// Contract: DssSpell
// Target function: function addCollateralBase(bytes32 ilk, address gem, address join, address flipper, address pip) internal
osmMom).setOsm(_ilk, _osm);
    }


    /*****************************/
    /*** Collateral Onboarding ***/
    /*****************************/

    /**
        @dev Performs basic functions and sanity checks to add a new collateral type to the MCD system
        @param _vat      MCD_VAT
        @param _cat      MCD_CAT
        @param _jug      MCD_JUG
        @param _end      MCD_END
        @param _spot     MCD_SPOT
        @param _reg      ILK_REGISTRY
        @param _ilk      Collateral type key code [Ex. "ETH-A"]
        @param _gem      Address of token contract
        @param _join     Address of join adapter
        @param _flip     Address of flipper
        @param _pip      Address of price feed
    */
    function addCollateralBase(
        address _vat,
        address _cat,
        address _jug,
        address _end,
        address _spot,
        address _reg,
        bytes32 _ilk,
        address _gem,
        address _join,
        address _flip,
        address _pip
    ) public {
        // Sanity checks
        require(JoinLike(_join).vat() == _vat);     // "join-vat-not-match"
        require(JoinLike(_join).ilk() == _ilk);     // "join-ilk-not-match"
        require(JoinLike(_join).gem() == _gem);     // "join-gem-not-match"
        require(JoinLike(_join).dec() ==
                   ERC20(_gem).decimals());         // "join-dec-not-match"
        require(AuctionLike(_flip).vat() == _vat);  // "flip-vat-not-match"
        require(AuctionLike(_flip).cat() == _cat);  // "flip-cat-not-match"
        require(AuctionLike(_flip).ilk() == _ilk);  // "flip-ilk-not-match"

        // Set the token PIP in the Spotter
        setContract(_spot, _ilk, "pip", _pip);

        // Set the ilk Flipper in the Cat
        setContract(_cat, _ilk, "flip", _flip);

        // Init ilk in Vat & Jug
        Initializable(_vat).init(_ilk);  // Vat
        Initializable(_jug).init(_ilk);  // Jug

        // Allow ilk Join to modify Vat registry
        authorize(_vat, _join);
		// Allow the ilk Flipper to reduce the Cat litterbox on deal()
        authorize(_cat, _flip);
        // Allow Cat to kick auctions in ilk Flipper
        authorize(_flip, _cat);
        // Allow End to yank auctions in ilk Flipper
        authorize(_flip, _end);

        // Add new ilk to the IlkRegistry
        RegistryLike(_reg).add(_join);
    }
}

////// lib/dss-exec-lib/src/DssAction.sol
//
// DssAction.sol -- DSS Executive Spell Actions
//
// Copyright (C) 2020 Maker Ecosystem Growth Holdings, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

/* pragma solidity ^0.6.11; */

/* import "./CollateralOpts.sol"; */
/* import "./DssExecLib.sol"; */

abstract contract DssAction {

    using DssExecLib for *;

    bool    public immutable officeHours;

    // Changelog address applies to MCD deployments on
    //        mainnet, kovan, rinkeby, ropsten, and goerli
    address constant public LOG = 0xdA0Ab1e0017DEbCd72Be8599041a2aa3bA7e740F;

    constructor(bool officeHours_) public {
        officeHours = officeHours_;
    }

    // DssExec calls execute. We limit this function subject to officeHours modifier.
    function execute() external limited {
        actions();
    }

    // DssAction developer must override `actions()` and place all actions to be called inside.
    //   The DssExec function will call this subject to the officeHours limiter
    //   By keeping this function public we allow simulations of `execute()` on the actions outside of the cast time.
    function actions() public virtual;

    // Modifier required to
    modifier limited {
        if (officeHours) {
            uint day = (block.timestamp / 1 days + 3) % 7;
            require(day < 5, "Can only be cast on a weekday");
            uint hour = block.timestamp / 1 hours % 24;
            require(hour >= 14 && hour < 21, "Outside office hours");
        }
        _;
    }

    /****************************/
    /*** Core Address Helpers ***/
    /****************************/
    function vat()        internal view returns (address) { return getChangelogAddress("MCD_VAT"); }
    function cat()        internal view returns (address) { return getChangelogAddress("MCD_CAT"); }
    function jug()        internal view returns (address) { return getChangelogAddress("MCD_JUG"); }
    function pot()        internal view returns (address) { return getChangelogAddress("MCD_POT"); }
    function vow()        internal view returns (address) { return getChangelogAddress("MCD_VOW"); }
    function end()        internal view returns (address) { return getChangelogAddress("MCD_END"); }
    function reg()        internal view returns (address) { return getChangelogAddress("ILK_REGISTRY"); }
    function spot()       internal view returns (address) { return getChangelogAddress("MCD_SPOT"); }
    function flap()       internal view returns (address) { return getChangelogAddress("MCD_FLAP"); }
    function flop()       internal view returns (address) { return getChangelogAddress("MCD_FLOP"); }
    function osmMom()     internal view returns (address) { return getChangelogAddress("OSM_MOM"); }
    function govGuard()   internal view returns (address) { return getChangelogAddress("GOV_GUARD"); }
    function flipperMom() internal view returns (address) { return getChangelogAddress("FLIPPER_MOM"); }
    function autoLine()   internal view returns (address) { return getChangelogAddress("MCD_IAM_AUTO_LINE"); }

    function flip(bytes32 ilk) internal view returns (address) {
        (,,,, address _flip,,,) = RegistryLike(reg()).ilkData(ilk);
        return _flip;
    }

    function getChangelogAddress(bytes32 key) internal view returns (address) {
        return ChainlogLike(LOG).getAddress(key);
    }


    /****************************/
    /*** Changelog Management ***/
    /****************************/
    function setChangelogAddress(bytes32 key, address value) internal {
        DssExecLib.setChangelogAddress(LOG, key, value);
    }

    function setChangelogVersion(string memory version) internal {
        DssExecLib.setChangelogVersion(LOG, version);
    }

    function setChangelogIPFS(string memory ipfs) internal {
        DssExecLib.setChangelogIPFS(LOG, ipfs);
    }

    function setChangelogSHA256(string memory SHA256) internal {
        DssExecLib.setChangelogSHA256(LOG, SHA256);
    }

    /**********************/
    /*** Authorizations ***/
    /**********************/
    function authorize(address base, address ward) internal virtual {
        DssExecLib.authorize(base, ward);
    }

    function deauthorize(address base, address ward) internal {
        DssExecLib.deauthorize(base, ward);
    }

    /**************************/
    /*** Accumulating Rates ***/
    /**************************/
    function accumulateDSR() internal {
        DssExecLib.accumulateDSR(pot());
    }

    function accumulateCollateralStabilityFees(bytes32 ilk) internal {
        DssExecLib.accumulateCollateralStabilityFees(jug(), ilk);
    }

    /*********************/
    /*** Price Updates ***/
    /*********************/
    function updateCollateralPrice(bytes32 ilk) internal {
        DssExecLib.updateCollateralPrice(spot(), ilk);
    }

    /****************************/
    /*** System Configuration ***/
    /****************************/
    function setContract(address base, bytes32 what, address addr) internal {
        DssExecLib.setContract(base, what, addr);
    }

    function setContract(address base, bytes32 ilk, bytes32 what, address addr) internal {
        DssExecLib.setContract(base, ilk, what, addr);
    }

    /******************************/
    /*** System Risk Parameters ***/
    /******************************/
    function setGlobalDebtCeiling(uint256 amount) internal {
        DssExecLib.setGlobalDebtCeiling(vat(), amount);
    }

    function increaseGlobalDebtCeiling(uint256 amount) internal {
        DssExecLib.increaseGlobalDebtCeiling(vat(), amount);
    }

    function decreaseGlobalDebtCeiling(uint256 amount) internal {
        DssExecLib.decreaseGlobalDebtCeiling(vat(), amount);
    }

    function setDSR(uint256 rate) internal {
        DssExecLib.setDSR(pot(), rate);
    }

    function setSurplusAuctionAmount(uint256 amount) internal {
        DssExecLib.setSurplusAuctionAmount(vow(), amount);
    }

    function setSurplusBuffer(uint256 amount) internal {
        DssExecLib.setSurplusBuffer(vow(), amount);
    }

    function setMinSurplusAuctionBidIncrease(uint256 pct_bps) internal {
        DssExecLib.setMinSurplusAuctionBidIncrease(flap(), pct_bps);
    }

    function setSurplusAuctionBidDuration(uint256 duration) internal {
        DssExecLib.setSurplusAuctionBidDuration(flap(), duration);
    }

    function setSurplusAuctionDuration(uint256 duration) internal {
        DssExecLib.setSurplusAuctionDuration(flap(), duration);
    }

    function setDebtAuctionDelay(uint256 duration) internal {
        DssExecLib.setDebtAuctionDelay(vow(), duration);
    }

    function setDebtAuctionDAIAmount(uint256 amount) internal {
        DssExecLib.setDebtAuctionDAIAmount(vow(), amount);
    }

    function setDebtAuctionMKRAmount(uint256 amount) internal {
        DssExecLib.setDebtAuctionMKRAmount(vow(), amount);
    }

    function setMinDebtAuctionBidIncrease(uint256 pct_bps) internal {
        DssExecLib.setMinDebtAuctionBidIncrease(flop(), pct_bps);
    }

    function setDebtAuctionBidDuration(uint256 duration) internal {
        DssExecLib.setDebtAuctionBidDuration(flop(), duration);
    }

    function setDebtAuctionDuration(uint256 duration) internal {
        DssExecLib.setDebtAuctionDuration(flop(), duration);
    }

    function setDebtAuctionMKRIncreaseRate(uint256 pct_bps) internal {
        DssExecLib.setDebtAuctionMKRIncreaseRate(flop(), pct_bps);
    }

    function setMaxTotalDAILiquidationAmount(uint256 amount) internal {
        DssExecLib.setMaxTotalDAILiquidationAmount(cat(), amount);
    }

    function setEmergencyShutdownProcessingTime(uint256 duration) internal {
        DssExecLib.setEmergencyShutdownProcessingTime(end(), duration);
    }

    function setGlobalStabilityFee(uint256 rate) internal {
        DssExecLib.setGlobalStabilityFee(jug(), rate);
    }

    function setDAIReferenceValue(uint256 value) internal {
        DssExecLib.setDAIReferenceValue(spot(), value);
    }

    /*****************************/
    /*** Collateral Management ***/
    /*****************************/
    function setIlkDebtCeiling(bytes32 ilk, uint256 amount) internal {
        DssExecLib.setIlkDebtCeiling(vat(), ilk, amount);
    }

    function increaseIlkDebtCeiling(bytes32 ilk, uint256 amount, bool global) internal {
        DssExecLib.increaseIlkDebtCeiling(vat(), ilk, amount, global);
    }

    function increaseIlkDebtCeiling(bytes32 ilk, uint256 amount) internal {
        DssExecLib.increaseIlkDebtCeiling(vat(), ilk, amount, true);
    }

    function decreaseIlkDebtCeiling(bytes32 ilk, uint256 amount, bool global) internal {
        DssExecLib.decreaseIlkDebtCeiling(vat(), ilk, amount, global);
    }

    function decreaseIlkDebtCeiling(bytes32 ilk, uint256 amount) internal {
        DssExecLib.decreaseIlkDebtCeiling(vat(), ilk, amount, true);
    }

    function setIlkAutoLineParameters(bytes32 ilk, uint256 amount, uint256 gap, uint256 ttl) internal {
        DssExecLib.setIlkAutoLineParameters(autoLine(), ilk, amount, gap, ttl);
    }

    function setIlkAutoLineDebtCeiling(bytes32 ilk, uint256 amount) internal {
        DssExecLib.setIlkAutoLineDebtCeiling(autoLine(), ilk, amount);
    }

    function removeIlkFromAutoLine(bytes32 ilk) internal {
        DssExecLib.removeIlkFromAutoLine(autoLine(), ilk);
    }

    function setIlkMinVaultAmount(bytes32 ilk, uint256 amount) internal {
        DssExecLib.setIlkMinVaultAmount(vat(), ilk, amount);
    }

    function setIlkLiquidationPenalty(bytes32 ilk, uint256 pct_bps) internal {
        DssExecLib.setIlkLiquidationPenalty(cat(), ilk, pct_bps);
    }

    function setIlkMaxLiquidationAmount(bytes32 ilk, uint256 amount) internal {
        DssExecLib.setIlkMaxLiquidationAmount(cat(), ilk, amount);
    }

    function setIlkLiquidationRatio(bytes32 ilk, uint256 pct_bps) internal {
        DssExecLib.setIlkLiquidationRatio(spot(), ilk, pct_bps);
    }

    function setIlkMinAuctionBidIncrease(bytes32 ilk, uint256 pct_bps) internal {
        DssExecLib.setIlkMinAuctionBidIncrease(flip(ilk), pct_bps);
    }

    function setIlkBidDuration(bytes32 ilk, uint256 duration) internal {
        DssExecLib.setIlkBidDuration(flip(ilk), duration);
    }

    function setIlkAuctionDuration(bytes32 ilk, uint256 duration) internal {
        DssExecLib.setIlkAuctionDuration(flip(ilk), duration);
    }

    function setIlkStabilityFee(bytes32 ilk, uint256 rate, bool doDrip) internal {
        DssExecLib.setIlkStabilityFee(jug(), ilk, rate, doDrip);
    }

    function setIlkStabilityFee(bytes32 ilk, uint256 rate) internal {
        DssExecLib.setIlkStabilityFee(jug(), ilk, rate, true);
    }

    /***********************/
    /*** Core Management ***/
    /***********************/
    function updateCollateralAuctionContract(bytes32 ilk, address newFlip, address oldFlip) internal {
        DssExecLib.updateCollateralAuctionContract(vat(), cat(), end(), flipperMom(), ilk, newFlip, oldFlip);
    }

    function updateSurplusAuctionContract(address newFlap, address oldFlap) internal {
        DssExecLib.updateSurplusAuctionContract(vat(), vow(), newFlap, oldFlap);
    }

    function updateDebtAuctionContract(address newFlop, address oldFlop) internal {
        DssExecLib.updateDebtAuctionContract(vat(), vow(), govGuard(), newFlop, oldFlop);
    }

    /*************************/
    /*** Oracle Management ***/
    /*************************/
    function addWritersToMedianWhitelist(address medianizer, address[] memory feeds) internal {
        DssExecLib.addWritersToMedianWhitelist(medianizer, feeds);
    }

    function removeWritersFromMedianWhitelist(address medianizer, address[] memory feeds) internal {
        DssExecLib.removeWritersFromMedianWhitelist(medianizer, feeds);
    }

    function addReadersToMedianWhitelist(address medianizer, address[] memory readers) internal {
        DssExecLib.addReadersToMedianWhitelist(medianizer, readers);
    }

    function addReaderToMedianWhitelist(address medianizer, address reader) internal {
        DssExecLib.addReaderToMedianWhitelist(medianizer, reader);
    }

    function removeReadersFromMedianWhitelist(address medianizer, address[] memory readers) internal {
        DssExecLib.removeReadersFromMedianWhitelist(medianizer, readers);
    }

    function removeReaderFromMedianWhitelist(address medianizer, address reader) internal {
        DssExecLib.removeReaderFromMedianWhitelist(medianizer, reader);
    }

    function setMedianWritersQuorum(address medianizer, uint256 minQuorum) internal {
        DssExecLib.setMedianWritersQuorum(medianizer, minQuorum);
    }

    function addReaderToOSMWhitelist(address osm, address reader) internal {
        DssExecLib.addReaderToOSMWhitelist(osm, reader);
    }

    function removeReaderFromOSMWhitelist(address osm, address reader) internal {
        DssExecLib.removeReaderFromOSMWhitelist(osm, reader);
    }

    function allowOSMFreeze(address osm, bytes32 ilk) internal {
        DssExecLib.allowOSMFreeze(osmMom(), osm, ilk);
    }

    /*****************************/
    /*** Collateral Onboarding ***/
    /*****************************/