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pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Origami (periphery/OrigamiBorrowLendMigrator.sol)

import { IOrigamiFlashLoanReceiver } from "contracts/interfaces/common/flashLoan/IOrigamiFlashLoanReceiver.sol";
import { IOrigamiFlashLoanProvider } from "contracts/interfaces/common/flashLoan/IOrigamiFlashLoanProvider.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IOrigamiBorrowAndLend } from "contracts/interfaces/common/borrowAndLend/IOrigamiBorrowAndLend.sol";
import { OrigamiElevatedAccess } from "contracts/common/access/OrigamiElevatedAccess.sol";
import { CommonEventsAndErrors } from "contracts/libraries/CommonEventsAndErrors.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/**
 * @notice Migrate a borrow and lend position from and old contract to a new
 * contract, using a flashloan
 * 1/ Flashloan debt token - enough to repay the entire debt
 * 2/ repayAndWithdraw(entire_debt, entire_collateral)
 * 3/ supplyAndBorrow(entire_collateral, entire_debt)
 * 4/ repay flashloan
 * 
 * It's the MULTISIG's responsibility to do this within a single multisig transaction:
 *   a/ Deploy the newBorrowLend
 *   b/ newBorrowLend.setPositionOwner(oldBorrowLend.positionOwner())
 *   c/ GRANT access for this migrator to call oldBorrowLend.repayAndWithdraw()
 *   d/ GRANT access for this migrator to call newBorrowLend.supplyAndBorrow()
 *   e/ Call newBorrowLend.execute()
 *   f/ lovTokenManager.setBorrowLend(newBorrowLend);
 *   g/ REVOKE access for this migrator to call oldBorrowLend.repayAndWithdraw()
 *   h/ REVOKE access for this migrator to call newBorrowLend.supplyAndBorrow()
 */
contract OrigamiBorrowLendMigrator is IOrigamiFlashLoanReceiver, OrigamiElevatedAccess {
    using SafeERC20 for IERC20;

    /// @notice The Origami flashLoan provider contract, which may be via Aave/Spark/Balancer/etc
    IOrigamiFlashLoanProvider public immutable flashLoanProvider;

    /// @notice The old Origami borrow lend contract
    IOrigamiBorrowAndLend public immutable oldBorrowLend;

    /// @notice The new Origami borrow lend contract
    IOrigamiBorrowAndLend public immutable newBorrowLend;

    /// @notice The collateral token to migrate
    IERC20 public immutable collateralToken;

    /// @notice The debt token to migrate
    IERC20 public immutable debtToken;

    constructor(
        address _initialOwner,
        address _oldBorrowLend,
        address _newBorrowLend,
        address _flashLoanProvider
    ) OrigamiElevatedAccess(_initialOwner) {
        oldBorrowLend = IOrigamiBorrowAndLend(_oldBorrowLend);
        collateralToken = IERC20(oldBorrowLend.supplyToken());
        debtToken = IERC20(oldBorrowLend.borrowToken());

        newBorrowLend = IOrigamiBorrowAndLend(_newBorrowLend);
        flashLoanProvider = IOrigamiFlashLoanProvider(_flashLoanProvider);
    }

    /**
     * @notice only Elevated Access can execute the migration
     */
    function execute() external onlyElevatedAccess {
        // 1. Get the current debt
        uint256 debtAmount = oldBorrowLend.debtBalance();

        // 2. Flashloan that amount
        // When the payment is received, flashLoanCallback() will be called
        flashLoanProvider.flashLoan(
            debtToken,
            debtAmount,
            bytes("")
        );
    }

    /**
     * @notice Handle receiving the flashloan and do the migration
     * The exact amount of flashloan must be repaid to `flashLoanProvider` 
     * at the end of this function
     */
    function flashLoanCallback(
        IERC20 token,
        uint256 amount,
        uint256 fee,
        bytes calldata /*params*/
    ) external override returns (bool success) {
        if (msg.sender != address(flashLoanProvider)) revert CommonEventsAndErrors.InvalidAccess();
        if (address(token) != address(debtToken)) revert CommonEventsAndErrors.InvalidToken(address(token));
        if (fee > 0) revert CommonEventsAndErrors.InvalidParam();

        // 3. Repay entire debt, withdraw entire collateral and send to the new borrow lend
        debtToken.safeTransfer(address(oldBorrowLend), amount);
        uint256 suppliedCollateral = oldBorrowLend.suppliedBalance();
        (uint256 debtRepaidAmount, uint256 withdrawnAmount) = oldBorrowLend.repayAndWithdraw(
            type(uint256).max, // Use type(uint256).max to ensure it withdraws max shares including any rounding.
            suppliedCollateral, 
            address(newBorrowLend)
        );

        if (debtRepaidAmount != amount) revert CommonEventsAndErrors.InvalidAmount(address(debtToken), debtRepaidAmount);
        if (withdrawnAmount != suppliedCollateral) revert CommonEventsAndErrors.InvalidAmount(address(collateralToken), suppliedCollateral);

        // 4. Supply the collateral to the new borrow lend, and borrow the entire debt amount
        // The debt is sent to the flashLoanProvider for flashloan repayment.
        newBorrowLend.supplyAndBorrow(suppliedCollateral, amount, msg.sender);
        return true;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Origami (common/access/OrigamiElevatedAccessBase.sol)

import { OrigamiElevatedAccessBase } from "contracts/common/access/OrigamiElevatedAccessBase.sol";

/**
 * @notice Inherit to add Owner roles for DAO elevated access.
 */ 
abstract contract OrigamiElevatedAccess is OrigamiElevatedAccessBase {
    constructor(address initialOwner) {
        _init(initialOwner);
    }
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Origami (common/access/OrigamiElevatedAccessBase.sol)

import { IOrigamiElevatedAccess } from "contracts/interfaces/common/access/IOrigamiElevatedAccess.sol";
import { CommonEventsAndErrors } from "contracts/libraries/CommonEventsAndErrors.sol";

/**
 * @notice Inherit to add Owner roles for DAO elevated access.
 */ 
abstract contract OrigamiElevatedAccessBase is IOrigamiElevatedAccess {
    /**
     * @notice The address of the current owner.
     */ 
    address public override owner;

    /**
     * @notice Explicit approval for an address to execute a function.
     * allowedCaller => function selector => true/false
     */
    mapping(address => mapping(bytes4 => bool)) public override explicitFunctionAccess;

    /// @dev Track proposed owner
    address private _proposedNewOwner;

    function _init(address initialOwner) internal {
        if (owner != address(0)) revert CommonEventsAndErrors.InvalidAccess();
        if (initialOwner == address(0)) revert CommonEventsAndErrors.InvalidAddress(address(0));
        owner = initialOwner;
    }

    /**
     * @notice Proposes a new Owner.
     * Can only be called by the current owner
     */
    function proposeNewOwner(address account) external override onlyElevatedAccess {
        if (account == address(0)) revert CommonEventsAndErrors.InvalidAddress(account);
        emit NewOwnerProposed(owner, _proposedNewOwner, account);
        _proposedNewOwner = account;
    }

    /**
     * @notice Caller accepts the role as new Owner.
     * Can only be called by the proposed owner
     */
    function acceptOwner() external override {
        if (msg.sender != _proposedNewOwner) revert CommonEventsAndErrors.InvalidAccess();

        emit NewOwnerAccepted(owner, msg.sender);
        owner = msg.sender;
        delete _proposedNewOwner;
    }

    /**
     * @notice Grant `allowedCaller` the rights to call the function selectors in the access list.
     * @dev fnSelector == bytes4(keccak256("fn(argType1,argType2,...)"))
     */
    function setExplicitAccess(address allowedCaller, ExplicitAccess[] calldata access) external override onlyElevatedAccess {
        if (allowedCaller == address(0)) revert CommonEventsAndErrors.InvalidAddress(allowedCaller);
        ExplicitAccess memory _access;
        for (uint256 i; i < access.length; ++i) {
            _access = access[i];
            emit ExplicitAccessSet(allowedCaller, _access.fnSelector, _access.allowed);
            explicitFunctionAccess[allowedCaller][_access.fnSelector] = _access.allowed;
        }
    }

    function isElevatedAccess(address caller, bytes4 fnSelector) internal view returns (bool) {
        return (
            caller == owner || 
            explicitFunctionAccess[caller][fnSelector]
        );
    }

    /**
     * @notice The owner is allowed to call, or if explicit access has been given to the caller.
     * @dev Important: Only for use when called from an *external* contract. 
     * If a function with this modifier is called internally then the `msg.sig` 
     * will still refer to the top level externally called function.
     */
    modifier onlyElevatedAccess() {
        if (!isElevatedAccess(msg.sender, msg.sig)) revert CommonEventsAndErrors.InvalidAccess();
        _;
    }
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Origami (interfaces/common/access/IOrigamiElevatedAccess.sol)

/**
 * @notice Inherit to add Owner roles for DAO elevated access.
 */ 
interface IOrigamiElevatedAccess {
    event ExplicitAccessSet(address indexed account, bytes4 indexed fnSelector, bool indexed value);

    event NewOwnerProposed(address indexed oldOwner, address indexed oldProposedOwner, address indexed newProposedOwner);
    event NewOwnerAccepted(address indexed oldOwner, address indexed newOwner);

    struct ExplicitAccess {
        bytes4 fnSelector;
        bool allowed;
    }

    /**
     * @notice The address of the current owner.
     */ 
    function owner() external view returns (address);

    /**
     * @notice Explicit approval for an address to execute a function.
     * allowedCaller => function selector => true/false
     */
    function explicitFunctionAccess(address contractAddr, bytes4 functionSelector) external view returns (bool);

    /**
     * @notice Proposes a new Owner.
     * Can only be called by the current owner
     */
    function proposeNewOwner(address account) external;

    /**
     * @notice Caller accepts the role as new Owner.
     * Can only be called by the proposed owner
     */
    function acceptOwner() external;

    /**
     * @notice Grant `allowedCaller` the rights to call the function selectors in the access list.
     * @dev fnSelector == bytes4(keccak256("fn(argType1,argType2,...)"))
     */
    function setExplicitAccess(address allowedCaller, ExplicitAccess[] calldata access) external;
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Origami (interfaces/common/borrowAndLend/IOrigamiBorrowAndLend.sol)

/**
 * @notice An Origami abstraction over a borrow/lend money market for
 * a single `supplyToken` and a single `borrowToken`, for a given `positionOwner`
 */
interface IOrigamiBorrowAndLend {
    event PositionOwnerSet(address indexed account);
    event SurplusDebtReclaimed(uint256 amount, address indexed recipient);

    /**
     * @notice Set the position owner who can borrow/lend via this contract
     */
    function setPositionOwner(address account) external;

    /**
     * @notice Supply tokens as collateral
     */
    function supply(
        uint256 supplyAmount
    ) external;

    /**
     * @notice Withdraw collateral tokens to recipient
     * @dev Set `withdrawAmount` to type(uint256).max in order to withdraw the whole balance
     */
    function withdraw(
        uint256 withdrawAmount, 
        address recipient
    ) external returns (uint256 amountWithdrawn);

    /**
     * @notice Borrow tokens and send to recipient
     */
    function borrow(
        uint256 borrowAmount,
        address recipient
    ) external;

    /**
     * @notice Repay debt. 
     * @dev If `repayAmount` is set higher than the actual outstanding debt balance, it will be capped
     * to that outstanding debt balance
     * `debtRepaidAmount` return parameter will be capped to the outstanding debt balance.
     * Any surplus debtTokens (if debt fully repaid) will remain in this contract
     */
    function repay(
        uint256 repayAmount
    ) external returns (uint256 debtRepaidAmount);

    /**
     * @notice Repay debt and withdraw collateral in one step
     * @dev If `repayAmount` is set higher than the actual outstanding debt balance, it will be capped
     * to that outstanding debt balance
     * Set `withdrawAmount` to type(uint256).max in order to withdraw the whole balance
     * `debtRepaidAmount` return parameter will be capped to the outstanding debt amount.
     * Any surplus debtTokens (if debt fully repaid) will remain in this contract
     */
    function repayAndWithdraw(
        uint256 repayAmount, 
        uint256 withdrawAmount, 
        address recipient
    ) external returns (
        uint256 debtRepaidAmount,
        uint256 withdrawnAmount
    );

    /**
     * @notice Supply collateral and borrow in one step
     */
    function supplyAndBorrow(
        uint256 supplyAmount, 
        uint256 borrowAmount, 
        address recipient
    ) external;

    /**
     * @notice The approved owner of the borrow/lend position
     */
    function positionOwner() external view returns (address);

    /**
     * @notice The token supplied as collateral
     */
    function supplyToken() external view returns (address);

    /**
     * @notice The token which is borrowed
     */
    function borrowToken() external view returns (address);

    /**
     * @notice The current (manually tracked) balance of tokens supplied
     */
    function suppliedBalance() external view returns (uint256);

    /**
     * @notice The current debt balance of tokens borrowed
     */
    function debtBalance() external view returns (uint256);

    /**
     * @notice Whether a given Assets/Liabilities Ratio is safe, given the upstream
     * money market parameters
     */
    function isSafeAlRatio(uint256 alRatio) external view returns (bool);

    /**
     * @notice How many `supplyToken` are available to withdraw from collateral
     * from the entire protocol, assuming this contract has fully paid down its debt
     */
    function availableToWithdraw() external view returns (uint256);

    /**
     * @notice How much more capacity is available to supply
     */
    function availableToSupply() external view returns (
        uint256 supplyCap,
        uint256 available
    );

    /**
     * @notice How many `borrowToken` are available to borrow
     * from the entire protocol
     */
    function availableToBorrow() external view returns (uint256);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Origami (interfaces/common/flashLoan/IOrigamiFlashLoanProvider.sol)

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/**
 * @notice An Origami abstraction over FlashLoan providers
 */
interface IOrigamiFlashLoanProvider {
    /**
     * @notice Initiate a flashloan for a single token
     * The caller must implement the `IOrigamiFlashLoanReceiver()` interface.
     * @param token The ERC20 token to borrow
     * @param amount The amount to borrow
     * @param params Client specific abi encoded params which are passed through from the msg.sender 
     *               and into the `flashLoanCallback()` call
     */
    function flashLoan(
        IERC20 token, 
        uint256 amount, 
        bytes memory params
    ) external;
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Origami (interfaces/common/flashLoan/IOrigamiFlashLoanReceiver.sol)

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/**
 * @notice Handle Flash Loan callback's originated from a `IOrigamiFlashLoanProvider`
 */
interface IOrigamiFlashLoanReceiver {
    /**
     * @notice Invoked from IOrigamiFlashLoanProvider once a flash loan is successfully
     * received, to the msg.sender of `flashLoan()`
     * @dev Must return false (or revert) if handling within the callback failed.
     * @param token The ERC20 token which has been borrowed
     * @param amount The amount which has been borrowed
     * @param fee The flashloan fee amount (in the same token)
     * @param params Client specific abi encoded params which are passed through from the original `flashLoan()` call
     */
    function flashLoanCallback(
        IERC20 token,
        uint256 amount,
        uint256 fee,
        bytes calldata params
    ) external returns (bool success);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Origami (libraries/CommonEventsAndErrors.sol)

/// @notice A collection of common events and errors thrown within the Origami contracts
library CommonEventsAndErrors {
    error InsufficientBalance(address token, uint256 required, uint256 balance);
    error InvalidToken(address token);
    error InvalidParam();
    error InvalidAddress(address addr);
    error InvalidAmount(address token, uint256 amount);
    error ExpectedNonZero();
    error Slippage(uint256 minAmountExpected, uint256 actualAmount);
    error IsPaused();
    error UnknownExecuteError(bytes returndata);
    error InvalidAccess();
    error BreachedMaxTotalSupply(uint256 totalSupply, uint256 maxTotalSupply);

    event TokenRecovered(address indexed to, address indexed token, uint256 amount);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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000000000000000000000000781b4c57100738095222bd92d37b07ed034ab696000000000000000000000000df3d394669fe433713d170c6de85f02e260c1c34000000000000000000000000415a37462350c7b428d3310629f8b5520e18ddb1000000000000000000000000c8ee801b35a82743ba7f314623962a2bbfdbc90a

-----Decoded View---------------
Arg [0] : _initialOwner (address): 0x781B4c57100738095222bd92D37B07ed034AB696
Arg [1] : _oldBorrowLend (address): 0xDF3D394669Fe433713D170c6DE85f02E260c1c34
Arg [2] : _newBorrowLend (address): 0x415A37462350C7B428D3310629f8B5520e18dDB1
Arg [3] : _flashLoanProvider (address): 0xC8eE801b35a82743BA7F314623962a2bBfdbC90A

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 000000000000000000000000781b4c57100738095222bd92d37b07ed034ab696
Arg [1] : 000000000000000000000000df3d394669fe433713d170c6de85f02e260c1c34
Arg [2] : 000000000000000000000000415a37462350c7b428d3310629f8b5520e18ddb1
Arg [3] : 000000000000000000000000c8ee801b35a82743ba7f314623962a2bbfdbc90a