pragma solidity ^0.5.17;

import "../../lib/os/ERC20.sol";

import "./IConfig.sol";
import "./ProtocolConfigData.sol";


contract ConfigConsumer is ProtocolConfigData {
    /**
    * @dev Internal function to fetch the address of the Config module from the controller
    * @return Address of the Config module
    */
    function _protocolConfig() internal view returns (IConfig);

    /**
    * @dev Internal function to get the Protocol config for a certain term
    * @param _termId Identification number of the term querying the Protocol config of
    * @return Protocol config for the given term
    */
    function _getConfigAt(uint64 _termId) internal view returns (Config memory) {
        (ERC20 _feeToken,
        uint256[3] memory _fees,
        uint64[5] memory _roundStateDurations,
        uint16[2] memory _pcts,
        uint64[4] memory _roundParams,
        uint256[2] memory _appealCollateralParams,
        uint256 _minActiveBalance) = _protocolConfig().getConfig(_termId);

        Config memory config;

        config.fees = FeesConfig({
            token: _feeToken,
            guardianFee: _fees[0],
            draftFee: _fees[1],
            settleFee: _fees[2],
            finalRoundReduction: _pcts[1]
        });

        config.disputes = DisputesConfig({
            evidenceTerms: _roundStateDurations[0],
            commitTerms: _roundStateDurations[1],
            revealTerms: _roundStateDurations[2],
            appealTerms: _roundStateDurations[3],
            appealConfirmTerms: _roundStateDurations[4],
            penaltyPct: _pcts[0],
            firstRoundGuardiansNumber: _roundParams[0],
            appealStepFactor: _roundParams[1],
            maxRegularAppealRounds: _roundParams[2],
            finalRoundLockTerms: _roundParams[3],
            appealCollateralFactor: _appealCollateralParams[0],
            appealConfirmCollateralFactor: _appealCollateralParams[1]
        });

        config.minActiveBalance = _minActiveBalance;

        return config;
    }

    /**
    * @dev Internal function to get the draft config for a given term
    * @param _termId Identification number of the term querying the draft config of
    * @return Draft config for the given term
    */
    function _getDraftConfig(uint64 _termId) internal view returns (DraftConfig memory) {
        (ERC20 feeToken, uint256 draftFee, uint16 penaltyPct) = _protocolConfig().getDraftConfig(_termId);
        return DraftConfig({ feeToken: feeToken, draftFee: draftFee, penaltyPct: penaltyPct });
    }

    /**
    * @dev Internal function to get the min active balance config for a given term
    * @param _termId Identification number of the term querying the min active balance config of
    * @return Minimum amount of guardian tokens that can be activated
    */
    function _getMinActiveBalance(uint64 _termId) internal view returns (uint256) {
        return _protocolConfig().getMinActiveBalance(_termId);
    }
}