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//   _   _   _ _  _____  ___    _ __   ____  __      __  __ _               _   _             ___         _               _
//  | | | | | | |/ / __|/ _ \  | |\ \ / /\ \/ /___  |  \/  (_)__ _ _ _ __ _| |_(_)___ _ _    / __|___ _ _| |_ _ _ __ _ __| |_
//  | |_| |_| | ' <\__ \ (_) | | |_\ V /  >  </ -_) | |\/| | / _` | '_/ _` |  _| / _ \ ' \  | (__/ _ \ ' \  _| '_/ _` / _|  _|
//  |____\___/|_|\_\___/\___/  |____|_|  /_/\_\___| |_|  |_|_\__, |_| \__,_|\__|_\___/_||_|  \___\___/_||_\__|_| \__,_\__|\__|
//                                                           |___/

// SPDX-License-Identifier: CC0-1.0
pragma solidity 0.8.17;

// interfaces
import {
    IERC1820Registry
} from "@openzeppelin/contracts/interfaces/IERC1820Registry.sol";
import {IERC165} from "@openzeppelin/contracts/interfaces/IERC165.sol";
import {
    IERC777Recipient
} from "@openzeppelin/contracts/token/ERC777/IERC777Recipient.sol";

// modules
import {Ownable2Step} from "@openzeppelin/contracts/access/Ownable2Step.sol";

contract LUKSOMigrationDepositContract is
    IERC777Recipient,
    IERC165,
    Ownable2Step
{
    // The SenderDepositData struct stores the data of a deposit made by a sender
    struct SenderDepositData {
        address destinationAddress;
        uint96 amount;
        uint256 depositId;
    }

    // The DestinationDepositData struct stores the data of a deposit made to a destination
    struct DestinationDepositData {
        address senderAddress;
        uint96 amount;
        uint256 depositId;
    }

    // The DepositData struct stores the data of a deposit
    struct DepositData {
        address senderAddress;
        address destinationAddress;
        uint96 amount;
    }

    // The address of the LYXe token contract.
    address public constant LYX_TOKEN_CONTRACT_ADDRESS =
        0xA8b919680258d369114910511cc87595aec0be6D;

    // The address of the registry contract (ERC1820 Registry).
    address public constant ERC1820_REGISTRY_ADDRESS =
        0x1820a4B7618BdE71Dce8cdc73aAB6C95905faD24;

    // The hash of the interface of the contract that receives tokens.
    bytes32 private constant TOKENS_RECIPIENT_INTERFACE_HASH =
        0xb281fc8c12954d22544db45de3159a39272895b169a852b314f9cc762e44c53b;

    // The deposit id
    uint256 public migrationDepositCount;

    // Determines whether the contract is paused or not. Deposits are disabled and not allowed while the contract is paused.
    bool public paused;

    // The '_senderDeposits' mapping stores an array of depositId for each sender address
    mapping(address => uint256[]) private _senderDeposits;

    // The '_destinationDeposits' mapping stores an array of depositId for each destination address
    mapping(address => uint256[]) private _destinationDeposits;

    // The '_deposits' mapping stores the DepositData struct of a depositId
    mapping(uint256 => DepositData) private _deposits;

    /**
     * @param sender The address of the sender migrating LYXe.
     * @param destinationAddress The address on the LUKSO main network that will receive the equivalent `amount` in LYX.
     * @param amount The amount of LYXe being migrated.
     * @param depositId The unique identifier associated with this particular migration transaction.
     * @param extraData Optional additional data related to the migration transaction.
     */
    event Deposit(
        address indexed sender,
        address indexed destinationAddress,
        uint256 amount,
        uint256 indexed depositId,
        bytes extraData
    );

    // Emits a pause status changed event.
    event PauseStatusChanged(bool newPauseStatus);

    constructor(address owner_) {
        // Set this contract as the implementer of the tokens recipient interface in the registry contract.
        IERC1820Registry(ERC1820_REGISTRY_ADDRESS).setInterfaceImplementer(
            address(this),
            TOKENS_RECIPIENT_INTERFACE_HASH,
            address(this)
        );

        // Set the paused state to false
        paused = false;
        emit PauseStatusChanged(false);

        // Set the owner
        _transferOwnership(owner_);
    }

    /**
     * @dev Whenever this contract receives LYXe tokens, it must be for the reason of
     * migrating LYXe.
     */
    function tokensReceived(
        address /* operator */,
        address sender_,
        address /* to */,
        uint256 amount_,
        bytes calldata depositData_,
        bytes calldata /* operatorData */
    ) external {
        // Check if the caller is the LYXe token contract.
        require(
            msg.sender == LYX_TOKEN_CONTRACT_ADDRESS,
            "LUKSOMigrationDepositContract: Only LYXe can be migrated"
        );

        // Check that we are migrating at least 1 LYXe
        require(
            amount_ >= 1 ether,
            "LUKSOMigrationDepositContract: A minimum of 1 LYXe is required"
        );

        // Check if depositData length is superior to 20
        require(
            depositData_.length >= 20,
            "LUKSOMigrationDepositContract: depositData length must be superior to 20"
        );

        // Check that the contract is not paused.
        require(!paused, "LUKSOMigrationDepositContract: Contract is paused");

        // Check if the deposit amount is not bigger than the maximum uint96 value.
        require(
            amount_ < type(uint96).max,
            "LUKSOMigrationDepositContract: LYXe amount too large"
        );

        uint96 migrationDepositAmount = uint96(amount_);

        address destinationAddress = address(bytes20(depositData_));

        uint256 depositId = migrationDepositCount++;

        // Append the depositId to the sender's deposits array.
        _senderDeposits[sender_].push(depositId);

        // Append the depositId to the destination's deposits array.
        _destinationDeposits[destinationAddress].push(depositId);

        // Store the deposit data
        _deposits[depositId] = DepositData(
            sender_,
            destinationAddress,
            migrationDepositAmount
        );

        // Emit the Deposit event with the sender, the migration address and the amount.
        emit Deposit(
            sender_,
            destinationAddress,
            amount_,
            depositId,
            depositData_[20:]
        );
    }

    /**
     * @dev Only the owner can pause the contract.
     * @param pauseStatus The status of the pause.
     */
    function setPaused(bool pauseStatus) external onlyOwner {
        require(
            paused != pauseStatus,
            "LUKSOMigrationDepositContract: Pause status is already set to this value"
        );
        paused = pauseStatus;

        emit PauseStatusChanged(pauseStatus);
    }

    /**
     * @dev Query the deposits made by a given address.
     *
     * @param senderAddress_ The address of the sender whose deposits should be queried.
     * @return An array representing each SenderDepositData made successively by the `sender_`.
     */
    function getDepositsBySenderAddress(
        address senderAddress_
    ) external view returns (SenderDepositData[] memory) {
        uint256[] memory senderDepositsIds = _senderDeposits[senderAddress_];
        uint256 numberOfDeposits = senderDepositsIds.length;

        SenderDepositData[] memory senderDepositsList = new SenderDepositData[](
            numberOfDeposits
        );

        for (uint256 i = 0; i < numberOfDeposits; i++) {
            uint256 depositId = senderDepositsIds[i];
            DepositData memory deposit = _deposits[depositId];

            senderDepositsList[i] = SenderDepositData(
                deposit.destinationAddress,
                deposit.amount,
                depositId
            );
        }

        return senderDepositsList;
    }

    /**
     * @dev Query the migrations made to a given address.
     *
     * @param destinationAddress_ The address of the destination whose migrations should be queried.
     * @return An array representing each DestinationDepositData made successively to the `destinationAddress_`.
     */
    function getDepositsByDestinationAddress(
        address destinationAddress_
    ) external view returns (DestinationDepositData[] memory) {
        uint256[] memory destinationDepositsIds = _destinationDeposits[
            destinationAddress_
        ];
        uint256 numberOfDeposits = destinationDepositsIds.length;

        DestinationDepositData[]
            memory destinationDepositsList = new DestinationDepositData[](
                numberOfDeposits
            );

        for (uint256 i = 0; i < numberOfDeposits; i++) {
            uint256 depositId = destinationDepositsIds[i];
            DepositData memory deposit = _deposits[depositId];

            destinationDepositsList[i] = DestinationDepositData(
                deposit.senderAddress,
                deposit.amount,
                depositId
            );
        }

        return destinationDepositsList;
    }

    /**
     * @dev Query the deposit data of a given depositId.
     *
     * @param depositId_ The depositId of the deposit to query.
     * @return The DepositData of the deposit.
     */
    function getDeposit(
        uint256 depositId_
    ) external view returns (DepositData memory) {
        return _deposits[depositId_];
    }

    /**
     * @dev Determines whether the contract supports a given interface.
     *
     * @param interfaceId The interface ID to check.
     * @return True if the contract supports the interface, false otherwise.
     */
    function supportsInterface(
        bytes4 interfaceId
    ) external pure override returns (bool) {
        return
            interfaceId == type(IERC165).interfaceId ||
            interfaceId == type(IERC777Recipient).interfaceId;
    }
}

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

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.0;

import "./Ownable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

    event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Returns the address of the pending owner.
     */
    function pendingOwner() public view virtual returns (address) {
        return _pendingOwner;
    }

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner");
        _transferOwnership(sender);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)

pragma solidity ^0.8.0;

import "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1820Registry.sol)

pragma solidity ^0.8.0;

import "../utils/introspection/IERC1820Registry.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC777/IERC777Recipient.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC777TokensRecipient standard as defined in the EIP.
 *
 * Accounts can be notified of {IERC777} tokens being sent to them by having a
 * contract implement this interface (contract holders can be their own
 * implementer) and registering it on the
 * https://eips.ethereum.org/EIPS/eip-1820[ERC1820 global registry].
 *
 * See {IERC1820Registry} and {ERC1820Implementer}.
 */
interface IERC777Recipient {
    /**
     * @dev Called by an {IERC777} token contract whenever tokens are being
     * moved or created into a registered account (`to`). The type of operation
     * is conveyed by `from` being the zero address or not.
     *
     * This call occurs _after_ the token contract's state is updated, so
     * {IERC777-balanceOf}, etc., can be used to query the post-operation state.
     *
     * This function may revert to prevent the operation from being executed.
     */
    function tokensReceived(
        address operator,
        address from,
        address to,
        uint256 amount,
        bytes calldata userData,
        bytes calldata operatorData
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * 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[EIP 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/introspection/IERC1820Registry.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the global ERC1820 Registry, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1820[EIP]. Accounts may register
 * implementers for interfaces in this registry, as well as query support.
 *
 * Implementers may be shared by multiple accounts, and can also implement more
 * than a single interface for each account. Contracts can implement interfaces
 * for themselves, but externally-owned accounts (EOA) must delegate this to a
 * contract.
 *
 * {IERC165} interfaces can also be queried via the registry.
 *
 * For an in-depth explanation and source code analysis, see the EIP text.
 */
interface IERC1820Registry {
    event InterfaceImplementerSet(address indexed account, bytes32 indexed interfaceHash, address indexed implementer);

    event ManagerChanged(address indexed account, address indexed newManager);

    /**
     * @dev Sets `newManager` as the manager for `account`. A manager of an
     * account is able to set interface implementers for it.
     *
     * By default, each account is its own manager. Passing a value of `0x0` in
     * `newManager` will reset the manager to this initial state.
     *
     * Emits a {ManagerChanged} event.
     *
     * Requirements:
     *
     * - the caller must be the current manager for `account`.
     */
    function setManager(address account, address newManager) external;

    /**
     * @dev Returns the manager for `account`.
     *
     * See {setManager}.
     */
    function getManager(address account) external view returns (address);

    /**
     * @dev Sets the `implementer` contract as ``account``'s implementer for
     * `interfaceHash`.
     *
     * `account` being the zero address is an alias for the caller's address.
     * The zero address can also be used in `implementer` to remove an old one.
     *
     * See {interfaceHash} to learn how these are created.
     *
     * Emits an {InterfaceImplementerSet} event.
     *
     * Requirements:
     *
     * - the caller must be the current manager for `account`.
     * - `interfaceHash` must not be an {IERC165} interface id (i.e. it must not
     * end in 28 zeroes).
     * - `implementer` must implement {IERC1820Implementer} and return true when
     * queried for support, unless `implementer` is the caller. See
     * {IERC1820Implementer-canImplementInterfaceForAddress}.
     */
    function setInterfaceImplementer(address account, bytes32 _interfaceHash, address implementer) external;

    /**
     * @dev Returns the implementer of `interfaceHash` for `account`. If no such
     * implementer is registered, returns the zero address.
     *
     * If `interfaceHash` is an {IERC165} interface id (i.e. it ends with 28
     * zeroes), `account` will be queried for support of it.
     *
     * `account` being the zero address is an alias for the caller's address.
     */
    function getInterfaceImplementer(address account, bytes32 _interfaceHash) external view returns (address);

    /**
     * @dev Returns the interface hash for an `interfaceName`, as defined in the
     * corresponding
     * https://eips.ethereum.org/EIPS/eip-1820#interface-name[section of the EIP].
     */
    function interfaceHash(string calldata interfaceName) external pure returns (bytes32);

    /**
     * @notice Updates the cache with whether the contract implements an ERC165 interface or not.
     * @param account Address of the contract for which to update the cache.
     * @param interfaceId ERC165 interface for which to update the cache.
     */
    function updateERC165Cache(address account, bytes4 interfaceId) external;

    /**
     * @notice Checks whether a contract implements an ERC165 interface or not.
     * If the result is not cached a direct lookup on the contract address is performed.
     * If the result is not cached or the cached value is out-of-date, the cache MUST be updated manually by calling
     * {updateERC165Cache} with the contract address.
     * @param account Address of the contract to check.
     * @param interfaceId ERC165 interface to check.
     * @return True if `account` implements `interfaceId`, false otherwise.
     */
    function implementsERC165Interface(address account, bytes4 interfaceId) external view returns (bool);

    /**
     * @notice Checks whether a contract implements an ERC165 interface or not without using or updating the cache.
     * @param account Address of the contract to check.
     * @param interfaceId ERC165 interface to check.
     * @return True if `account` implements `interfaceId`, false otherwise.
     */
    function implementsERC165InterfaceNoCache(address account, bytes4 interfaceId) external view returns (bool);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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000000000000000000000000116a3afef5fb69256bd24ee13752f7654aaa933a

-----Decoded View---------------
Arg [0] : owner_ (address): 0x116a3aFEf5fB69256Bd24ee13752f7654aaa933a

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000116a3afef5fb69256bd24ee13752f7654aaa933a