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// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity 0.8.15;

import {ERC20} from "solmate/tokens/ERC20.sol";
import {ReentrancyGuard} from "solmate/utils/ReentrancyGuard.sol";

import {TransferHelper} from "libraries/TransferHelper.sol";

import {TRSRYv1} from "src/modules/TRSRY/TRSRY.v1.sol";
import "src/Kernel.sol";

/// @notice Treasury holds all other assets under the control of the protocol.
contract OlympusTreasury is TRSRYv1, ReentrancyGuard {
    using TransferHelper for ERC20;

    //============================================================================================//
    //                                      MODULE SETUP                                          //
    //============================================================================================//

    constructor(Kernel kernel_) Module(kernel_) {
        active = true;
    }

    /// @inheritdoc Module
    function KEYCODE() public pure override returns (Keycode) {
        return toKeycode("TRSRY");
    }

    /// @inheritdoc Module
    function VERSION() external pure override returns (uint8 major, uint8 minor) {
        major = 1;
        minor = 0;
    }

    //============================================================================================//
    //                                       CORE FUNCTIONS                                       //
    //============================================================================================//

    /// @inheritdoc TRSRYv1
    function increaseWithdrawApproval(
        address withdrawer_,
        ERC20 token_,
        uint256 amount_
    ) external override permissioned {
        uint256 approval = withdrawApproval[withdrawer_][token_];

        uint256 newAmount = type(uint256).max - approval <= amount_
            ? type(uint256).max
            : approval + amount_;
        withdrawApproval[withdrawer_][token_] = newAmount;

        emit IncreaseWithdrawApproval(withdrawer_, token_, newAmount);
    }

    /// @inheritdoc TRSRYv1
    function decreaseWithdrawApproval(
        address withdrawer_,
        ERC20 token_,
        uint256 amount_
    ) external override permissioned {
        uint256 approval = withdrawApproval[withdrawer_][token_];

        uint256 newAmount = approval <= amount_ ? 0 : approval - amount_;
        withdrawApproval[withdrawer_][token_] = newAmount;

        emit DecreaseWithdrawApproval(withdrawer_, token_, newAmount);
    }

    /// @inheritdoc TRSRYv1
    function withdrawReserves(
        address to_,
        ERC20 token_,
        uint256 amount_
    ) public override permissioned onlyWhileActive {
        withdrawApproval[msg.sender][token_] -= amount_;

        token_.safeTransfer(to_, amount_);

        emit Withdrawal(msg.sender, to_, token_, amount_);
    }

    // =========  DEBT FUNCTIONS ========= //

    /// @inheritdoc TRSRYv1
    function increaseDebtorApproval(
        address debtor_,
        ERC20 token_,
        uint256 amount_
    ) external override permissioned {
        uint256 newAmount = debtApproval[debtor_][token_] + amount_;
        debtApproval[debtor_][token_] = newAmount;
        emit IncreaseDebtorApproval(debtor_, token_, newAmount);
    }

    /// @inheritdoc TRSRYv1
    function decreaseDebtorApproval(
        address debtor_,
        ERC20 token_,
        uint256 amount_
    ) external override permissioned {
        uint256 newAmount = debtApproval[debtor_][token_] - amount_;
        debtApproval[debtor_][token_] = newAmount;
        emit DecreaseDebtorApproval(debtor_, token_, newAmount);
    }

    /// @inheritdoc TRSRYv1
    function incurDebt(ERC20 token_, uint256 amount_)
        external
        override
        permissioned
        onlyWhileActive
    {
        debtApproval[msg.sender][token_] -= amount_;

        // Add debt to caller
        reserveDebt[token_][msg.sender] += amount_;
        totalDebt[token_] += amount_;

        token_.safeTransfer(msg.sender, amount_);

        emit DebtIncurred(token_, msg.sender, amount_);
    }

    /// @inheritdoc TRSRYv1
    function repayDebt(
        address debtor_,
        ERC20 token_,
        uint256 amount_
    ) external override permissioned nonReentrant {
        if (reserveDebt[token_][debtor_] == 0) revert TRSRY_NoDebtOutstanding();

        // Deposit from caller first (to handle nonstandard token transfers)
        uint256 prevBalance = token_.balanceOf(address(this));
        token_.safeTransferFrom(msg.sender, address(this), amount_);

        uint256 received = token_.balanceOf(address(this)) - prevBalance;

        // Choose minimum between passed-in amount and received amount
        if (received > amount_) received = amount_;

        // Subtract debt from debtor
        reserveDebt[token_][debtor_] -= received;
        totalDebt[token_] -= received;

        emit DebtRepaid(token_, debtor_, received);
    }

    /// @inheritdoc TRSRYv1
    function setDebt(
        address debtor_,
        ERC20 token_,
        uint256 amount_
    ) external override permissioned {
        uint256 oldDebt = reserveDebt[token_][debtor_];

        reserveDebt[token_][debtor_] = amount_;

        if (oldDebt < amount_) totalDebt[token_] += amount_ - oldDebt;
        else totalDebt[token_] -= oldDebt - amount_;

        emit DebtSet(token_, debtor_, amount_);
    }

    /// @inheritdoc TRSRYv1
    function deactivate() external override permissioned {
        active = false;
    }

    /// @inheritdoc TRSRYv1
    function activate() external override permissioned {
        active = true;
    }

    //============================================================================================//
    //                                       VIEW FUNCTIONS                                       //
    //============================================================================================//

    /// @inheritdoc TRSRYv1
    function getReserveBalance(ERC20 token_) external view override returns (uint256) {
        return token_.balanceOf(address(this)) + totalDebt[token_];
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 amount);

    event Approval(address indexed owner, address indexed spender, uint256 amount);

    /*//////////////////////////////////////////////////////////////
                            METADATA STORAGE
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    uint8 public immutable decimals;

    /*//////////////////////////////////////////////////////////////
                              ERC20 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;

    mapping(address => mapping(address => uint256)) public allowance;

    /*//////////////////////////////////////////////////////////////
                            EIP-2612 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 internal immutable INITIAL_CHAIN_ID;

    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;

    mapping(address => uint256) public nonces;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals
    ) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }

    /*//////////////////////////////////////////////////////////////
                               ERC20 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);

        return true;
    }

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);

        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

        if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);

        return true;
    }

    /*//////////////////////////////////////////////////////////////
                             EIP-2612 LOGIC
    //////////////////////////////////////////////////////////////*/

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            address recoveredAddress = ecrecover(
                keccak256(
                    abi.encodePacked(
                        "\x19\x01",
                        DOMAIN_SEPARATOR(),
                        keccak256(
                            abi.encode(
                                keccak256(
                                    "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
                                ),
                                owner,
                                spender,
                                value,
                                nonces[owner]++,
                                deadline
                            )
                        )
                    )
                ),
                v,
                r,
                s
            );

            require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");

            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(address(0), to, amount);
    }

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        // Cannot underflow because a user's balance
        // will never be larger than the total supply.
        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Gas optimized reentrancy protection for smart contracts.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/utils/ReentrancyGuard.sol)
/// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol)
abstract contract ReentrancyGuard {
    uint256 private locked = 1;

    modifier nonReentrant() virtual {
        require(locked == 1, "REENTRANCY");

        locked = 2;

        _;

        locked = 1;
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity 0.8.15;

//     ███████    █████       █████ █████ ██████   ██████ ███████████  █████  █████  █████████
//   ███░░░░░███ ░░███       ░░███ ░░███ ░░██████ ██████ ░░███░░░░░███░░███  ░░███  ███░░░░░███
//  ███     ░░███ ░███        ░░███ ███   ░███░█████░███  ░███    ░███ ░███   ░███ ░███    ░░░
// ░███      ░███ ░███         ░░█████    ░███░░███ ░███  ░██████████  ░███   ░███ ░░█████████
// ░███      ░███ ░███          ░░███     ░███ ░░░  ░███  ░███░░░░░░   ░███   ░███  ░░░░░░░░███
// ░░███     ███  ░███      █    ░███     ░███      ░███  ░███         ░███   ░███  ███    ░███
//  ░░░███████░   ███████████    █████    █████     █████ █████        ░░████████  ░░█████████
//    ░░░░░░░    ░░░░░░░░░░░    ░░░░░    ░░░░░     ░░░░░ ░░░░░          ░░░░░░░░    ░░░░░░░░░

//============================================================================================//
//                                        GLOBAL TYPES                                        //
//============================================================================================//

/// @notice Actions to trigger state changes in the kernel. Passed by the executor
enum Actions {
    InstallModule,
    UpgradeModule,
    ActivatePolicy,
    DeactivatePolicy,
    ChangeExecutor,
    MigrateKernel
}

/// @notice Used by executor to select an action and a target contract for a kernel action
struct Instruction {
    Actions action;
    address target;
}

/// @notice Used to define which module functions a policy needs access to
struct Permissions {
    Keycode keycode;
    bytes4 funcSelector;
}

type Keycode is bytes5;

//============================================================================================//
//                                       UTIL FUNCTIONS                                       //
//============================================================================================//

error TargetNotAContract(address target_);
error InvalidKeycode(Keycode keycode_);

// solhint-disable-next-line func-visibility
function toKeycode(bytes5 keycode_) pure returns (Keycode) {
    return Keycode.wrap(keycode_);
}

// solhint-disable-next-line func-visibility
function fromKeycode(Keycode keycode_) pure returns (bytes5) {
    return Keycode.unwrap(keycode_);
}

// solhint-disable-next-line func-visibility
function ensureContract(address target_) view {
    if (target_.code.length == 0) revert TargetNotAContract(target_);
}

// solhint-disable-next-line func-visibility
function ensureValidKeycode(Keycode keycode_) pure {
    bytes5 unwrapped = Keycode.unwrap(keycode_);
    for (uint256 i = 0; i < 5; ) {
        bytes1 char = unwrapped[i];
        if (char < 0x41 || char > 0x5A) revert InvalidKeycode(keycode_); // A-Z only
        unchecked {
            i++;
        }
    }
}

//============================================================================================//
//                                        COMPONENTS                                          //
//============================================================================================//

/// @notice Generic adapter interface for kernel access in modules and policies.
abstract contract KernelAdapter {
    error KernelAdapter_OnlyKernel(address caller_);

    Kernel public kernel;

    constructor(Kernel kernel_) {
        kernel = kernel_;
    }

    /// @notice Modifier to restrict functions to be called only by kernel.
    modifier onlyKernel() {
        if (msg.sender != address(kernel)) revert KernelAdapter_OnlyKernel(msg.sender);
        _;
    }

    /// @notice Function used by kernel when migrating to a new kernel.
    function changeKernel(Kernel newKernel_) external onlyKernel {
        kernel = newKernel_;
    }
}

/// @notice Base level extension of the kernel. Modules act as independent state components to be
///         interacted with and mutated through policies.
/// @dev    Modules are installed and uninstalled via the executor.
abstract contract Module is KernelAdapter {
    error Module_PolicyNotPermitted(address policy_);

    constructor(Kernel kernel_) KernelAdapter(kernel_) {}

    /// @notice Modifier to restrict which policies have access to module functions.
    modifier permissioned() {
        if (!kernel.modulePermissions(KEYCODE(), Policy(msg.sender), msg.sig))
            revert Module_PolicyNotPermitted(msg.sender);
        _;
    }

    /// @notice 5 byte identifier for a module.
    function KEYCODE() public pure virtual returns (Keycode) {}

    /// @notice Returns which semantic version of a module is being implemented.
    /// @return major - Major version upgrade indicates breaking change to the interface.
    /// @return minor - Minor version change retains backward-compatible interface.
    function VERSION() external pure virtual returns (uint8 major, uint8 minor) {}

    /// @notice Initialization function for the module
    /// @dev    This function is called when the module is installed or upgraded by the kernel.
    /// @dev    MUST BE GATED BY onlyKernel. Used to encompass any initialization or upgrade logic.
    function INIT() external virtual onlyKernel {}
}

/// @notice Policies are application logic and external interface for the kernel and installed modules.
/// @dev    Policies are activated and deactivated in the kernel by the executor.
/// @dev    Module dependencies and function permissions must be defined in appropriate functions.
abstract contract Policy is KernelAdapter {
    error Policy_ModuleDoesNotExist(Keycode keycode_);

    constructor(Kernel kernel_) KernelAdapter(kernel_) {}

    /// @notice Easily accessible indicator for if a policy is activated or not.
    function isActive() external view returns (bool) {
        return kernel.isPolicyActive(this);
    }

    /// @notice Function to grab module address from a given keycode.
    function getModuleAddress(Keycode keycode_) internal view returns (address) {
        address moduleForKeycode = address(kernel.getModuleForKeycode(keycode_));
        if (moduleForKeycode == address(0)) revert Policy_ModuleDoesNotExist(keycode_);
        return moduleForKeycode;
    }

    /// @notice Define module dependencies for this policy.
    /// @return dependencies - Keycode array of module dependencies.
    function configureDependencies() external virtual returns (Keycode[] memory dependencies) {}

    /// @notice Function called by kernel to set module function permissions.
    /// @return requests - Array of keycodes and function selectors for requested permissions.
    function requestPermissions() external view virtual returns (Permissions[] memory requests) {}
}

/// @notice Main contract that acts as a central component registry for the protocol.
/// @dev    The kernel manages modules and policies. The kernel is mutated via predefined Actions,
/// @dev    which are input from any address assigned as the executor. The executor can be changed as needed.
contract Kernel {
    // =========  EVENTS ========= //

    event PermissionsUpdated(
        Keycode indexed keycode_,
        Policy indexed policy_,
        bytes4 funcSelector_,
        bool granted_
    );
    event ActionExecuted(Actions indexed action_, address indexed target_);

    // =========  ERRORS ========= //

    error Kernel_OnlyExecutor(address caller_);
    error Kernel_ModuleAlreadyInstalled(Keycode module_);
    error Kernel_InvalidModuleUpgrade(Keycode module_);
    error Kernel_PolicyAlreadyActivated(address policy_);
    error Kernel_PolicyNotActivated(address policy_);

    // =========  PRIVILEGED ADDRESSES ========= //

    /// @notice Address that is able to initiate Actions in the kernel. Can be assigned to a multisig or governance contract.
    address public executor;

    // =========  MODULE MANAGEMENT ========= //

    /// @notice Array of all modules currently installed.
    Keycode[] public allKeycodes;

    /// @notice Mapping of module address to keycode.
    mapping(Keycode => Module) public getModuleForKeycode;

    /// @notice Mapping of keycode to module address.
    mapping(Module => Keycode) public getKeycodeForModule;

    /// @notice Mapping of a keycode to all of its policy dependents. Used to efficiently reconfigure policy dependencies.
    mapping(Keycode => Policy[]) public moduleDependents;

    /// @notice Helper for module dependent arrays. Prevents the need to loop through array.
    mapping(Keycode => mapping(Policy => uint256)) public getDependentIndex;

    /// @notice Module <> Policy Permissions.
    /// @dev    Keycode -> Policy -> Function Selector -> bool for permission
    mapping(Keycode => mapping(Policy => mapping(bytes4 => bool))) public modulePermissions;

    // =========  POLICY MANAGEMENT ========= //

    /// @notice List of all active policies
    Policy[] public activePolicies;

    /// @notice Helper to get active policy quickly. Prevents need to loop through array.
    mapping(Policy => uint256) public getPolicyIndex;

    //============================================================================================//
    //                                       CORE FUNCTIONS                                       //
    //============================================================================================//

    constructor() {
        executor = msg.sender;
    }

    /// @notice Modifier to check if caller is the executor.
    modifier onlyExecutor() {
        if (msg.sender != executor) revert Kernel_OnlyExecutor(msg.sender);
        _;
    }

    function isPolicyActive(Policy policy_) public view returns (bool) {
        return activePolicies.length > 0 && activePolicies[getPolicyIndex[policy_]] == policy_;
    }

    /// @notice Main kernel function. Initiates state changes to kernel depending on Action passed in.
    function executeAction(Actions action_, address target_) external onlyExecutor {
        if (action_ == Actions.InstallModule) {
            ensureContract(target_);
            ensureValidKeycode(Module(target_).KEYCODE());
            _installModule(Module(target_));
        } else if (action_ == Actions.UpgradeModule) {
            ensureContract(target_);
            ensureValidKeycode(Module(target_).KEYCODE());
            _upgradeModule(Module(target_));
        } else if (action_ == Actions.ActivatePolicy) {
            ensureContract(target_);
            _activatePolicy(Policy(target_));
        } else if (action_ == Actions.DeactivatePolicy) {
            ensureContract(target_);
            _deactivatePolicy(Policy(target_));
        } else if (action_ == Actions.ChangeExecutor) {
            executor = target_;
        } else if (action_ == Actions.MigrateKernel) {
            ensureContract(target_);
            _migrateKernel(Kernel(target_));
        }

        emit ActionExecuted(action_, target_);
    }

    function _installModule(Module newModule_) internal {
        Keycode keycode = newModule_.KEYCODE();

        if (address(getModuleForKeycode[keycode]) != address(0))
            revert Kernel_ModuleAlreadyInstalled(keycode);

        getModuleForKeycode[keycode] = newModule_;
        getKeycodeForModule[newModule_] = keycode;
        allKeycodes.push(keycode);

        newModule_.INIT();
    }

    function _upgradeModule(Module newModule_) internal {
        Keycode keycode = newModule_.KEYCODE();
        Module oldModule = getModuleForKeycode[keycode];

        if (address(oldModule) == address(0) || oldModule == newModule_)
            revert Kernel_InvalidModuleUpgrade(keycode);

        getKeycodeForModule[oldModule] = Keycode.wrap(bytes5(0));
        getKeycodeForModule[newModule_] = keycode;
        getModuleForKeycode[keycode] = newModule_;

        newModule_.INIT();

        _reconfigurePolicies(keycode);
    }

    function _activatePolicy(Policy policy_) internal {
        if (isPolicyActive(policy_)) revert Kernel_PolicyAlreadyActivated(address(policy_));

        // Add policy to list of active policies
        activePolicies.push(policy_);
        getPolicyIndex[policy_] = activePolicies.length - 1;

        // Record module dependencies
        Keycode[] memory dependencies = policy_.configureDependencies();
        uint256 depLength = dependencies.length;

        for (uint256 i; i < depLength; ) {
            Keycode keycode = dependencies[i];

            moduleDependents[keycode].push(policy_);
            getDependentIndex[keycode][policy_] = moduleDependents[keycode].length - 1;

            unchecked {
                ++i;
            }
        }

        // Grant permissions for policy to access restricted module functions
        Permissions[] memory requests = policy_.requestPermissions();
        _setPolicyPermissions(policy_, requests, true);
    }

    function _deactivatePolicy(Policy policy_) internal {
        if (!isPolicyActive(policy_)) revert Kernel_PolicyNotActivated(address(policy_));

        // Revoke permissions
        Permissions[] memory requests = policy_.requestPermissions();
        _setPolicyPermissions(policy_, requests, false);

        // Remove policy from all policy data structures
        uint256 idx = getPolicyIndex[policy_];
        Policy lastPolicy = activePolicies[activePolicies.length - 1];

        activePolicies[idx] = lastPolicy;
        activePolicies.pop();
        getPolicyIndex[lastPolicy] = idx;
        delete getPolicyIndex[policy_];

        // Remove policy from module dependents
        _pruneFromDependents(policy_);
    }

    /// @notice All functionality will move to the new kernel. WARNING: ACTION WILL BRICK THIS KERNEL.
    /// @dev    New kernel must add in all of the modules and policies via executeAction.
    /// @dev    NOTE: Data does not get cleared from this kernel.
    function _migrateKernel(Kernel newKernel_) internal {
        uint256 keycodeLen = allKeycodes.length;
        for (uint256 i; i < keycodeLen; ) {
            Module module = Module(getModuleForKeycode[allKeycodes[i]]);
            module.changeKernel(newKernel_);
            unchecked {
                ++i;
            }
        }

        uint256 policiesLen = activePolicies.length;
        for (uint256 j; j < policiesLen; ) {
            Policy policy = activePolicies[j];

            // Deactivate before changing kernel
            policy.changeKernel(newKernel_);
            unchecked {
                ++j;
            }
        }
    }

    function _reconfigurePolicies(Keycode keycode_) internal {
        Policy[] memory dependents = moduleDependents[keycode_];
        uint256 depLength = dependents.length;

        for (uint256 i; i < depLength; ) {
            dependents[i].configureDependencies();

            unchecked {
                ++i;
            }
        }
    }

    function _setPolicyPermissions(
        Policy policy_,
        Permissions[] memory requests_,
        bool grant_
    ) internal {
        uint256 reqLength = requests_.length;
        for (uint256 i = 0; i < reqLength; ) {
            Permissions memory request = requests_[i];
            modulePermissions[request.keycode][policy_][request.funcSelector] = grant_;

            emit PermissionsUpdated(request.keycode, policy_, request.funcSelector, grant_);

            unchecked {
                ++i;
            }
        }
    }

    function _pruneFromDependents(Policy policy_) internal {
        Keycode[] memory dependencies = policy_.configureDependencies();
        uint256 depcLength = dependencies.length;

        for (uint256 i; i < depcLength; ) {
            Keycode keycode = dependencies[i];
            Policy[] storage dependents = moduleDependents[keycode];

            uint256 origIndex = getDependentIndex[keycode][policy_];
            Policy lastPolicy = dependents[dependents.length - 1];

            // Swap with last and pop
            dependents[origIndex] = lastPolicy;
            dependents.pop();

            // Record new index and delete deactivated policy index
            getDependentIndex[keycode][lastPolicy] = origIndex;
            delete getDependentIndex[keycode][policy_];

            unchecked {
                ++i;
            }
        }
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

import {ERC20} from "solmate/tokens/ERC20.sol";

/// @notice Safe ERC20 and ETH transfer library that safely handles missing return values.
/// @author Modified from Uniswap & old Solmate (https://github.com/Uniswap/uniswap-v3-periphery/blob/main/contracts/libraries/TransferHelper.sol)
library TransferHelper {
    function safeTransferFrom(
        ERC20 token,
        address from,
        address to,
        uint256 amount
    ) internal {
        (bool success, bytes memory data) = address(token).call(
            abi.encodeWithSelector(ERC20.transferFrom.selector, from, to, amount)
        );

        require(success && (data.length == 0 || abi.decode(data, (bool))), "TRANSFER_FROM_FAILED");
    }

    function safeTransfer(
        ERC20 token,
        address to,
        uint256 amount
    ) internal {
        (bool success, bytes memory data) = address(token).call(
            abi.encodeWithSelector(ERC20.transfer.selector, to, amount)
        );

        require(success && (data.length == 0 || abi.decode(data, (bool))), "TRANSFER_FAILED");
    }

    function safeApprove(
        ERC20 token,
        address to,
        uint256 amount
    ) internal {
        (bool success, bytes memory data) = address(token).call(
            abi.encodeWithSelector(ERC20.approve.selector, to, amount)
        );

        require(success && (data.length == 0 || abi.decode(data, (bool))), "APPROVE_FAILED");
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity 0.8.15;

import {ERC20} from "solmate/tokens/ERC20.sol";
import "src/Kernel.sol";

/// @notice Treasury holds all other assets under the control of the protocol.
abstract contract TRSRYv1 is Module {
    // =========  EVENTS ========= //

    event IncreaseWithdrawApproval(
        address indexed withdrawer_,
        ERC20 indexed token_,
        uint256 newAmount_
    );
    event DecreaseWithdrawApproval(
        address indexed withdrawer_,
        ERC20 indexed token_,
        uint256 newAmount_
    );
    event Withdrawal(
        address indexed policy_,
        address indexed withdrawer_,
        ERC20 indexed token_,
        uint256 amount_
    );
    event IncreaseDebtorApproval(address indexed debtor_, ERC20 indexed token_, uint256 newAmount_);
    event DecreaseDebtorApproval(address indexed debtor_, ERC20 indexed token_, uint256 newAmount_);
    event DebtIncurred(ERC20 indexed token_, address indexed policy_, uint256 amount_);
    event DebtRepaid(ERC20 indexed token_, address indexed policy_, uint256 amount_);
    event DebtSet(ERC20 indexed token_, address indexed policy_, uint256 amount_);

    // =========  ERRORS ========= //

    error TRSRY_NoDebtOutstanding();
    error TRSRY_NotActive();

    // =========  STATE ========= //

    /// @notice Status of the treasury. If false, no withdrawals or debt can be incurred.
    bool public active;

    /// @notice Mapping of who is approved for withdrawal.
    /// @dev    withdrawer -> token -> amount. Infinite approval is max(uint256).
    mapping(address => mapping(ERC20 => uint256)) public withdrawApproval;

    /// @notice Mapping of who is approved to incur debt.
    /// @dev    debtor -> token -> amount. Infinite approval is max(uint256).
    mapping(address => mapping(ERC20 => uint256)) public debtApproval;

    /// @notice Total debt for token across all withdrawals.
    mapping(ERC20 => uint256) public totalDebt;

    /// @notice Debt for particular token and debtor address
    mapping(ERC20 => mapping(address => uint256)) public reserveDebt;

    // =========  FUNCTIONS ========= //

    modifier onlyWhileActive() {
        if (!active) revert TRSRY_NotActive();
        _;
    }

    /// @notice Increase approval for specific withdrawer addresses
    function increaseWithdrawApproval(
        address withdrawer_,
        ERC20 token_,
        uint256 amount_
    ) external virtual;

    /// @notice Decrease approval for specific withdrawer addresses
    function decreaseWithdrawApproval(
        address withdrawer_,
        ERC20 token_,
        uint256 amount_
    ) external virtual;

    /// @notice Allow withdrawal of reserve funds from pre-approved addresses.
    function withdrawReserves(
        address to_,
        ERC20 token_,
        uint256 amount_
    ) external virtual;

    /// @notice Increase approval for someone to accrue debt in order to withdraw reserves.
    /// @dev    Debt will generally be taken by contracts to allocate treasury funds in yield sources.
    function increaseDebtorApproval(
        address debtor_,
        ERC20 token_,
        uint256 amount_
    ) external virtual;

    /// @notice Decrease approval for someone to withdraw reserves as debt.
    function decreaseDebtorApproval(
        address debtor_,
        ERC20 token_,
        uint256 amount_
    ) external virtual;

    /// @notice Pre-approved policies can get a loan to perform operations with treasury assets.
    function incurDebt(ERC20 token_, uint256 amount_) external virtual;

    /// @notice Repay a debtor debt.
    /// @dev    Only confirmed to safely handle standard and non-standard ERC20s.
    /// @dev    Can have unforeseen consequences with ERC777. Be careful with ERC777 as reserve.
    function repayDebt(
        address debtor_,
        ERC20 token_,
        uint256 amount_
    ) external virtual;

    /// @notice An escape hatch for setting debt in special cases, like swapping reserves to another token.
    function setDebt(
        address debtor_,
        ERC20 token_,
        uint256 amount_
    ) external virtual;

    /// @notice Get total balance of assets inside the treasury + any debt taken out against those assets.
    function getReserveBalance(ERC20 token_) external view virtual returns (uint256);

    /// @notice Emergency shutdown of withdrawals.
    function deactivate() external virtual;

    /// @notice Re-activate withdrawals after shutdown.
    function activate() external virtual;
}

{
  "remappings": [
    "balancer-v2/=lib/balancer-v2/",
    "bonds/=lib/bonds/src/",
    "ds-test/=lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "hardhat/=node_modules/hardhat/",
    "interfaces/=src/interfaces/",
    "libraries/=src/libraries/",
    "modules/=src/modules/",
    "policies/=src/policies/",
    "solmate/=lib/solmate/src/",
    "test/=src/test/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 10
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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ERC20","name":"","type":"address"}],"name":"withdrawApproval","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to_","type":"address"},{"internalType":"contract ERC20","name":"token_","type":"address"},{"internalType":"uint256","name":"amount_","type":"uint256"}],"name":"withdrawReserves","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000002286d7f9639e8158fad1169e76d1fbc38247f54b

-----Decoded View---------------
Arg [0] : kernel_ (address): 0x2286d7f9639e8158FaD1169e76d1FbC38247f54b

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000002286d7f9639e8158fad1169e76d1fbc38247f54b