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yVaultPrizePoolBuilder.sol
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yVaultPrizePoolBuilder.sol
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// SPDX-License-Identifier: GPL-3.0-only
pragma solidity >=0.6.0 <0.7.0;
pragma experimental ABIEncoderV2;
import "../comptroller/ComptrollerInterface.sol";
import "./SingleRandomWinnerBuilder.sol";
import "../prize-strategy/single-random-winner/SingleRandomWinnerProxyFactory.sol";
import "../prize-pool/yearn/yVaultPrizePoolProxyFactory.sol";
import "../token/ControlledTokenProxyFactory.sol";
import "../token/TicketProxyFactory.sol";
import "../external/yearn/yVaultInterface.sol";
import "../external/openzeppelin/OpenZeppelinProxyFactoryInterface.sol";
/* solium-disable security/no-block-members */
contract yVaultPrizePoolBuilder {
using SafeMath for uint256;
using SafeCast for uint256;
struct yVaultPrizePoolConfig {
yVaultInterface vault;
uint256 reserveRateMantissa;
uint256 maxExitFeeMantissa;
uint256 maxTimelockDuration;
}
event SingleRandomWinnerCreated (
address indexed singleRandomWinner,
address indexed ticket,
address indexed sponsorship
);
event yVaultPrizePoolCreated (
address indexed creator,
address indexed prizePool,
address indexed prizeStrategy
);
ComptrollerInterface public comptroller;
yVaultPrizePoolProxyFactory public vaultPrizePoolProxyFactory;
ControlledTokenProxyFactory public controlledTokenProxyFactory;
TicketProxyFactory public ticketProxyFactory;
SingleRandomWinnerProxyFactory public singleRandomWinnerProxyFactory;
OpenZeppelinProxyFactoryInterface public proxyFactory;
address public trustedForwarder;
constructor (
ComptrollerInterface _comptroller,
SingleRandomWinnerProxyFactory _singleRandomWinnerProxyFactory,
address _trustedForwarder,
yVaultPrizePoolProxyFactory _vaultPrizePoolProxyFactory,
ControlledTokenProxyFactory _controlledTokenProxyFactory,
OpenZeppelinProxyFactoryInterface _proxyFactory,
TicketProxyFactory _ticketProxyFactory
) public {
require(address(_comptroller) != address(0), "yVaultPrizePoolBuilder/comptroller-not-zero");
require(address(_singleRandomWinnerProxyFactory) != address(0), "yVaultPrizePoolBuilder/single-random-winner-factory-not-zero");
require(address(_vaultPrizePoolProxyFactory) != address(0), "yVaultPrizePoolBuilder/compound-prize-pool-builder-not-zero");
require(address(_controlledTokenProxyFactory) != address(0), "yVaultPrizePoolBuilder/controlled-token-proxy-factory-not-zero");
require(address(_proxyFactory) != address(0), "yVaultPrizePoolBuilder/proxy-factory-not-zero");
require(address(_ticketProxyFactory) != address(0), "yVaultPrizePoolBuilder/ticket-proxy-factory-not-zero");
proxyFactory = _proxyFactory;
ticketProxyFactory = _ticketProxyFactory;
comptroller = _comptroller;
singleRandomWinnerProxyFactory = _singleRandomWinnerProxyFactory;
trustedForwarder = _trustedForwarder;
vaultPrizePoolProxyFactory = _vaultPrizePoolProxyFactory;
controlledTokenProxyFactory = _controlledTokenProxyFactory;
}
function createSingleRandomWinner(
yVaultPrizePoolConfig calldata prizePoolConfig,
SingleRandomWinnerBuilder.SingleRandomWinnerConfig calldata prizeStrategyConfig,
uint8 decimals
) external returns (SingleRandomWinner) {
SingleRandomWinner prizeStrategy;
if (prizeStrategyConfig.proxyAdmin != address(0)) {
prizeStrategy = SingleRandomWinner(
proxyFactory.deploy(block.timestamp, address(singleRandomWinnerProxyFactory.instance()), prizeStrategyConfig.proxyAdmin, "")
);
} else {
prizeStrategy = singleRandomWinnerProxyFactory.create();
}
yVaultPrizePool prizePool = _createyVaultPrizePool(
prizePoolConfig,
prizeStrategy
);
prizePool.addControlledToken(address(
_createTicket(
prizePool,
prizeStrategyConfig.ticketName,
prizeStrategyConfig.ticketSymbol,
decimals
)
));
prizePool.addControlledToken(address(
_createControlledToken(
prizePool,
prizeStrategyConfig.sponsorshipName,
prizeStrategyConfig.sponsorshipSymbol,
decimals
)
));
address[] memory tokens = prizePool.tokens();
prizePool.setCreditPlanOf(
tokens[1],
prizeStrategyConfig.ticketCreditRateMantissa.toUint128(),
prizeStrategyConfig.ticketCreditLimitMantissa.toUint128()
);
prizePool.setReserveFeeControlledToken(tokens[0]);
prizeStrategy.initialize(
trustedForwarder,
prizeStrategyConfig.prizePeriodStart,
prizeStrategyConfig.prizePeriodSeconds,
prizePool,
tokens[1],
tokens[0],
prizeStrategyConfig.rngService,
prizeStrategyConfig.externalERC20Awards
);
prizeStrategy.transferOwnership(msg.sender);
prizePool.transferOwnership(msg.sender);
emit SingleRandomWinnerCreated(address(prizeStrategy), tokens[1], tokens[0]);
return prizeStrategy;
}
function _createyVaultPrizePool(
yVaultPrizePoolConfig memory config,
PrizePoolTokenListenerInterface prizeStrategy
)
internal
returns (yVaultPrizePool)
{
yVaultPrizePool prizePool = vaultPrizePoolProxyFactory.create();
address[] memory tokens;
prizePool.initialize(
trustedForwarder,
prizeStrategy,
comptroller,
tokens,
config.maxExitFeeMantissa,
config.maxTimelockDuration,
config.vault,
config.reserveRateMantissa
);
emit yVaultPrizePoolCreated(msg.sender, address(prizePool), address(prizeStrategy));
return prizePool;
}
function createyVaultPrizePool(
yVaultPrizePoolConfig calldata config,
PrizePoolTokenListenerInterface prizeStrategy
)
external
returns (yVaultPrizePool)
{
yVaultPrizePool prizePool = _createyVaultPrizePool(config, prizeStrategy);
prizePool.transferOwnership(msg.sender);
return prizePool;
}
function _createControlledToken(
TokenControllerInterface controller,
string memory name,
string memory symbol,
uint8 decimals
) internal returns (ControlledToken) {
ControlledToken token = controlledTokenProxyFactory.create();
token.initialize(string(name), string(symbol), decimals, trustedForwarder, controller);
return token;
}
function _createTicket(
TokenControllerInterface controller,
string memory name,
string memory symbol,
uint8 decimals
) internal returns (Ticket) {
Ticket ticket = ticketProxyFactory.create();
ticket.initialize(string(name), string(symbol), decimals, trustedForwarder, controller);
return ticket;
}
}