Solidity Blogpost #2: Config Contract

creditDesk.sol

import "./ICreditLineFactory.sol";

contract CreditDesk {
  address public creditLineFactoryAddress;
  uint256 public maxCreditLineAmount;
  address public protocolOwner;

  function createCreditLine(CreditLineParams params) public onlyOwner {
    require(validParams(params), "invalid params!");
    require(params.amount <= maxCreditLineAmount, "Amount is above maximum");
    
    ICreditLineFactory(creditLineFactoryAddress).createCreditLine(params);
  }

  function setCreditLineMax(uint256 amount) public onlyOwner {
    maxCreditLineAmount = amount;
  }

  function transferOwnership(address newOwner) public onlyOwner {
    protocolOwner = newOwner;
  }

  modifier onlyOwner() {
    require(msg.sender == protocolOwner, "Must be owner!");
    _;
  }
}