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// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

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

import "../helpers/Utils.sol";
import "../interfaces/core/IModule.sol";
import "../interfaces/main/ICyanPaymentPlanV2.sol";
import "../thirdparty/IWETH.sol";

import { AddressProvider } from "../main/AddressProvider.sol";

/// @title Cyan Wallet's Cyan Payment Plan Module - A Cyan wallet's Cyan Payment Plan handling module.
/// @author Bulgantamir Gankhuyag - <[email protected]>
/// @author Naranbayar Uuganbayar - <[email protected]>
contract CyanPaymentPlanV2Module is IModule {
    AddressProvider private constant addressProvider = AddressProvider(0xCF9A19D879769aDaE5e4f31503AAECDa82568E55);

    /// @inheritdoc IModule
    function handleTransaction(
        address to,
        uint256 value,
        bytes calldata data
    ) external payable override returns (bytes memory) {
        return Utils._execute(to, value, data);
    }

    function autoPay(
        uint256 planId,
        uint256 payAmount,
        uint8 autoRepayStatus
    ) external payable {
        ICyanPaymentPlanV2 paymentPlanContract = ICyanPaymentPlanV2(msg.sender);
        address currencyAddress = paymentPlanContract.getCurrencyAddressByPlanId(planId);
        if (currencyAddress == address(0)) {
            if (autoRepayStatus == 2) {
                // Auto-repaying from main wallet
                address wethAddress = addressProvider.addresses("WETH");
                if (wethAddress == address(0)) revert AddressProvider.AddressNotFound("WETH");

                IWETH weth = IWETH(wethAddress);
                require(weth.balanceOf(address(this)) >= payAmount, "Not enough ETH in the wallet.");
                weth.withdraw(payAmount);
            } else {
                require(address(this).balance >= payAmount, "Not enough ETH in the wallet.");
            }

            paymentPlanContract.pay{ value: payAmount }(planId, false);
        } else {
            IERC20 erc20 = IERC20(currencyAddress);
            require(erc20.balanceOf(address(this)) >= payAmount, "Not enough balance in the wallet.");

            address conduitAddress = addressProvider.addresses("CYAN_CONDUIT");
            if (erc20.allowance(address(this), conduitAddress) < payAmount) {
                erc20.approve(conduitAddress, type(uint256).max);
            }
            paymentPlanContract.pay(planId, false);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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 v4.7.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
        }
        _balances[to] += amount;

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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 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
pragma solidity 0.8.19;

library Utils {
    /// @notice Executes a transaction to the given address.
    /// @param to Target address.
    /// @param value Native token value to be sent to the address.
    /// @param data Data to be sent to the address.
    /// @return result Result of the transaciton.
    function _execute(
        address to,
        uint256 value,
        bytes memory data
    ) internal returns (bytes memory result) {
        assembly {
            let success := call(gas(), to, value, add(data, 0x20), mload(data), 0, 0)

            mstore(result, returndatasize())
            returndatacopy(add(result, 0x20), 0, returndatasize())

            if eq(success, 0) {
                revert(add(result, 0x20), returndatasize())
            }
        }
    }

    /// @notice Recover signer address from signature.
    /// @param signedHash Arbitrary length data signed on the behalf of the wallet.
    /// @param signature Signature byte array associated with signedHash.
    /// @return Recovered signer address.
    function recoverSigner(bytes32 signedHash, bytes memory signature) internal pure returns (address) {
        uint8 v;
        bytes32 r;
        bytes32 s;
        // we jump 32 (0x20) as the first slot of bytes contains the length
        // we jump 65 (0x41) per signature
        // for v we load 32 bytes ending with v (the first 31 come from s) then apply a mask
        assembly {
            r := mload(add(signature, 0x20))
            s := mload(add(signature, 0x40))
            v := byte(0, mload(add(signature, 0x60)))
        }
        require(v == 27 || v == 28, "Bad v value in signature.");

        address recoveredAddress = ecrecover(signedHash, v, r, s);
        require(recoveredAddress != address(0), "ecrecover returned 0.");
        return recoveredAddress;
    }

    /// @notice Helper method to parse the function selector from data.
    /// @param data Any data to be parsed, mostly calldata of transaction.
    /// @return result Parsed function sighash.
    function parseFunctionSelector(bytes memory data) internal pure returns (bytes4 result) {
        require(data.length >= 4, "Invalid data.");
        assembly {
            result := mload(add(data, 0x20))
        }
    }

    /// @notice Parse uint256 from given data.
    /// @param data Any data to be parsed, mostly calldata of transaction.
    /// @param position Position in the data.
    /// @return result Uint256 parsed from given data.
    function getUint256At(bytes memory data, uint8 position) internal pure returns (uint256 result) {
        assembly {
            result := mload(add(data, add(position, 0x20)))
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

interface IModule {
    /// @notice Executes given transaction data to given address.
    /// @param to Target contract address.
    /// @param value Value of the given transaction.
    /// @param data Calldata of the transaction.
    /// @return Result of the execution.
    function handleTransaction(
        address to,
        uint256 value,
        bytes calldata data
    ) external payable returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

import { PaymentPlanStatus } from "../../main/payment-plan/PaymentPlanTypes.sol";

interface ICyanPaymentPlanV2 {
    function pay(uint256, bool) external payable;

    function getPlanStatus(uint256) external view returns (PaymentPlanStatus);

    function getCurrencyAddressByPlanId(uint256) external view returns (address);

    function earlyUnwindOpensea(
        uint256,
        uint256[2] calldata,
        uint256,
        bytes memory,
        uint256,
        bytes memory
    ) external;

    function earlyUnwindCyan(
        uint256,
        uint256[2] calldata,
        uint256,
        address,
        uint256,
        bytes memory
    ) external;

    function liquidate(
        uint256,
        uint256[2] calldata,
        uint256
    ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

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

/// @title Cyan AddressProvider contract
/// @author Bulgantamir Gankhuyag - <[email protected]>
/// @author Naranbayar Uuganbayar - <[email protected]>
contract AddressProvider is Ownable {
    error AddressNotFound(bytes32 id);

    event AddressSet(bytes32 id, address newAddress);

    mapping(bytes32 => address) public addresses;

    constructor(address owner) {
        transferOwnership(owner);
    }

    // @dev Sets an address for an id replacing the address saved in the addresses map
    // @param id The id
    // @param newAddress The address to set
    function setAddress(bytes32 id, address newAddress) external onlyOwner {
        addresses[id] = newAddress;
        emit AddressSet(id, newAddress);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

// DataTypes
enum PawnCreateType {
    REGULAR,
    BEND_DAO,
    REFINANCE
}
enum PaymentPlanStatus {
    BNPL_CREATED,
    BNPL_FUNDED,
    BNPL_ACTIVE,
    BNPL_DEFAULTED,
    BNPL_REJECTED,
    BNPL_COMPLETED,
    BNPL_LIQUIDATED,
    PAWN_ACTIVE,
    PAWN_DEFAULTED,
    PAWN_COMPLETED,
    PAWN_LIQUIDATED
}
struct Plan {
    uint256 amount;
    uint32 downPaymentPercent;
    uint32 interestRate;
    uint32 serviceFeeRate;
    uint32 term;
    uint8 totalNumberOfPayments;
    uint8 counterPaidPayments;
    uint8 autoRepayStatus;
}
struct PaymentPlan {
    Plan plan;
    uint256 createdDate;
    address cyanWalletAddress;
    PaymentPlanStatus status;
}

struct Item {
    uint256 amount;
    uint256 tokenId;
    address contractAddress;
    address cyanVaultAddress;
    // 1 -> ERC721
    // 2 -> ERC1155
    // 3 -> CryptoPunks
    uint8 itemType;
}

struct PaymentAmountInfo {
    uint256 loanAmount;
    uint256 interestAmount;
    uint256 serviceAmount;
}

// Errors
error InvalidSender();
error InvalidBlockNumber();
error InvalidSignature();
error InvalidServiceFeeRate();
error InvalidTokenPrice();
error InvalidInterestRate();
error InvalidDownPaymentPercent();
error InvalidDownPayment();
error InvalidAmount();
error InvalidTerm();
error InvalidPaidCount();
error InvalidStage();
error InvalidAddress();
error InvalidAutoRepaymentDate();
error InvalidAutoRepaymentStatus();
error InvalidTotalNumberOfPayments();
error InvalidReviveDate();
error InvalidItem();
error InvalidBaseDiscountRate();
error InvalidApeCoinPlan();
error InvalidBendDaoPlan();
error InvalidCurrency();
error InvalidCyanBuyer();
error InvalidSelector();

error EthTransferFailed();

error PaymentPlanAlreadyExists();
error PaymentPlanNotFound();

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

/// @title Wrapped Etheruem Contract interface
interface IWETH is IERC20 {
    function withdraw(uint256 wad) external;

    function deposit() external payable;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 500
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"AddressNotFound","type":"error"},{"inputs":[{"internalType":"uint256","name":"planId","type":"uint256"},{"internalType":"uint256","name":"payAmount","type":"uint256"},{"internalType":"uint8","name":"autoRepayStatus","type":"uint8"}],"name":"autoPay","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"handleTransaction","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"}]

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