dsa-connectors/test/fantom/swap/swap-test.ts

import hre from "hardhat";
import axios from "axios";
import { expect } from "chai";
const { ethers } = hre; //check
import { BigNumber } from "bignumber.js";
import { deployAndEnableConnector } from "../../../scripts/tests/deployAndEnableConnector";
import { buildDSAv2 } from "../../../scripts/tests/buildDSAv2";
import { encodeSpells } from "../../../scripts/tests/encodeSpells";
import { getMasterSigner } from "../../../scripts/tests/getMasterSigner";
import { addresses } from "../../../scripts/tests/fantom/addresses";
import { abis } from "../../../scripts/constant/abis";
import { ConnectV2SwapAggregatorFantom__factory } from "../../../typechain";
import er20abi from "../../../scripts/constant/abi/basics/erc20.json";
import type { Signer, Contract } from "ethers";

describe("Swap | Fantom", function () {
  const connectorName = "swap-test";

  let dsaWallet0: Contract;
  let wallet0: Signer, wallet1: Signer;
  let masterSigner: Signer;
  let instaConnectorsV2: Contract;
  let connector: Contract;

  before(async () => {
    await hre.network.provider.request({
      method: "hardhat_reset",
      params: [
        {
          forking: {
            // @ts-ignore
            jsonRpcUrl: hre.config.networks.hardhat.forking.url
          }
        }
      ]
    });
    [wallet0, wallet1] = await ethers.getSigners();

    masterSigner = await getMasterSigner();
    instaConnectorsV2 = await ethers.getContractAt(abis.core.connectorsV2, addresses.core.connectorsV2);
    connector = await deployAndEnableConnector({
      connectorName,
      contractArtifact: ConnectV2SwapAggregatorFantom__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(!!(await masterSigner.getAddress())).to.be.true;
  });

  describe("DSA wallet setup", function () {
    it("Should build DSA v2", async function () {
      dsaWallet0 = await buildDSAv2(await wallet0.getAddress());
      console.log(dsaWallet0.address);
      expect(!!dsaWallet0.address).to.be.true;
    });

    it("Deposit fantom 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 the tokens", async function () {
      let buyTokenAmountParaswap: any;

      async function getArg() {
        const slippage = 0.5;
        /* eth -> dai */
        const sellTokenAddress = "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"; // FTM,  decimals 18
        const sellTokenDecimals = 18;
        const buyTokenAddress = "0x8D11eC38a3EB5E956B052f67Da8Bdc9bef8Abf3E"; // DAI, decimals 18
        const buyTokenDecimals = 18;
        const amount = 1;

        const srcAmount = new BigNumber(amount).times(new BigNumber(10).pow(sellTokenDecimals)).toFixed(0);

        let paraswapUrl1 = `https://apiv5.paraswap.io/prices/`;
        let paraswapUrl2 = `https://apiv5.paraswap.io/transactions/250?ignoreChecks=true`;

        //paraswap
        let paramsPara = {
          srcToken: sellTokenAddress,
          destToken: buyTokenAddress,
          srcDecimals: sellTokenDecimals,
          destDecimals: buyTokenDecimals,
          amount: srcAmount,
          side: "SELL",
          network: 250
        };

        const priceRoute = (await axios.get(paraswapUrl1, { params: paramsPara })).data.priceRoute;
        buyTokenAmountParaswap = priceRoute.destAmount;
        let minAmount = new BigNumber(priceRoute.destAmount).times((100 - 1) / 100).toFixed(0);

        let txConfig = {
          priceRoute: priceRoute,
          srcToken: sellTokenAddress,
          destToken: buyTokenAddress,
          srcDecimals: sellTokenDecimals,
          destDecimals: buyTokenDecimals,
          srcAmount: srcAmount,
          destAmount: minAmount,
          userAddress: dsaWallet0.address
        };
        const calldataPara = (await axios.post(paraswapUrl2, txConfig)).data.data;

        let calculateUnitAmt = (buyAmount: any) => {
          const buyTokenAmountRes = new BigNumber(buyAmount)
            .dividedBy(new BigNumber(10).pow(buyTokenDecimals))
            .toFixed(8);

          let unitAmt: any = new BigNumber(buyTokenAmountRes).dividedBy(new BigNumber(amount));

          unitAmt = unitAmt.multipliedBy((100 - 1) / 100);
          unitAmt = unitAmt.multipliedBy(1e18).toFixed(0);
          return unitAmt;
        };
        let unitAmtParaswap = calculateUnitAmt(buyTokenAmountParaswap);

        function getCallData(connector: string, unitAmt: any, callData: any) {
          var abi = [
            "function swap(address,address,uint256,uint256,bytes,uint256)",
            "function sell(address,address,uint256,uint256,bytes,uint256)"
          ];
          var iface = new ethers.utils.Interface(abi);
          const spell = connector === "1INCH-A" ? "sell" : "swap";
          let data = iface.encodeFunctionData(spell, [
            buyTokenAddress,
            sellTokenAddress,
            srcAmount,
            unitAmt,
            callData,
            0
          ]);
          return data;
        }
        let dataPara = ethers.utils.hexlify(await getCallData("PARASWAP-A", unitAmtParaswap, calldataPara));
        let datas = [dataPara];

        let connectors = ["PARASWAP-A"];
        return [connectors, datas];
      }

      let arg = await getArg();
      const spells = [
        {
          connector: connectorName,
          method: "swap",
          args: arg
        }
      ];
      const tx = await dsaWallet0.connect(wallet0).cast(...encodeSpells(spells), await wallet1.getAddress());
      const receipt = await tx.wait();

      const daiToken = await ethers.getContractAt(
        er20abi,
        "0x8D11eC38a3EB5E956B052f67Da8Bdc9bef8Abf3E" // dai address
      );

      expect(await daiToken.balanceOf(dsaWallet0.address)).to.be.gte(buyTokenAmountParaswap);
      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.lte(ethers.utils.parseEther("9"));
    });
  });
});