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// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.28;

import {IERC20Metadata} from "openzeppelin5/token/ERC20/extensions/IERC20Metadata.sol";
import {Clones} from "openzeppelin5/proxy/Clones.sol";
import {AggregatorV3Interface} from "chainlink/v0.8/interfaces/AggregatorV3Interface.sol";

import {OracleFactory} from "../_common/OracleFactory.sol";
import {IChainlinkV3Oracle} from "../interfaces/IChainlinkV3Oracle.sol";
import {ChainlinkV3Oracle} from "../chainlinkV3/ChainlinkV3Oracle.sol";
import {ChainlinkV3OracleConfig} from "../chainlinkV3/ChainlinkV3OracleConfig.sol";
import {OracleNormalization} from "../lib/OracleNormalization.sol";

contract ChainlinkV3OracleFactory is OracleFactory {
    constructor() OracleFactory(address(new ChainlinkV3Oracle())) {
        // noting to configure
    }

    function create(IChainlinkV3Oracle.ChainlinkV3DeploymentConfig memory _config)
        external
        virtual
        returns (ChainlinkV3Oracle oracle)
    {
        bytes32 id = hashConfig(_config);
        ChainlinkV3OracleConfig oracleConfig = ChainlinkV3OracleConfig(getConfigAddress[id]);

        if (address(oracleConfig) != address(0)) {
            // config already exists, so oracle exists as well
            return ChainlinkV3Oracle(getOracleAddress[address(oracleConfig)]);
        }

        verifyConfig(_config);
        verifyHeartbeat(_config);

        oracleConfig = new ChainlinkV3OracleConfig(_config);
        oracle = ChainlinkV3Oracle(Clones.clone(ORACLE_IMPLEMENTATION));

        _saveOracle(address(oracle), address(oracleConfig), id);

        oracle.initialize(oracleConfig);
    }

    function hashConfig(IChainlinkV3Oracle.ChainlinkV3DeploymentConfig memory _config)
        public
        virtual
        view
        returns (bytes32 configId)
    {
        configId = keccak256(abi.encode(_config));
    }

    function verifyConfig(IChainlinkV3Oracle.ChainlinkV3DeploymentConfig memory _config)
        public
        view
        virtual
        returns (uint256 secondaryPriceDecimals)
    {
        if (address(_config.quoteToken) == address(0)) revert IChainlinkV3Oracle.AddressZero();
        if (address(_config.baseToken) == address(0)) revert IChainlinkV3Oracle.AddressZero();
        if (address(_config.quoteToken) == address(_config.baseToken)) revert IChainlinkV3Oracle.TokensAreTheSame();

        if (address(_config.primaryAggregator) == address(0)) revert IChainlinkV3Oracle.AddressZero();

        if (address(_config.primaryAggregator) == address(_config.secondaryAggregator)) {
            revert IChainlinkV3Oracle.AggregatorsAreTheSame();
        }

        if (address(_config.secondaryAggregator) != address(0)) {
            secondaryPriceDecimals = _config.secondaryAggregator.decimals();
        }

        if (_config.normalizationDivider > 1e36) revert IChainlinkV3Oracle.HugeDivider();
        if (_config.normalizationMultiplier > 1e36) revert IChainlinkV3Oracle.HugeMultiplier();

        if (_config.normalizationDivider == 0 && _config.normalizationMultiplier == 0) {
            revert IChainlinkV3Oracle.MultiplierAndDividerZero();
        }
    }

    /// @dev heartbeat restrictions are arbitrary
    /// @notice Chainlink's heartbeat is "always" less than a day, except when they late
    function verifyHeartbeat(IChainlinkV3Oracle.ChainlinkV3DeploymentConfig memory _config) public pure virtual {
        if (_config.primaryHeartbeat < 30 seconds || _config.primaryHeartbeat > 2 days) {
            revert IChainlinkV3Oracle.InvalidHeartbeat();
        }

        if (address(_config.secondaryAggregator) == address(0)) {
            if (_config.secondaryHeartbeat != 0) revert IChainlinkV3Oracle.InvalidEthHeartbeat();
        } else {
            if (_config.secondaryHeartbeat < 30 seconds || _config.secondaryHeartbeat > 2 days) {
                revert IChainlinkV3Oracle.InvalidEthHeartbeat();
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC-20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/Clones.sol)

pragma solidity ^0.8.20;

import {Errors} from "../utils/Errors.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[ERC-1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 */
library Clones {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        return clone(implementation, 0);
    }

    /**
     * @dev Same as {xref-Clones-clone-address-}[clone], but with a `value` parameter to send native currency
     * to the new contract.
     *
     * NOTE: Using a non-zero value at creation will require the contract using this function (e.g. a factory)
     * to always have enough balance for new deployments. Consider exposing this function under a payable method.
     */
    function clone(address implementation, uint256 value) internal returns (address instance) {
        if (address(this).balance < value) {
            revert Errors.InsufficientBalance(address(this).balance, value);
        }
        /// @solidity memory-safe-assembly
        assembly {
            // Stores the bytecode after address
            mstore(0x20, 0x5af43d82803e903d91602b57fd5bf3)
            // implementation address
            mstore(0x11, implementation)
            // Packs the first 3 bytes of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0x88, implementation), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            instance := create(value, 0x09, 0x37)
        }
        if (instance == address(0)) {
            revert Errors.FailedDeployment();
        }
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        return cloneDeterministic(implementation, salt, 0);
    }

    /**
     * @dev Same as {xref-Clones-cloneDeterministic-address-bytes32-}[cloneDeterministic], but with
     * a `value` parameter to send native currency to the new contract.
     *
     * NOTE: Using a non-zero value at creation will require the contract using this function (e.g. a factory)
     * to always have enough balance for new deployments. Consider exposing this function under a payable method.
     */
    function cloneDeterministic(
        address implementation,
        bytes32 salt,
        uint256 value
    ) internal returns (address instance) {
        if (address(this).balance < value) {
            revert Errors.InsufficientBalance(address(this).balance, value);
        }
        /// @solidity memory-safe-assembly
        assembly {
            // Stores the bytecode after address
            mstore(0x20, 0x5af43d82803e903d91602b57fd5bf3)
            // implementation address
            mstore(0x11, implementation)
            // Packs the first 3 bytes of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0x88, implementation), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            instance := create2(value, 0x09, 0x37, salt)
        }
        if (instance == address(0)) {
            revert Errors.FailedDeployment();
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(add(ptr, 0x38), deployer)
            mstore(add(ptr, 0x24), 0x5af43d82803e903d91602b57fd5bf3ff)
            mstore(add(ptr, 0x14), implementation)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73)
            mstore(add(ptr, 0x58), salt)
            mstore(add(ptr, 0x78), keccak256(add(ptr, 0x0c), 0x37))
            predicted := keccak256(add(ptr, 0x43), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt
    ) internal view returns (address predicted) {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface AggregatorV3Interface {
  function decimals() external view returns (uint8);

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

  function version() external view returns (uint256);

  function getRoundData(
    uint80 _roundId
  ) external view returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);

  function latestRoundData()
    external
    view
    returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.7.6 <0.9.0;


abstract contract OracleFactory {
    /// @dev implementation that will be cloned
    address public immutable ORACLE_IMPLEMENTATION; // solhint-disable-line var-name-mixedcase

    /// @dev hash(config) => oracle contract
    /// oracle ID is determine by initial configuration, the logic is the same, so config is the only difference
    /// that's why we can use it as ID, at the same time we can detect duplicated and save gas by reusing same config
    /// multiple times
    mapping(bytes32 => address) public getConfigAddress;

    /// @dev config address => oracle address
    mapping(address => address) public getOracleAddress;

    /// @dev config ID and config address should be easily accessible directly from oracle contract
    event NewOracle(address indexed oracle);

    constructor(address _oracleImplementation) {
        if (_oracleImplementation == address(0)) revert("ZeroAddress");

        ORACLE_IMPLEMENTATION = _oracleImplementation;
    }

    /// @dev execute this method from target factory, to save ID and update mappings
    /// @param _newOracle new oracle address
    /// @param _newConfig oracle config address
    /// @param _configId oracle config ID, hash(config)
    function _saveOracle(address _newOracle, address _newConfig, bytes32 _configId) internal virtual {
        if (getConfigAddress[_configId] != address(0)) revert("ConfigAlreadyExist");

        getConfigAddress[_configId] = _newConfig;
        // config and oracle is 1:1 so no need to check if oracle exists
        getOracleAddress[_newConfig] = _newOracle;

        emit NewOracle(_newOracle);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0;

import {IERC20Metadata} from "openzeppelin5/token/ERC20/extensions/IERC20Metadata.sol";
import {AggregatorV3Interface} from "chainlink/v0.8/interfaces/AggregatorV3Interface.sol";
import {ChainlinkV3OracleConfig} from "../chainlinkV3/ChainlinkV3OracleConfig.sol";

interface IChainlinkV3Oracle {
    /// @dev config based on which new oracle will be deployed
    /// @notice there is no way to check if aggregators match tokens, so it is users job to verify config.
    /// @param primaryAggregator used to read price from chainlink, if it can not provide price in quote token,
    /// then you have to setup secondary one that will do the job
    /// @param secondaryAggregator if set, it is used translate primary price into quote price eg:
    /// primary price is ABC/USD and secondary is ETH/USD, then result will be price in ABC/ETH
    /// @param baseToken base token address, it must have decimals() method available
    /// @param quoteToken quote toke address, it must have decimals() method available
    /// @param primaryHeartbeat heartbeat of primary price
    /// @param secondaryHeartbeat heartbeat of secondary price
    /// @param normalizationDivider divider that will be used in oracle to normalize price
    /// @param normalizationMultiplier multiplier that will be used in oracle to normalize price
    /// @param invertSecondPrice in case we using second price, this flag will tell us if we need to 1/secondPrice
    struct ChainlinkV3DeploymentConfig {
        IERC20Metadata baseToken;
        IERC20Metadata quoteToken;
        AggregatorV3Interface primaryAggregator;
        uint32 primaryHeartbeat;
        AggregatorV3Interface secondaryAggregator;
        uint32 secondaryHeartbeat;
        uint256 normalizationDivider;
        uint256 normalizationMultiplier;
        bool invertSecondPrice;
    }

    /// @dev config based on which new oracle will be deployed
    /// @notice there is no way to check if aggregators match tokens, so it is users job to verify config.
    /// @param primaryAggregator used to read price from chainlink, if it can not provide price in quote token,
    /// then you have to setup secondary one that will do the job
    /// @param secondaryAggregator if set, it is used translate primary price into quote price eg:
    /// primary price is ABC/USD and secondary is ETH/USD, then result will be price in ABC/ETH
    /// @param baseToken base token address, it must have decimals() method available
    /// @param quoteToken quote toke address, it must have decimals() method available
    /// @param primaryHeartbeat heartbeat of primary price
    /// @param secondaryHeartbeat heartbeat of secondary price
    /// @param invertSecondPrice in case we using second price, this flag will tell us if we need to 1/secondPrice
    struct ChainlinkV3Config {
        AggregatorV3Interface primaryAggregator;
        AggregatorV3Interface secondaryAggregator;
        uint256 primaryHeartbeat;
        uint256 secondaryHeartbeat;
        uint256 normalizationDivider;
        uint256 normalizationMultiplier;
        IERC20Metadata baseToken;
        IERC20Metadata quoteToken;
        bool convertToQuote;
        bool invertSecondPrice;
    }

    event ChainlinkV3ConfigDeployed(ChainlinkV3OracleConfig configAddress);

    event NewAggregator(address indexed asset, AggregatorV3Interface indexed aggregator, bool convertToQuote);
    event NewHeartbeat(address indexed asset, uint256 heartbeat);
    event NewQuoteAggregatorHeartbeat(uint256 heartbeat);
    event AggregatorDisabled(address indexed asset, AggregatorV3Interface indexed aggregator);

    error AddressZero();
    error InvalidPrice();
    error ZeroQuote();
    error InvalidSecondPrice();
    error BaseAmountOverflow();
    error TokensAreTheSame();
    error AggregatorsAreTheSame();

    error QuoteTokenNotMatchEth();
    error InvalidEthAggregatorDecimals();
    error InvalidHeartbeat();
    error InvalidEthHeartbeat();

    error AssetNotSupported();
    error HugeDivider();
    error HugeMultiplier();
    error MultiplierAndDividerZero();
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.28;

import {Initializable} from  "openzeppelin5-upgradeable/proxy/utils/Initializable.sol";
import {IERC20Metadata} from "openzeppelin5/token/ERC20/extensions/IERC20Metadata.sol";
import {AggregatorV3Interface} from "chainlink/v0.8/interfaces/AggregatorV3Interface.sol";
import {ISiloOracle} from "silo-core/contracts/interfaces/ISiloOracle.sol";

import {OracleNormalization} from "../lib/OracleNormalization.sol";
import {ChainlinkV3OracleConfig} from "./ChainlinkV3OracleConfig.sol";
import {IChainlinkV3Oracle} from "../interfaces/IChainlinkV3Oracle.sol";

contract ChainlinkV3Oracle is IChainlinkV3Oracle, ISiloOracle, Initializable {
    ChainlinkV3OracleConfig public oracleConfig;

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    /// @notice validation of config is checked in factory, therefore you should not deploy and initialize directly
    /// use factory always.
    function initialize(ChainlinkV3OracleConfig _configAddress) external virtual initializer {
        oracleConfig = _configAddress;
        emit ChainlinkV3ConfigDeployed(_configAddress);
    }

    /// @inheritdoc ISiloOracle
    function quote(uint256 _baseAmount, address _baseToken) external view virtual returns (uint256 quoteAmount) {
        ChainlinkV3Config memory config = oracleConfig.getConfig();

        if (_baseToken != address(config.baseToken)) revert AssetNotSupported();
        if (_baseAmount > type(uint128).max) revert BaseAmountOverflow();

        (bool success, uint256 price) = _getAggregatorPrice(config.primaryAggregator, config.primaryHeartbeat);
        if (!success) revert InvalidPrice();

        if (!config.convertToQuote) {
            quoteAmount = OracleNormalization.normalizePrice(
                _baseAmount, price, config.normalizationDivider, config.normalizationMultiplier
            );

            if (quoteAmount == 0) revert ZeroQuote();
            return quoteAmount;
        }

        (
            bool secondSuccess,
            uint256 secondPrice
        ) = _getAggregatorPrice(config.secondaryAggregator, config.secondaryHeartbeat);

        if (!secondSuccess) revert InvalidSecondPrice();

        quoteAmount = OracleNormalization.normalizePrices(
            _baseAmount,
            price,
            secondPrice,
            config.normalizationDivider,
            config.normalizationMultiplier,
            config.invertSecondPrice
        );

        if (quoteAmount == 0) revert ZeroQuote();
        return quoteAmount;
    }

    /// @dev Returns price directly from aggregator, this method is mostly for debug purposes
    function getAggregatorPrice(bool _primary) external view virtual returns (bool success, uint256 price) {
        IChainlinkV3Oracle.ChainlinkV3Config memory config = oracleConfig.getConfig();

        return _primary
            ? _getAggregatorPrice(config.primaryAggregator, config.primaryHeartbeat)
            : _getAggregatorPrice(config.secondaryAggregator, config.secondaryHeartbeat);
    }

    /// @inheritdoc ISiloOracle
    function quoteToken() external view virtual returns (address) {
        IChainlinkV3Oracle.ChainlinkV3Config memory config = oracleConfig.getConfig();
        return address(config.quoteToken);
    }

    function beforeQuote(address) external pure virtual override {
        // nothing to execute
    }

    function _getAggregatorPrice(AggregatorV3Interface _aggregator, uint256 _heartbeat)
        internal
        view
        virtual
        returns (bool success, uint256 price)
    {
        (
            /*uint80 roundID*/,
            int256 aggregatorPrice,
            /*uint256 startedAt*/,
            uint256 priceTimestamp,
            /*uint80 answeredInRound*/
        ) = _aggregator.latestRoundData();

        // price must be updated at least once every _heartbeat, otherwise something is wrong
        uint256 oldestAcceptedPriceTimestamp;
        // block.timestamp is more than HEARTBEAT, so we can not underflow
        unchecked { oldestAcceptedPriceTimestamp = block.timestamp - _heartbeat; }

        if (aggregatorPrice > 0 && priceTimestamp > oldestAcceptedPriceTimestamp) {
            return (true, uint256(aggregatorPrice));
        }

        return (false, 0);
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.28;

import {IERC20Metadata} from "openzeppelin5/token/ERC20/extensions/IERC20Metadata.sol";
import {AggregatorV3Interface} from "chainlink/v0.8/interfaces/AggregatorV3Interface.sol";
import {ISiloOracle} from "silo-core/contracts/interfaces/ISiloOracle.sol";
import {IChainlinkV3Oracle} from "../interfaces/IChainlinkV3Oracle.sol";
import {Layer1OracleConfig} from "../_common/Layer1OracleConfig.sol";

contract ChainlinkV3OracleConfig is Layer1OracleConfig {
    /// @dev Chainlink aggregator
    AggregatorV3Interface internal immutable _AGGREGATOR; // solhint-disable-line var-name-mixedcase

    /// @dev secondary Chainlink aggregator to convert price to quote
    AggregatorV3Interface internal immutable _SECONDARY_AGGREGATOR; // solhint-disable-line var-name-mixedcase

    /// @dev Threshold used to determine if the price returned by the _SECONDARY_AGGREGATOR is valid
    uint256 internal immutable _SECONDARY_HEARTBEAT; // solhint-disable-line var-name-mixedcase

    /// @dev this can be set to true to convert primary price into price denominated in quote
    /// assuming that both AGGREGATORS providing price in the same token
    bool internal immutable _CONVERT_TO_QUOTE; // solhint-disable-line var-name-mixedcase

    /// @dev If TRUE price will be 1/price
    bool internal immutable _INVERT_SECONDARY_PRICE; // solhint-disable-line var-name-mixedcase

    /// @dev all verification should be done by factory
    constructor(IChainlinkV3Oracle.ChainlinkV3DeploymentConfig memory _config)
        Layer1OracleConfig(
            _config.baseToken,
            _config.quoteToken,
            _config.primaryHeartbeat,
            _config.normalizationDivider,
            _config.normalizationMultiplier
        )
    {
        _AGGREGATOR = _config.primaryAggregator;
        _SECONDARY_AGGREGATOR = _config.secondaryAggregator;
        _SECONDARY_HEARTBEAT = _config.secondaryHeartbeat;
        _CONVERT_TO_QUOTE = address(_config.secondaryAggregator) != address(0);
        _INVERT_SECONDARY_PRICE = _config.invertSecondPrice;
    }

    function getConfig() external view virtual returns (IChainlinkV3Oracle.ChainlinkV3Config memory config) {
        config.primaryAggregator = _AGGREGATOR;
        config.secondaryAggregator = _SECONDARY_AGGREGATOR;
        config.primaryHeartbeat = _HEARTBEAT;
        config.secondaryHeartbeat = _SECONDARY_HEARTBEAT;
        config.normalizationDivider = _DECIMALS_NORMALIZATION_DIVIDER;
        config.normalizationMultiplier = _DECIMALS_NORMALIZATION_MULTIPLIER;
        config.baseToken = _BASE_TOKEN;
        config.quoteToken = _QUOTE_TOKEN;
        config.convertToQuote = _CONVERT_TO_QUOTE;
        config.invertSecondPrice = _INVERT_SECONDARY_PRICE;
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.20;

import {IERC20Metadata} from "openzeppelin5/token/ERC20/extensions/IERC20Metadata.sol";
import {TokenHelper} from "silo-core/contracts/lib/TokenHelper.sol";

/// @notice please read carefully unchecked comments, there are some requirements tht must be met in order to not
/// over/under flow
/// @dev Rounding error policy.
/// We're always rounding down by using build-in solidity way for division.
///
/// During normalization we're executing division by `_normalizationDivider` (unless there is multiplicator)
/// and `_secondPrice` (in case second price exist). You can expect rounding errors to be in exclusive range of (0, 1)
/// when doing division. What does it means? This means, that you can be short by up to 1 wei on result.
/// eg. when normalising 12_345 (value with 3 decimals) to 2 decimals representation you lose last digit and end result
/// will be 12_34.
/// What are consequences for protocol?
/// Eg. if 987 of tokens A is worth 12.34 tokens B (after normalization), by losing 0.005 we made tokens A worth a bit
/// more than they really are. If we would round up, then tokens A would be a bit less expensive.
/// Keep in mind we are talking tiny values. There is no argument that can tell which approach is correct.
/// Considering that prices themselves are changing constantly (if you think about it, they are just random numbers
/// close to previous value) and even TWAP price can be manipulated up to some level, if we compare this to rounding
/// error, the rounding error has no meaning at all.
/// Most important part is: how are we using prices in Silo and how rounding error affects the system?
/// We're using prices to calculate LTV. We're deciding how much of token you can borrow but once you borrow you need to
/// repay that amount (plus interest). Price of the token has no influence on how much you repay.
/// Price change by 1 wei can also trigger liquidation, but it will be like switching from eg. 9,99999999999% => 10%.
/// Summing up, rounding error can affect:
/// - max amount of tokens one can borrow
/// - when liquidation happen
/// nn both cases we are talking about 1 wei of difference and this really does not matter to the protocol.
/// It cannot make user to repay less than he borrow and it cannot affect any other operations like deposit,
/// withdraw in a way, that you get less/more tokens.
/// That said, choosing rounding policy is arbitrary decision and our decision is to use default rounding down.
library OracleNormalization {
    error Overflow();

    /// @notice if you call normalizePrice directly you can create overflow
    /// @param _baseAmount amount of base token (can not be higher than uint128!)
    /// @param _assetPrice price returned by oracle (can not be higher than uint128!)
    /// @param _normalizationDivider constant that allows to translate output price to expected decimals
    /// @param _normalizationMultiplier constant that allows to translate output price to expected decimals
    /// @return assetPrice uint256 18 decimals price
    function normalizePrice(
        uint256 _baseAmount,
        uint256 _assetPrice,
        uint256 _normalizationDivider,
        uint256 _normalizationMultiplier
    )
        internal
        pure
        returns (uint256 assetPrice)
    {
        if (_normalizationMultiplier == 0) {
            // `_baseAmount * _assetPrice` is safe because we multiply uint128 * uint128
            // - _baseAmount is checked in `_quote`
            // - _assetPrice is uint128
            // div is safe
            unchecked { return _baseAmount * _assetPrice / _normalizationDivider; }
        }

        uint256 mul;
        // this is save, check explanation above
        unchecked { mul = _baseAmount * _assetPrice; }

        return mul * _normalizationMultiplier;
    }

    /// @notice if you call normalizePrice directly you can create overflow
    /// @param _baseAmount amount of base token (can not be higher than uint128!)
    /// @param _assetPrice price returned by oracle (can not be higher than uint128!)
    /// @param _secondPrice price of quote token denominated in same token as _assetPrice
    /// (can not be higher than uint128!)
    /// @param _normalizationDivider constant that allows to translate output price to expected decimals
    /// @param _normalizationMultiplier constant that allows to translate output price to expected decimals
    /// @param _invertSecondPrice if TRUE we have to 1/secondPrice
    /// @return assetPrice uint256 18 decimals price
    function normalizePrices(
        uint256 _baseAmount,
        uint256 _assetPrice,
        uint256 _secondPrice,
        uint256 _normalizationDivider,
        uint256 _normalizationMultiplier,
        bool _invertSecondPrice
    )
        internal
        pure
        returns (uint256 assetPrice)
    {
        if (_normalizationMultiplier == 0) {
            // `_baseAmount * _assetPrice` is safe because we multiply uint128 * uint128
            // - _baseAmount is checked in `_quote`, that checks covers `*1e8`, so we sure it is up to uint128
            // - _assetPrice is uint128
            // however if you call normalizePrice directly (because it is open method) you can create overflow
            // div is safe
            unchecked {
                assetPrice = _baseAmount * _assetPrice;
                assetPrice = _invertSecondPrice ? assetPrice / _secondPrice : assetPrice * _secondPrice;
                assetPrice = assetPrice / _normalizationDivider;
            }

            return assetPrice;
        }

        // this is save, check explanation above
        unchecked { assetPrice = _baseAmount * _assetPrice; }
        assetPrice = assetPrice * _normalizationMultiplier;

        return _invertSecondPrice ? assetPrice / _secondPrice : assetPrice * _secondPrice;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev 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, uint256 value);

    /**
     * @dev 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, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev 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 (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

/**
 * @dev Collection of common custom errors used in multiple contracts
 *
 * IMPORTANT: Backwards compatibility is not guaranteed in future versions of the library.
 * It is recommended to avoid relying on the error API for critical functionality.
 */
library Errors {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error InsufficientBalance(uint256 balance, uint256 needed);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedCall();

    /**
     * @dev The deployment failed.
     */
    error FailedDeployment();
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.20;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Storage of the initializable contract.
     *
     * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
     * when using with upgradeable contracts.
     *
     * @custom:storage-location erc7201:openzeppelin.storage.Initializable
     */
    struct InitializableStorage {
        /**
         * @dev Indicates that the contract has been initialized.
         */
        uint64 _initialized;
        /**
         * @dev Indicates that the contract is in the process of being initialized.
         */
        bool _initializing;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;

    /**
     * @dev The contract is already initialized.
     */
    error InvalidInitialization();

    /**
     * @dev The contract is not initializing.
     */
    error NotInitializing();

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint64 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
     * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
     * production.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        // Cache values to avoid duplicated sloads
        bool isTopLevelCall = !$._initializing;
        uint64 initialized = $._initialized;

        // Allowed calls:
        // - initialSetup: the contract is not in the initializing state and no previous version was
        //                 initialized
        // - construction: the contract is initialized at version 1 (no reininitialization) and the
        //                 current contract is just being deployed
        bool initialSetup = initialized == 0 && isTopLevelCall;
        bool construction = initialized == 1 && address(this).code.length == 0;

        if (!initialSetup && !construction) {
            revert InvalidInitialization();
        }
        $._initialized = 1;
        if (isTopLevelCall) {
            $._initializing = true;
        }
        _;
        if (isTopLevelCall) {
            $._initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint64 version) {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing || $._initialized >= version) {
            revert InvalidInitialization();
        }
        $._initialized = version;
        $._initializing = true;
        _;
        $._initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        _checkInitializing();
        _;
    }

    /**
     * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
     */
    function _checkInitializing() internal view virtual {
        if (!_isInitializing()) {
            revert NotInitializing();
        }
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing) {
            revert InvalidInitialization();
        }
        if ($._initialized != type(uint64).max) {
            $._initialized = type(uint64).max;
            emit Initialized(type(uint64).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint64) {
        return _getInitializableStorage()._initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _getInitializableStorage()._initializing;
    }

    /**
     * @dev Returns a pointer to the storage namespace.
     */
    // solhint-disable-next-line var-name-mixedcase
    function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
        assembly {
            $.slot := INITIALIZABLE_STORAGE
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

interface ISiloOracle {
    /// @notice Hook function to call before `quote` function reads price
    /// @dev This hook function can be used to change state right before the price is read. For example it can be used
    ///      for curve read only reentrancy protection. In majority of implementations this will be an empty function.
    ///      WARNING: reverts are propagated to Silo so if `beforeQuote` reverts, Silo reverts as well.
    /// @param _baseToken Address of priced token
    function beforeQuote(address _baseToken) external;

    /// @return quoteAmount Returns quote price for _baseAmount of _baseToken
    /// @param _baseAmount Amount of priced token
    /// @param _baseToken Address of priced token
    function quote(uint256 _baseAmount, address _baseToken) external view returns (uint256 quoteAmount);

    /// @return address of token in which quote (price) is denominated
    function quoteToken() external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.28;

import {IERC20Metadata} from "openzeppelin5/token/ERC20/extensions/IERC20Metadata.sol";

/// @notice to keep config contract size low (this is the one that will be deployed each time)
/// factory contract take over verification. You should not deploy or use config that was not created by factory.
/// @dev This is common config for Layer1 oracles
abstract contract Layer1OracleConfig {
    /// @dev price must be updated at least once every `_HEARTBEAT` seconds, otherwise something is wrong
    uint256 internal immutable _HEARTBEAT; // solhint-disable-line var-name-mixedcase

    /// @dev constant used for normalising price
    uint256 internal immutable _DECIMALS_NORMALIZATION_DIVIDER; // solhint-disable-line var-name-mixedcase

    /// @dev constant used for normalising price
    uint256 internal immutable _DECIMALS_NORMALIZATION_MULTIPLIER; // solhint-disable-line var-name-mixedcase

    IERC20Metadata internal immutable _BASE_TOKEN; // solhint-disable-line var-name-mixedcase
    IERC20Metadata internal immutable _QUOTE_TOKEN; // solhint-disable-line var-name-mixedcase

    /// @dev all verification should be done by factory
    constructor(
        IERC20Metadata _baseToken,
        IERC20Metadata _quoteToken,
        uint256 _heartbeat,
        uint256 _normalizationDivider,
        uint256 _normalizationMultiplier
    ) {
        _DECIMALS_NORMALIZATION_DIVIDER = _normalizationDivider;
        _DECIMALS_NORMALIZATION_MULTIPLIER = _normalizationMultiplier;

        _BASE_TOKEN = _baseToken;
        _QUOTE_TOKEN = _quoteToken;

        _HEARTBEAT = _heartbeat;
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;

import {IERC20Metadata} from "openzeppelin5/token/ERC20/extensions/IERC20Metadata.sol";

import {IsContract} from "./IsContract.sol";

library TokenHelper {
    uint256 private constant _BYTES32_SIZE = 32;

    error TokenIsNotAContract();

    function assertAndGetDecimals(address _token) internal view returns (uint256) {
        (bool hasMetadata, bytes memory data) =
            _tokenMetadataCall(_token, abi.encodeCall(IERC20Metadata.decimals, ()));

        // decimals() is optional in the ERC20 standard, so if metadata is not accessible
        // we assume there are no decimals and use 0.
        if (!hasMetadata) {
            return 0;
        }

        return abi.decode(data, (uint8));
    }

    /// @dev Returns the symbol for the provided ERC20 token.
    /// An empty string is returned if the call to the token didn't succeed.
    /// @param _token address of the token to get the symbol for
    /// @return assetSymbol the token symbol
    function symbol(address _token) internal view returns (string memory assetSymbol) {
        (bool hasMetadata, bytes memory data) =
            _tokenMetadataCall(_token, abi.encodeCall(IERC20Metadata.symbol, ()));

        if (!hasMetadata || data.length == 0) {
            return "?";
        } else if (data.length == _BYTES32_SIZE) {
            return string(removeZeros(data));
        } else {
            return abi.decode(data, (string));
        }
    }

    /// @dev Removes bytes with value equal to 0 from the provided byte array.
    /// @param _data byte array from which to remove zeroes
    /// @return result byte array with zeroes removed
    function removeZeros(bytes memory _data) internal pure returns (bytes memory result) {
        uint256 n = _data.length;

        for (uint256 i; i < n; i++) {
            if (_data[i] == 0) continue;

            result = abi.encodePacked(result, _data[i]);
        }
    }

    /// @dev Performs a staticcall to the token to get its metadata (symbol, decimals, name)
    function _tokenMetadataCall(address _token, bytes memory _data) private view returns (bool, bytes memory) {
        // We need to do this before the call, otherwise the call will succeed even for EOAs
        require(IsContract.isContract(_token), TokenIsNotAContract());

        (bool success, bytes memory result) = _token.staticcall(_data);

        // If the call reverted we assume the token doesn't follow the metadata extension
        if (!success) {
            return (false, "");
        }

        return (true, result);
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.24;

library IsContract {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address _account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return _account.code.length > 0;
    }
}

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    "@ensdomains/=node_modules/@ensdomains/",
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    "@openzeppelin/contracts/=gitmodules/openzeppelin-contracts-5/contracts/",
    "@solidity-parser/=node_modules/@solidity-parser/",
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    "aave/=gitmodules/aave/",
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  "optimizer": {
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    "runs": 200
  },
  "metadata": {
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    "bytecodeHash": "ipfs",
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  },
  "outputSelection": {
    "*": {
      "*": [
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  "evmVersion": "cancun",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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AggregatorV3Interface","name":"secondaryAggregator","type":"address"},{"internalType":"uint32","name":"secondaryHeartbeat","type":"uint32"},{"internalType":"uint256","name":"normalizationDivider","type":"uint256"},{"internalType":"uint256","name":"normalizationMultiplier","type":"uint256"},{"internalType":"bool","name":"invertSecondPrice","type":"bool"}],"internalType":"struct IChainlinkV3Oracle.ChainlinkV3DeploymentConfig","name":"_config","type":"tuple"}],"name":"verifyConfig","outputs":[{"internalType":"uint256","name":"secondaryPriceDecimals","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"contract IERC20Metadata","name":"baseToken","type":"address"},{"internalType":"contract IERC20Metadata","name":"quoteToken","type":"address"},{"internalType":"contract AggregatorV3Interface","name":"primaryAggregator","type":"address"},{"internalType":"uint32","name":"primaryHeartbeat","type":"uint32"},{"internalType":"contract AggregatorV3Interface","name":"secondaryAggregator","type":"address"},{"internalType":"uint32","name":"secondaryHeartbeat","type":"uint32"},{"internalType":"uint256","name":"normalizationDivider","type":"uint256"},{"internalType":"uint256","name":"normalizationMultiplier","type":"uint256"},{"internalType":"bool","name":"invertSecondPrice","type":"bool"}],"internalType":"struct IChainlinkV3Oracle.ChainlinkV3DeploymentConfig","name":"_config","type":"tuple"}],"name":"verifyHeartbeat","outputs":[],"stateMutability":"pure","type":"function"}]

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