import { Contract } from 'ethers';
import erc20Abi from '../abis/EsToken.json';
import { STAKING_ADDRESSES } from '@/configs/configchain';

const chainId = parseInt(import.meta.env.VUE_APP_STAKING_CHAIN);

export class ERC20 {
  constructor(_chainInstance) {
    this.bc = _chainInstance;
    const cfg = STAKING_ADDRESSES[chainId]
    this.tokenAddress = cfg.cec
    this.esCecTokenAddress = cfg.esCec
    this.stakedEsCecRouter = cfg.stakedEsCecRouter
    this.stakedCecTracker = cfg.stakedCecTracker
    this.stakedEsCecTracker = cfg.stakedEsCecTracker
  }

  // async balanceOf(provider, tokenAddress, address) {
    async balanceOf(address) {
    let provider = await this.bc.eoaProvider
    // let addressT = provider.getSigner().getAddress();
    const contract = new Contract(this.tokenAddress, erc20Abi, provider.getSigner());
    return contract.balanceOf(address);
  }

// 查询esCec数量
  async esCecBalanceOf(address) {
    let provider = await this.bc.eoaProvider
    const contract = new Contract(this.esCecTokenAddress, erc20Abi, provider.getSigner());
    return contract.balanceOf(address);
  }

  async allowance(tokenAddress, spender) {
    const provider = this.bc.eoaProvider;
    const owner = provider.getSigner().getAddress();
    const contract = new Contract(tokenAddress, erc20Abi, provider.getSigner());
    return contract.allowance(owner, spender);
  }

  async approve(address, tokenAddress, amount) {
    const provider = this.bc.eoaProvider;
    this.bc.checkAndChangeChain(chainId, provider);
    const contract = new Contract(tokenAddress, erc20Abi, provider.getSigner());
    const tx = await contract.approve(address, amount);
    await tx.wait();
    return tx;
  }
}