pragma solidity ^0.4.16;

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  uint256 public totalSupply;
  function balanceOf(address who) constant returns (uint256);
  function transfer(address to, uint256 value) 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) constant returns (uint256);
  function transferFrom(address from, address to, uint256 value) returns (bool);
  function approve(address spender, uint256 value) returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
    
  function mul(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal constant 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;
  }

  function sub(uint256 a, uint256 b) internal constant returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
  
}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances. 
 */
contract BasicToken is ERC20Basic {
    
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  /**
  * @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) returns (bool) {
    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) constant returns (uint256 balance) {
    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)) 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 amout of tokens to be transfered
   */
  function transferFrom(address _from, address _to, uint256 _value) returns (bool) {
    var _allowance = allowed[_from][msg.sender];

    // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
    // require (_value <= _allowance);

    balances[_to] = balances[_to].add(_value);
    balances[_from] = balances[_from].sub(_value);
    allowed[_from][msg.sender] = _allowance.sub(_value);
    Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Aprove the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) returns (bool) {

    // To change the approve amount you first have to reduce the addresses`
    //  allowance to zero by calling `approve(_spender, 0)` if it is not
    //  already 0 to mitigate the race condition described here:
    //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    require((_value == 0) || (allowed[msg.sender][_spender] == 0));

    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 specifing the amount of tokens still available for the spender.
   */
  function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
    return allowed[_owner][_spender];
  }

}

/**
 * @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;

  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  function Ownable() {
    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) onlyOwner {
    require(newOwner != address(0));      
    owner = newOwner;
  }

}

/**
 * @title Burnable Token
 * @dev Token that can be irreversibly burned (destroyed).
 */
contract BurnableToken is StandardToken {

  /**
   * @dev Burns a specific amount of tokens.
   * @param _value The amount of token to be burned.
   */
  function burn(uint _value) public {
    require(_value > 0);
    address burner = msg.sender;
    balances[burner] = balances[burner].sub(_value);
    totalSupply = totalSupply.sub(_value);
    Burn(burner, _value);
  }

  event Burn(address indexed burner, uint indexed value);

}

contract Misscoin is BurnableToken {
    
  string public constant name = "Misscoin";
   
  string public constant symbol = "MISC";
    
  uint32 public constant decimals = 18;

  uint256 public INITIAL_SUPPLY = 1000000000 * 1 ether;

  function Misscoin() {
    totalSupply = INITIAL_SUPPLY;
    balances[msg.sender] = INITIAL_SUPPLY;
    balances[0x49B25aDDdd6503d275375C7c261A444862360396]=150000000 * 1 ether;
  }
    
}

contract Crowdsale is Ownable {
    
  using SafeMath for uint;
    
  address multisig;

  address restricted;

  bool addtok=false;

  Misscoin public token = new Misscoin();

  uint start;
    
  uint period;

  uint128 constant WAD = 10 ** 18;

  mapping (uint => mapping (address => uint))  public  userBuys;
  mapping (uint => uint)                       public  dailyTotals;
  mapping (uint => mapping (address => bool))  public  claimed;

   function Crowdsale() {
      multisig = 0x49B25aDDdd6503d275375C7c261A444862360396;
      restricted  = 0x49B25aDDdd6503d275375C7c261A444862360396;
      start = 1512741600;
      period = 150;
    }

  modifier saleIsOn() {
    require(now > start && now < start + period * 1 days);
    _;
  }













  function wmul(uint128 x, uint128 y) constant internal returns (uint128 z) {
        z = cast((uint256(x) * y + WAD / 2) / WAD);
    }

    function wdiv(uint128 x, uint128 y) constant internal returns (uint128 z) {
        z = cast((uint256(x) * WAD + y / 2) / y);
    }
  function sub(uint256 a, uint256 b) internal constant returns (uint256) {
    assert(b <= a);
    return a - b;
  }
   function cast(uint256 x) constant internal returns (uint128 z) {
        assert((z = uint128(x)) == x);
  }

  function time() constant returns (uint) {
        return block.timestamp;
  }

  function today() constant returns (uint) {
        return dayFor(time());
  }

  function dayFor(uint timestamp) constant returns (uint) {

        return timestamp < start
            ? 0
            : sub(timestamp, start) / 24 hours + 1;
  }

  function buyWithLimit(uint day, uint limit) payable saleIsOn {
        assert(time() >= start && today() <= period);
        assert(msg.value >= 0.001 ether);
        
        assert(day >= today());
        assert(day <= period);

        userBuys[day][msg.sender] += msg.value;
        dailyTotals[day] += msg.value;

        if (limit != 0) {
            assert(dailyTotals[day] <= limit);
        }

  }

    function addtokens() onlyOwner{
      assert(today() >= 149 && !addtok);
      token.transfer(0x49B25aDDdd6503d275375C7c261A444862360396, 100000000 * 1 ether);
      addtok=true;
    }

    function buy() payable {
       buyWithLimit(today(), 0);
    }

    function () payable {
       buy();
    }
  
  function claim(uint day) saleIsOn {
        assert(today() > day);

        if (claimed[day][msg.sender] || dailyTotals[day] == 0) {
            return;
        }

       

        var dailyTotal = cast(dailyTotals[day]);
        var userTotal  = cast(userBuys[day][msg.sender]);
        var price      = wdiv(cast(5000000), dailyTotal);
        var reward     = wmul(price, userTotal);

        claimed[day][msg.sender] = true;
        token.transfer(msg.sender, reward * 1 ether);

  } 

  function claimAll() {
        for (uint i = 0; i < today(); i++) {
            claim(i);
        }
  }

  function collect() onlyOwner{
        assert(today() > 0); // Prevent recycling during window 0
        multisig.transfer(this.balance);
  }

    
}