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pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@contracts/DebitaProxyContract.sol";

interface DLOImplementation {
    struct LendInfo {
        address lendOrderAddress;
        bool perpetual;
        bool lonelyLender;
        bool[] oraclesPerPairActivated;
        uint[] maxLTVs;
        uint apr;
        uint maxDuration;
        uint minDuration;
        address owner;
        address principle;
        address[] acceptedCollaterals;
        address[] oracle_Collaterals;
        uint[] maxRatio;
        address oracle_Principle;
        uint startedLendingAmount;
        uint availableAmount;
    }

    function getLendInfo() external view returns (LendInfo memory);
    function isActive() external view returns (bool);

    function initialize(
        address _aggregatorContract,
        bool _perpetual,
        bool[] memory _oraclesActivated,
        bool _lonelyLender,
        uint[] memory _LTVs,
        uint _apr,
        uint _maxDuration,
        uint _minDuration,
        address _owner,
        address _principle,
        address[] memory _acceptedCollaterals,
        address[] memory _oracles_Collateral,
        uint[] memory _ratio,
        address _oracleID_Principle,
        uint _startedLendingAmount
    ) external;
}

contract DLOFactory {
    event LendOrderCreated(
        address indexed lendOrder,
        address indexed owner,
        uint apr,
        uint maxDuration,
        uint minDuration,
        uint[] LTVs,
        uint[] Ratios,
        uint availableAmount,
        bool isActive,
        bool perpetual
    );
    event LendOrderUpdated(
        address indexed lendOrder,
        address indexed owner,
        uint apr,
        uint maxDuration,
        uint minDuration,
        uint[] LTVs,
        uint[] Ratios,
        uint availableAmount,
        bool isActive,
        bool perpetual
    );
    event LendOrderDeleted(
        address indexed lendOrder,
        address indexed owner,
        uint apr,
        uint maxDuration,
        uint minDuration,
        uint[] LTVs,
        uint[] Ratios,
        uint availableAmount,
        bool isActive,
        bool perpetual
    );

    mapping(address => bool) public isLendOrderLegit; // is lend order a legit order from the factory
    mapping(address => uint) public LendOrderIndex; // index of the lend order in the allActiveLendOrders array
    mapping(uint => address) public allActiveLendOrders; // all active lend orders

    uint public activeOrdersCount;
    address aggregatorContract;
    address public implementationContract;
    address public owner;

    constructor(address _implementationContract) {
        owner = msg.sender;

        implementationContract = _implementationContract;
    }

    modifier onlyLendOrder() {
        require(isLendOrderLegit[msg.sender], "Only lend order");
        _;
    }
    /**
     * @dev Create a new lend order
        * @param _perpetual is the lend order perpetual (compunding interest, every time the borrower pays the interest, the tokens come back to the order so the lender can lend it again)
        * @param _oraclesActivated array of booleans to activate oracles for each pair with collateral
        * @param _lonelyLender if true, the lend order is only for one lender
        * @param _LTVs array of max LTVs for each collateral
        * @param _apr annual percentage rate you want to lend the tokens for
        * @param _maxDuration max duration of the loan
        * @param _minDuration min duration of the loan
        * @param _acceptedCollaterals array of accepted collaterals
        * @param _principle address of the principle token
        * @param _oracles_Collateral array of oracles for each collateral
        * @param _ratio array of max ratios for each collateral
        * @param _oracleID_Principle address of the oracle for the principle token
        * @param _startedLendingAmount initial amount of the principle token that is available for lending
        * @return address of the new lend order

     */
    function createLendOrder(
        bool _perpetual,
        bool[] memory _oraclesActivated,
        bool _lonelyLender,
        uint[] memory _LTVs,
        uint _apr,
        uint _maxDuration,
        uint _minDuration,
        address[] memory _acceptedCollaterals,
        address _principle,
        address[] memory _oracles_Collateral,
        uint[] memory _ratio,
        address _oracleID_Principle,
        uint _startedLendingAmount
    ) external returns (address) {
        require(_minDuration <= _maxDuration, "Invalid duration");
        require(_LTVs.length == _acceptedCollaterals.length, "Invalid LTVs");
        require(
            _oracles_Collateral.length == _acceptedCollaterals.length,
            "Invalid length"
        );
        require(
            _oraclesActivated.length == _acceptedCollaterals.length,
            "Invalid oracles"
        );
        require(_ratio.length == _acceptedCollaterals.length, "Invalid ratio");

        DebitaProxyContract lendOfferProxy = new DebitaProxyContract(
            implementationContract
        );

        DLOImplementation lendOffer = DLOImplementation(
            address(lendOfferProxy)
        );

        lendOffer.initialize(
            aggregatorContract,
            _perpetual,
            _oraclesActivated,
            _lonelyLender,
            _LTVs,
            _apr,
            _maxDuration,
            _minDuration,
            msg.sender,
            _principle,
            _acceptedCollaterals,
            _oracles_Collateral,
            _ratio,
            _oracleID_Principle,
            _startedLendingAmount
        );

        SafeERC20.safeTransferFrom(
            IERC20(_principle),
            msg.sender,
            address(lendOffer),
            _startedLendingAmount
        );

        uint balance = IERC20(_principle).balanceOf(address(lendOffer));
        require(balance >= _startedLendingAmount, "Transfer failed");
        isLendOrderLegit[address(lendOffer)] = true;
        LendOrderIndex[address(lendOffer)] = activeOrdersCount;
        allActiveLendOrders[activeOrdersCount] = address(lendOffer);
        activeOrdersCount++;
        emit LendOrderCreated(
            address(lendOffer),
            msg.sender,
            _apr,
            _maxDuration,
            _minDuration,
            _LTVs,
            _ratio,
            _startedLendingAmount,
            true,
            _perpetual
        );
        return address(lendOffer);
    }

    // function to delete a lend order from index
    // only lend order can call this function
    function deleteOrder(address _lendOrder) external onlyLendOrder {
        uint index = LendOrderIndex[_lendOrder];
        LendOrderIndex[_lendOrder] = 0;

        // switch index of the last borrow order to the deleted borrow order
        allActiveLendOrders[index] = allActiveLendOrders[activeOrdersCount - 1];
        LendOrderIndex[allActiveLendOrders[activeOrdersCount - 1]] = index;

        // take out last borrow order

        allActiveLendOrders[activeOrdersCount - 1] = address(0);

        activeOrdersCount--;
    }

    function getActiveOrders(
        uint offset,
        uint limit
    ) public returns (DLOImplementation.LendInfo[] memory) {
        uint length = limit;
        if (length > activeOrdersCount) {
            length = activeOrdersCount;
        }

        DLOImplementation.LendInfo[]
            memory result = new DLOImplementation.LendInfo[](length - offset);

        for (uint i = 0; (i + offset) < limit; i++) {
            if ((i + offset) > (activeOrdersCount) - 1) {
                break;
            }
            result[i] = DLOImplementation(allActiveLendOrders[offset + i])
                .getLendInfo();
        }

        return result;
    }

    function setAggregatorContract(address _aggregatorContract) external {
        require(msg.sender == owner, "Only owner can set aggregator contract");
        require(aggregatorContract == address(0), "Already set");
        aggregatorContract = _aggregatorContract;
    }

    function emitUpdate(address _lendOrder) external onlyLendOrder {
        DLOImplementation lendOrder = DLOImplementation(_lendOrder);
        DLOImplementation.LendInfo memory lendInfo = lendOrder.getLendInfo();
        emit LendOrderUpdated(
            _lendOrder,
            lendInfo.owner,
            lendInfo.apr,
            lendInfo.maxDuration,
            lendInfo.minDuration,
            lendInfo.maxLTVs,
            lendInfo.maxRatio,
            lendInfo.availableAmount,
            lendOrder.isActive(),
            lendInfo.perpetual
        );
    }
    function emitDelete(address _lendOrder) external onlyLendOrder {
        DLOImplementation lendOrder = DLOImplementation(_lendOrder);
        DLOImplementation.LendInfo memory lendInfo = lendOrder.getLendInfo();
        emit LendOrderDeleted(
            _lendOrder,
            lendInfo.owner,
            lendInfo.apr,
            lendInfo.maxDuration,
            lendInfo.minDuration,
            lendInfo.maxLTVs,
            lendInfo.maxRatio,
            lendInfo.availableAmount,
            lendOrder.isActive(),
            lendInfo.perpetual
        );
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.2.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 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 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @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.encodeCall(token.transfer, (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.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, 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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @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.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

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

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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 {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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 silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/proxy/Proxy.sol";
contract DebitaProxyContract is Proxy {
    constructor(address _logic) {
        bytes32 implementationPosition = bytes32(
            uint256(keccak256("eip1967.implementationSlot")) - 1
        );
        assembly {
            sstore(implementationPosition, _logic)
        }
    }
    function _implementation() internal view override returns (address) {
        bytes32 implementationPosition = bytes32(
            uint256(keccak256("eip1967.implementationSlot")) - 1
        );
        address implementationAddress;
        // sload and return implementationPosition
        assembly {
            implementationAddress := sload(implementationPosition)
        }
        return implementationAddress;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC1363.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/Proxy.sol)

pragma solidity ^0.8.20;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback
     * function and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)

pragma solidity ^0.8.20;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

{
  "remappings": [
    "@pythnetwork/pyth-sdk-solidity/=node_modules/@pythnetwork/pyth-sdk-solidity/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@contracts/=contracts/",
    "@aerodrome/=lib/contracts/contracts/",
    "forge-std/=lib/forge-std/src/",
    "@redstone-finance/evm-connector/dist/contracts/=lib/redstone-oracles-monorepo/packages/evm-connector/contracts/",
    "@chainlink/=lib/foundry-chainlink-toolkit/",
    "@opengsn/=lib/contracts/lib/gsn/packages/",
    "@uniswap/v3-core/=lib/contracts/lib/v3-core/",
    "chainlink-brownie-contracts/=lib/foundry-chainlink-toolkit/lib/chainlink-brownie-contracts/contracts/src/v0.6/vendor/@arbitrum/nitro-contracts/src/",
    "contracts/=lib/contracts/contracts/",
    "ds-test/=lib/contracts/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "foundry-chainlink-toolkit/=lib/foundry-chainlink-toolkit/",
    "gsn/=lib/contracts/lib/",
    "halmos-cheatcodes/=lib/openzeppelin-contracts/lib/halmos-cheatcodes/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "redstone-oracles-monorepo/=lib/redstone-oracles-monorepo/",
    "utils/=lib/contracts/test/utils/",
    "v3-core/=lib/contracts/lib/v3-core/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "shanghai",
  "viaIR": true,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_implementationContract","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"lendOrder","type":"address"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"apr","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"maxDuration","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"minDuration","type":"uint256"},{"indexed":false,"internalType":"uint256[]","name":"LTVs","type":"uint256[]"},{"indexed":false,"internalType":"uint256[]","name":"Ratios","type":"uint256[]"},{"indexed":false,"internalType":"uint256","name":"availableAmount","type":"uint256"},{"indexed":false,"internalType":"bool","name":"isActive","type":"bool"},{"indexed":false,"internalType":"bool","name":"perpetual","type":"bool"}],"name":"LendOrderCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"lendOrder","type":"address"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"apr","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"maxDuration","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"minDuration","type":"uint256"},{"indexed":false,"internalType":"uint256[]","name":"LTVs","type":"uint256[]"},{"indexed":false,"internalType":"uint256[]","name":"Ratios","type":"uint256[]"},{"indexed":false,"internalType":"uint256","name":"availableAmount","type":"uint256"},{"indexed":false,"internalType":"bool","name":"isActive","type":"bool"},{"indexed":false,"internalType":"bool","name":"perpetual","type":"bool"}],"name":"LendOrderDeleted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"lendOrder","type":"address"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"apr","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"maxDuration","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"minDuration","type":"uint256"},{"indexed":false,"internalType":"uint256[]","name":"LTVs","type":"uint256[]"},{"indexed":false,"internalType":"uint256[]","name":"Ratios","type":"uint256[]"},{"indexed":false,"internalType":"uint256","name":"availableAmount","type":"uint256"},{"indexed":false,"internalType":"bool","name":"isActive","type":"bool"},{"indexed":false,"internalType":"bool","name":"perpetual","type":"bool"}],"name":"LendOrderUpdated","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"LendOrderIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"activeOrdersCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"allActiveLendOrders","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"_perpetual","type":"bool"},{"internalType":"bool[]","name":"_oraclesActivated","type":"bool[]"},{"internalType":"bool","name":"_lonelyLender","type":"bool"},{"internalType":"uint256[]","name":"_LTVs","type":"uint256[]"},{"internalType":"uint256","name":"_apr","type":"uint256"},{"internalType":"uint256","name":"_maxDuration","type":"uint256"},{"internalType":"uint256","name":"_minDuration","type":"uint256"},{"internalType":"address[]","name":"_acceptedCollaterals","type":"address[]"},{"internalType":"address","name":"_principle","type":"address"},{"internalType":"address[]","name":"_oracles_Collateral","type":"address[]"},{"internalType":"uint256[]","name":"_ratio","type":"uint256[]"},{"internalType":"address","name":"_oracleID_Principle","type":"address"},{"internalType":"uint256","name":"_startedLendingAmount","type":"uint256"}],"name":"createLendOrder","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_lendOrder","type":"address"}],"name":"deleteOrder","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_lendOrder","type":"address"}],"name":"emitDelete","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_lendOrder","type":"address"}],"name":"emitUpdate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"offset","type":"uint256"},{"internalType":"uint256","name":"limit","type":"uint256"}],"name":"getActiveOrders","outputs":[{"components":[{"internalType":"address","name":"lendOrderAddress","type":"address"},{"internalType":"bool","name":"perpetual","type":"bool"},{"internalType":"bool","name":"lonelyLender","type":"bool"},{"internalType":"bool[]","name":"oraclesPerPairActivated","type":"bool[]"},{"internalType":"uint256[]","name":"maxLTVs","type":"uint256[]"},{"internalType":"uint256","name":"apr","type":"uint256"},{"internalType":"uint256","name":"maxDuration","type":"uint256"},{"internalType":"uint256","name":"minDuration","type":"uint256"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"principle","type":"address"},{"internalType":"address[]","name":"acceptedCollaterals","type":"address[]"},{"internalType":"address[]","name":"oracle_Collaterals","type":"address[]"},{"internalType":"uint256[]","name":"maxRatio","type":"uint256[]"},{"internalType":"address","name":"oracle_Principle","type":"address"},{"internalType":"uint256","name":"startedLendingAmount","type":"uint256"},{"internalType":"uint256","name":"availableAmount","type":"uint256"}],"internalType":"struct DLOImplementation.LendInfo[]","name":"","type":"tuple[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementationContract","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"isLendOrderLegit","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_aggregatorContract","type":"address"}],"name":"setAggregatorContract","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000003ac4f83dd109ba480d66bba202392d4df03e7d8d

-----Decoded View---------------
Arg [0] : _implementationContract (address): 0x3aC4F83Dd109ba480D66BbA202392D4df03E7d8D

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000003ac4f83dd109ba480d66bba202392d4df03e7d8d