// Contract: DssSpell
// Target function: function giveAdminAccess(DssInstance memory dss, address who) internal
/OsmAbstract.sol"; */
/* import { OsmMomAbstract } from "./dss/OsmMomAbstract.sol"; */
/* import { PotAbstract } from "./dss/PotAbstract.sol"; */
/* import { PsmAbstract } from "./dss/PsmAbstract.sol"; */
/* import { SpotAbstract } from "./dss/SpotAbstract.sol"; */
/* import { StairstepExponentialDecreaseAbstract } from "./dss/StairstepExponentialDecreaseAbstract.sol"; */
/* import { VatAbstract } from "./dss/VatAbstract.sol"; */
/* import { VestAbstract } from "./dss/VestAbstract.sol"; */
/* import { VowAbstract } from "./dss/VowAbstract.sol"; */

// MIP21 Abstracts
/* import {
  RwaInputConduitBaseAbstract,
  RwaInputConduitAbstract,
  RwaInputConduit2Abstract,
  RwaInputConduit3Abstract
} from "./dss/mip21/RwaInputConduitAbstract.sol"; */
/* import { RwaJarAbstract } from "./dss/mip21/RwaJarAbstract.sol"; */
/* import { RwaLiquidationOracleAbstract } from "./dss/mip21/RwaLiquidationOracleAbstract.sol"; */
/* import {
  RwaOutputConduitBaseAbstract,
  RwaOutputConduitAbstract,
  RwaOutputConduit2Abstract,
  RwaOutputConduit3Abstract
} from "./dss/mip21/RwaOutputConduitAbstract.sol"; */
/* import { RwaUrnAbstract } from "./dss/mip21/RwaUrnAbstract.sol"; */

/* import { GemPitAbstract } from "./sai/GemPitAbstract.sol"; */
/* import { SaiMomAbstract } from "./sai/SaiMomAbstract.sol"; */
/* import { SaiTapAbstract } from "./sai/SaiTapAbstract.sol"; */
/* import { SaiTopAbstract } from "./sai/SaiTopAbstract.sol"; */
/* import { SaiTubAbstract } from "./sai/SaiTubAbstract.sol"; */
/* import { SaiVoxAbstract } from "./sai/SaiVoxAbstract.sol"; */

// Partial DSS Abstracts
/* import { WardsAbstract } from "./utils/WardsAbstract.sol"; */

////// lib/dss-test/src/GodMode.sol
// SPDX-FileCopyrightText: © 2022 Dai Foundation <www.daifoundation.org>
//
// 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 >=0.8.0; */

/* import {
    WardsAbstract,
    DSTokenAbstract,
    DaiAbstract,
    VatAbstract
} from "dss-interfaces/Interfaces.sol"; */
/* import {Vm} from "forge-std/Vm.sol"; */

library GodMode {

    address constant public VM_ADDR = address(bytes20(uint160(uint256(keccak256('hevm cheat code')))));

    function vm() internal pure returns (Vm) {
        return Vm(VM_ADDR);
    }

    /// @dev Set the ward for `base` for the specified `target`
    /// Note this only works for contracts compiled under Solidity. Vyper contracts use a different storage structure for maps.
    /// See https://twitter.com/msolomon44/status/1420137730009300992?t=WO2052xM3AzUCL7o7Pfkow&s=19
    function setWard(address base, address target, uint256 val) internal {

        // Edge case - ward is already set
        if (WardsAbstract(base).wards(target) == val) return;

        for (int i = 0; i < 100; i++) {
            // Scan the storage for the ward storage slot
            bytes32 prevValue = vm().load(
                address(base),
                keccak256(abi.encode(target, uint256(i)))
            );
            vm().store(
                address(base),
                keccak256(abi.encode(target, uint256(i))),
                bytes32(uint256(val))
            );
            if (WardsAbstract(base).wards(target) == val) {
                // Found it
                return;
            } else {
                // Keep going after restoring the original value
                vm().store(
                    address(base),
                    keccak256(abi.encode(target, uint256(i))),
                    prevValue
                );
            }
        }

        // We have failed if we reach here
        revert("Could not give auth access");
    }

    /// @dev Set the ward for `base` for the specified `target`
    /// Note this only works for contracts compiled under Solidity. Vyper contracts use a different storage structure for maps.
    /// See https://twitter.com/msolomon44/status/1420137730009300992?t=WO2052xM3AzUCL7o7Pfkow&s=19
    function setWard(WardsAbstract base, address target, uint256 val) internal {
        setWard(address(base), target, val);
    }

    /// @dev Set the ward for `base` for the specified `target`
    /// Note this only works for contracts compiled under Solidity. Vyper contracts use a different storage structure for maps.
    /// See https://twitter.com/msolomon44/status/1420137730009300992?t=WO2052xM3AzUCL7o7Pfkow&s=19
    function setWard(VatAbstract base, address target, uint256 val) internal {
        setWard(address(base), target, val);
    }

    /// @dev Sets the balance for `who` to `amount` for `token`.
    function setBalance(address token, address who, uint256 amount) internal {
        // Edge case - balance is already set for some reason
        if (DSTokenAbstract(token).balanceOf(who) == amount) return;

        for (uint256 i = 0; i < 200; i++) {
            // Scan the storage for the solidity-style balance storage slot
            {
                bytes32 prevValue = vm().load(
                    token,
                    keccak256(abi.encode(who, uint256(i)))
                );
                vm().store(
                    token,
                    keccak256(abi.encode(who, uint256(i))),
                    bytes32(amount)
                );
                if (DSTokenAbstract(token).balanceOf(who) == amount) {
                    // Found it
                    return;
                } else {
                    // Keep going after restoring the original value
                    vm().store(
                        token,
                        keccak256(abi.encode(who, uint256(i))),
                        prevValue
                    );
                }
            }

            // Vyper-style storage layout for maps
            {
                bytes32 prevValue = vm().load(
                    token,
                    keccak256(abi.encode(uint256(i), who))
                );

                vm().store(
                    token,
                    keccak256(abi.encode(uint256(i), who)),
                    bytes32(amount)
                );
                if (DSTokenAbstract(token).balanceOf(who) == amount) {
                    // Found it
                    return;
                } else {
                    // Keep going after restoring the original value
                    vm().store(
                        token,
                        keccak256(abi.encode(uint256(i), who)),
                        prevValue
                    );
                }
            }
        }

        // We have failed if we reach here
        revert("Could not give tokens");
    }

    /// @dev Sets the balance for `who` to `amount` for `token`.
    function setBalance(DSTokenAbstract token, address who, uint256 amount) internal {
        setBalance(address(token), who, amount);
    }

    /// @dev Sets the balance for `who` to `amount` for `token`.
    function setBalance(DaiAbstract token, address who, uint256 amount) internal {
        setBalance(address(token), who, amount);
    }

}

////// lib/dss-test/src/MCDUser.sol
// SPDX-FileCopyrightText: © 2022 Dai Foundation <www.daifoundation.org>
//
// 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 >=0.8.0; */

/* import "dss-interfaces/Interfaces.sol"; */

/* import {GodMode} from "./GodMode.sol"; */
/* import {DssInstance} from "./MCD.sol"; */

/// @dev A user which can perform actions in MCD
contract MCDUser {

    using GodMode for *;

    DssInstance dss;

    constructor(
        DssInstance memory _dss
    ) {
        dss = _dss;
    }

    /// @dev Create an auction on the provided ilk
    /// @param join The gem join adapter to use
    /// @param amount The amount of gems to use as collateral
    function createAuction(
        GemJoinAbstract join,
        uint256 amount
    ) public {
        DSTokenAbstract token = DSTokenAbstract(join.gem());
        bytes32 ilk = join.ilk();

        uint256 prevBalance = token.balanceOf(address(this));
        token.setBalance(address(this), amount);
        uint256 prevAllowance = token.allowance(address(this), address(join));
        token.approve(address(join), amount);
        join.join(address(this), amount);
        token.setBalance(address(this), prevBalance);
        token.approve(address(join), prevAllowance);
        (,uint256 rate, uint256 spot,,) = dss.vat.ilks(ilk);
        uint256 art = spot * amount / rate;
        uint256 ink = amount * (10 ** (18 - token.decimals()));
        dss.vat.frob(ilk, address(this), address(this), address(this), int256(ink), int256(art));

        // Temporarily increase the liquidation threshold to liquidate this one vault then reset it
        uint256 prevWard = dss.vat.wards(address(this));
        dss.vat.setWard(address(this), 1);
        dss.vat.file(ilk, "spot", spot / 2);
        dss.dog.bark(ilk, address(this), address(this));
        dss.vat.file(ilk, "spot", spot);
        dss.vat.setWard(address(this), prevWard);
    }

}

////// lib/dss-test/src/MCD.sol
// SPDX-FileCopyrightText: © 2022 Dai Foundation <www.daifoundation.org>
//
// 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 >=0.8.0; */

/* import "dss-interfaces/Interfaces.sol"; */

/* import {MCDUser} from "./MCDUser.sol"; */
/* import {GodMode} from "./GodMode.sol"; */

contract DSValue {
    bool    has;
    bytes32 val;
    function peek() public view returns (bytes32, bool) {
        return (val,has);
    }
    function read() external view returns (bytes32) {
        bytes32 wut; bool haz;
        (wut, haz) = peek();
        require(haz, "haz-not");
        return wut;
    }
    function poke(bytes32 wut) external {
        val = wut;
        has = true;
    }
    function void() external {
        val = bytes32(0);
        has = false;
    }
}

struct DssInstance {
    ChainlogAbstract chainlog;
    VatAbstract vat;
    DaiJoinAbstract daiJoin;
    DaiAbstract dai;
    VowAbstract vow;
    DogAbstract dog;
    PotAbstract pot;
    JugAbstract jug;
    SpotAbstract spotter;
    EndAbstract end;
    CureAbstract cure;
    FlapAbstract flap;
    FlopAbstract flop;
    ESMAbstract esm;
}

struct DssIlkInstance {
    DSTokenAbstract gem;
    OsmAbstract pip;
    GemJoinAbstract join;
    ClipAbstract clip;
}

library MCD {

    uint256 constant WAD = 10 ** 18;
    uint256 constant RAY = 10 ** 27;
    uint256 constant RAD = 10 ** 45;

    function getAddressOrNull(DssInstance memory dss, bytes32 key) internal view returns (address) {
        try dss.chainlog.getAddress(key) returns (address a) {
            return a;
        } catch {
            return address(0);
        }
    }

    function loadFromChainlog(address chainlog) internal view returns (DssInstance memory dss) {
        return loadFromChainlog(ChainlogAbstract(chainlog));
    }

    function loadFromChainlog(ChainlogAbstract chainlog) internal view returns (DssInstance memory dss) {
        dss.chainlog = chainlog;
        dss.vat = VatAbstract(getAddressOrNull(dss, "MCD_VAT"));
        dss.daiJoin = DaiJoinAbstract(getAddressOrNull(dss, "MCD_JOIN_DAI"));
        dss.dai = DaiAbstract(getAddressOrNull(dss, "MCD_DAI"));
        dss.vow = VowAbstract(getAddressOrNull(dss, "MCD_VOW"));
        dss.dog = DogAbstract(getAddressOrNull(dss, "MCD_DOG"));
        dss.pot = PotAbstract(getAddressOrNull(dss, "MCD_POT"));
        dss.jug = JugAbstract(getAddressOrNull(dss, "MCD_JUG"));
        dss.spotter = SpotAbstract(getAddressOrNull(dss, "MCD_SPOT"));
        dss.end = EndAbstract(getAddressOrNull(dss, "MCD_END"));
        dss.cure = CureAbstract(getAddressOrNull(dss, "MCD_CURE"));
        dss.flap = FlapAbstract(getAddressOrNull(dss, "MCD_FLAP"));
        dss.flop = FlopAbstract(getAddressOrNull(dss, "MCD_FLOP"));
        dss.esm = ESMAbstract(getAddressOrNull(dss, "MCD_ESM"));
    }

    function bytesToBytes32(bytes memory b) private pure returns (bytes32) {
        bytes32 out;
        for (uint256 i = 0; i < b.length; i++) {
            out |= bytes32(b[i] & 0xFF) >> (i * 8);
        }
        return out;
    }

    function getIlk(DssInstance memory dss, string memory gem, string memory variant) internal view returns (DssIlkInstance memory) {
        return DssIlkInstance(
            DSTokenAbstract(getAddressOrNull(dss, bytesToBytes32(bytes(gem)))),
            OsmAbstract(getAddressOrNull(dss, bytesToBytes32(abi.encodePacked("PIP_", gem)))),
            GemJoinAbstract(getAddressOrNull(dss, bytesToBytes32(abi.encodePacked("MCD_JOIN_", gem, "_", variant)))),
            ClipAbstract(getAddressOrNull(dss, bytesToBytes32(abi.encodePacked("MCD_CLIP_", gem, "_", variant))))
        );
    }

    /// @dev Initialize a dummy ilk with a $1 DSValue pip without liquidations
    function initIlk(
        DssInstance memory dss,
        bytes32 ilk
    ) internal {
        DSValue pip = new DSValue();
        pip.poke(bytes32(WAD));
        initIlk(dss, ilk, address(0), address(pip));
    }

    /// @dev Initialize an ilk with a $1 DSValue pip without liquidations
    function initIlk(
        DssInstance memory dss,
        bytes32 ilk,
        address join
    ) internal {
        DSValue pip = new DSValue();
        pip.poke(bytes32(WAD));
        initIlk(dss, ilk, join, address(pip));
    }

    /// @dev Initialize an ilk without liquidations
    function initIlk(
        DssInstance memory dss,
        bytes32 ilk,
        address join,
        address pip
    ) internal {
        dss.vat.init(ilk);
        dss.jug.init(ilk);

        dss.vat.rely(join);

        dss.spotter.file(ilk, "pip", pip);
        dss.spotter.file(ilk, "mat", RAY);
        dss.spotter.poke(ilk);
    }

    /// @dev Initialize an ilk with liquidations
    function initIlk(
        DssInstance memory dss,
        bytes32 ilk,
        address join,
        address pip,
        address clip,
        address clipCalc
    ) internal {
        initIlk(dss, ilk, join, pip);

        // TODO liquidations
        clip; clipCalc;
    }