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pragma solidity ^0.4.24;
import "./Escrow.sol";
/**
* @title PullPayment
* @dev Base contract supporting async send for pull payments. Inherit from this
* contract and use _asyncTransfer instead of send or transfer.
*/
contract PullPayment {
Escrow private _escrow;
constructor() public {
_escrow = new Escrow();
}
/**
* @dev Withdraw accumulated balance.
* @param payee Whose balance will be withdrawn.
*/
function withdrawPayments(address payee) public {
_escrow.withdraw(payee);
}
/**
* @dev Returns the credit owed to an address.
* @param dest The creditor's address.
*/
function payments(address dest) public view returns (uint256) {
return _escrow.depositsOf(dest);
}
/**
* @dev Called by the payer to store the sent amount as credit to be pulled.
* @param dest The destination address of the funds.
* @param amount The amount to transfer.
*/
function _asyncTransfer(address dest, uint256 amount) internal {
_escrow.deposit.value(amount)(dest);
}
}