Contract Source Code:

// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

interface IBasePositionManager {
    function maxGlobalLongSizes(address _token) external view returns (uint256);
    function maxGlobalShortSizes(address _token) external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

import "./IVaultUtils.sol";

interface IVault {
    function isInitialized() external view returns (bool);
    function isSwapEnabled() external view returns (bool);
    function isLeverageEnabled() external view returns (bool);

    function setVaultUtils(IVaultUtils _vaultUtils) external;
    function setError(uint256 _errorCode, string calldata _error) external;

    function router() external view returns (address);
    function usdg() external view returns (address);
    function gov() external view returns (address);

    function whitelistedTokenCount() external view returns (uint256);
    function maxLeverage() external view returns (uint256);

    function minProfitTime() external view returns (uint256);
    function hasDynamicFees() external view returns (bool);
    function fundingInterval() external view returns (uint256);
    function totalTokenWeights() external view returns (uint256);
    function getTargetUsdgAmount(address _token) external view returns (uint256);

    function inManagerMode() external view returns (bool);
    function inPrivateLiquidationMode() external view returns (bool);

    function maxGasPrice() external view returns (uint256);

    function approvedRouters(address _account, address _router) external view returns (bool);
    function isLiquidator(address _account) external view returns (bool);
    function isManager(address _account) external view returns (bool);

    function minProfitBasisPoints(address _token) external view returns (uint256);
    function tokenBalances(address _token) external view returns (uint256);
    function lastFundingTimes(address _token) external view returns (uint256);

    function setMaxLeverage(uint256 _maxLeverage) external;
    function setInManagerMode(bool _inManagerMode) external;
    function setManager(address _manager, bool _isManager) external;
    function setIsSwapEnabled(bool _isSwapEnabled) external;
    function setIsLeverageEnabled(bool _isLeverageEnabled) external;
    function setMaxGasPrice(uint256 _maxGasPrice) external;
    function setUsdgAmount(address _token, uint256 _amount) external;
    function setBufferAmount(address _token, uint256 _amount) external;
    function setMaxGlobalShortSize(address _token, uint256 _amount) external;
    function setInPrivateLiquidationMode(bool _inPrivateLiquidationMode) external;
    function setLiquidator(address _liquidator, bool _isActive) external;

    function setFundingRate(uint256 _fundingInterval, uint256 _fundingRateFactor, uint256 _stableFundingRateFactor) external;

    function setFees(
        uint256 _taxBasisPoints,
        uint256 _stableTaxBasisPoints,
        uint256 _mintBurnFeeBasisPoints,
        uint256 _swapFeeBasisPoints,
        uint256 _stableSwapFeeBasisPoints,
        uint256 _marginFeeBasisPoints,
        uint256 _liquidationFeeUsd,
        uint256 _minProfitTime,
        bool _hasDynamicFees
    ) external;

    function setTokenConfig(
        address _token,
        uint256 _tokenDecimals,
        uint256 _redemptionBps,
        uint256 _minProfitBps,
        uint256 _maxUsdgAmount,
        bool _isStable,
        bool _isShortable
    ) external;

    function setPriceFeed(address _priceFeed) external;
    function withdrawFees(address _token, address _receiver) external returns (uint256);

    function directPoolDeposit(address _token) external;
    function buyUSDG(address _token, address _receiver) external returns (uint256);
    function sellUSDG(address _token, address _receiver) external returns (uint256);
    function swap(address _tokenIn, address _tokenOut, address _receiver) external returns (uint256);
    function increasePosition(address _account, address _collateralToken, address _indexToken, uint256 _sizeDelta, bool _isLong) external;
    function decreasePosition(address _account, address _collateralToken, address _indexToken, uint256 _collateralDelta, uint256 _sizeDelta, bool _isLong, address _receiver) external returns (uint256);
    function validateLiquidation(address _account, address _collateralToken, address _indexToken, bool _isLong, bool _raise) external view returns (uint256, uint256);
    function liquidatePosition(address _account, address _collateralToken, address _indexToken, bool _isLong, address _feeReceiver) external;
    function tokenToUsdMin(address _token, uint256 _tokenAmount) external view returns (uint256);

    function priceFeed() external view returns (address);
    function fundingRateFactor() external view returns (uint256);
    function stableFundingRateFactor() external view returns (uint256);
    function cumulativeFundingRates(address _token) external view returns (uint256);
    function getNextFundingRate(address _token) external view returns (uint256);
    function getFeeBasisPoints(address _token, uint256 _usdgDelta, uint256 _feeBasisPoints, uint256 _taxBasisPoints, bool _increment) external view returns (uint256);

    function liquidationFeeUsd() external view returns (uint256);
    function taxBasisPoints() external view returns (uint256);
    function stableTaxBasisPoints() external view returns (uint256);
    function mintBurnFeeBasisPoints() external view returns (uint256);
    function swapFeeBasisPoints() external view returns (uint256);
    function stableSwapFeeBasisPoints() external view returns (uint256);
    function marginFeeBasisPoints() external view returns (uint256);

    function allWhitelistedTokensLength() external view returns (uint256);
    function allWhitelistedTokens(uint256) external view returns (address);
    function whitelistedTokens(address _token) external view returns (bool);
    function stableTokens(address _token) external view returns (bool);
    function shortableTokens(address _token) external view returns (bool);
    function feeReserves(address _token) external view returns (uint256);
    function globalShortSizes(address _token) external view returns (uint256);
    function globalShortAveragePrices(address _token) external view returns (uint256);
    function maxGlobalShortSizes(address _token) external view returns (uint256);
    function tokenDecimals(address _token) external view returns (uint256);
    function tokenWeights(address _token) external view returns (uint256);
    function guaranteedUsd(address _token) external view returns (uint256);
    function poolAmounts(address _token) external view returns (uint256);
    function bufferAmounts(address _token) external view returns (uint256);
    function reservedAmounts(address _token) external view returns (uint256);
    function usdgAmounts(address _token) external view returns (uint256);
    function maxUsdgAmounts(address _token) external view returns (uint256);
    function getRedemptionAmount(address _token, uint256 _usdgAmount) external view returns (uint256);
    function getMaxPrice(address _token) external view returns (uint256);
    function getMinPrice(address _token) external view returns (uint256);

    function getDelta(address _indexToken, uint256 _size, uint256 _averagePrice, bool _isLong, uint256 _lastIncreasedTime) external view returns (bool, uint256);
    function getPosition(address _account, address _collateralToken, address _indexToken, bool _isLong) external view returns (uint256, uint256, uint256, uint256, uint256, uint256, bool, uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

interface IVaultPriceFeed {
    function adjustmentBasisPoints(address _token) external view returns (uint256);
    function isAdjustmentAdditive(address _token) external view returns (bool);
    function setAdjustment(address _token, bool _isAdditive, uint256 _adjustmentBps) external;
    function setUseV2Pricing(bool _useV2Pricing) external;
    function setIsAmmEnabled(bool _isEnabled) external;
    function setIsSecondaryPriceEnabled(bool _isEnabled) external;
    function setSpreadBasisPoints(address _token, uint256 _spreadBasisPoints) external;
    function setSpreadThresholdBasisPoints(uint256 _spreadThresholdBasisPoints) external;
    function setFavorPrimaryPrice(bool _favorPrimaryPrice) external;
    function setPriceSampleSpace(uint256 _priceSampleSpace) external;
    function setMaxStrictPriceDeviation(uint256 _maxStrictPriceDeviation) external;
    function getPrice(address _token, bool _maximise, bool _includeAmmPrice, bool _useSwapPricing) external view returns (uint256);
    function getAmmPrice(address _token) external view returns (uint256);
    function getLatestPrimaryPrice(address _token) external view returns (uint256);
    function getPrimaryPrice(address _token, bool _maximise) external view returns (uint256);
    function setTokenConfig(
        address _token,
        address _priceFeed,
        uint256 _priceDecimals,
        bool _isStrictStable
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

interface IVaultUtils {
    function updateCumulativeFundingRate(address _collateralToken, address _indexToken) external returns (bool);
    function validateIncreasePosition(address _account, address _collateralToken, address _indexToken, uint256 _sizeDelta, bool _isLong) external view;
    function validateDecreasePosition(address _account, address _collateralToken, address _indexToken, uint256 _collateralDelta, uint256 _sizeDelta, bool _isLong, address _receiver) external view;
    function validateLiquidation(address _account, address _collateralToken, address _indexToken, bool _isLong, bool _raise) external view returns (uint256, uint256);
    function getEntryFundingRate(address _collateralToken, address _indexToken, bool _isLong) external view returns (uint256);
    function getPositionFee(address _account, address _collateralToken, address _indexToken, bool _isLong, uint256 _sizeDelta) external view returns (uint256);
    function getFundingFee(address _account, address _collateralToken, address _indexToken, bool _isLong, uint256 _size, uint256 _entryFundingRate) external view returns (uint256);
    function getBuyUsdgFeeBasisPoints(address _token, uint256 _usdgAmount) external view returns (uint256);
    function getSellUsdgFeeBasisPoints(address _token, uint256 _usdgAmount) external view returns (uint256);
    function getSwapFeeBasisPoints(address _tokenIn, address _tokenOut, uint256 _usdgAmount) external view returns (uint256);
    function getFeeBasisPoints(address _token, uint256 _usdgDelta, uint256 _feeBasisPoints, uint256 _taxBasisPoints, bool _increment) external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

import "../core/interfaces/IVault.sol";
import "../core/interfaces/IVaultPriceFeed.sol";
import "../core/interfaces/IBasePositionManager.sol";

contract VaultReader {
    function getVaultTokenInfoV3(address _vault, address _positionManager, address _weth, uint256 _usdgAmount, address[] memory _tokens) public view returns (uint256[] memory) {
        uint256 propsLength = 14;

        IVault vault = IVault(_vault);
        IVaultPriceFeed priceFeed = IVaultPriceFeed(vault.priceFeed());
        IBasePositionManager positionManager = IBasePositionManager(_positionManager);

        uint256[] memory amounts = new uint256[](_tokens.length * propsLength);
        for (uint256 i = 0; i < _tokens.length; i++) {
            address token = _tokens[i];
            if (token == address(0)) {
                token = _weth;
            }

            amounts[i * propsLength] = vault.poolAmounts(token);
            amounts[i * propsLength + 1] = vault.reservedAmounts(token);
            amounts[i * propsLength + 2] = vault.usdgAmounts(token);
            amounts[i * propsLength + 3] = vault.getRedemptionAmount(token, _usdgAmount);
            amounts[i * propsLength + 4] = vault.tokenWeights(token);
            amounts[i * propsLength + 5] = vault.bufferAmounts(token);
            amounts[i * propsLength + 6] = vault.maxUsdgAmounts(token);
            amounts[i * propsLength + 7] = vault.globalShortSizes(token);
            amounts[i * propsLength + 8] = positionManager.maxGlobalShortSizes(token);
            amounts[i * propsLength + 9] = vault.getMinPrice(token);
            amounts[i * propsLength + 10] = vault.getMaxPrice(token);
            amounts[i * propsLength + 11] = vault.guaranteedUsd(token);
            amounts[i * propsLength + 12] = priceFeed.getPrimaryPrice(token, false);
            amounts[i * propsLength + 13] = priceFeed.getPrimaryPrice(token, true);
        }

        return amounts;
    }

    function getVaultTokenInfoV4(address _vault, address _positionManager, address _weth, uint256 _usdgAmount, address[] memory _tokens) public view returns (uint256[] memory) {
        uint256 propsLength = 15;

        IVault vault = IVault(_vault);
        IVaultPriceFeed priceFeed = IVaultPriceFeed(vault.priceFeed());
        IBasePositionManager positionManager = IBasePositionManager(_positionManager);

        uint256[] memory amounts = new uint256[](_tokens.length * propsLength);
        for (uint256 i = 0; i < _tokens.length; i++) {
            address token = _tokens[i];
            if (token == address(0)) {
                token = _weth;
            }

            amounts[i * propsLength] = vault.poolAmounts(token);
            amounts[i * propsLength + 1] = vault.reservedAmounts(token);
            amounts[i * propsLength + 2] = vault.usdgAmounts(token);
            amounts[i * propsLength + 3] = vault.getRedemptionAmount(token, _usdgAmount);
            amounts[i * propsLength + 4] = vault.tokenWeights(token);
            amounts[i * propsLength + 5] = vault.bufferAmounts(token);
            amounts[i * propsLength + 6] = vault.maxUsdgAmounts(token);
            amounts[i * propsLength + 7] = vault.globalShortSizes(token);
            amounts[i * propsLength + 8] = positionManager.maxGlobalShortSizes(token);
            amounts[i * propsLength + 9] = positionManager.maxGlobalLongSizes(token);
            amounts[i * propsLength + 10] = vault.getMinPrice(token);
            amounts[i * propsLength + 11] = vault.getMaxPrice(token);
            amounts[i * propsLength + 12] = vault.guaranteedUsd(token);
            amounts[i * propsLength + 13] = priceFeed.getPrimaryPrice(token, false);
            amounts[i * propsLength + 14] = priceFeed.getPrimaryPrice(token, true);
        }

        return amounts;
    }
}