RyekGoldPoolPhase1

{{
  "language": "Solidity",
  "sources": {
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// 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);
    }
}
"
    },
    "@openzeppelin/contracts/interfaces/IERC1363.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)

pragma solidity >=0.6.2;

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);
}
"
    },
    "@openzeppelin/contracts/interfaces/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)

pragma solidity >=0.4.16;

import {IERC165} from "../utils/introspection/IERC165.sol";
"
    },
    "@openzeppelin/contracts/interfaces/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)

pragma solidity >=0.4.16;

import {IERC20} from "../token/ERC20/IERC20.sol";
"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @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);
}
"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (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);
    }
}
"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// 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;
    }
}
"
    },
    "@openzeppelin/contracts/utils/introspection/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)

pragma solidity >=0.4.16;

/**
 * @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);
}
"
    },
    "@openzeppelin/contracts/utils/Pausable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (utils/Pausable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    bool private _paused;

    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    /**
     * @dev The operation failed because the contract is paused.
     */
    error EnforcedPause();

    /**
     * @dev The operation failed because the contract is not paused.
     */
    error ExpectedPause();

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        if (paused()) {
            revert EnforcedPause();
        }
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        if (!paused()) {
            revert ExpectedPause();
        }
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}
"
    },
    "@openzeppelin/contracts/utils/ReentrancyGuard.sol": {
      "content": "// 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;
    }
}
"
    },
    "contracts/RyekGoldPoolPhase1.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

/**
 * @title RyekGoldPool Phase 1 - Minimal Single-Sided Liquidity Pool
 * @dev Production-safe pool for RYEK token deposits/withdrawals only.
 *      Phase 1: Deposit RYEK → Get LP tokens, Withdraw LP tokens → Get RYEK
 *      Phase 2 (future): Add swaps, oracles, advanced features
 * 
 * Security Focus: Pausable, caps, emergency controls, one-time migration support
 */

import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@openzeppelin/contracts/utils/Pausable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

contract RyekGoldPoolPhase1 is ReentrancyGuard, Pausable, Ownable {
    using SafeERC20 for IERC20;

    // ===== STATE VARIABLES =====
    
    IERC20 public immutable RYEK;
    
    // LP Token (ERC20-compatible)
    string public constant name = "RYEK Gold Pool LP Token";
    string public constant symbol = "rGP-LP";
    uint8 public constant decimals = 18;
    
    uint256 public totalSupply;
    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;
    
    // Pool state
    uint256 public totalRyekDeposited;  // Total RYEK in pool
    uint256 private constant MIN_LIQUIDITY = 1e12; // Minimum LP to burn (prevents manipulation)
    
    // Track user RYEK deposits for proper cap enforcement
    mapping(address => uint256) public userRyekDeposited;
    
    // Security controls - Updated for 100B RYEK holder
    uint256 public maxDepositPerTx = 50e24;     // 50M RYEK per transaction
    uint256 public maxDepositPerUser = 50e27;   // 50B RYEK per user total (allows big holders)
    uint256 public maxTotalDeposits = 100e27;   // 100B RYEK pool cap
    uint256 public minDeposit = 1e18;           // 1 RYEK minimum
    
    // Migration support (one-time use only)
    bool public adminMintEnabled = true;
    mapping(address => bool) public migrated;   // Track migrated users
    
    // Emergency controls
    bool public emergencyMode = false;
    address public emergencyCoordinator;
    
    // ===== EVENTS =====
    
    event Deposit(address indexed user, uint256 ryekAmount, uint256 lpTokens, uint256 timestamp);
    event Withdraw(address indexed user, uint256 lpTokens, uint256 ryekAmount, uint256 timestamp);
    event AdminMint(address indexed user, uint256 lpTokens, uint256 timestamp);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event EmergencyPause(address indexed coordinator);
    event ParameterUpdate(string parameter, uint256 newValue);
    
    // ===== MODIFIERS =====
    
    modifier onlyEmergencyCoordinator() {
        require(msg.sender == emergencyCoordinator || msg.sender == owner(), "Not authorized");
        _;
    }
    
    modifier notInEmergencyMode() {
        require(!emergencyMode, "Emergency mode active");
        _;
    }
    
    modifier validAmount(uint256 amount) {
        require(amount > 0, "Amount must be positive");
        _;
    }
    
    // ===== CONSTRUCTOR =====
    
    constructor(
        address _ryekToken,
        address _emergencyCoordinator
    ) Ownable(msg.sender) {
        require(_ryekToken != address(0), "Invalid RYEK token");
        require(_emergencyCoordinator != address(0), "Invalid emergency coordinator");
        
        RYEK = IERC20(_ryekToken);
        emergencyCoordinator = _emergencyCoordinator;
        
        // Start with zero supply - MIN_LIQUIDITY will be burned on first deposit
        totalSupply = 0;
    }
    
    // ===== CORE FUNCTIONS =====
    
    /**
     * @dev Calculate LP tokens to mint for RYEK deposit
     * @param ryekAmount Amount of RYEK being deposited
     * @return lpTokens Amount of LP tokens to mint
     */
    function calculateLPTokensForDeposit(uint256 ryekAmount) public view returns (uint256 lpTokens) {
        if (totalRyekDeposited == 0 || totalSupply == 0) {
            // First deposit: mint LP tokens equal to RYEK minus MIN_LIQUIDITY
            require(ryekAmount > MIN_LIQUIDITY, "First deposit too small");
            return ryekAmount - MIN_LIQUIDITY;
        }
        
        // Proportional minting: lpTokens = ryekAmount * totalSupply / totalRyekDeposited
        lpTokens = (ryekAmount * totalSupply) / totalRyekDeposited;
    }
    
    /**
     * @dev Calculate RYEK amount for LP token withdrawal
     * @param lpTokens Amount of LP tokens being burned
     * @return ryekAmount Amount of RYEK to return
     */
    function calculateRyekForWithdraw(uint256 lpTokens) public view returns (uint256 ryekAmount) {
        require(totalSupply > MIN_LIQUIDITY, "No liquidity");
        
        // Proportional withdrawal: ryekAmount = lpTokens * totalRyekDeposited / totalSupply
        ryekAmount = (lpTokens * totalRyekDeposited) / totalSupply;
    }
    
    /**
     * @dev Deposit RYEK tokens to receive LP tokens
     * @param ryekAmount Amount of RYEK to deposit
     * @return lpTokens Amount of LP tokens minted
     */
    function deposit(uint256 ryekAmount) 
        external 
        nonReentrant 
        whenNotPaused 
        notInEmergencyMode 
        validAmount(ryekAmount) 
        returns (uint256 lpTokens) 
    {
        // Pre-transfer validation checks
        require(ryekAmount >= minDeposit, "Below minimum deposit");
        
        // Handle fee-on-transfer: measure actual received amount
        uint256 balanceBefore = RYEK.balanceOf(address(this));
        RYEK.safeTransferFrom(msg.sender, address(this), ryekAmount);
        uint256 balanceAfter = RYEK.balanceOf(address(this));
        uint256 actualReceived = balanceAfter - balanceBefore;
        
        require(actualReceived > 0, "No tokens received");
        
        // Post-transfer validation against actual received amounts
        require(actualReceived <= maxDepositPerTx, "Exceeds per-tx limit");
        require(userRyekDeposited[msg.sender] + actualReceived <= maxDepositPerUser, "Exceeds user limit");
        require(totalRyekDeposited + actualReceived <= maxTotalDeposits, "Exceeds pool cap");
        
        // Calculate LP tokens based on actual received amount
        lpTokens = calculateLPTokensForDeposit(actualReceived);
        require(lpTokens > 0, "No LP tokens calculated");
        
        // Handle first deposit MIN_LIQUIDITY burn
        if (totalRyekDeposited == 0 || totalSupply == 0) {
            // First deposit: burn MIN_LIQUIDITY to address(0)
            totalSupply += MIN_LIQUIDITY;
            balanceOf[address(0)] += MIN_LIQUIDITY;
            emit Transfer(address(0), address(0), MIN_LIQUIDITY);
        }
        
        // Update state with actual received amount
        totalRyekDeposited += actualReceived;
        totalSupply += lpTokens;
        balanceOf[msg.sender] += lpTokens;
        userRyekDeposited[msg.sender] += actualReceived;
        
        emit Deposit(msg.sender, actualReceived, lpTokens, block.timestamp);
        emit Transfer(address(0), msg.sender, lpTokens);
        
        return lpTokens;
    }
    
    /**
     * @dev Withdraw RYEK by burning LP tokens
     * @param lpTokens Amount of LP tokens to burn
     * @return ryekAmount Amount of RYEK returned
     */
    function withdraw(uint256 lpTokens) 
        external 
        nonReentrant 
        validAmount(lpTokens) 
        returns (uint256 ryekAmount) 
    {
        require(balanceOf[msg.sender] >= lpTokens, "Insufficient LP balance");
        
        // Calculate RYEK amount to return
        ryekAmount = calculateRyekForWithdraw(lpTokens);
        require(ryekAmount > 0, "No RYEK calculated");
        require(ryekAmount <= RYEK.balanceOf(address(this)), "Insufficient pool balance");
        
        // Calculate proportional reduction in user's tracked deposits
        uint256 userLpBalance = balanceOf[msg.sender];
        uint256 userRyekReduction = (userRyekDeposited[msg.sender] * lpTokens) / userLpBalance;
        
        // Update state
        balanceOf[msg.sender] -= lpTokens;
        totalSupply -= lpTokens;
        totalRyekDeposited -= ryekAmount;
        userRyekDeposited[msg.sender] -= userRyekReduction;
        
        // Transfer RYEK to user
        RYEK.safeTransfer(msg.sender, ryekAmount);
        
        emit Withdraw(msg.sender, lpTokens, ryekAmount, block.timestamp);
        emit Transfer(msg.sender, address(0), lpTokens);
        
        return ryekAmount;
    }
    
    // ===== LP TOKEN ERC20 FUNCTIONS =====
    
    function transfer(address to, uint256 value) public returns (bool) {
        require(to != address(0), "Cannot transfer to zero address");
        require(balanceOf[msg.sender] >= value, "Insufficient balance");
        
        balanceOf[msg.sender] -= value;
        balanceOf[to] += value;
        
        emit Transfer(msg.sender, to, value);
        return true;
    }
    
    function approve(address spender, uint256 value) public returns (bool) {
        allowance[msg.sender][spender] = value;
        emit Approval(msg.sender, spender, value);
        return true;
    }
    
    function transferFrom(address from, address to, uint256 value) public returns (bool) {
        require(to != address(0), "Cannot transfer to zero address");
        require(balanceOf[from] >= value, "Insufficient balance");
        require(allowance[from][msg.sender] >= value, "Insufficient allowance");
        
        balanceOf[from] -= value;
        balanceOf[to] += value;
        allowance[from][msg.sender] -= value;
        
        emit Transfer(from, to, value);
        return true;
    }
    
    // ===== MIGRATION FUNCTIONS =====
    
    /**
     * @dev Admin function to fund pool and mint LP tokens for migration
     * @param user User address to mint LP tokens for  
     * @param ryekAmount Amount of RYEK to fund the position with
     */
    function adminFundAndMint(address user, uint256 ryekAmount) 
        external 
        onlyOwner 
        validAmount(ryekAmount) 
    {
        require(adminMintEnabled, "Admin minting disabled");
        require(user != address(0), "Invalid user address");
        require(!migrated[user], "User already migrated");
        
        // Transfer RYEK from owner to pool to back the LP tokens
        uint256 balanceBefore = RYEK.balanceOf(address(this));
        RYEK.safeTransferFrom(msg.sender, address(this), ryekAmount);
        uint256 balanceAfter = RYEK.balanceOf(address(this));
        uint256 actualReceived = balanceAfter - balanceBefore;
        
        require(actualReceived > 0, "No tokens received");
        
        // CRITICAL: Enforce caps during migration to prevent bypass
        require(userRyekDeposited[user] + actualReceived <= maxDepositPerUser, "Migration exceeds user cap");
        require(totalRyekDeposited + actualReceived <= maxTotalDeposits, "Migration exceeds global cap");
        
        // Calculate LP tokens at current pool ratio
        uint256 lpTokens = calculateLPTokensForDeposit(actualReceived);
        require(lpTokens > 0, "No LP tokens calculated");
        
        // Handle first migration like first deposit
        if (totalRyekDeposited == 0 || totalSupply == 0) {
            totalSupply += MIN_LIQUIDITY;
            balanceOf[address(0)] += MIN_LIQUIDITY;
            emit Transfer(address(0), address(0), MIN_LIQUIDITY);
        }
        
        // Update state with proper tracking
        totalRyekDeposited += actualReceived;
        totalSupply += lpTokens;
        balanceOf[user] += lpTokens;
        userRyekDeposited[user] += actualReceived;  // CRITICAL: Track user's RYEK
        migrated[user] = true;
        
        emit AdminMint(user, lpTokens, block.timestamp);
        emit Transfer(address(0), user, lpTokens);
    }
    
    /**
     * @dev Permanently disable admin minting after migration is complete
     */
    function disableAdminMint() external onlyOwner {
        adminMintEnabled = false;
    }
    
    // ===== ADMIN FUNCTIONS =====
    
    function setMaxDepositPerTx(uint256 _maxDepositPerTx) external onlyOwner {
        maxDepositPerTx = _maxDepositPerTx;
        emit ParameterUpdate("maxDepositPerTx", _maxDepositPerTx);
    }
    
    function setMaxDepositPerUser(uint256 _maxDepositPerUser) external onlyOwner {
        maxDepositPerUser = _maxDepositPerUser;
        emit ParameterUpdate("maxDepositPerUser", _maxDepositPerUser);
    }
    
    function setMaxTotalDeposits(uint256 _maxTotalDeposits) external onlyOwner {
        maxTotalDeposits = _maxTotalDeposits;
        emit ParameterUpdate("maxTotalDeposits", _maxTotalDeposits);
    }
    
    function setMinDeposit(uint256 _minDeposit) external onlyOwner {
        minDeposit = _minDeposit;
        emit ParameterUpdate("minDeposit", _minDeposit);
    }
    
    function setEmergencyCoordinator(address _emergencyCoordinator) external onlyOwner {
        require(_emergencyCoordinator != address(0), "Invalid address");
        emergencyCoordinator = _emergencyCoordinator;
    }
    
    // ===== EMERGENCY FUNCTIONS =====
    
    function emergencyPause() external onlyEmergencyCoordinator {
        _pause();
        emergencyMode = true;
        emit EmergencyPause(msg.sender);
    }
    
    function emergencyUnpause() external onlyOwner {
        emergencyMode = false;
        _unpause();
    }
    
    // ===== VIEW FUNCTIONS =====
    
    function getPoolInfo() external view returns (
        uint256 totalRyekInPool,
        uint256 totalLpTokens,
        uint256 lpTokenPrice,
        bool isPaused,
        bool isEmergencyMode
    ) {
        totalRyekInPool = totalRyekDeposited;
        totalLpTokens = totalSupply;
        lpTokenPrice = totalSupply > MIN_LIQUIDITY ? (totalRyekDeposited * 1e18) / (totalSupply - MIN_LIQUIDITY) : 1e18;
        isPaused = paused();
        isEmergencyMode = emergencyMode;
    }
    
    function getUserPosition(address user) external view returns (
        uint256 lpBalance,
        uint256 ryekClaimable,
        uint256 shareOfPool
    ) {
        lpBalance = balanceOf[user];
        
        // Safe calculation to prevent revert on empty pool
        if (totalSupply <= MIN_LIQUIDITY || totalRyekDeposited == 0 || lpBalance == 0) {
            ryekClaimable = 0;
            shareOfPool = 0;
        } else {
            ryekClaimable = calculateRyekForWithdraw(lpBalance);
            shareOfPool = (lpBalance * 10000) / (totalSupply - MIN_LIQUIDITY);
        }
    }
    
    // ===== SAFETY =====
    
    // Prevent accidental ETH deposits
    receive() external payable {
        revert("ETH not accepted");
    }
    
    fallback() external payable {
        revert("Function not found");
    }
}"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "evmVersion": "paris",
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    }
  }
}}