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openzeppelin-contracts/contracts/payment/SplitPayment.sol

75 lines
1.7 KiB

pragma solidity ^0.4.24;
import "../math/SafeMath.sol";
/**
* @title SplitPayment
* @dev Base contract that supports multiple payees claiming funds sent to this contract
* according to the proportion they own.
*/
contract SplitPayment {
using SafeMath for uint256;
uint256 public totalShares = 0;
uint256 public totalReleased = 0;
mapping(address => uint256) public shares;
mapping(address => uint256) public released;
address[] public payees;
/**
* @dev Constructor
*/
constructor(address[] _payees, uint256[] _shares) public payable {
require(_payees.length == _shares.length);
for (uint256 i = 0; i < _payees.length; i++) {
addPayee(_payees[i], _shares[i]);
}
}
/**
* @dev payable fallback
*/
function () public payable {}
/**
* @dev Claim your share of the balance.
*/
function claim() public {
address payee = msg.sender;
require(shares[payee] > 0);
uint256 totalReceived = address(this).balance.add(totalReleased);
uint256 payment = totalReceived.mul(
shares[payee]).div(
totalShares).sub(
released[payee]
);
require(payment != 0);
require(address(this).balance >= payment);
released[payee] = released[payee].add(payment);
totalReleased = totalReleased.add(payment);
payee.transfer(payment);
}
/**
* @dev Add a new payee to the contract.
* @param _payee The address of the payee to add.
* @param _shares The number of shares owned by the payee.
*/
function addPayee(address _payee, uint256 _shares) internal {
require(_payee != address(0));
require(_shares > 0);
require(shares[_payee] == 0);
payees.push(_payee);
shares[_payee] = _shares;
totalShares = totalShares.add(_shares);
}
}