pragma solidity ^0.4.18;

// File: zeppelin-solidity/contracts/ownership/Ownable.sol

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
  address public owner;


  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  function Ownable() public {
    owner = msg.sender;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }

  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) public onlyOwner {
    require(newOwner != address(0));
    OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

}

// File: zeppelin-solidity/contracts/lifecycle/Pausable.sol

/**
 * @title Pausable
 * @dev Base contract which allows children to implement an emergency stop mechanism.
 */
contract Pausable is Ownable {
  event Pause();
  event Unpause();

  bool public paused = false;


  /**
   * @dev Modifier to make a function callable only when the contract is not paused.
   */
  modifier whenNotPaused() {
    require(!paused);
    _;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is paused.
   */
  modifier whenPaused() {
    require(paused);
    _;
  }

  /**
   * @dev called by the owner to pause, triggers stopped state
   */
  function pause() onlyOwner whenNotPaused public {
    paused = true;
    Pause();
  }

  /**
   * @dev called by the owner to unpause, returns to normal state
   */
  function unpause() onlyOwner whenPaused public {
    paused = false;
    Unpause();
  }
}

// File: zeppelin-solidity/contracts/math/SafeMath.sol

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    assert(c / a == b);
    return c;
  }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  /**
  * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  /**
  * @dev Adds two numbers, throws on overflow.
  */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}

// File: zeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  function totalSupply() public view returns (uint256);
  function balanceOf(address who) public view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

// File: zeppelin-solidity/contracts/token/ERC20/BasicToken.sol

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  uint256 totalSupply_;

  /**
  * @dev total number of tokens in existence
  */
  function totalSupply() public view returns (uint256) {
    return totalSupply_;
  }

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(_value <= balances[msg.sender]);

    // SafeMath.sub will throw if there is not enough balance.
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public view returns (uint256 balance) {
    return balances[_owner];
  }

}

// File: zeppelin-solidity/contracts/token/ERC20/ERC20.sol

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public returns (bool);
  function approve(address spender, uint256 value) public returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File: zeppelin-solidity/contracts/token/ERC20/StandardToken.sol

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, BasicToken {

  mapping (address => mapping (address => uint256)) internal allowed;


  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint256 the amount of tokens to be transferred
   */
  function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
    Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   *
   * 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
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) public returns (bool) {
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @dev Function to check the amount of tokens that an owner allowed to a spender.
   * @param _owner address The address which owns the funds.
   * @param _spender address The address which will spend the funds.
   * @return A uint256 specifying the amount of tokens still available for the spender.
   */
  function allowance(address _owner, address _spender) public view returns (uint256) {
    return allowed[_owner][_spender];
  }

  /**
   * @dev Increase the amount of tokens that an owner allowed to a spender.
   *
   * approve should be called when allowed[_spender] == 0. To increment
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _addedValue The amount of tokens to increase the allowance by.
   */
  function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  /**
   * @dev Decrease the amount of tokens that an owner allowed to a spender.
   *
   * approve should be called when allowed[_spender] == 0. To decrement
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _subtractedValue The amount of tokens to decrease the allowance by.
   */
  function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

// File: contracts/CurrentToken.sol

contract CurrentToken is StandardToken, Pausable {
    string constant public name = "CurrentCoin";
    string constant public symbol = "CUR";
    uint8 constant public decimals = 18;

    uint256 constant public INITIAL_TOTAL_SUPPLY = 1e11 * (uint256(10) ** decimals);

    address private addressIco;

    modifier onlyIco() {
        require(msg.sender == addressIco);
        _;
    }

    /**
    * @dev Create CurrentToken contract and set pause
    * @param _ico The address of ICO contract.
    */
    function CurrentToken (address _ico) public {
        require(_ico != address(0));

        addressIco = _ico;

        totalSupply_ = totalSupply_.add(INITIAL_TOTAL_SUPPLY);
        balances[_ico] = balances[_ico].add(INITIAL_TOTAL_SUPPLY);
        Transfer(address(0), _ico, INITIAL_TOTAL_SUPPLY);

        pause();
    }

    /**
    * @dev Transfer token for a specified address with pause feature for owner.
    * @dev Only applies when the transfer is allowed by the owner.
    * @param _to The address to transfer to.
    * @param _value The amount to be transferred.
    */
    function transfer(address _to, uint256 _value) whenNotPaused public returns (bool) {
        super.transfer(_to, _value);
    }

    /**
    * @dev Transfer tokens from one address to another with pause feature for owner.
    * @dev Only applies when the transfer is allowed by the owner.
    * @param _from address The address which you want to send tokens from
    * @param _to address The address which you want to transfer to
    * @param _value uint256 the amount of tokens to be transferred
    */
    function transferFrom(address _from, address _to, uint256 _value) whenNotPaused public returns (bool) {
        super.transferFrom(_from, _to, _value);
    }

    /**
    * @dev Transfer tokens from ICO address to another address.
    * @param _to The address to transfer to.
    * @param _value The amount to be transferred.
    */
    function transferFromIco(address _to, uint256 _value) onlyIco public returns (bool) {
        super.transfer(_to, _value);
    }

    /**
    * @dev Burn remaining tokens from the ICO balance.
    */
    function burnFromIco() onlyIco public {
        uint256 remainingTokens = balanceOf(addressIco);

        balances[addressIco] = balances[addressIco].sub(remainingTokens);
        totalSupply_ = totalSupply_.sub(remainingTokens);
        Transfer(addressIco, address(0), remainingTokens);
    }

    /**
    * @dev Burn all tokens form balance of token holder during refund process.
    * @param _from The address of token holder whose tokens to be burned.
    */
    function burnFromAddress(address _from) onlyIco public {
        uint256 amount = balances[_from];

        balances[_from] = 0;
        totalSupply_ = totalSupply_.sub(amount);
        Transfer(_from, address(0), amount);
    }
}

// File: contracts/Whitelist.sol

/**
 * @title Whitelist contract
 * @dev Whitelist for wallets.
*/
contract Whitelist is Ownable {
    mapping(address => bool) whitelist;

    uint256 public whitelistLength = 0;

    /**
    * @dev Add wallet to whitelist.
    * @dev Accept request from the owner only.
    * @param _wallet The address of wallet to add.
    */  
    function addWallet(address _wallet) onlyOwner public {
        require(_wallet != address(0));
        require(!isWhitelisted(_wallet));
        whitelist[_wallet] = true;
        whitelistLength++;
    }

    /**
    * @dev Remove wallet from whitelist.
    * @dev Accept request from the owner only.
    * @param _wallet The address of whitelisted wallet to remove.
    */  
    function removeWallet(address _wallet) onlyOwner public {
        require(_wallet != address(0));
        require(isWhitelisted(_wallet));
        whitelist[_wallet] = false;
        whitelistLength--;
    }

    /**
    * @dev Check the specified wallet whether it is in the whitelist.
    * @param _wallet The address of wallet to check.
    */ 
    function isWhitelisted(address _wallet) constant public returns (bool) {
        return whitelist[_wallet];
    }

}

// File: contracts/Whitelistable.sol

contract Whitelistable {
    Whitelist public whitelist;

    modifier whenWhitelisted(address _wallet) {
        require(whitelist.isWhitelisted(_wallet));
        _;
    }

    /**
    * @dev Constructor for Whitelistable contract.
    */
    function Whitelistable() public {
        whitelist = new Whitelist();
    }
}

// File: contracts/CurrentCrowdsale.sol

contract CurrentCrowdsale is Pausable, Whitelistable {
    using SafeMath for uint256;

    uint256 constant private DECIMALS = 18;
    uint256 constant public RESERVED_TOKENS_FOUNDERS = 40e9 * (10 ** DECIMALS);
    uint256 constant public RESERVED_TOKENS_OPERATIONAL_EXPENSES = 10e9 * (10 ** DECIMALS);
    uint256 constant public HARDCAP_TOKENS_PRE_ICO = 100e6 * (10 ** DECIMALS);
    uint256 constant public HARDCAP_TOKENS_ICO = 499e8 * (10 ** DECIMALS);

    uint256 public startTimePreIco = 0;
    uint256 public endTimePreIco = 0;

    uint256 public startTimeIco = 0;
    uint256 public endTimeIco = 0;

    uint256 public exchangeRatePreIco = 0;

    bool public isTokenRateCalculated = false;

    uint256 public exchangeRateIco = 0;

    uint256 public mincap = 0;
    uint256 public maxcap = 0;

    mapping(address => uint256) private investments;    

    uint256 public tokensSoldIco = 0;
    uint256 public tokensRemainingIco = HARDCAP_TOKENS_ICO;
    uint256 public tokensSoldTotal = 0;

    uint256 public weiRaisedPreIco = 0;
    uint256 public weiRaisedIco = 0;
    uint256 public weiRaisedTotal = 0;

    mapping(address => uint256) private investmentsPreIco;
    address[] private investorsPreIco;

    address private withdrawalWallet;

    bool public isTokensPreIcoDistributed = false;
    uint256 public distributionPreIcoCount = 0;

    CurrentToken public token = new CurrentToken(this);

    modifier beforeReachingHardCap() {
        require(tokensRemainingIco > 0 && weiRaisedTotal < maxcap);
        _;
    }

    modifier whenPreIcoSaleHasEnded() {
        require(now > endTimePreIco);
        _;
    }

    modifier whenIcoSaleHasEnded() {
        require(endTimeIco > 0 && now > endTimeIco);
        _;
    }

    /**
    * @dev Constructor for CurrentCrowdsale contract.
    * @dev Set the owner who can manage whitelist and token.
    * @param _mincap The mincap value.
    * @param _startTimePreIco The pre-ICO start time.
    * @param _endTimePreIco The pre-ICO end time.
    * @param _foundersWallet The address to which reserved tokens for founders will be transferred.
    * @param _operationalExpensesWallet The address to which reserved tokens for operational expenses will be transferred.
    * @param _withdrawalWallet The address to which raised funds will be withdrawn.
    */
    function CurrentCrowdsale(
        uint256 _mincap,
        uint256 _maxcap,
        uint256 _startTimePreIco,
        uint256 _endTimePreIco,
        address _foundersWallet,
        address _operationalExpensesWallet,
        address _withdrawalWallet
    ) Whitelistable() public
    {
        require(_foundersWallet != address(0) && _operationalExpensesWallet != address(0) && _withdrawalWallet != address(0));
        require(_startTimePreIco >= now && _endTimePreIco > _startTimePreIco);
        require(_mincap > 0 && _maxcap > _mincap);

        startTimePreIco = _startTimePreIco;
        endTimePreIco = _endTimePreIco;

        withdrawalWallet = _withdrawalWallet;

        mincap = _mincap;
        maxcap = _maxcap;

        whitelist.transferOwnership(msg.sender);

        token.transferFromIco(_foundersWallet, RESERVED_TOKENS_FOUNDERS);
        token.transferFromIco(_operationalExpensesWallet, RESERVED_TOKENS_OPERATIONAL_EXPENSES);
        token.transferOwnership(msg.sender);
    }

    /**
    * @dev Fallback function can be used to buy tokens.
    */
    function() public payable {
        if (isPreIco()) {
            sellTokensPreIco();
        } else if (isIco()) {
            sellTokensIco();
        } else {
            revert();
        }
    }

    /**
    * @dev Check whether the pre-ICO is active at the moment.
    */
    function isPreIco() public constant returns (bool) {
        bool withinPreIco = now >= startTimePreIco && now <= endTimePreIco;
        return withinPreIco;
    }

    /**
    * @dev Check whether the ICO is active at the moment.
    */
    function isIco() public constant returns (bool) {
        bool withinIco = now >= startTimeIco && now <= endTimeIco;
        return withinIco;
    }

    /**
    * @dev Manual refund if mincap has not been reached.
    * @dev Only applies when the ICO was ended. 
    */
    function manualRefund() whenIcoSaleHasEnded public {
        require(weiRaisedTotal < mincap);

        uint256 weiAmountTotal = investments[msg.sender];
        require(weiAmountTotal > 0);

        investments[msg.sender] = 0;

        uint256 weiAmountPreIco = investmentsPreIco[msg.sender];
        uint256 weiAmountIco = weiAmountTotal;

        if (weiAmountPreIco > 0) {
            investmentsPreIco[msg.sender] = 0;
            weiRaisedPreIco = weiRaisedPreIco.sub(weiAmountPreIco);
            weiAmountIco = weiAmountIco.sub(weiAmountPreIco);
        }

        if (weiAmountIco > 0) {
            weiRaisedIco = weiRaisedIco.sub(weiAmountIco);
            uint256 tokensIco = weiAmountIco.mul(exchangeRateIco);
            tokensSoldIco = tokensSoldIco.sub(tokensIco);
        }

        weiRaisedTotal = weiRaisedTotal.sub(weiAmountTotal);

        uint256 tokensAmount = token.balanceOf(msg.sender);

        tokensSoldTotal = tokensSoldTotal.sub(tokensAmount);

        token.burnFromAddress(msg.sender);

        msg.sender.transfer(weiAmountTotal);
    }

    /**
    * @dev Sell tokens during pre-ICO.
    * @dev Sell tokens only for whitelisted wallets.
    */
    function sellTokensPreIco() beforeReachingHardCap whenWhitelisted(msg.sender) whenNotPaused public payable {
        require(isPreIco());
        require(msg.value > 0);

        uint256 weiAmount = msg.value;
        uint256 excessiveFunds = 0;

        uint256 plannedWeiTotal = weiRaisedTotal.add(weiAmount);

        if (plannedWeiTotal > maxcap) {
            excessiveFunds = plannedWeiTotal.sub(maxcap);
            weiAmount = maxcap.sub(weiRaisedTotal);
        }

        investments[msg.sender] = investments[msg.sender].add(weiAmount);

        weiRaisedPreIco = weiRaisedPreIco.add(weiAmount);
        weiRaisedTotal = weiRaisedTotal.add(weiAmount);

        addInvestmentPreIco(msg.sender, weiAmount);

        if (excessiveFunds > 0) {
            msg.sender.transfer(excessiveFunds);
        }
    }

    /**
    * @dev Sell tokens during ICO.
    * @dev Sell tokens only for whitelisted wallets.
    */
    function sellTokensIco() beforeReachingHardCap whenWhitelisted(msg.sender) whenNotPaused public payable {
        require(isIco());
        require(msg.value > 0);

        uint256 weiAmount = msg.value;
        uint256 excessiveFunds = 0;

        uint256 plannedWeiTotal = weiRaisedTotal.add(weiAmount);

        if (plannedWeiTotal > maxcap) {
            excessiveFunds = plannedWeiTotal.sub(maxcap);
            weiAmount = maxcap.sub(weiRaisedTotal);
        }

        uint256 tokensAmount = weiAmount.mul(exchangeRateIco);

        if (tokensAmount > tokensRemainingIco) {
            uint256 weiToAccept = tokensRemainingIco.div(exchangeRateIco);
            excessiveFunds = excessiveFunds.add(weiAmount.sub(weiToAccept));
            
            tokensAmount = tokensRemainingIco;
            weiAmount = weiToAccept;
        }

        investments[msg.sender] = investments[msg.sender].add(weiAmount);

        tokensSoldIco = tokensSoldIco.add(tokensAmount);
        tokensSoldTotal = tokensSoldTotal.add(tokensAmount);
        tokensRemainingIco = tokensRemainingIco.sub(tokensAmount);

        weiRaisedIco = weiRaisedIco.add(weiAmount);
        weiRaisedTotal = weiRaisedTotal.add(weiAmount);

        token.transferFromIco(msg.sender, tokensAmount);

        if (excessiveFunds > 0) {
            msg.sender.transfer(excessiveFunds);
        }
    }

    /**
    * @dev Send raised funds to the withdrawal wallet.
    */
    function forwardFunds() onlyOwner public {
        require(weiRaisedTotal >= mincap);
        withdrawalWallet.transfer(this.balance);
    }

    /**
    * @dev Calculate token exchange rate for pre-ICO and ICO.
    * @dev Only applies when the pre-ICO was ended.
    * @dev May be called only once.
    */
    function calcTokenRate() whenPreIcoSaleHasEnded onlyOwner public {
        require(!isTokenRateCalculated);
        require(weiRaisedPreIco > 0);

        exchangeRatePreIco = HARDCAP_TOKENS_PRE_ICO.div(weiRaisedPreIco);

        exchangeRateIco = exchangeRatePreIco.div(2);

        isTokenRateCalculated = true;
    }

    /**
    * @dev Distribute tokens to pre-ICO investors using pagination.
    * @dev Pagination proceeds the set value (paginationCount) of tokens distributions per one function call.
    * @param _paginationCount The value that used for pagination.
    */
    function distributeTokensPreIco(uint256 _paginationCount) onlyOwner public {
        require(isTokenRateCalculated && !isTokensPreIcoDistributed);
        require(_paginationCount > 0);

        uint256 count = 0;
        for (uint256 i = distributionPreIcoCount; i < getPreIcoInvestorsCount(); i++) {
            if (count == _paginationCount) {
                break;
            }
            uint256 investment = getPreIcoInvestment(getPreIcoInvestor(i));
            uint256 tokensAmount = investment.mul(exchangeRatePreIco);
            
            tokensSoldTotal = tokensSoldTotal.add(tokensAmount);

            token.transferFromIco(getPreIcoInvestor(i), tokensAmount);

            count++;
        }

        distributionPreIcoCount = distributionPreIcoCount.add(count);

        if (distributionPreIcoCount == getPreIcoInvestorsCount()) {
            isTokensPreIcoDistributed = true;
        }
    }

    /**
    * @dev Burn unsold tokens from the ICO balance.
    * @dev Only applies when the ICO was ended.
    */
    function burnUnsoldTokens() whenIcoSaleHasEnded onlyOwner public {
        require(tokensRemainingIco > 0);
        token.burnFromIco();
        tokensRemainingIco = 0;
    }

    /**
    * @dev Count the pre-ICO investors total.
    */
    function getPreIcoInvestorsCount() constant public returns (uint256) {
        return investorsPreIco.length;
    }

    /**
    * @dev Get the pre-ICO investor address.
    * @param _index the index of investor in the array. 
    */
    function getPreIcoInvestor(uint256 _index) constant public returns (address) {
        return investorsPreIco[_index];
    }

    /**
    * @dev Gets the amount of tokens for pre-ICO investor.
    * @param _investorPreIco the pre-ICO investor address.
    */
    function getPreIcoInvestment(address _investorPreIco) constant public returns (uint256) {
        return investmentsPreIco[_investorPreIco];
    }

    /**
    * @dev Set start time and end time for ICO.
    * @dev Only applies when tokens distributions to pre-ICO investors were processed.
    * @param _startTimeIco The ICO start time.
    * @param _endTimeIco The ICO end time.
    */
    function setStartTimeIco(uint256 _startTimeIco, uint256 _endTimeIco) whenPreIcoSaleHasEnded beforeReachingHardCap onlyOwner public {
        require(_startTimeIco >= now && _endTimeIco > _startTimeIco);
        require(isTokenRateCalculated);

        startTimeIco = _startTimeIco;
        endTimeIco = _endTimeIco;
    }

    /**
    * @dev Add new investment to the pre-ICO investments storage.
    * @param _from The address of a pre-ICO investor.
    * @param _value The investment received from a pre-ICO investor.
    */
    function addInvestmentPreIco(address _from, uint256 _value) internal {
        if (investmentsPreIco[_from] == 0) {
            investorsPreIco.push(_from);
        }
        investmentsPreIco[_from] = investmentsPreIco[_from].add(_value);
    }  
}