// Vulnerability label: clean
pragma solidity 0.4.24;


/**
 * @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 c) {
    if (a == 0) {
      return 0;
    }
    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 a / b;
  }

  /**
  * @dev Subtracts 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 c) {
    c = a + b;
    assert(c >= a);
    return c;
  }
}

/**
 * @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);
}

/**
 * @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);
}

/**
 * @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]);

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit 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) {
    return balances[_owner];
  }

}

/**
 * @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);
    emit 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;
    emit 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);
    emit 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);
    }
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

/**
 * @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.
   */
  constructor() 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));
    emit OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

}

contract Claimable is Ownable {
  address public pendingOwner;

  /**
   * @dev Modifier throws if called by any account other than the pendingOwner.
   */
  modifier onlyPendingOwner() {
    require(msg.sender == pendingOwner);
    _;
  }

  /**
   * @dev Allows the current owner to set the pendingOwner address.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) onlyOwner public {
    pendingOwner = newOwner;
  }

  /**
   * @dev Allows the pendingOwner address to finalize the transfer.
   */
  function claimOwnership() onlyPendingOwner public {
    emit OwnershipTransferred(owner, pendingOwner);
    owner = pendingOwner;
    pendingOwner = address(0);
  }
}

contract ClubMatesCom is StandardToken, Claimable {
  using SafeMath for uint256;
  uint8 public constant PERCENT_BONUS=15;

  ///////////////////////
  // DATA STRUCTURES  ///
  ///////////////////////
  enum StatusName {Pending, OneSign, TwoSign, Minted}

  struct MintStatus {
    StatusName status;
    address    beneficiary;
    uint256    amount;
    address    firstSign;
    address    secondSign;
  }
  
  MintStatus public additionalMint;

  string  public name;
  string  public symbol;
  uint8   public decimals;
  address public accICO;
  address public accBonusTokens;
  address public accMinterOne; 
  address public accMinterTwo;

  ///////////////
  // EVENTS    //
  ///////////////
  event BatchDistrib(uint8 cnt , uint256 batchAmount);
  event NewMintPending(address _beneficiary, uint256 mintAmount, uint64 timestamp);
  event FirstSign(address _signer, uint64 timestamp);
  event SecondSign(address _signer, uint64 timestamp);
  event Minted(address _to, uint256 _amount);

  constructor (
      address _accICO, 
      address _accBonusTokens, 
      address _accMinterOne, 
      address _accMinterTwo,
      uint256 _initialSupply)
  public 
  {
      name           = "ClubMatesCom_TEST";
      symbol         = "CMC";
      decimals       = 18;
      accICO         = _accICO;
      accBonusTokens = _accBonusTokens;
      accMinterOne   = _accMinterOne; 
      accMinterTwo   = _accMinterTwo;
      totalSupply_   = _initialSupply * (10 ** uint256(decimals));// All CIX tokens in the world
      //Initial token distribution
      balances[_accICO]         = totalSupply()/100*(100-PERCENT_BONUS);
      balances[_accBonusTokens] = totalSupply()/100*PERCENT_BONUS;
      emit Transfer(address(0), _accICO, totalSupply()/100*(100-PERCENT_BONUS));
      emit Transfer(address(0), _accBonusTokens, totalSupply()/100*PERCENT_BONUS);
      //Default values for additionalMint record
      additionalMint.status     = StatusName.Minted;
      additionalMint.amount     = totalSupply();
      additionalMint.firstSign  = address(0);
      additionalMint.secondSign = address(0);
  }

  modifier onlyTrustedSign() {
      require(msg.sender == accMinterOne || msg.sender == accMinterTwo);
      _;
  }

  modifier onlyTokenKeeper() {
      require(msg.sender == accICO || msg.sender == accBonusTokens);
      _;
  }


  function() public { } 


  //Batch token distribution from cab
  function multiTransfer(address[] _investors, uint256[] _value )  
      public 
      onlyTokenKeeper 
      returns (uint256 _batchAmount)
  {
      require(_investors.length <= 255); //audit recommendation
      require(_value.length == _investors.length);
      uint8      cnt = uint8(_investors.length);
      uint256 amount = 0;
      for (uint i=0; i<cnt; i++){
        amount = amount.add(_value[i]);
        require(_investors[i] != address(0));
        balances[_investors[i]] = balances[_investors[i]].add(_value[i]);
        emit Transfer(msg.sender, _investors[i], _value[i]);
      }
      require(amount <= balances[msg.sender]);
      balances[msg.sender] = balances[msg.sender].sub(amount);
      emit BatchDistrib(cnt, amount);
      return amount;
  }

  function requestNewMint(address _beneficiary, uint256 _amount) public onlyOwner  {
      require(_beneficiary != address(0) && _beneficiary != address(this));
      require(_amount > 0);
      require(
          additionalMint.status == StatusName.Minted  ||
          additionalMint.status == StatusName.Pending || 
          additionalMint.status == StatusName.OneSign 
      );
      additionalMint.status      = StatusName.Pending;
      additionalMint.beneficiary = _beneficiary;
      additionalMint.amount      = _amount;
      additionalMint.firstSign   = address(0);
      additionalMint.secondSign  = address(0);
      emit NewMintPending(_beneficiary,  _amount, uint64(now));
  }

  //Get  signs  from defined accounts
  function sign() public onlyTrustedSign  returns (bool) {
      require(
          additionalMint.status == StatusName.Pending || 
          additionalMint.status == StatusName.OneSign ||
          additionalMint.status == StatusName.TwoSign //non existing sit
      );

      if (additionalMint.status == StatusName.Pending) {
          additionalMint.firstSign = msg.sender;
          additionalMint.status    = StatusName.OneSign;
          emit FirstSign(msg.sender, uint64(now));
          return true;
      }

      if (additionalMint.status == StatusName.OneSign) {
        if (additionalMint.firstSign != msg.sender) {
            additionalMint.secondSign = msg.sender;
            additionalMint.status     = StatusName.TwoSign;
            emit SecondSign(msg.sender, uint64(now));
        }    
      }
        
      if (additionalMint.status == StatusName.TwoSign) {
          if (mint(additionalMint.beneficiary, additionalMint.amount)) {
              additionalMint.status = StatusName.Minted;
              emit   Minted(additionalMint.beneficiary, additionalMint.amount);
          }    
      }
      return true;
  }

  //
  function mint(address _to, uint256 _amount) internal returns (bool) {
      totalSupply_  = totalSupply_.add(_amount);
      balances[_to] = balances[_to].add(_amount);
      emit Transfer(address(0), _to, _amount);
      return true;
  }
}