HybridPresaleModule

// File: @openzeppelin/contracts/utils/Context.sol


// 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;
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;


/**
 * @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);
    }
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


// 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);
}

// File: @openzeppelin/contracts/interfaces/IERC20.sol


// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)

pragma solidity >=0.4.16;


// File: @openzeppelin/contracts/utils/introspection/IERC165.sol


// 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);
}

// File: @openzeppelin/contracts/interfaces/IERC165.sol


// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)

pragma solidity >=0.4.16;


// File: @openzeppelin/contracts/interfaces/IERC1363.sol


// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)

pragma solidity >=0.6.2;



/**
 * @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);
}

// File: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol


// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;



/**
 * @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);
    }
}

// File: @openzeppelin/contracts/security/ReentrancyGuard.sol


// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @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 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;

    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
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // 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;
    }
}

// File: @openzeppelin/contracts/security/Pausable.sol


// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;


/**
 * @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 {
    /**
     * @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);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @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 {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @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());
    }
}

// File: HybridPresaleModule.sol


pragma solidity ^0.8.20;






/**
 * @title HybridPresaleModule - ENHANCED with Full On-Chain Transparency
 * @dev Complete tracking of:
 * - Total tokens sold (auto-updates)
 * - Total tokens remaining (auto-updates)
 * - Total raised in USD (combined, auto-updates)
 * - Total raised PER payment token (USDC, USDT, WBTC, etc. - SEPARATELY)
 * - List of all payment tokens used
 * - Individual user contributions
 * - Comprehensive statistics readable on mainnet
 */

// ===== INTERFACES =====

interface IPepeManticToken {
    function transfer(address to, uint256 amount) external returns (bool);
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
    function balanceOf(address account) external view returns (uint256);
    function tradingEnabled() external view returns (bool);
    function approve(address spender, uint256 amount) external returns (bool);
}

interface IMultiCurrencyHandler {
    function getTokenUsdValue(address token, uint256 amount) external view returns (uint256);
    function isTokenSupported(address token) external view returns (bool);
}

interface IClaimAndStakeRouter {
    function claimAndStakeFor(address user, uint256 amount, uint256 tierLevel, uint256 poolId) external;
}

// ===== MAIN CONTRACT =====

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

    // ===== STATE VARIABLES =====

    IPepeManticToken public token;
    IMultiCurrencyHandler public paymentHandler;
    IClaimAndStakeRouter public claimRouter;
    
    address public vaultWallet;
    uint256 public ratePerUSD;
    bool public presaleActive;
    
    // ===== USER TRACKING =====
    mapping(address => uint256) public contributions;          // User USD contributions
    mapping(address => uint256) public tokensPurchased;        // User tokens bought
    
    // ===== GLOBAL STATISTICS =====
    uint256 public totalRaisedUSD;                             // Total USD raised (combined)
    uint256 public totalTokensSold;                            // Total tokens sold
    
    // ===== PER-TOKEN TRACKING (THIS IS NEW!) =====
    mapping(address => uint256) public totalRaisedPerToken;    // Amount raised per payment token
    address[] public paymentTokensUsed;                        // List of all tokens used
    mapping(address => bool) private _tokenUsed;               // Helper to track if token added to list
    
    // ===== TRANSFER WHITELIST =====
    mapping(address => bool) public transferWhitelist;

    // ===== EVENTS =====
    event PresaleStarted();
    event PresalePaused();
    event TokensPurchased(
        address indexed buyer, 
        address indexed paymentToken, 
        uint256 paymentAmount, 
        uint256 usdValue, 
        uint256 tokensReceived,
        uint256 newTotalRaisedUSD,
        uint256 newTotalTokensSold
    );
    event TokensStaked(address indexed buyer, uint256 amount, uint256 tierLevel, uint256 poolId);
    event RateUpdated(uint256 newRate);
    event VaultWalletUpdated(address newVault);
    event TokenUpdated(address newToken);
    event PaymentHandlerUpdated(address newHandler);
    event ClaimRouterUpdated(address newRouter);
    event TransferWhitelistUpdated(address indexed account, bool whitelisted);
    event EmergencyWithdrawal(address indexed token, uint256 amount);

    // ===== CONSTRUCTOR =====

    constructor(
        address initialOwner,
        address _token,
        address _vaultWallet,
        address _paymentHandler,
        uint256 _initialRate
    ) Ownable(initialOwner) {
        require(_token != address(0), "Invalid token");
        require(_vaultWallet != address(0), "Invalid vault");
        require(_paymentHandler != address(0), "Invalid handler");
        require(_initialRate > 0, "Invalid rate");

        token = IPepeManticToken(_token);
        vaultWallet = _vaultWallet;
        paymentHandler = IMultiCurrencyHandler(_paymentHandler);
        ratePerUSD = _initialRate;

        transferWhitelist[address(this)] = true;
        
        emit TokenUpdated(_token);
        emit VaultWalletUpdated(_vaultWallet);
        emit PaymentHandlerUpdated(_paymentHandler);
        emit RateUpdated(_initialRate);
    }

    // ===== MODIFIERS =====

    modifier whenPresaleActive() {
        require(presaleActive, "Presale not active");
        _;
    }

    // ===== CORE PRESALE FUNCTIONS =====

    /**
     * @dev Purchase MANTIC tokens with any supported ERC20 token
     * @param paymentToken Address of the token to pay with (USDC, USDT, WBTC, etc.)
     * @param paymentAmount Amount of payment tokens to spend
     */
    function buyTokens(address paymentToken, uint256 paymentAmount) 
        external 
        nonReentrant 
        whenNotPaused 
        whenPresaleActive 
    {
        require(paymentAmount > 0, "Zero amount");
        require(paymentHandler.isTokenSupported(paymentToken), "Token not supported");

        // Get USD value of payment
        uint256 usdValue = paymentHandler.getTokenUsdValue(paymentToken, paymentAmount);
        require(usdValue > 0, "Zero USD value");

        // Calculate MANTIC tokens to deliver
        uint256 tokensToDeliver = (usdValue * ratePerUSD) / 1e18;
        require(tokensToDeliver > 0, "Zero tokens");

        // Check contract has enough tokens
        require(token.balanceOf(address(this)) >= tokensToDeliver, "Insufficient tokens");

        // Transfer payment tokens from user to vault
        IERC20(paymentToken).safeTransferFrom(msg.sender, vaultWallet, paymentAmount);

        // ===== UPDATE ALL TRACKING (AUTO-UPDATING) =====
        
        // Update per-user tracking
        contributions[msg.sender] += usdValue;
        tokensPurchased[msg.sender] += tokensToDeliver;
        
        // Update global USD and token totals
        totalRaisedUSD += usdValue;
        totalTokensSold += tokensToDeliver;
        
        // Update per-token tracking
        totalRaisedPerToken[paymentToken] += paymentAmount;
        
        // Add to payment tokens list if first time seeing this token
        if (!_tokenUsed[paymentToken]) {
            paymentTokensUsed.push(paymentToken);
            _tokenUsed[paymentToken] = true;
        }

        // Transfer MANTIC tokens to user IMMEDIATELY
        require(token.transfer(msg.sender, tokensToDeliver), "Token transfer failed");

        emit TokensPurchased(
            msg.sender, 
            paymentToken, 
            paymentAmount, 
            usdValue, 
            tokensToDeliver,
            totalRaisedUSD,      // Current total USD
            totalTokensSold      // Current total tokens sold
        );
    }

    /**
     * @dev Purchase MANTIC tokens and immediately stake them
     */
    function buyAndStake(
        address paymentToken,
        uint256 paymentAmount,
        uint256 tierLevel,
        uint256 poolId
    ) 
        external 
        nonReentrant 
        whenNotPaused 
        whenPresaleActive 
    {
        require(address(claimRouter) != address(0), "Staking not enabled");
        require(paymentAmount > 0, "Zero amount");
        require(paymentHandler.isTokenSupported(paymentToken), "Token not supported");

        // Get USD value of payment
        uint256 usdValue = paymentHandler.getTokenUsdValue(paymentToken, paymentAmount);
        require(usdValue > 0, "Zero USD value");

        // Calculate MANTIC tokens
        uint256 tokensToDeliver = (usdValue * ratePerUSD) / 1e18;
        require(tokensToDeliver > 0, "Zero tokens");

        // Check contract has enough tokens
        require(token.balanceOf(address(this)) >= tokensToDeliver, "Insufficient tokens");

        // Transfer payment tokens from user to vault
        IERC20(paymentToken).safeTransferFrom(msg.sender, vaultWallet, paymentAmount);

        // ===== UPDATE ALL TRACKING (AUTO-UPDATING) =====
        
        contributions[msg.sender] += usdValue;
        tokensPurchased[msg.sender] += tokensToDeliver;
        totalRaisedUSD += usdValue;
        totalTokensSold += tokensToDeliver;
        totalRaisedPerToken[paymentToken] += paymentAmount;
        
        if (!_tokenUsed[paymentToken]) {
            paymentTokensUsed.push(paymentToken);
            _tokenUsed[paymentToken] = true;
        }

        // Approve staking router to spend tokens
        require(token.approve(address(claimRouter), tokensToDeliver), "Approval failed");

        // Send tokens to staking router for user
        claimRouter.claimAndStakeFor(msg.sender, tokensToDeliver, tierLevel, poolId);

        emit TokensPurchased(
            msg.sender, 
            paymentToken, 
            paymentAmount, 
            usdValue, 
            tokensToDeliver,
            totalRaisedUSD,
            totalTokensSold
        );
        emit TokensStaked(msg.sender, tokensToDeliver, tierLevel, poolId);
    }

    // ===== ADMIN FUNCTIONS =====

    function startPresale() external onlyOwner {
        require(!presaleActive, "Already active");
        presaleActive = true;
        emit PresaleStarted();
    }

    function pausePresale() external onlyOwner {
        require(presaleActive, "Not active");
        presaleActive = false;
        emit PresalePaused();
    }

    function pause() external onlyOwner {
        _pause();
    }

    function unpause() external onlyOwner {
        _unpause();
    }

    function setRatePerUSD(uint256 newRate) external onlyOwner {
        require(newRate > 0, "Invalid rate");
        ratePerUSD = newRate;
        emit RateUpdated(newRate);
    }

    function setVaultWallet(address newVault) external onlyOwner {
        require(newVault != address(0), "Invalid address");
        vaultWallet = newVault;
        emit VaultWalletUpdated(newVault);
    }

    function setToken(address newToken) external onlyOwner {
        require(newToken != address(0), "Invalid token");
        token = IPepeManticToken(newToken);
        emit TokenUpdated(newToken);
    }

    function setPaymentHandler(address handler) external onlyOwner {
        require(handler != address(0), "Invalid address");
        paymentHandler = IMultiCurrencyHandler(handler);
        emit PaymentHandlerUpdated(handler);
    }

    function setClaimRouter(address router) external onlyOwner {
        require(router != address(0), "Invalid router");
        claimRouter = IClaimAndStakeRouter(router);
        transferWhitelist[router] = true;
        emit ClaimRouterUpdated(router);
        emit TransferWhitelistUpdated(router, true);
    }

    function setTransferWhitelist(address account, bool whitelisted) external onlyOwner {
        require(account != address(0), "Invalid address");
        transferWhitelist[account] = whitelisted;
        emit TransferWhitelistUpdated(account, whitelisted);
    }

    function withdrawTokens(address to, uint256 amount) external onlyOwner {
        require(to != address(0), "Invalid address");
        require(token.balanceOf(address(this)) >= amount, "Insufficient balance");
        require(token.transfer(to, amount), "Transfer failed");
        emit EmergencyWithdrawal(address(token), amount);
    }

    function emergencyWithdrawToken(address tokenAddress, address to, uint256 amount) 
        external 
        onlyOwner 
    {
        require(to != address(0), "Invalid address");
        require(tokenAddress != address(token), "Cannot withdraw presale token");
        IERC20(tokenAddress).safeTransfer(to, amount);
        emit EmergencyWithdrawal(tokenAddress, amount);
    }

    function emergencyWithdrawETH(address payable to) external onlyOwner {
        require(to != address(0), "Invalid address");
        uint256 balance = address(this).balance;
        require(balance > 0, "No ETH");
        (bool success, ) = to.call{value: balance}("");
        require(success, "ETH transfer failed");
        emit EmergencyWithdrawal(address(0), balance);
    }

    // ===== VIEW FUNCTIONS (READABLE ON MAINNET) =====

    /**
     * @dev Get total tokens remaining in presale (AUTO-UPDATES)
     */
    function getTotalTokensRemaining() external view returns (uint256) {
        return token.balanceOf(address(this));
    }

    /**
     * @dev Get total tokens sold (AUTO-UPDATES)
     */
    function getTotalTokensSold() external view returns (uint256) {
        return totalTokensSold;
    }

    /**
     * @dev Get total USD raised (combined, AUTO-UPDATES)
     */
    function getTotalRaisedUSD() external view returns (uint256) {
        return totalRaisedUSD;
    }

    /**
     * @dev Get amount raised for a specific payment token
     * Example: getTotalRaisedForToken(USDC_ADDRESS) returns total USDC raised
     */
    function getTotalRaisedForToken(address paymentToken) external view returns (uint256) {
        return totalRaisedPerToken[paymentToken];
    }

    /**
     * @dev Get list of all payment tokens used
     * Returns array of token addresses that have been used to buy
     */
    function getAllPaymentTokens() external view returns (address[] memory) {
        return paymentTokensUsed;
    }

    /**
     * @dev Get count of how many different payment tokens used
     */
    function getPaymentTokenCount() external view returns (uint256) {
        return paymentTokensUsed.length;
    }

    /**
     * @dev Get comprehensive breakdown of all payment tokens
     * Returns parallel arrays: tokens[] and amounts[]
     * 
     * EXAMPLE OUTPUT:
     * tokens[0] = USDC address, amounts[0] = 50000000000 (50k USDC with 6 decimals)
     * tokens[1] = USDT address, amounts[1] = 30000000000 (30k USDT with 6 decimals)
     * tokens[2] = DAI address,  amounts[2] = 10000000000000000000000 (10k DAI with 18 decimals)
     */
    function getAllTokenContributions() 
        external 
        view 
        returns (address[] memory tokens, uint256[] memory amounts) 
    {
        uint256 length = paymentTokensUsed.length;
        tokens = new address[](length);
        amounts = new uint256[](length);
        
        for (uint256 i = 0; i < length; i++) {
            tokens[i] = paymentTokensUsed[i];
            amounts[i] = totalRaisedPerToken[paymentTokensUsed[i]];
        }
    }

    /**
     * @dev Get user's total contribution in USD
     */
    function getUserContribution(address user) external view returns (uint256) {
        return contributions[user];
    }

    /**
     * @dev Get user's total tokens purchased
     */
    function getUserTokensPurchased(address user) external view returns (uint256) {
        return tokensPurchased[user];
    }

    /**
     * @dev Check if user can transfer tokens
     */
    function canTransfer(address user) external view returns (bool) {
        return token.tradingEnabled() || transferWhitelist[user];
    }

    /**
     * @dev Get current token price in USD
     */
    function getTokenPriceUSD() external view returns (uint256) {
        return 1e36 / ratePerUSD;
    }

    /**
     * @dev Calculate tokens for payment amount (PREVIEW)
     */
    function calculateTokensForPayment(address paymentToken, uint256 paymentAmount) 
        external 
        view 
        returns (uint256 tokensToReceive, uint256 usdValue) 
    {
        if (!paymentHandler.isTokenSupported(paymentToken) || paymentAmount == 0) {
            return (0, 0);
        }
        
        usdValue = paymentHandler.getTokenUsdValue(paymentToken, paymentAmount);
        tokensToReceive = (usdValue * ratePerUSD) / 1e18;
    }

    /**
     * @dev Get comprehensive presale statistics (ALL IN ONE CALL)
     * Returns everything needed for frontend dashboard
     */
    function getPresaleStats() 
        external 
        view 
        returns (
            bool active,
            uint256 totalRaised,
            uint256 tokensSold,
            uint256 tokensRemaining,
            uint256 rate,
            uint256 tokenCount,
            uint256 priceUSD
        ) 
    {
        active = presaleActive;
        totalRaised = totalRaisedUSD;
        tokensSold = totalTokensSold;
        tokensRemaining = token.balanceOf(address(this));
        rate = ratePerUSD;
        tokenCount = paymentTokensUsed.length;
        priceUSD = 1e36 / ratePerUSD;
    }

    /**
     * @dev Get COMPLETE presale breakdown with per-token details
     * This is the MASTER function that returns EVERYTHING
     * 
     * ✅ FIXED: Renamed return variables to avoid shadowing state variables
     */
    function getCompletePresaleBreakdown() 
        external 
        view 
        returns (
            bool isActive,
            uint256 totalRaised,
            uint256 tokensSold,
            uint256 tokensRemaining,
            uint256 currentRate,
            address[] memory paymentTokens,
            uint256[] memory amountsPerToken
        ) 
    {
        isActive = presaleActive;
        totalRaised = totalRaisedUSD;
        tokensSold = totalTokensSold;
        tokensRemaining = token.balanceOf(address(this));
        currentRate = ratePerUSD;
        
        uint256 length = paymentTokensUsed.length;
        paymentTokens = new address[](length);
        amountsPerToken = new uint256[](length);
        
        for (uint256 i = 0; i < length; i++) {
            paymentTokens[i] = paymentTokensUsed[i];
            amountsPerToken[i] = totalRaisedPerToken[paymentTokensUsed[i]];
        }
    }

    // ===== RECEIVE FUNCTION =====

    receive() external payable {
        revert("Use buyTokens() with supported tokens");
    }
}