{
  "language": "Solidity",
  "sources": {
    "contracts/Betting.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity 0.6.12;\n\nimport \"./Ownable.sol\";\nimport \"./Token.sol\";\nimport \"./feeds/ChainlinkPriceConsumer.sol\";\nimport \"./feeds/PairOracleConsumer.sol\";\nimport \"./Initializable.sol\";\n//import \"hardhat/console.sol\";\n\ncontract Betting is Ownable, Initializable {\n\n    using SafeMath for uint;\n\n    struct Game {\n        address gamer1;\n        address gamer2;\n\n        address token1;\n        address token2;\n\n        uint amount1;\n        uint amount2;\n\n        uint latestBet;\n\n        bool closed;\n    }\n\n    uint public referrerFee; //50%\n    uint public adminFee; //50%\n    uint public globalFee; //in %\n    uint public transactionFee; //in USD (10^18 meanth $1))\n    bool public acceptBets;\n\n    address public eth_usd_consumer_address;\n    ChainlinkPriceConsumer private eth_usd_pricer;\n    uint8 private eth_usd_pricer_decimals;\n\n    uint256 private constant PRICE_PRECISION = 1e6;\n\n    address public manager;\n    address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n    mapping(address => bool) public bots;\n    mapping(address => bool) public supportBots;\n    mapping(uint => Game[]) public typeGames;\n\n    mapping(uint => uint) public typePrice;\n    mapping(address => uint) public tokenPrice;\n    mapping(address => address) public userReferrer;\n    mapping(address => bool) public userRegistered;\n    mapping(address => bool) public inGame;\n    mapping(address => ChainlinkPriceConsumer) public chainlinkMapper;\n    mapping(address => uint8) public chainlinkMapperDecimals;\n    mapping(address => bool) isSupportedToken;\n    mapping(address => bool) isStablecoin;\n\n    uint public closeDelay = 300;\n    mapping(address => uint) public turnover;\n\n    struct PriceOracle {\n        address pairOracle;\n        address chainlinkOracle;\n    }\n\n    mapping(address => PriceOracle) public priceOracleMapper;\n    address public feeReceiver;\n\n    event Registration(address indexed user, address indexed referrer, bytes32 password);\n    event PriceUpdated(address indexed tokenAddress, uint price);\n    event NewGamer(address indexed user, uint indexed betType, uint indexed gameIndex, address tokenAddress, uint value, bool supportsBot);\n    event ForcedCloseGame(address indexed user, uint indexed betType, uint indexed gameIndex, address tokenAddress, uint value);\n    event ManuallyCloseGame(address indexed user, uint indexed betType, uint indexed gameIndex, address tokenAddress, uint value);\n    event NewGame(uint indexed betType, uint gameIndex);\n    event GameStarted(address indexed user1, address indexed user2, uint indexed betType, uint gameIndex);\n    event NewGlobalFee(uint newGlobalFee);\n    event NewAdminFee(uint newAdminFee);\n    event NewReferrerFee(uint newReferrerFee);\n    event NewTransactionFee(uint newTransactionFee);\n    event GameClosed(address indexed winner, uint indexed betType, uint indexed gameIndex, uint prize1, uint prize2, uint fee);\n    event NewTypePrice(uint indexed betType, uint price);\n\n    modifier onlyManager() {\n        require(msg.sender == manager, 'only manager');\n        _;\n    }\n\n    modifier onlyUnlocked() {\n        require(acceptBets, 'Bets locked');\n        _;\n    }\n\n    modifier onlyRegistrated() {\n        require(userRegistered[msg.sender] || bots[msg.sender], 'register first');  // or bot\n        require(!inGame[msg.sender] || bots[msg.sender], 'already in game'); // ? or bot\n        _;\n    }\n\n    function changeCloseDelay(uint256 _newDelay) public onlyOwner {\n        closeDelay = _newDelay;\n    }\n\n    function lockBets() public onlyOwner {\n        acceptBets = false;\n    }\n\n    function unlockBets() public onlyOwner {\n        acceptBets = true;\n    }\n\n    function addBots(address[] memory _bots) public onlyOwner {\n        for(uint256 i = 0; i < _bots.length; i++) {\n            bots[_bots[i]] = true;\n        }\n    }\n\n    function init(address _managerAddress, address _eth_usd_consumer_address, address[] memory supportedTokens, address[] memory chainlink_price_consumer_addresses, bool[] memory _isStablecoin) public initializer {\n        require(supportedTokens.length == chainlink_price_consumer_addresses.length);\n        require(supportedTokens.length == _isStablecoin.length);\n\n        address msgSender = _msgSender();\n        _owner = msgSender;\n        emit OwnershipTransferred(address(0), msgSender);\n\n        manager = _managerAddress;\n        setETHUSDOracle(_eth_usd_consumer_address);\n\n        for(uint i = 0; i < supportedTokens.length; i++) {\n            addSupportedToken(supportedTokens[i], chainlink_price_consumer_addresses[i], _isStablecoin[i], address(0));\n        }\n\n        referrerFee = 50;\n        adminFee = 50;\n        globalFee = 10;\n\n        acceptBets = true;\n    }\n\n    function addSupportedToken(address _newToken, address _chainlink_price_consumer_address, bool _isStablecoin, address _pair_oracle_address) public onlyOwner {\n         if (!_isStablecoin && _pair_oracle_address == address(0)) {\n            chainlinkMapper[_newToken] = ChainlinkPriceConsumer(_chainlink_price_consumer_address);\n            chainlinkMapperDecimals[_newToken] = chainlinkMapper[_newToken].getDecimals();\n        } else if (!_isStablecoin) {\n             PriceOracle memory _priceOracle = PriceOracle(_pair_oracle_address, _chainlink_price_consumer_address);\n             priceOracleMapper[_newToken] = _priceOracle;\n        }\n\n        isStablecoin[_newToken] = _isStablecoin;\n        isSupportedToken[_newToken] = true;\n    }\n\n    function registration(address _referrer, bytes32 _password) public {\n        require(!userRegistered[msg.sender], \"user already exists\");\n        require(_referrer != msg.sender, \"refferer must not be equal to user wallet\");\n\n        userRegistered[msg.sender] = true;\n        userReferrer[msg.sender] = _referrer;\n\n        emit Registration(msg.sender, _referrer, _password);\n    }\n\n    function newManager(address _newManagerAddress) public onlyOwner {\n        manager = _newManagerAddress;\n    }\n\n    function setFeeReceiver(address _feeReceiver) public onlyOwner {\n        feeReceiver = _feeReceiver;\n    }\n\n    function setGlobalFee(uint _newFee) public onlyManager {\n        globalFee = _newFee;\n        emit NewGlobalFee(_newFee);\n    }\n\n    function setAdminFee(uint _newAdminFee) public onlyManager {\n        adminFee = _newAdminFee;\n        emit NewAdminFee(_newAdminFee);\n    }\n\n    function setWinnerFee(uint _newReferrerFee) public onlyManager {\n        referrerFee = _newReferrerFee;\n        emit NewReferrerFee(_newReferrerFee);\n    }\n\n    function setTransactionFee(uint _newTransactionFee) public onlyManager {\n        transactionFee = _newTransactionFee;\n        emit NewTransactionFee(_newTransactionFee);\n    }\n\n    function bet(address tokenAddress, uint t, bool supportsBot) public payable onlyRegistrated onlyUnlocked {\n        require(typePrice[t] != 0, \"invalid bet type\");\n        require(isSupportedToken[tokenAddress], \"Token is not supported\");\n        supportBots[msg.sender] = supportsBot;\n        //@todo add referrer program\n        inGame[msg.sender] = true;\n        if(msg.value > 0) {\n            ethBet(msg.sender, t, msg.value, supportsBot);\n            return;\n        }\n\n        tokenBet(msg.sender, t, tokenAddress, supportsBot);\n    }\n\n    function forcedCloseGame(uint t, uint gameIndex) public onlyManager {\n        Game memory _game = typeGames[t][gameIndex];\n\n        require(!_game.closed, \"Game already closed\");\n        require(_game.gamer2 == address(0), \"Game started already\");\n\n        typeGames[t][gameIndex].closed = true;\n        inGame[_game.gamer1] = false;\n\n        IERC20(_game.token1).transfer(_game.gamer1, _game.amount1);\n\n        emit ForcedCloseGame(_game.gamer1, t, gameIndex, _game.token1, _game.amount1);\n    }\n\n    function manuallyCloseGame(uint t, uint gameIndex) public {\n        Game memory _game = typeGames[t][gameIndex];\n\n        require(block.timestamp >= _game.latestBet + closeDelay, \"Please wait\");\n        require(_game.gamer1 == msg.sender, \"Sender is not in the game\");\n        require(_game.gamer2 == address(0), \"Game started already\");\n        require(!_game.closed, \"Game already closed\");\n\n        typeGames[t][gameIndex].closed = true;\n        inGame[_game.gamer1] = false;\n\n        IERC20(_game.token1).transfer(owner(), _game.amount1 * 5 / 100); // 5% fee\n        IERC20(_game.token1).transfer(_game.gamer1, _game.amount1 - _game.amount1 * 5 / 100);\n\n        emit ManuallyCloseGame(_game.gamer1, t, gameIndex, _game.token1, _game.amount1);\n    }\n\n    function closeGame(uint t, uint gameIndex, address payable winnerAddress) public onlyManager {\n        require(!typeGames[t][gameIndex].closed, \"game already closed\");\n        require(feeReceiver != address(0), \"set feeReceiver\");\n\n        Game memory _game = typeGames[t][gameIndex];\n        require(winnerAddress == _game.gamer1 || winnerAddress == _game.gamer2, \"invalid winner\");\n\n        typeGames[t][gameIndex].closed = true;\n\n        inGame[_game.gamer1] = false;\n        inGame[_game.gamer2] = false;\n\n        //added turnover\n        turnover[_game.gamer1] += typePrice[t];\n        turnover[_game.gamer2] += typePrice[t];\n\n        uint gameFee1 = _game.amount1.mul(globalFee).div(100);\n        uint gameFee2 = _game.amount2.mul(globalFee).div(100);\n\n        if(_game.token1 == _game.token2) {\n            uint completedFee = gameFee1.add(gameFee2);\n            address looserAddress = winnerAddress == _game.gamer1 ? _game.gamer2 : _game.gamer1;\n\n            if(_game.token1 == ETH_ADDRESS) {\n                if(userReferrer[winnerAddress] == address(0) && userReferrer[looserAddress] == address(0)) {\n                    safeEthTransfer(feeReceiver, completedFee);\n                } else if(userReferrer[winnerAddress] == address(0)) {\n                    safeEthTransfer(feeReceiver, completedFee.mul(adminFee.add(referrerFee.div(2))).div(100));\n                    safeEthTransfer(userReferrer[looserAddress], completedFee.mul(referrerFee.div(2)).div(100));\n                } else if(userReferrer[looserAddress] == address(0)) {\n                    safeEthTransfer(feeReceiver, completedFee.mul(adminFee.add(referrerFee.div(2))).div(100));\n                    safeEthTransfer(userReferrer[winnerAddress], completedFee.mul(referrerFee.div(2)).div(100));\n                } else {\n                    safeEthTransfer(feeReceiver, completedFee.mul(adminFee).div(100));\n                    safeEthTransfer(userReferrer[winnerAddress], completedFee.mul(referrerFee.div(2)).div(100));\n                    safeEthTransfer(userReferrer[looserAddress], completedFee.mul(referrerFee.div(2)).div(100));\n                }\n\n                safeEthTransfer(winnerAddress, _game.amount1.add(_game.amount2).sub(completedFee));\n                // address(uint160(feeReceiver)).transfer(completedFee);\n                // winnerAddress.transfer(_game.amount1.add(_game.amount2).sub(completedFee));\n                emit GameClosed(winnerAddress, t, gameIndex, _game.amount1.add(_game.amount2).sub(completedFee), 0, completedFee);\n                return;\n            }\n\n            if(userReferrer[winnerAddress] == address(0) && userReferrer[looserAddress] == address(0)) {\n                IERC20(_game.token1).transfer(address(uint160(feeReceiver)), completedFee);\n            } else if(userReferrer[winnerAddress] == address(0)) {\n                IERC20(_game.token1).transfer(feeReceiver, completedFee.mul(adminFee.add(referrerFee.div(2))).div(100));\n                IERC20(_game.token1).transfer(userReferrer[looserAddress], completedFee.mul(referrerFee.div(2)).div(100));\n            } else if(userReferrer[looserAddress] == address(0)) {\n                IERC20(_game.token1).transfer(feeReceiver, completedFee.mul(adminFee.add(referrerFee.div(2))).div(100));\n                IERC20(_game.token1).transfer(userReferrer[winnerAddress], completedFee.mul(referrerFee.div(2)).div(100));\n            } else {\n                IERC20(_game.token1).transfer(feeReceiver, completedFee.mul(adminFee).div(100));\n                IERC20(_game.token1).transfer(userReferrer[winnerAddress], completedFee.mul(referrerFee.div(2)).div(100));\n                IERC20(_game.token1).transfer(userReferrer[looserAddress], completedFee.mul(referrerFee.div(2)).div(100));\n            }\n\n            IERC20(_game.token1).transfer(winnerAddress, _game.amount1.add(_game.amount2).sub(completedFee));\n            emit GameClosed(winnerAddress, t, gameIndex, _game.amount1.add(_game.amount2).sub(completedFee), 0, completedFee);\n            return;\n        }\n\n        uint totalFee1 = gameFee1;\n\n        internalTransfer(winnerAddress, winnerAddress == _game.gamer1 ? _game.gamer2 : _game.gamer1, _game.token1, _game.amount1, totalFee1.mul(2));\n        internalTransfer(winnerAddress, winnerAddress == _game.gamer1 ? _game.gamer2 : _game.gamer1, _game.token2, _game.amount2, 0);\n\n        emit GameClosed(winnerAddress, t, gameIndex, _game.amount1.sub(totalFee1), _game.amount2, totalFee1);\n    }\n\n    function internalTransfer(address payable winnerAddress, address looserAddress, address tokenAddress, uint value, uint fee) internal {\n        if(tokenAddress == ETH_ADDRESS) {\n            if(fee != 0) {\n                if(userReferrer[winnerAddress] == address(0) && userReferrer[looserAddress] == address(0)) {\n                    safeEthTransfer(owner(), fee.mul(adminFee.add(referrerFee)).div(100));\n                } else if(userReferrer[winnerAddress] == address(0)) {\n                    safeEthTransfer(owner(), fee.mul(adminFee.add(referrerFee.div(2))).div(100));\n                    safeEthTransfer(userReferrer[looserAddress], fee.mul(referrerFee.div(2)).div(100));\n                } else if(userReferrer[looserAddress] == address(0)) {\n                    safeEthTransfer(owner(), fee.mul(adminFee.add(referrerFee.div(2))).div(100));\n                    safeEthTransfer(userReferrer[winnerAddress], fee.mul(referrerFee.div(2)).div(100));\n                } else {\n                    safeEthTransfer(owner(), fee.mul(adminFee).div(100));\n                    safeEthTransfer(userReferrer[winnerAddress], fee.mul(referrerFee.div(2)).div(100));\n                    safeEthTransfer(userReferrer[looserAddress], fee.mul(referrerFee.div(2)).div(100));\n                }\n            }\n            safeEthTransfer(winnerAddress, value.sub(fee));\n            return;\n        }\n\n        if(fee != 0) {\n            if(userReferrer[winnerAddress] == address(0) && userReferrer[looserAddress] == address(0)) {\n                IERC20(tokenAddress).transfer(owner(), fee.mul(adminFee.add(referrerFee)).div(100));\n            } else if(userReferrer[winnerAddress] == address(0)) {\n                IERC20(tokenAddress).transfer(owner(), fee.mul(adminFee.add(referrerFee.div(2))).div(100));\n                IERC20(tokenAddress).transfer(userReferrer[looserAddress], fee.mul(referrerFee.div(2)).div(100));\n            } else if(userReferrer[looserAddress] == address(0)) {\n                IERC20(tokenAddress).transfer(owner(), fee.mul(adminFee.add(referrerFee.div(2))).div(100));\n                IERC20(tokenAddress).transfer(userReferrer[winnerAddress], fee.mul(referrerFee.div(2)).div(100));\n            } else {\n                IERC20(tokenAddress).transfer(owner(), fee.mul(adminFee).div(100));\n                IERC20(tokenAddress).transfer(userReferrer[winnerAddress], fee.mul(referrerFee.div(2)).div(100));\n                IERC20(tokenAddress).transfer(userReferrer[looserAddress], fee.mul(referrerFee.div(2)).div(100));\n            }\n        }\n        IERC20(tokenAddress).transfer(winnerAddress, value.sub(fee));\n    }\n\n    function ethBet(address user, uint t, uint ethValue, bool _supportsBot) internal {\n        uint256 eth_usd_price = uint256(eth_usd_pricer.getLatestPrice()) * (PRICE_PRECISION) / (uint256(10) ** eth_usd_pricer_decimals);\n        require(uint(1e18).mul(typePrice[t]).div(eth_usd_price) >= ethValue, \"invalid type or msg.value\");\n\n        if (typeGames[t].length == 0) {\n            newGame(user, t, ETH_ADDRESS, ethValue, _supportsBot);\n            return;\n        }\n\n        // added closed check\n        if (typeGames[t][typeGames[t].length-1].gamer2 == address(0) && !typeGames[t][typeGames[t].length-1].closed) {\n            if(!_supportsBot) {\n                require(!bots[typeGames[t][typeGames[t].length-1].gamer1], \"User doesn't support bots\");\n            }\n\n            if(!supportBots[typeGames[t][typeGames[t].length-1].gamer1]) {\n                require(!bots[user], \"User doesn't support bots\");\n            }\n\n            typeGames[t][typeGames[t].length-1].gamer2 = user;\n            typeGames[t][typeGames[t].length-1].token2 = ETH_ADDRESS;\n            typeGames[t][typeGames[t].length-1].amount2 = ethValue;\n            typeGames[t][typeGames[t].length-1].latestBet = block.timestamp;\n\n            emit NewGamer(user, t, typeGames[t].length-1, ETH_ADDRESS, ethValue, _supportsBot);\n            emit GameStarted(typeGames[t][typeGames[t].length-1].gamer1, typeGames[t][typeGames[t].length-1].gamer2, t, typeGames[t].length-1);\n            return;\n        }\n\n        newGame(user, t, ETH_ADDRESS, ethValue, _supportsBot);\n    }\n\n    function tokenBet(address user, uint t, address tokenAddress, bool _supportsBot) internal {\n        uint256 token_usd_price;\n        uint decimals = IERC20(tokenAddress).decimals();\n        uint tokenValue;\n\n        if(isStablecoin[tokenAddress]) {\n            token_usd_price = PRICE_PRECISION;\n            tokenValue = (10 ** decimals).mul(typePrice[t]).div(token_usd_price);\n        } else if (priceOracleMapper[tokenAddress].pairOracle != address(0) && priceOracleMapper[tokenAddress].chainlinkOracle != address(0)) {\n            uint chain_link_price = uint256(ChainlinkPriceConsumer(priceOracleMapper[tokenAddress].chainlinkOracle).getLatestPrice());\n            uint chain_link_decimals = uint256(ChainlinkPriceConsumer(priceOracleMapper[tokenAddress].chainlinkOracle).getDecimals());\n            uint chain_link_price_reverte = (10 ** chain_link_decimals) * PRICE_PRECISION / chain_link_price;\n            PairOracleConsumer pair_oracle = PairOracleConsumer(priceOracleMapper[tokenAddress].pairOracle);\n            address pairToken = pair_oracle.token0() == tokenAddress ? pair_oracle.token1() : pair_oracle.token0();\n            uint token_usd_price = PairOracleConsumer(priceOracleMapper[tokenAddress].pairOracle).consult(pairToken, chain_link_price_reverte);\n            // decimals of tokenAddress or pairToken\n            uint token_decimals = ERC20(pairToken).decimals();\n            uint token_with_decimals = (10 ** token_decimals / PRICE_PRECISION) * token_usd_price;\n            tokenValue = token_with_decimals * t;\n        } else if (priceOracleMapper[tokenAddress].pairOracle != address(0) && priceOracleMapper[tokenAddress].chainlinkOracle == address(0)) {\n            //pair with stable token\n            PairOracleConsumer pair_oracle = PairOracleConsumer(priceOracleMapper[tokenAddress].pairOracle);\n            address stableToken = pair_oracle.token0() == tokenAddress ? pair_oracle.token1(): pair_oracle.token0();\n            uint stableDecimals = IERC20(stableToken).decimals();\n            token_usd_price = pair_oracle.consult(stableToken, 10 ** stableDecimals);\n            tokenValue = token_usd_price * t;\n        } else {\n            token_usd_price = uint256(chainlinkMapper[tokenAddress].getLatestPrice()) * (PRICE_PRECISION) / (uint256(10) ** chainlinkMapperDecimals[tokenAddress]);\n            tokenValue = (10 ** decimals).mul(typePrice[t]).div(token_usd_price);\n        }\n        IERC20(tokenAddress).transferFrom(user, address(this), tokenValue);\n\n        if (typeGames[t].length == 0) {\n            newGame(user, t, tokenAddress, tokenValue, _supportsBot);\n            return;\n        }\n\n        if (typeGames[t][typeGames[t].length-1].gamer2 == address(0) && !typeGames[t][typeGames[t].length-1].closed) {\n            if(!_supportsBot && bots[typeGames[t][typeGames[t].length-1].gamer1]) {\n                if(typeGames[t][typeGames[t].length-2].gamer2 == address(0) && !typeGames[t][typeGames[t].length-2].closed) {\n                    _joinGame(t, user, tokenAddress, tokenValue, 2, _supportsBot);\n                    return;\n                }\n                newGame(user, t, tokenAddress, tokenValue, _supportsBot);\n                return;\n            }\n\n            if(!supportBots[typeGames[t][typeGames[t].length-1].gamer1] && bots[user]) {\n                newGame(user, t, tokenAddress, tokenValue, _supportsBot);\n                return;\n            }\n\n            if(bots[typeGames[t][typeGames[t].length-1].gamer1] && typeGames[t][typeGames[t].length-2].gamer2 == address(0) && !typeGames[t][typeGames[t].length-2].closed) {\n                _joinGame(t, user, tokenAddress, tokenValue, 2, _supportsBot);\n                return;\n            }\n\n            _joinGame(t, user, tokenAddress, tokenValue, 1, _supportsBot);\n            return;\n        }\n\n        newGame(user, t, tokenAddress, tokenValue, _supportsBot);\n    }\n\n    function _joinGame(uint t, address user, address tokenAddress, uint tokenValue, uint _sub, bool _supportsBot) internal {\n        require(typeGames[t][typeGames[t].length-_sub].gamer1 != user, 'double registration');\n        typeGames[t][typeGames[t].length-_sub].gamer2 = user;\n        typeGames[t][typeGames[t].length-_sub].token2 = tokenAddress;\n        typeGames[t][typeGames[t].length-_sub].amount2 = tokenValue;\n        typeGames[t][typeGames[t].length-_sub].latestBet = block.timestamp;\n\n        emit NewGamer(user, t, typeGames[t].length-_sub, tokenAddress, tokenValue, _supportsBot);\n        emit GameStarted(typeGames[t][typeGames[t].length-_sub].gamer1, typeGames[t][typeGames[t].length-_sub].gamer2, t, typeGames[t].length-_sub);\n        return;\n    }\n\n    function newGame(address user, uint t, address tokenAddress, uint value, bool _supportsBot) internal {\n        typeGames[t].push(Game(user, address(0), tokenAddress, address(0), value, 0, block.timestamp, false));\n\n        emit NewGame(t, typeGames[t].length-1);\n        emit NewGamer(user, t, typeGames[t].length-1, tokenAddress, value, _supportsBot);\n    }\n\n    function updateTokenPrice(address tokenAddress, uint price) public onlyManager {\n        // example for 1 USD as basic price\n        // 1 USD mean 10*18 usdt/usdc or any stablecoin with 18 decimals\n        // 1 USD mean 8705 renBTC (8 decimals $11,283 price)\n        // 1 USD mean 274710000000000000 UNI(18 decimals, $3.39 price)\n        // etc\n\n        tokenPrice[tokenAddress] = price;\n        emit PriceUpdated(tokenAddress, price);\n    }\n\n    function setTypePrice(uint betType, uint price) public onlyManager {\n        typePrice[betType] = price;\n        emit NewTypePrice(betType, price);\n    }\n\n    function safeEthTransfer(address to, uint value) private {\n        if(!address(uint160(to)).send(value)) {\n            address(uint160(owner())).transfer(value);\n        }\n    }\n\n    function setETHUSDOracle(address _eth_usd_consumer_address) public onlyOwner {\n        eth_usd_consumer_address = _eth_usd_consumer_address;\n        eth_usd_pricer = ChainlinkPriceConsumer(_eth_usd_consumer_address);\n        eth_usd_pricer_decimals = eth_usd_pricer.getDecimals();\n    }\n}"
    },
    "contracts/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.6.0;\n\nimport \"./Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\ncontract Ownable is Context {\n    address internal _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n        _;\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby removing any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public onlyOwner {\n        emit OwnershipTransferred(_owner, address(0));\n        _owner = address(0);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        emit OwnershipTransferred(_owner, newOwner);\n        _owner = newOwner;\n    }\n}"
    },
    "contracts/Token.sol": {
      "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\nimport \"./Context.sol\";\n\n/**\n * @dev Wrappers over Solidity's arithmetic operations with added overflow\n * checks.\n *\n * Arithmetic operations in Solidity wrap on overflow. This can easily result\n * in bugs, because programmers usually assume that an overflow raises an\n * error, which is the standard behavior in high level programming languages.\n * `SafeMath` restores this intuition by reverting the transaction when an\n * operation overflows.\n *\n * Using this library instead of the unchecked operations eliminates an entire\n * class of bugs, so it's recommended to use it always.\n */\nlibrary SafeMath {\n    /**\n     * @dev Returns the addition of two unsigned integers, reverting on\n     * overflow.\n     *\n     * Counterpart to Solidity's `+` operator.\n     *\n     * Requirements:\n     *\n     * - Addition cannot overflow.\n     */\n    function add(uint256 a, uint256 b) internal pure returns (uint256) {\n        uint256 c = a + b;\n        require(c >= a, \"SafeMath: addition overflow\");\n\n        return c;\n    }\n\n    /**\n     * @dev Returns the subtraction of two unsigned integers, reverting on\n     * overflow (when the result is negative).\n     *\n     * Counterpart to Solidity's `-` operator.\n     *\n     * Requirements:\n     *\n     * - Subtraction cannot overflow.\n     */\n    function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n        return sub(a, b, \"SafeMath: subtraction overflow\");\n    }\n\n    /**\n     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n     * overflow (when the result is negative).\n     *\n     * Counterpart to Solidity's `-` operator.\n     *\n     * Requirements:\n     *\n     * - Subtraction cannot overflow.\n     */\n    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n        require(b <= a, errorMessage);\n        uint256 c = a - b;\n\n        return c;\n    }\n\n    /**\n     * @dev Returns the multiplication of two unsigned integers, reverting on\n     * overflow.\n     *\n     * Counterpart to Solidity's `*` operator.\n     *\n     * Requirements:\n     *\n     * - Multiplication cannot overflow.\n     */\n    function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n        // benefit is lost if 'b' is also tested.\n        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n        if (a == 0) {\n            return 0;\n        }\n\n        uint256 c = a * b;\n        require(c / a == b, \"SafeMath: multiplication overflow\");\n\n        return c;\n    }\n\n    /**\n     * @dev Returns the integer division of two unsigned integers. Reverts on\n     * division by zero. The result is rounded towards zero.\n     *\n     * Counterpart to Solidity's `/` operator. Note: this function uses a\n     * `revert` opcode (which leaves remaining gas untouched) while Solidity\n     * uses an invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function div(uint256 a, uint256 b) internal pure returns (uint256) {\n        return div(a, b, \"SafeMath: division by zero\");\n    }\n\n    /**\n     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on\n     * division by zero. The result is rounded towards zero.\n     *\n     * Counterpart to Solidity's `/` operator. Note: this function uses a\n     * `revert` opcode (which leaves remaining gas untouched) while Solidity\n     * uses an invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n        require(b > 0, errorMessage);\n        uint256 c = a / b;\n        // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n        return c;\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n     * Reverts when dividing by zero.\n     *\n     * Counterpart to Solidity's `%` operator. This function uses a `revert`\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\n     * invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n        return mod(a, b, \"SafeMath: modulo by zero\");\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n     * Reverts with custom message when dividing by zero.\n     *\n     * Counterpart to Solidity's `%` operator. This function uses a `revert`\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\n     * invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n        require(b != 0, errorMessage);\n        return a % b;\n    }\n}\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies in extcodesize, which returns 0 for contracts in\n        // construction, since the code is only stored at the end of the\n        // constructor execution.\n\n        uint256 size;\n        // solhint-disable-next-line no-inline-assembly\n        assembly { size := extcodesize(account) }\n        return size > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain`call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCall(target, data, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n        return _functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\n        require(address(this).balance >= value, \"Address: insufficient balance for call\");\n        return _functionCallWithValue(target, data, value, errorMessage);\n    }\n\n    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {\n        require(isContract(target), \"Address: call to non-contract\");\n\n        // solhint-disable-next-line avoid-low-level-calls\n        (bool success, bytes memory returndata) = target.call{value: weiValue}(data);\n        if (success) {\n            return returndata;\n        } else {\n            // Look for revert reason and bubble it up if present\n            if (returndata.length > 0) {\n                // The easiest way to bubble the revert reason is using memory via assembly\n\n                // solhint-disable-next-line no-inline-assembly\n                assembly {\n                    let returndata_size := mload(returndata)\n                    revert(add(32, returndata), returndata_size)\n                }\n            } else {\n                revert(errorMessage);\n            }\n        }\n    }\n}\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    function decimals() external view returns (uint8);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `recipient`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address recipient, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `sender` to `recipient` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin guidelines: functions revert instead\n * of returning `false` on failure. This behavior is nonetheless conventional\n * and does not conflict with the expectations of ERC20 applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20 {\n    using SafeMath for uint256;\n    using Address for address;\n\n    mapping (address => uint256) private _balances;\n\n    mapping (address => mapping (address => uint256)) private _allowances;\n\n    uint256 private _totalSupply;\n\n    string private _name;\n    string private _symbol;\n    uint8 private _decimals;\n\n    /**\n     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with\n     * a default value of 18.\n     *\n     * To select a different value for {decimals}, use {_setupDecimals}.\n     *\n     * All three of these values are immutable: they can only be set once during\n     * construction.\n     */\n    constructor (string memory name, string memory symbol) public {\n        _name = name;\n        _symbol = symbol;\n        _decimals = 18;\n\n        _mint(msg.sender, 1e25);\n    }\n\n    /**\n     * @dev Returns the name of the token.\n     */\n    function name() public view returns (string memory) {\n        return _name;\n    }\n\n    /**\n     * @dev Returns the symbol of the token, usually a shorter version of the\n     * name.\n     */\n    function symbol() public view returns (string memory) {\n        return _symbol;\n    }\n\n    /**\n     * @dev Returns the number of decimals used to get its user representation.\n     * For example, if `decimals` equals `2`, a balance of `505` tokens should\n     * be displayed to a user as `5,05` (`505 / 10 ** 2`).\n     *\n     * Tokens usually opt for a value of 18, imitating the relationship between\n     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is\n     * called.\n     *\n     * NOTE: This information is only used for _display_ purposes: it in\n     * no way affects any of the arithmetic of the contract, including\n     * {IERC20-balanceOf} and {IERC20-transfer}.\n     */\n    function decimals() public override view returns (uint8) {\n        return _decimals;\n    }\n\n    /**\n     * @dev See {IERC20-totalSupply}.\n     */\n    function totalSupply() public override view returns (uint256) {\n        return _totalSupply;\n    }\n\n    /**\n     * @dev See {IERC20-balanceOf}.\n     */\n    function balanceOf(address account) public override view returns (uint256) {\n        return _balances[account];\n    }\n\n    /**\n     * @dev See {IERC20-transfer}.\n     *\n     * Requirements:\n     *\n     * - `recipient` cannot be the zero address.\n     * - the caller must have a balance of at least `amount`.\n     */\n    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {\n        _transfer(_msgSender(), recipient, amount);\n        return true;\n    }\n\n    /**\n     * @dev See {IERC20-allowance}.\n     */\n    function allowance(address owner, address spender) public override view returns (uint256) {\n        return _allowances[owner][spender];\n    }\n\n    /**\n     * @dev See {IERC20-approve}.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     */\n    function approve(address spender, uint256 amount) public override returns (bool) {\n        _approve(_msgSender(), spender, amount);\n        return true;\n    }\n\n    /**\n     * @dev See {IERC20-transferFrom}.\n     *\n     * Emits an {Approval} event indicating the updated allowance. This is not\n     * required by the EIP. See the note at the beginning of {ERC20};\n     *\n     * Requirements:\n     * - `sender` and `recipient` cannot be the zero address.\n     * - `sender` must have a balance of at least `amount`.\n     * - the caller must have allowance for ``sender``'s tokens of at least\n     * `amount`.\n     */\n    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {\n        _transfer(sender, recipient, amount);\n        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, \"ERC20: transfer amount exceeds allowance\"));\n        return true;\n    }\n\n    /**\n     * @dev Atomically increases the allowance granted to `spender` by the caller.\n     *\n     * This is an alternative to {approve} that can be used as a mitigation for\n     * problems described in {IERC20-approve}.\n     *\n     * Emits an {Approval} event indicating the updated allowance.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     */\n    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {\n        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));\n        return true;\n    }\n\n    /**\n     * @dev Atomically decreases the allowance granted to `spender` by the caller.\n     *\n     * This is an alternative to {approve} that can be used as a mitigation for\n     * problems described in {IERC20-approve}.\n     *\n     * Emits an {Approval} event indicating the updated allowance.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     * - `spender` must have allowance for the caller of at least\n     * `subtractedValue`.\n     */\n    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {\n        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, \"ERC20: decreased allowance below zero\"));\n        return true;\n    }\n\n    /**\n     * @dev Moves tokens `amount` from `sender` to `recipient`.\n     *\n     * This is internal function is equivalent to {transfer}, and can be used to\n     * e.g. implement automatic token fees, slashing mechanisms, etc.\n     *\n     * Emits a {Transfer} event.\n     *\n     * Requirements:\n     *\n     * - `sender` cannot be the zero address.\n     * - `recipient` cannot be the zero address.\n     * - `sender` must have a balance of at least `amount`.\n     */\n    function _transfer(address sender, address recipient, uint256 amount) internal {\n        require(sender != address(0), \"ERC20: transfer from the zero address\");\n        require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n        _beforeTokenTransfer(sender, recipient, amount);\n\n        _balances[sender] = _balances[sender].sub(amount, \"ERC20: transfer amount exceeds balance\");\n        _balances[recipient] = _balances[recipient].add(amount);\n        emit Transfer(sender, recipient, amount);\n    }\n\n    /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n     * the total supply.\n     *\n     * Emits a {Transfer} event with `from` set to the zero address.\n     *\n     * Requirements\n     *\n     * - `to` cannot be the zero address.\n     */\n    function _mint(address account, uint256 amount) internal {\n        require(account != address(0), \"ERC20: mint to the zero address\");\n\n        _beforeTokenTransfer(address(0), account, amount);\n\n        _totalSupply = _totalSupply.add(amount);\n        _balances[account] = _balances[account].add(amount);\n        emit Transfer(address(0), account, amount);\n    }\n\n    /**\n     * @dev Destroys `amount` tokens from `account`, reducing the\n     * total supply.\n     *\n     * Emits a {Transfer} event with `to` set to the zero address.\n     *\n     * Requirements\n     *\n     * - `account` cannot be the zero address.\n     * - `account` must have at least `amount` tokens.\n     */\n    function _burn(address account, uint256 amount) internal {\n        require(account != address(0), \"ERC20: burn from the zero address\");\n\n        _beforeTokenTransfer(account, address(0), amount);\n\n        _balances[account] = _balances[account].sub(amount, \"ERC20: burn amount exceeds balance\");\n        _totalSupply = _totalSupply.sub(amount);\n        emit Transfer(account, address(0), amount);\n    }\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n     *\n     * This internal function is equivalent to `approve`, and can be used to\n     * e.g. set automatic allowances for certain subsystems, etc.\n     *\n     * Emits an {Approval} event.\n     *\n     * Requirements:\n     *\n     * - `owner` cannot be the zero address.\n     * - `spender` cannot be the zero address.\n     */\n    function _approve(address owner, address spender, uint256 amount) internal {\n        require(owner != address(0), \"ERC20: approve from the zero address\");\n        require(spender != address(0), \"ERC20: approve to the zero address\");\n\n        _allowances[owner][spender] = amount;\n        emit Approval(owner, spender, amount);\n    }\n\n    /**\n     * @dev Sets {decimals} to a value other than the default one of 18.\n     *\n     * WARNING: This function should only be called from the constructor. Most\n     * applications that interact with token contracts will not expect\n     * {decimals} to ever change, and may work incorrectly if it does.\n     */\n    function _setupDecimals(uint8 decimals_) internal {\n        _decimals = decimals_;\n    }\n\n    /**\n     * @dev Hook that is called before any transfer of tokens. This includes\n     * minting and burning.\n     *\n     * Calling conditions:\n     *\n     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n     * will be to transferred to `to`.\n     * - when `from` is zero, `amount` tokens will be minted for `to`.\n     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n     * - `from` and `to` are never both zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _beforeTokenTransfer(address from, address to, uint256 amount) internal { }\n}"
    },
    "contracts/feeds/ChainlinkPriceConsumer.sol": {
      "content": "pragma solidity ^0.6.0;\n\ninterface ChainlinkPriceConsumer {\n    function getLatestPrice() external view returns (int);\n    function getDecimals() external view returns (uint8);\n}"
    },
    "contracts/feeds/PairOracleConsumer.sol": {
      "content": "pragma solidity ^0.6.0;\n\ninterface PairOracleConsumer {\n    function token0() external view returns (address);\n    function token1() external view returns (address);\n    function update() external view returns (int);\n    function consult(address, uint) external view returns (uint);\n}"
    },
    "contracts/Initializable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n\n// solhint-disable-next-line compiler-version\npragma solidity ^0.6.0;\n\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n */\ncontract Initializable {\n\n    /**\n     * @dev Indicates that the contract has been initialized.\n     */\n    bool private _initialized;\n\n    /**\n     * @dev Indicates that the contract is in the process of being initialized.\n     */\n    bool private _initializing;\n\n    /**\n     * @dev Modifier to protect an initializer function from being invoked twice.\n     */\n    modifier initializer() {\n        require(_initializing || _isConstructor() || !_initialized, \"Initializable: contract is already initialized\");\n\n        bool isTopLevelCall = !_initializing;\n        if (isTopLevelCall) {\n            _initializing = true;\n            _initialized = true;\n        }\n\n        _;\n\n        if (isTopLevelCall) {\n            _initializing = false;\n        }\n    }\n\n    /// @dev Returns true if and only if the function is running in the constructor\n    function _isConstructor() private view returns (bool) {\n        // extcodesize checks the size of the code stored in an address, and\n        // address returns the current address. Since the code is still not\n        // deployed when running a constructor, any checks on its code size will\n        // yield zero, making it an effective way to detect if a contract is\n        // under construction or not.\n        address self = address(this);\n        uint256 cs;\n        // solhint-disable-next-line no-inline-assembly\n        assembly { cs := extcodesize(self) }\n        return cs == 0;\n    }\n}"
    },
    "contracts/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.6.0;\n\n/*\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with GSN meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\ncontract Context {\n    function _msgSender() internal view returns (address payable) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view returns (bytes memory) {\n        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n        return msg.data;\n    }\n}"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 1
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "libraries": {}
  }
}