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// SPDX-License-Identifier: MIT

/*
 /$$   /$$ /$$$$$$$   /$$$$$$  /$$      /$$ /$$   /$$       /$$        /$$$$$$  /$$$$$$$   /$$$$$$$ 
| $$  /$$/| $$__  $$ /$$__  $$| $$  /$ | $$| $$$ | $$      | $$       /$$__  $$| $$__  $$ /$$__  $$
| $$ /$$/ | $$  \ $$| $$  \ $$| $$ /$$$| $$| $$$$| $$      | $$      | $$  \ $$| $$  \ $$| $$  \__/
| $$$$$/  | $$$$$$$/| $$  | $$| $$/$$ $$ $$| $$ $$ $$      | $$      | $$$$$$$$| $$$$$$$ |  $$$$$$ 
| $$  $$  | $$__  $$| $$  | $$| $$$$_  $$$$| $$  $$$$      | $$      | $$__  $$| $$__  $$ \____  $$
| $$\  $$ | $$  \ $$| $$  | $$| $$$/ \  $$$| $$\  $$$      | $$      | $$  | $$| $$  \ $$ /$$  \ $$
| $$ \  $$| $$  | $$|  $$$$$$/| $$/   \  $$| $$ \  $$      | $$$$$$$$| $$  | $$| $$$$$$$/|  $$$$$$/
|__/  \__/|__/  |__/ \______/ |__/     \__/|__/  \__/      |________/|__/  |__/|_______/  \______/ 

krownlabs.app
x.com/krownlabs
discord.gg/KTU4krfhrG

*/

pragma solidity ^0.8.20;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";

contract SonicRegistrar is Ownable, ReentrancyGuard {

    uint256 public constant THREECHAR = 15 ether;
    uint256 public constant FOURCHAR = 10 ether;
    uint256 public constant FIVECHAR = 7.5 ether;
    uint256 public constant SIXPLUSCHAR = 5 ether;

    uint256 public constant YEAR = 365 days;
    uint256 public constant MAX_REGISTRATION_YEARS = 5;
    
    struct DiscountTier {
        uint256 yearCount;
        uint256 discount;
    }
    
    DiscountTier[] public discountTiers;
    ISonicRegistry public registry;
    
    event DomainRegistered(string name, address owner, uint256 price, uint256 yearCount);
    event DomainRenewed(string name, uint256 tokenId, uint256 price, uint256 yearCount);
    event PaymentWithdrawn(address to, uint256 amount);
    
    constructor(address _registry) Ownable(msg.sender) {
        registry = ISonicRegistry(_registry);
        
        discountTiers.push(DiscountTier({yearCount: 2, discount: 500}));
        discountTiers.push(DiscountTier({yearCount: 3, discount: 1000}));
        discountTiers.push(DiscountTier({yearCount: 4, discount: 1500}));
        discountTiers.push(DiscountTier({yearCount: 5, discount: 2000}));
    }
    
    function getBasePrice(string memory name) public pure returns (uint256) {
        uint256 length = bytes(name).length;
        
        if (length == 3) return THREECHAR;
        if (length == 4) return FOURCHAR;
        if (length == 5) return FIVECHAR;
        return SIXPLUSCHAR;
    }
    
    function getDiscount(uint256 yearCount) public view returns (uint256) {
        if (yearCount == 1) return 0;
        
        for (uint256 i = 0; i < discountTiers.length; i++) {
            if (discountTiers[i].yearCount == yearCount) {
                return discountTiers[i].discount;
            }
        }
        return 0;
    }
    
    function calculatePrice(string memory name, uint256 yearCount) public view returns (uint256) {
        require(yearCount > 0 && yearCount <= MAX_REGISTRATION_YEARS, "Invalid year count");
        
        uint256 basePrice = getBasePrice(name);
        uint256 totalBasePrice = basePrice * yearCount;
        uint256 discount = getDiscount(yearCount);
        
        if (discount == 0) return totalBasePrice;
        
        uint256 discountAmount = (totalBasePrice * discount) / 10000;
        return totalBasePrice - discountAmount;
    }
    
    function register(string calldata name, uint256 yearCount) external payable nonReentrant {
        require(isValidName(name), "Invalid name");
        require(registry.available(name), "Name taken");
        require(yearCount > 0 && yearCount <= MAX_REGISTRATION_YEARS, "Invalid year count");
        
        uint256 price = calculatePrice(name, yearCount);
        require(msg.value == price, "Incorrect payment");
        
        registry.register(name, msg.sender, yearCount * YEAR);
        
        emit DomainRegistered(name, msg.sender, price, yearCount);
    }
    
    function renew(string calldata name, uint256 yearCount) external payable nonReentrant {
        uint256 tokenId = registry.nameToTokenId(name);
        require(tokenId != 0, "Domain not found");
        require(yearCount > 0 && yearCount <= MAX_REGISTRATION_YEARS, "Invalid year count");
        
        uint256 price = calculatePrice(name, yearCount);
        require(msg.value == price, "Incorrect payment");
        
        registry.extend(tokenId, yearCount * YEAR);
        
        emit DomainRenewed(name, tokenId, price, yearCount);
    }
    
    function getRenewalPrice(string calldata name, uint256 yearCount) external view returns (uint256) {
        require(registry.nameToTokenId(name) != 0, "Domain not found");
        return calculatePrice(name, yearCount);
    }
    
    function isValidName(string memory name) public pure returns (bool) {
        bytes memory nameBytes = bytes(name);
        uint256 length = nameBytes.length;
        
        if (length < 3 || length > 64) return false;
        if (!isLetter(nameBytes[0])) return false;
        
        for (uint i = 0; i < length; i++) {
            if (!isValidChar(nameBytes[i])) return false;
            if (i > 0 && nameBytes[i] == '-' && nameBytes[i-1] == '-') 
                return false;
        }
        
        if (nameBytes[length-1] == '-') return false;
        
        return true;
    }
    
    function isLetter(bytes1 char) internal pure returns (bool) {
        return (char >= 0x61 && char <= 0x7A);  // a-z
    }
    
    function isNumber(bytes1 char) internal pure returns (bool) {
        return (char >= 0x30 && char <= 0x39);  // 0-9
    }
    
    function isValidChar(bytes1 char) internal pure returns (bool) {
        return isLetter(char) || isNumber(char) || char == 0x2D; // a-z, 0-9, -
    }
    
    function withdraw() external onlyOwner {
        uint256 balance = address(this).balance;
        require(balance > 0, "No balance");
        
        (bool success, ) = owner().call{value: balance}("");
        require(success, "Withdrawal failed");
        
        emit PaymentWithdrawn(owner(), balance);
    }
    
    receive() external payable {}
}

interface ISonicRegistry {
    function register(string memory name, address owner, uint256 duration) external returns (uint256);
    function extend(uint256 tokenId, uint256 duration) external;
    function available(string memory name) external view returns (bool);
    function nameToTokenId(string memory name) external view returns (uint256);
}

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

pragma solidity ^0.8.20;

import {Context} from "../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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @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 {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _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 v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

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

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 9999
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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ISonicRegistry","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"uint256","name":"yearCount","type":"uint256"}],"name":"renew","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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0000000000000000000000003d9d5acc7dbacf1662bc6d1ea8479f88b90b3cfb

-----Decoded View---------------
Arg [0] : _registry (address): 0x3D9D5ACc7dBACf1662Bc6D1ea8479F88B90b3cfb

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000003d9d5acc7dbacf1662bc6d1ea8479f88b90b3cfb