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pragma solidity 0.6.12;

import "../base/Num.sol";
import "../interfaces/IERC20.sol";
import "../interfaces/AggregatorV2V3Interface.sol";
import "../interfaces/IUniswapOracle.sol";

library SafeMath {
    function add(uint a, uint b) internal pure returns (uint) {
        uint c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    function sub(uint a, uint b) internal pure returns (uint) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(
        uint a,
        uint b,
        string memory errorMessage
    ) internal pure returns (uint) {
        require(b <= a, errorMessage);
        uint c = a - b;

        return c;
    }

    function mul(uint a, uint b) internal pure returns (uint) {
        if (a == 0) {
            return 0;
        }

        uint c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    function div(uint a, uint b) internal pure returns (uint) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(
        uint a,
        uint b,
        string memory errorMessage
    ) internal pure returns (uint) {
        require(b > 0, errorMessage);
        uint c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    function mod(uint a, uint b) internal pure returns (uint) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    function mod(
        uint a,
        uint b,
        string memory errorMessage
    ) internal pure returns (uint) {
        require(b != 0, errorMessage);
        return a % b;
    }

    function abs(uint a, uint b) internal pure returns(uint result, bool isFirstBigger) {
        if(a > b){
            result = a - b;
            isFirstBigger = true;
        } else {
            result = b - a;
            isFirstBigger = false;
        }
    }
}

contract DesynChainlinkOracle is Num {
    address public admin;
    using SafeMath for uint;
    IUniswapOracle public twapOracle;
    mapping(address => uint) internal prices;
    mapping(bytes32 => AggregatorV2V3Interface) internal feeds;
    event PricePosted(address asset, uint previousPriceMantissa, uint requestedPriceMantissa, uint newPriceMantissa);
    event NewAdmin(address oldAdmin, address newAdmin);
    event FeedSet(address feed, string symbol);

    constructor(address twapOracle_) public {
        admin = msg.sender;
        twapOracle = IUniswapOracle(twapOracle_);
    }

    function getPrice(address tokenAddress) public returns (uint price) {
        IERC20 token = IERC20(tokenAddress);
        AggregatorV2V3Interface feed = getFeed(token.symbol());
        if (prices[address(token)] != 0) {
            price = prices[address(token)];
        } else if (address(feed) != address(0)) {
            price = getChainlinkPrice(feed);
        } else {
            try twapOracle.update(address(token)) {} catch {}
            price = getUniswapPrice(tokenAddress);
        }

        (uint decimalDelta, bool isUnderFlow18) = uint(18).abs(uint(token.decimals()));

        if(isUnderFlow18){
            return price.mul(10**decimalDelta);
        }

        if(!isUnderFlow18){
            return price.div(10**decimalDelta);
        }
    }

    function getAllPrice(address[] calldata poolTokens, uint[] calldata actualAmountsOut) external returns (uint fundAll) {
        require(poolTokens.length == actualAmountsOut.length, "Invalid Length");
        
        for (uint i = 0; i < poolTokens.length; i++) {
            address t = poolTokens[i];
            uint tokenAmountOut = actualAmountsOut[i];
            fundAll = badd(fundAll, bmul(getPrice(t), tokenAmountOut));
        }
    }

    function getChainlinkPrice(AggregatorV2V3Interface feed) internal view returns (uint) {
        // Chainlink USD-denominated feeds store answers at 8 decimals
        uint decimalDelta = bsub(uint(18), feed.decimals());
        // Ensure that we don't multiply the result by 0
        if (decimalDelta > 0) {
            return uint(feed.latestAnswer()).mul(10**decimalDelta);
        } else {
            return uint(feed.latestAnswer());
        }
    }

    function getUniswapPrice(address tokenAddress) internal view returns (uint) {
        IERC20 token = IERC20(tokenAddress);
        uint price = twapOracle.consult(tokenAddress, uint(10) ** token.decimals());
        return price;
    }

    function setDirectPrice(address asset, uint price) external onlyAdmin {
        emit PricePosted(asset, prices[asset], price, price);
        prices[asset] = price;
    }

    function setFeed(string calldata symbol, address feed) external onlyAdmin {
        require(feed != address(0) && feed != address(this), "invalid feed address");
        emit FeedSet(feed, symbol);
        feeds[keccak256(abi.encodePacked(symbol))] = AggregatorV2V3Interface(feed);
    }

    function getFeed(string memory symbol) public view returns (AggregatorV2V3Interface) {
        return feeds[keccak256(abi.encodePacked(symbol))];
    }

    function assetPrices(address asset) external view returns (uint) {
        return prices[asset];
    }

    function compareStrings(string memory a, string memory b) internal pure returns (bool) {
        return (keccak256(abi.encodePacked((a))) == keccak256(abi.encodePacked((b))));
    }

    function setAdmin(address newAdmin) external onlyAdmin {
        require(newAdmin != address(0),"ERR_ZERO_ADDRESS");
        address oldAdmin = admin;
        admin = newAdmin;

        emit NewAdmin(oldAdmin, newAdmin);
    }

    modifier onlyAdmin() {
        require(msg.sender == admin, "only admin may call");
        _;
    }
}

pragma solidity 0.6.12;

/**
 * @title The V2 & V3 Aggregator Interface
 * @notice Solidity V0.5 does not allow interfaces to inherit from other
 * interfaces so this contract is a combination of v0.5 AggregatorInterface.sol
 * and v0.5 AggregatorV3Interface.sol.
 */
interface AggregatorV2V3Interface {
    //
    // V2 Interface:
    //
    function latestAnswer() external view returns (int);

    function latestTimestamp() external view returns (uint);

    function latestRound() external view returns (uint);

    function getAnswer(uint roundId) external view returns (int);

    function getTimestamp(uint roundId) external view returns (uint);

    event AnswerUpdated(int indexed current, uint indexed roundId, uint timestamp);
    event NewRound(uint indexed roundId, address indexed startedBy, uint startedAt);

    //
    // V3 Interface:
    //
    function decimals() external view returns (uint8);

    function description() external view returns (string memory);

    function version() external view returns (uint);

    // getRoundData and latestRoundData should both raise "No data present"
    // if they do not have data to report, instead of returning unset values
    // which could be misinterpreted as actual reported values.
    function getRoundData(uint80 _roundId)
        external
        view
        returns (
            uint80 roundId,
            int answer,
            uint startedAt,
            uint updatedAt,
            uint80 answeredInRound
        );

    function latestRoundData()
        external
        view
        returns (
            uint80 roundId,
            int answer,
            uint startedAt,
            uint updatedAt,
            uint80 answeredInRound
        );
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.6.12;

import "./Const.sol";

// Core contract; can't be changed. So disable solhint (reminder for v2)

/* solhint-disable private-vars-leading-underscore */

contract Num is Const {
    function btoi(uint a) internal pure returns (uint) {
        return a / BONE;
    }

    function bfloor(uint a) internal pure returns (uint) {
        return btoi(a) * BONE;
    }

    function badd(uint a, uint b) internal pure returns (uint) {
        uint c = a + b;
        require(c >= a, "ERR_ADD_OVERFLOW");
        return c;
    }

    function bsub(uint a, uint b) internal pure returns (uint) {
        (uint c, bool flag) = bsubSign(a, b);
        require(!flag, "ERR_SUB_UNDERFLOW");
        return c;
    }

    function bsubSign(uint a, uint b) internal pure returns (uint, bool) {
        if (a >= b) {
            return (a - b, false);
        } else {
            return (b - a, true);
        }
    }

    function bmul(uint a, uint b) internal pure returns (uint) {
        uint c0 = a * b;
        require(a == 0 || c0 / a == b, "ERR_MUL_OVERFLOW");
        uint c1 = c0 + (BONE / 2);
        require(c1 >= c0, "ERR_MUL_OVERFLOW");
        uint c2 = c1 / BONE;
        return c2;
    }

    function bdiv(uint a, uint b) internal pure returns (uint) {
        require(b != 0, "ERR_DIV_ZERO");
        uint c0 = a * BONE;
        require(a == 0 || c0 / a == BONE, "ERR_DIV_INTERNAL"); // bmul overflow
        uint c1 = c0 + (b / 2);
        require(c1 >= c0, "ERR_DIV_INTERNAL"); //  badd require
        uint c2 = c1 / b;
        return c2;
    }

    // DSMath.wpow
    function bpowi(uint a, uint n) internal pure returns (uint) {
        uint z = n % 2 != 0 ? a : BONE;

        for (n /= 2; n != 0; n /= 2) {
            a = bmul(a, a);

            if (n % 2 != 0) {
                z = bmul(z, a);
            }
        }
        return z;
    }

    // Compute b^(e.w) by splitting it into (b^e)*(b^0.w).
    // Use `bpowi` for `b^e` and `bpowK` for k iterations
    // of approximation of b^0.w
    function bpow(uint base, uint exp) internal pure returns (uint) {
        require(base >= MIN_BPOW_BASE, "ERR_BPOW_BASE_TOO_LOW");
        require(base <= MAX_BPOW_BASE, "ERR_BPOW_BASE_TOO_HIGH");

        uint whole = bfloor(exp);
        uint remain = bsub(exp, whole);

        uint wholePow = bpowi(base, btoi(whole));

        if (remain == 0) {
            return wholePow;
        }

        uint partialResult = bpowApprox(base, remain, BPOW_PRECISION);
        return bmul(wholePow, partialResult);
    }

    function bpowApprox(
        uint base,
        uint exp,
        uint precision
    ) internal pure returns (uint) {
        // term 0:
        uint a = exp;
        (uint x, bool xneg) = bsubSign(base, BONE);
        uint term = BONE;
        uint sum = term;
        bool negative = false;

        // term(k) = numer / denom
        //         = (product(a - i - 1, i=1-->k) * x^k) / (k!)
        // each iteration, multiply previous term by (a-(k-1)) * x / k
        // continue until term is less than precision
        for (uint i = 1; term >= precision; i++) {
            uint bigK = i * BONE;
            (uint c, bool cneg) = bsubSign(a, bsub(bigK, BONE));
            term = bmul(term, bmul(c, x));
            term = bdiv(term, bigK);
            if (term == 0) break;

            if (xneg) negative = !negative;
            if (cneg) negative = !negative;
            if (negative) {
                sum = bsub(sum, term);
            } else {
                sum = badd(sum, term);
            }
        }

        return sum;
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.6.12;

// Interface declarations

/* solhint-disable func-order */

interface IERC20 {
    // Emitted when the allowance of a spender for an owner is set by a call to approve.
    // Value is the new allowance
    event Approval(address indexed owner, address indexed spender, uint value);

    // Emitted when value tokens are moved from one account (from) to another (to).
    // Note that value may be zero
    event Transfer(address indexed from, address indexed to, uint value);

    // Returns the amount of tokens in existence
    function totalSupply() external view returns (uint);

    // Returns the amount of tokens owned by account
    function balanceOf(address account) external view returns (uint);

    // Returns the decimals of tokens
    function decimals() external view returns (uint8);

    function symbol() external view returns (string memory);

    // Returns the remaining number of tokens that spender will be allowed to spend on behalf of owner
    // through transferFrom. This is zero by default
    // This value changes when approve or transferFrom are called
    function allowance(address owner, address spender) external view returns (uint);

    // Sets amount as the allowance of spender over the caller’s tokens
    // Returns a boolean value indicating whether the operation succeeded
    // Emits an Approval event.
    function approve(address spender, uint amount) external returns (bool);

    // Moves amount tokens from the caller’s account to recipient
    // Returns a boolean value indicating whether the operation succeeded
    // Emits a Transfer event.
    function transfer(address recipient, uint amount) external returns (bool);

    // Moves amount tokens from sender to recipient using the allowance mechanism
    // Amount is then deducted from the caller’s allowance
    // Returns a boolean value indicating whether the operation succeeded
    // Emits a Transfer event
    function transferFrom(
        address sender,
        address recipient,
        uint amount
    ) external returns (bool);
}

pragma solidity 0.6.12;

interface IUniswapOracle {
    function update(address token) external;

    function consult(address token, uint amountIn) external view returns (uint amountOut);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.6.12;

import "./Color.sol";

contract Const is BBronze {
    uint public constant BONE = 10**18;

    uint public constant MIN_BOUND_TOKENS = 1;
    uint public constant MAX_BOUND_TOKENS = 16;

    uint public constant MIN_FEE = BONE / 10**6;
    uint public constant MAX_FEE = BONE / 10;
    uint public constant EXIT_FEE = 0;

    uint public constant MIN_WEIGHT = BONE;
    uint public constant MAX_WEIGHT = BONE * 50;
    uint public constant MAX_TOTAL_WEIGHT = BONE * 50;
    uint public constant MIN_BALANCE = 0;

    uint public constant INIT_POOL_SUPPLY = BONE * 100;

    uint public constant MIN_BPOW_BASE = 1 wei;
    uint public constant MAX_BPOW_BASE = (2 * BONE) - 1 wei;
    uint public constant BPOW_PRECISION = BONE / 10**10;

    uint public constant MAX_IN_RATIO = BONE / 2;
    uint public constant MAX_OUT_RATIO = (BONE / 3) + 1 wei;
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.6.12;

// abstract contract BColor {
//     function getColor()
//         external view virtual
//         returns (bytes32);
// }

contract BBronze {
    function getColor() external pure returns (bytes32) {
        return bytes32("BRONZE");
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 20
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"twapOracle_","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"feed","type":"address"},{"indexed":false,"internalType":"string","name":"symbol","type":"string"}],"name":"FeedSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"NewAdmin","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"asset","type":"address"},{"indexed":false,"internalType":"uint256","name":"previousPriceMantissa","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"requestedPriceMantissa","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newPriceMantissa","type":"uint256"}],"name":"PricePosted","type":"event"},{"inputs":[],"name":"BONE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"BPOW_PRECISION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"EXIT_FEE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"INIT_POOL_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_BOUND_TOKENS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_BPOW_BASE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_FEE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_IN_RATIO","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_OUT_RATIO","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_TOTAL_WEIGHT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_WEIGHT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_BALANCE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_BOUND_TOKENS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_BPOW_BASE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_FEE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_WEIGHT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"assetPrices","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"poolTokens","type":"address[]"},{"internalType":"uint256[]","name":"actualAmountsOut","type":"uint256[]"}],"name":"getAllPrice","outputs":[{"internalType":"uint256","name":"fundAll","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getColor","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"string","name":"symbol","type":"string"}],"name":"getFeed","outputs":[{"internalType":"contract AggregatorV2V3Interface","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenAddress","type":"address"}],"name":"getPrice","outputs":[{"internalType":"uint256","name":"price","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"setAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"uint256","name":"price","type":"uint256"}],"name":"setDirectPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"symbol","type":"string"},{"internalType":"address","name":"feed","type":"address"}],"name":"setFeed","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"twapOracle","outputs":[{"internalType":"contract IUniswapOracle","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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