How to use the ethers.Contract function in ethers

before(async function() {
		const tokenWeb3 = await MockToken.new()
		const coreWeb3 = await AdExCore.deployed()
		libMock = await MockLibs.new()
		// WARNING: all invokations to core/token will be from account[0]
		const signer = web3Provider.getSigner(userAcc)
		core = new Contract(coreWeb3.address, AdExCore._json.abi, signer)
		token = new Contract(tokenWeb3.address, MockToken._json.abi, signer)
	})
	beforeEach(async function() {

async addLogContentsToReputationTree(blockNumber = "latest") {
    if (this.useJsTree) {
      this.justificationTree = new PatriciaTreeNoHash();
    } else {
      const contractFactory = new ethers.ContractFactory(
        this.patriciaTreeNoHashContractDef.abi,
        this.patriciaTreeNoHashContractDef.bytecode,
        this.ganacheWallet
      );
      const contract = await contractFactory.deploy();
      this.justificationTree = new ethers.Contract(contract.address, this.patriciaTreeNoHashContractDef.abi, this.ganacheWallet);
    }

    this.justificationHashes = {};
    const addr = await this.colonyNetwork.getReputationMiningCycle(true, { blockTag: blockNumber });
    const repCycle = new ethers.Contract(addr, this.repCycleContractDef.abi, this.realWallet);

    // Do updates

    this.nReputationsBeforeLatestLog = ethers.utils.bigNumberify(this.nReputations.toString());
    // This is also the number of decays we have.

    // How many updates from the logs do we have?
    const nLogEntries = await repCycle.getReputationUpdateLogLength({ blockTag: blockNumber });
    if (nLogEntries.toString() === "0") {
      console.log("WARNING: No log entries found. If this is not one of the very first two cycles, something is wrong");
      return;

abi = JSON.parse(fs.readFileSync("smart_contracts/"+contract_type+".abi"));
						} else 
					if(fs.existsSync("smart_contracts/"+contract_type+".abi")) {
							 abi = JSON.parse(fs.readFileSync("node_modules/stromdao-businessobject/smart_contracts/"+contract_type+".abi"));
					} else {
						var raw = srequest('GET',"https://stromkonto.net/abi/"+contract_type+".abi");				   
						abi =JSON.parse(raw.body);							 
					}
				} else {
						var raw = srequest('GET',"js/node_modules/stromdao-businessobject/smart_contracts/"+contract_type+".abi");				   
						abi =JSON.parse(raw.body);
				}
				this._memcach[contract_type]=JSON.stringify(abi);
			}
			if(address!="0x0") {				
				contract = new ethers.Contract(address, abi, this.wallet);
				parent._keepObjRef(address,contract_type);
			} else {
				// Deploy new?
			}
			contract.abi=abi;
            return contract;
        };

before(async () => {
            provider = glob.signer_owner.provider;

            web3SignerManager = await SignerManager.new(glob.owner);

            web3DriipSettlementChallengeState = await MockedDriipSettlementChallengeState.new(glob.owner);
            ethersDriipSettlementChallengeState = new Contract(web3DriipSettlementChallengeState.address, MockedDriipSettlementChallengeState.abi, glob.signer_owner);
            web3NullSettlementChallengeState = await MockedNullSettlementChallengeState.new(glob.owner);
            ethersNullSettlementChallengeState = new Contract(web3NullSettlementChallengeState.address, MockedNullSettlementChallengeState.abi, glob.signer_owner);
            web3Configuration = await MockedConfiguration.new(glob.owner);
            ethersConfiguration = new Contract(web3Configuration.address, MockedConfiguration.abi, glob.signer_owner);
            web3Validator = await MockedValidator.new(glob.owner, web3SignerManager.address);
            ethersValidator = new Contract(web3Validator.address, MockedValidator.abi, glob.signer_owner);
            web3SecurityBond = await MockedSecurityBond.new();
            ethersSecurityBond = new Contract(web3SecurityBond.address, MockedSecurityBond.abi, glob.signer_owner);
            web3WalletLocker = await MockedWalletLocker.new();
            ethersWalletLocker = new Contract(web3WalletLocker.address, MockedWalletLocker.abi, glob.signer_owner);
            web3BalanceTracker = await MockedBalanceTracker.new();
            ethersBalanceTracker = new Contract(web3BalanceTracker.address, MockedBalanceTracker.abi, glob.signer_owner);
            web3FraudChallenge = await MockedFraudChallenge.new(glob.owner);
            ethersFraudChallenge = new Contract(web3FraudChallenge.address, MockedFraudChallenge.abi, glob.signer_owner);
            web3CancelOrdersChallenge = await MockedCancelOrdersChallenge.new();
            ethersCancelOrdersChallenge = new Contract(web3CancelOrdersChallenge.address, MockedCancelOrdersChallenge.abi, glob.signer_owner);

            await web3Configuration.setSettlementChallengeTimeout(web3.eth.blockNumber + 1, 1e3);
            await web3Configuration.setWalletSettlementStakeFraction(web3.eth.blockNumber + 1, 1e17);
            await web3Configuration.setOperatorSettlementStakeFraction(web3.eth.blockNumber + 1, 5e17);
            await web3Configuration.setOperatorSettlementStake(web3.eth.blockNumber + 1, 1e16, mocks.address0, 0);
        });

before(async () => {
            provider = glob.signer_owner.provider;

            web3SignerManager = await SignerManager.new(glob.owner);

            web3DriipSettlementChallengeState = await MockedDriipSettlementChallengeState.new(glob.owner);
            ethersDriipSettlementChallengeState = new Contract(web3DriipSettlementChallengeState.address, MockedDriipSettlementChallengeState.abi, glob.signer_owner);
            web3NullSettlementChallengeState = await MockedNullSettlementChallengeState.new(glob.owner);
            ethersNullSettlementChallengeState = new Contract(web3NullSettlementChallengeState.address, MockedNullSettlementChallengeState.abi, glob.signer_owner);
            web3Configuration = await MockedConfiguration.new(glob.owner);
            ethersConfiguration = new Contract(web3Configuration.address, MockedConfiguration.abi, glob.signer_owner);
            web3Validator = await MockedValidator.new(glob.owner, web3SignerManager.address);
            ethersValidator = new Contract(web3Validator.address, MockedValidator.abi, glob.signer_owner);
            web3SecurityBond = await MockedSecurityBond.new();
            ethersSecurityBond = new Contract(web3SecurityBond.address, MockedSecurityBond.abi, glob.signer_owner);
            web3WalletLocker = await MockedWalletLocker.new();
            ethersWalletLocker = new Contract(web3WalletLocker.address, MockedWalletLocker.abi, glob.signer_owner);
            web3BalanceTracker = await MockedBalanceTracker.new();
            ethersBalanceTracker = new Contract(web3BalanceTracker.address, MockedBalanceTracker.abi, glob.signer_owner);
            web3FraudChallenge = await MockedFraudChallenge.new(glob.owner);
            ethersFraudChallenge = new Contract(web3FraudChallenge.address, MockedFraudChallenge.abi, glob.signer_owner);

            await web3Configuration.setOperatorSettlementStakeFraction(web3.eth.blockNumber + 1, 5e17);
            await web3Configuration.setOperatorSettlementStake(web3.eth.blockNumber + 1, 1e16, mocks.address0, 0);
            await web3Configuration.setSettlementChallengeTimeout(web3.eth.blockNumber + 1, 1000);
        });

before(async () => {
            provider = glob.signer_owner.provider;

            web3SignerManager = await SignerManager.new(glob.owner);

            web3NullSettlementDisputeByPayment = await MockedNullSettlementDisputeByPayment.new();
            ethersNullSettlementDisputeByPayment = new Contract(web3NullSettlementDisputeByPayment.address, MockedNullSettlementDisputeByPayment.abi, glob.signer_owner);
            web3NullSettlementChallengeState = await MockedNullSettlementChallengeState.new();
            ethersNullSettlementChallengeState = new Contract(web3NullSettlementChallengeState.address, MockedNullSettlementChallengeState.abi, glob.signer_owner);
            web3DriipSettlementChallengeState = await MockedDriipSettlementChallengeState.new();
            ethersDriipSettlementChallengeState = new Contract(web3DriipSettlementChallengeState.address, MockedDriipSettlementChallengeState.abi, glob.signer_owner);
            web3Configuration = await MockedConfiguration.new(glob.owner);
            ethersConfiguration = new Contract(web3Configuration.address, MockedConfiguration.abi, glob.signer_owner);
            web3WalletLocker = await MockedWalletLocker.new();
            ethersWalletLocker = new Contract(web3WalletLocker.address, MockedWalletLocker.abi, glob.signer_owner);
            web3BalanceTracker = await MockedBalanceTracker.new();
            ethersBalanceTracker = new Contract(web3BalanceTracker.address, MockedBalanceTracker.abi, glob.signer_owner);

            depositedBalanceType = await web3BalanceTracker.depositedBalanceType();
        });

export async function detectContract(address: string) {
  try {
    const contract = new Contract(address, ERC20, window.provider)
  
    let decimals = await contract.decimals()
    let symbol = await contract.symbol()

    return { decimals, symbol }
  } catch (e) {
    console.log(e)
  }
}

function XDR(contractSettings) {
  this.contractSettings = contractSettings || new ContractSettings();

  this.contract = new Contract(
    this.contractSettings.addressList['ProxyXDR'],
    abi,
    this.contractSettings.signer || this.contractSettings.provider
  );

  /**
   * Call (no gas consumed, doesn't require signer)
   * @returns String
   **/
  this.name = async () => {
    return await this.contract.name();
  };

  /**
   * Transaction (consumes gas, requires signer)
   * @param spender {String}

function sNZD(contractSettings) {
  this.contractSettings = contractSettings || new ContractSettings();

  this.contract = new Contract(
    this.contractSettings.addressList['ProxysNZD'],
    abi,
    this.contractSettings.signer || this.contractSettings.provider
  );

  /**
   * Call (no gas consumed, doesn't require signer)
   * @returns String
   **/
  this.name = async () => {
    return await this.contract.name();
  };

  /**
   * Transaction (consumes gas, requires signer)
   * @param spender {String}

function sTRX(contractSettings) {
  this.contractSettings = contractSettings || new ContractSettings();

  this.contract = new Contract(
    this.contractSettings.addressList['ProxysTRX'],
    abi,
    this.contractSettings.signer || this.contractSettings.provider
  );

  /**
   * Call (no gas consumed, doesn't require signer)
   * @returns String
   **/
  this.name = async () => {
    return await this.contract.name();
  };

  /**
   * Transaction (consumes gas, requires signer)
   * @param spender {String}