Contribution.sol

Contribution.sol

pragma solidity ^0.4.11;
import "./SafeMath.sol";
import "./Owned.sol";

contract Contribution is SafeMath, Owned {
    uint256 public constant MIN_FUND = (0.01 ether);
    uint256 public constant CRAWDSALE_START_DAY = 1;
    uint256 public constant CRAWDSALE_END_DAY = 7;

    uint256 public dayCycle = 24 hours;

    uint256 public fundingStartTime = 0;
    address public ethFundDeposit = 0;
    bool public isFinalize;
    mapping (uint => uint) public dailyTotals; //每天收到的eth总量
    mapping (uint => mapping (address => uint)) public userBuys; // 每天每个用户用于购买ATM的eth总量
    uint256 public totalContributedETH = 0;
    // events
    event LogBuy (uint window, address user, uint amount);
    event LogCreate (address tokenAddr, uint fundingStartTime, uint dayCycle);
    event LogFinalize (uint finalizeTime);

    function Contribution (address _ethFundDeposit, uint256 _fundingStartTime, uint256 _dayCycle)  {
        require( now < _fundingStartTime );
        require( _ethFundDeposit != address(0) );

        fundingStartTime = _fundingStartTime;
        dayCycle = _dayCycle;
        ethFundDeposit = _ethFundDeposit;

        isFinalize = false;

        LogCreate(ethFundDeposit, fundingStartTime, dayCycle);
     }

    //crawdsale entry
    function () payable {
        require(!isFinalize);
        require( msg.value >= MIN_FUND ); //防止用户发起无转账金额的无效交易

        uint day = today();
        require( day >= CRAWDSALE_START_DAY && day <= CRAWDSALE_END_DAY ); 
        
        ethFundDeposit.transfer(msg.value);
        //记录每个用户当天支付的ETH, 和当天所有收到的ETH
        userBuys[day][msg.sender] += msg.value;
        dailyTotals[day] += msg.value;
        totalContributedETH += msg.value;

        LogBuy(day, msg.sender, msg.value);
    }

    function kill() onlyOwner {
        selfdestruct(owner);
    }

    function finalize() onlyOwner {
        isFinalize = true;
        LogFinalize(now);
    }
    function today() constant returns (uint) {
        return sub(now, fundingStartTime) / dayCycle + 1;
    }
}