUrl: hre.config.networks.hardhat.forking.url,
                },
            },
        ],
    });
    masterSigner = await getMasterSigner();
    instaConnectorsV2 = await ethers.getContractAt(
      abis.core.connectorsV2,
      addresses.core.connectorsV2
    );
    connector = await deployAndEnableConnector({
      connectorName,
      contractArtifact: ConnectV2ParaswapV5Polygon__factory,
      signer: masterSigner,
      connectors: instaConnectorsV2,
    });
    console.log("Connector address", connector.address);
  });
  it("Should have contracts deployed.", async function() {
    expect(!!instaConnectorsV2.address).to.be.true;
    expect(!!connector.address).to.be.true;
    expect(!!masterSigner.getAddress()).to.be.true;
  });
  describe("DSA wallet setup", function() {
    it("Should build DSA v2", async function() {
      dsaWallet0 = await buildDSAv2(wallet0.address);
      expect(!!dsaWallet0.address).to.be.true;
    });
    it("Deposit ETH into DSA wallet", async function() {
      await wallet0.sendTransaction({
        to: dsaWallet0.address,
        value: ethers.utils.parseEther("10"),
      });

      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(
        ethers.utils.parseEther("10")
      );
    });
  });
  describe("Main", function() {
    it("should swap successfully", async function() {
      async function getArg() {
        const slippage = 1;
        /* matic -> USDT */
        const sellTokenAddress = "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"; // matic,  decimals 18
        const sellTokenDecimals = 18;
        const buyTokenAddress = "0xc2132d05d31c914a87c6611c10748aeb04b58e8f"; // USDT, decimals 6
        const buyTokenDecimals = 6;
        const amount = 2;
        const srcAmount = new BigNumber(amount)
          .times(new BigNumber(10).pow(sellTokenDecimals))
          .toFixed(0);
        const fromAddress = dsaWallet0.address;
        let url = `https://apiv5.paraswap.io/prices/`;
        let params = {
          srcToken: sellTokenAddress,
          destToken: buyTokenAddress,
          srcDecimals: sellTokenDecimals,
          destDecimals: buyTokenDecimals,
          amount: srcAmount,
          side: "SELL",
          network: 137,
        };

        const priceRoute = (await axios
          .get(url, { params: params })).data.priceRoute
    

        let buyTokenAmount = priceRoute.destAmount;
        let minAmount = new BigNumber(priceRoute.destAmount)
          .times(1 - slippage / 100)
          .toFixed(0);

        let txConfig = {
          priceRoute: priceRoute,
          srcToken: sellTokenAddress,
          destToken: buyTokenAddress,
          srcDecimals: sellTokenDecimals,
          destDecimals: buyTokenDecimals,
          srcAmount: srcAmount,
          destAmount: minAmount,
          userAddress: fromAddress,
        };
        let url2 = "https://apiv5.paraswap.io/transactions/137?ignoreChecks=true";
         const calldata = (await axios
          .post(url2, txConfig)).data.data

        function caculateUnitAmt(
          buyAmount: any,
          sellAmount: any,
          buyDecimal: any,
          sellDecimal: any,
          maxSlippage: any
        ) {
          let unitAmt: any;
          unitAmt = new BigNumber(buyAmount)
            .dividedBy(10 ** buyDecimal)
            .dividedBy(new BigNumber(sellAmount).dividedBy(10 ** sellDecimal));
          unitAmt = unitAmt.multipliedBy((100 - maxSlippage) / 100);
          unitAmt = unitAmt.multipliedBy(1e18).toFixed(0);
          return unitAmt;
        }

        let unitAmt = caculateUnitAmt(
          buyTokenAmount,
          srcAmount,
          buyTokenDecimals,
          sellTokenDecimals,
          1
        );

        return [
          buyTokenAddress,
          sellTokenAddress,
          srcAmount,
          unitAmt,
          calldata,
          0,
        ];
      }
      let arg = await getArg();
      const spells = [
        {
          connector: connectorName,
          method: "swap",
          args: arg,
        },
      ];
      const tx = await dsaWallet0
        .connect(wallet0)
        .cast(...encodeSpells(spells), wallet1.address);
      const receipt = await tx.wait();

      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.lte(
        ethers.utils.parseEther("8")
      );
    });
  });
});