all files / contracts/ xTokenRouter.sol

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// SPDX-License-Identifier: MIT
pragma solidity 0.8.16;
 
//Service Contract for getting xToken/xBasket/cToken Contract
//Before using should be initialized by contract owner
 
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./interfaces/IxTokenRouter.sol";
 
contract xTokenRouter is IxTokenRouter, Ownable {
    struct Token {
        address xToken;
        address cToken;
    }
    mapping(string => Token) public tokens;
 
    //Add or update xToken/cToken address: tokens[SOY].xToken = '0x....'
    function setToken(
        string memory crop,
        address xToken,
        address cToken
    ) public onlyOwner {
        require(xToken != address(0), "zero address is not allowed");
        require(cToken != address(0), "zero address is not allowed");
        tokens[crop].xToken = xToken;
        tokens[crop].cToken = cToken;
    }
 
    function getXToken(string memory crop) external view returns (address) {
        return tokens[crop].xToken;
    }
 
    function getCToken(string memory crop) external view returns (address) {
        return tokens[crop].cToken;
    }
 
    function renounceOwnership() public view override EonlyOwner {
        revert ("can 't renounceOwnership here");
    }
}