//
//  _   _ ______ ______ _  __    __ _   
// | \ | |  ____|  ____| |/ /   / _(_)                           
// |  \| | |__  | |__  | ' /   | |_ _ _ __   __ _ _ __   ___ ___ 
// | . ` |  __| |  __| |  <    |  _| | '_ \ / _` | '_ \ / __/ _ \
// | |\  | |____| |____| . \  _| | | | | | | (_| | | | | (_|  __/
// |_| \_|______|______|_|\_\(_)_| |_|_| |_|\__,_|_| |_|\___\___|
//                                
//
// Site:     https://neek.finance/
// Telegram: https://t.me/neekfinance/    < Join Us
// Twitter:  https://twitter.com/NeekFinance/    < Follow Us
//
//

pragma solidity 0.5.17;
contract ReentrancyGuard {
    bool private _notEntered;
    constructor () internal {
        _notEntered = true;
    }
    modifier nonReentrant() {
        require(_notEntered, "ReentrancyGuard: reentrant call");
        _notEntered = false;
        _;
        _notEntered = true;
    }
}
library Address {
    function isContract(address account) internal view returns (bool) {
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }
    function toPayable(address account) internal pure returns (address payable) {
        return address(uint160(account));
    }
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");
        (bool success, ) = recipient.call.value(amount)("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
}
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }
    function callOptionalReturn(IERC20 token, bytes memory data) private {
        require(address(token).isContract(), "SafeERC20: call to non-contract");
        (bool success, bytes memory returndata) = address(token).call(data);
        require(success, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}
library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}
interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract Context {
    constructor () internal { }
    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }
    function _msgData() internal view returns (bytes memory) {
        this;
        return msg.data;
    }
}
contract Crowdsale is Context, ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;
    IERC20 private _token;
    address payable private _wallet;
    uint256 private _rate;
    uint256 private _weiRaised;
    event TokensPurchased(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
    constructor (uint256 rate, address payable wallet, IERC20 token) public {
        require(rate > 0, "Crowdsale: rate is 0");
        require(wallet != address(0), "Crowdsale: wallet is the zero address");
        require(address(token) != address(0), "Crowdsale: token is the zero address");
        _rate = rate;
        _wallet = wallet;
        _token = token;
    }
    function () external payable {
        buyTokens(_msgSender());
    }
    function token() public view returns (IERC20) {
        return _token;
    }
    function wallet() public view returns (address payable) {
        return _wallet;
    }
    function rate() public view returns (uint256) {
        return _rate;
    }
    function weiRaised() public view returns (uint256) {
        return _weiRaised;
    }
    function buyTokens(address beneficiary) public nonReentrant payable {
        uint256 weiAmount = msg.value;
        _preValidatePurchase(beneficiary, weiAmount);
        uint256 tokens = _getTokenAmount(weiAmount);
        _weiRaised = _weiRaised.add(weiAmount);
        _processPurchase(beneficiary, tokens);
        emit TokensPurchased(_msgSender(), beneficiary, weiAmount, tokens);
        _updatePurchasingState(beneficiary, weiAmount);
        _forwardFunds();
        _postValidatePurchase(beneficiary, weiAmount);
    }
    function _preValidatePurchase(address beneficiary, uint256 weiAmount) internal view {
        require(beneficiary != address(0), "Crowdsale: beneficiary is the zero address");
        require(weiAmount != 0, "Crowdsale: weiAmount is 0");
        this;
    }
    function _postValidatePurchase(address beneficiary, uint256 weiAmount) internal view {
    }
    function _deliverTokens(address beneficiary, uint256 tokenAmount) internal {
        _token.safeTransfer(beneficiary, tokenAmount);
    }
    function _processPurchase(address beneficiary, uint256 tokenAmount) internal {
        _deliverTokens(beneficiary, tokenAmount);
    }
    function _updatePurchasingState(address beneficiary, uint256 weiAmount) internal {
    }
    function _getTokenAmount(uint256 weiAmount) internal view returns (uint256) {
        return weiAmount.mul(_rate);
    }
    function _forwardFunds() internal {
        _wallet.transfer(msg.value);
    }
}
contract NeekPresale1 is Crowdsale {
    constructor (
        uint256 rate,
        address payable wallet,
        IERC20 token
    )
        public
        Crowdsale(rate, wallet, token)
        // Rate set 0.000100 ETH Per NEEK
        //          10,000 NEEK Per ETH
    {
    }
}