USDPool.sol

import "StablecoinTokenAPI.sol"; 


/// @title Simple bet contract using USD Stablecoins.
/// @author Hadrien Charlanes - <hadrien.charlanes@consensys.net>
contract USDPool {
	//Address of the private stablecoin Contract previously ordered by the SimpleBet dapp.
	address public stablecoinLicensedAddress;
	//Private Stablecoin service Contract Instance.
	StablecoinTokenAPI public licensedStablecoin;
	//Name of the pool
	string public poolName;
	//Receiver of the pot
	address public receiver;
	//Price of the USD gift in USDcents;
	uint public giftPriceInCents;
	//Status of the USDPot
	bool public potIsFull;
	//Price of the USD gift in WEI at the time of the pot Creation (To manage edge cases)
	uint public giftPriceInWEI;
	//events
	event PoolFull();
	event PoolFilled(address indexed sender, uint indexed amountInCents);
	event PoolEmptied();

	///@dev Constructor, sets a pot for a USD gift.
	function USDPool (address _stablecoinLicensedAddress, uint _giftPriceInCents, address _receiver, string _poolName) {
		stablecoinLicensedAddress = _stablecoinLicensedAddress;
		licensedStablecoin = StablecoinTokenAPI(stablecoinLicensedAddress);
		if (licensedStablecoin.creator() == address(0)) throw;
		poolName = _poolName;
		giftPriceInCents = _giftPriceInCents;
		giftPriceInWEI = licensedStablecoin.getUSDcentstoWEIPrice(_giftPriceInCents);
		receiver = _receiver;
	}

	modifier poolFull (bool boolean) {if (potIsFull==boolean) throw; _}

	function fillThePool () poolFull(true) public returns(bool) {
		
		uint amountInCents = licensedStablecoin.convertToUSD.value(msg.value)();		
			if (licensedStablecoin.balanceOf(address(this)) + licensedStablecoin.getUSDcentstoWEIPrice(this.balance) >= giftPriceInCents) {
				potIsFull = true;
				PoolFull();
			}
			PoolFilled(msg.sender, amountInCents);
	}

	function sendThePool () poolFull(false) public returns (bool) {
		// Might do nothing in case of already withdrawn stablecoins.
		licensedStablecoin.convertToETH(licensedStablecoin.balanceOf(address(this)));
		receiver.send(this.balance);
		PoolEmptied();
		return true;
	}
}