const { ethers } = require("hardhat"); const impersonateAccounts = require("./impersonate"); const mineTx = async (tx) => { await (await tx).wait(); }; const tokenMapping = { usdc: { impersonateSigner: "0xfcb19e6a322b27c06842a71e8c725399f049ae3a", address: "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48", abi: [ "function mint(address _to, uint256 _amount) external returns (bool);", ], process: async function(owner, to, amt) { const contract = new ethers.Contract(this.address, this.abi, owner); await mineTx(contract.mint(to, amt)); }, }, dai: { impersonateSigner: "0x47ac0fb4f2d84898e4d9e7b4dab3c24507a6d503", abi: ["function transfer(address to, uint value)"], address: "0x6b175474e89094c44da98b954eedeac495271d0f", process: async function(owner, to, amt) { const contract = new ethers.Contract(this.address, this.abi, owner); await mineTx(contract.transfer(to, amt)); }, }, usdt: { impersonateSigner: "0xc6cde7c39eb2f0f0095f41570af89efc2c1ea828", address: "0xdac17f958d2ee523a2206206994597c13d831ec7", abi: [ "function issue(uint amount)", "function transfer(address to, uint value)", ], process: async function(owner, address, amt) { const contract = new ethers.Contract(this.address, this.abi, owner); await mineTx(contract.issue(amt)); await mineTx(contract.transfer(address, amt)); }, }, wbtc: { impersonateSigner: "0xCA06411bd7a7296d7dbdd0050DFc846E95fEBEB7", address: "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599", abi: ["function mint(address _to, uint256 _amount) public returns (bool)"], process: async function(owner, address, amt) { const contract = new ethers.Contract(this.address, this.abi, owner); await mineTx(contract.mint(address, amt)); }, }, }; module.exports = async (tokenName, address, amt) => { const [signer] = await ethers.getSigners(); tokenName = tokenName.toLowerCase(); if (!tokenMapping[tokenName]) { throw new Error( "Add liquidity doesn't support the following token: ", tokenName ); } const token = tokenMapping[tokenName]; const [impersonatedSigner] = await impersonateAccounts([ token.impersonateSigner, ]); // send 1 eth to cover any tx costs. await signer.sendTransaction({ to: impersonatedSigner.address, value: ethers.utils.parseEther("1"), }); await token.process(impersonatedSigner, address, amt); };