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// SPDX-License-Identifier: MIT
/* ———————————————————————————————————————————————————————————————————————————————— *
 *    _____     ______   ______     __     __   __     __     ______   __  __       *
 *   /\  __-.  /\__  _\ /\  == \   /\ \   /\ "-.\ \   /\ \   /\__  _\ /\ \_\ \      *
 *   \ \ \/\ \ \/_/\ \/ \ \  __<   \ \ \  \ \ \-.  \  \ \ \  \/_/\ \/ \ \____ \     *
 *    \ \____-    \ \_\  \ \_\ \_\  \ \_\  \ \_\\"\_\  \ \_\    \ \_\  \/\_____\    *
 *     \/____/     \/_/   \/_/ /_/   \/_/   \/_/ \/_/   \/_/     \/_/   \/_____/    *
 *                                                                                  *
 * ————————————————————————————————— dtrinity.org ————————————————————————————————— *
 *                                                                                  *
 *                                         ▲                                        *
 *                                        ▲ ▲                                       *
 *                                                                                  *
 * ———————————————————————————————————————————————————————————————————————————————— *
 * dTRINITY Protocol: https://github.com/dtrinity                                   *
 * ———————————————————————————————————————————————————————————————————————————————— */

pragma solidity 0.8.20;

import "./CurveOracleWrapper.sol";
import {IProxy} from "../interface/api3/IProxy.sol";
import "./ThresholdingUtils.sol";

/**
 * @title CurveAPI3CompositeWrapperWithThresholding
 * @notice Oracle wrapper that combines Curve pool prices with API3 prices and applies thresholding
 * @dev Used when Curve pool prices need to be converted using another token's price from API3
 */
contract CurveAPI3CompositeWrapperWithThresholding is
    CurveOracleWrapper,
    ThresholdingUtils
{
    /* Constants */
    uint32 public constant API3_HEARTBEAT = 1 days;
    uint32 public heartbeatStaleTimeLimit = 1 hours;

    /* Errors */
    error API3InvalidPrice(address asset);

    /* Types */
    struct CompositeFeed {
        address api3Asset; // Asset to get price from API3
        address api3Proxy; // API3 proxy contract address
        ThresholdConfig curveThreshold; // Threshold config for Curve price
        ThresholdConfig api3Threshold; // Threshold config for API3 price
    }

    /* State */

    /// @notice Mapping from asset to composite feed configuration
    mapping(address => CompositeFeed) public compositeFeeds;

    /* Events */

    event CompositeFeedSet(
        address indexed asset,
        address indexed api3Asset,
        address indexed api3Proxy,
        uint256 curveLowerThresholdInBase,
        uint256 curveFixedPriceInBase,
        uint256 api3LowerThresholdInBase,
        uint256 api3FixedPriceInBase
    );

    event CompositeFeedRemoved(address indexed asset);

    constructor(
        uint256 _baseCurrencyUnit
    ) CurveOracleWrapper(_baseCurrencyUnit) {}

    /**
     * @notice Set or update composite feed configuration for an asset
     */
    function setCompositeFeed(
        address asset,
        address api3Asset,
        address api3Proxy,
        uint256 curveLowerThresholdInBase,
        uint256 curveFixedPriceInBase,
        uint256 api3LowerThresholdInBase,
        uint256 api3FixedPriceInBase
    ) external onlyRole(ORACLE_MANAGER_ROLE) {
        // Verify the asset is configured in Curve wrapper
        PoolConfig memory poolConfig = assetConfigs[asset];
        if (address(poolConfig.pool) == address(0))
            revert AssetNotConfigured(asset);

        // Verify API3 proxy can provide a price
        (int224 value, uint32 timestamp) = IProxy(api3Proxy).read();
        if (
            value <= 0 ||
            timestamp + API3_HEARTBEAT + heartbeatStaleTimeLimit <=
            block.timestamp
        ) {
            revert API3InvalidPrice(api3Asset);
        }

        compositeFeeds[asset] = CompositeFeed({
            api3Asset: api3Asset,
            api3Proxy: api3Proxy,
            curveThreshold: ThresholdConfig({
                lowerThresholdInBase: curveLowerThresholdInBase,
                fixedPriceInBase: curveFixedPriceInBase
            }),
            api3Threshold: ThresholdConfig({
                lowerThresholdInBase: api3LowerThresholdInBase,
                fixedPriceInBase: api3FixedPriceInBase
            })
        });

        emit CompositeFeedSet(
            asset,
            api3Asset,
            api3Proxy,
            curveLowerThresholdInBase,
            curveFixedPriceInBase,
            api3LowerThresholdInBase,
            api3FixedPriceInBase
        );
    }

    /**
     * @notice Remove composite feed configuration for an asset
     * @param asset Asset address
     */
    function removeCompositeFeed(
        address asset
    ) external onlyRole(ORACLE_MANAGER_ROLE) {
        delete compositeFeeds[asset];
        emit CompositeFeedRemoved(asset);
    }

    /**
     * @notice Get the composite price info for an asset
     */
    function getPriceInfo(
        address asset
    ) public view override returns (uint256 priceInBase, bool isAlive) {
        // Get Curve pool price
        (uint256 curvePriceInBase, bool curveAlive) = super.getPriceInfo(asset);
        if (!curveAlive) return (0, false);

        CompositeFeed memory feed = compositeFeeds[asset];

        // Apply threshold to Curve price if threshold is configured
        if (feed.curveThreshold.lowerThresholdInBase > 0) {
            curvePriceInBase = _applyThreshold(
                curvePriceInBase,
                feed.curveThreshold
            );
        }

        // If no composite feed for API3, return Curve price
        if (feed.api3Asset == address(0)) {
            return (curvePriceInBase, true);
        }

        // Get API3 price
        (int224 value, uint32 timestamp) = IProxy(feed.api3Proxy).read();
        bool api3Alive = value > 0 &&
            timestamp + API3_HEARTBEAT + heartbeatStaleTimeLimit >
            block.timestamp;
        if (!api3Alive) return (0, false);

        uint256 api3PriceInBase = _convertToBaseCurrencyUnit(
            uint256(uint224(value))
        );

        // Apply threshold to API3 price if threshold is configured
        if (feed.api3Threshold.lowerThresholdInBase > 0) {
            api3PriceInBase = _applyThreshold(
                api3PriceInBase,
                feed.api3Threshold
            );
        }

        // Calculate composite price
        return (
            (curvePriceInBase * api3PriceInBase) / BASE_CURRENCY_UNIT,
            true
        );
    }
}

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

pragma solidity ^0.8.20;

import {IAccessControl} from "./IAccessControl.sol";
import {Context} from "../utils/Context.sol";
import {ERC165} from "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address account => bool) hasRole;
        bytes32 adminRole;
    }

    mapping(bytes32 role => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with an {AccessControlUnauthorizedAccount} error including the required role.
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual returns (bool) {
        return _roles[role].hasRole[account];
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
     * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
     * is missing `role`.
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert AccessControlUnauthorizedAccount(account, role);
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address callerConfirmation) public virtual {
        if (callerConfirmation != _msgSender()) {
            revert AccessControlBadConfirmation();
        }

        _revokeRole(role, callerConfirmation);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
        if (!hasRole(role, account)) {
            _roles[role].hasRole[account] = true;
            emit RoleGranted(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Attempts to revoke `role` to `account` and returns a boolean indicating if `role` was revoked.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
        if (hasRole(role, account)) {
            _roles[role].hasRole[account] = false;
            emit RoleRevoked(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }
}

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

pragma solidity ^0.8.20;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev The `account` is missing a role.
     */
    error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);

    /**
     * @dev The caller of a function is not the expected one.
     *
     * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}.
     */
    error AccessControlBadConfirmation();

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     */
    function renounceRole(bytes32 role, address callerConfirmation) external;
}

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

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
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
// 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 ERC20 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 v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: AGPL-3.0
/* ———————————————————————————————————————————————————————————————————————————————— *
 *    _____     ______   ______     __     __   __     __     ______   __  __       *
 *   /\  __-.  /\__  _\ /\  == \   /\ \   /\ "-.\ \   /\ \   /\__  _\ /\ \_\ \      *
 *   \ \ \/\ \ \/_/\ \/ \ \  __<   \ \ \  \ \ \-.  \  \ \ \  \/_/\ \/ \ \____ \     *
 *    \ \____-    \ \_\  \ \_\ \_\  \ \_\  \ \_\\"\_\  \ \_\    \ \_\  \/\_____\    *
 *     \/____/     \/_/   \/_/ /_/   \/_/   \/_/ \/_/   \/_/     \/_/   \/_____/    *
 *                                                                                  *
 * ————————————————————————————————— dtrinity.org ————————————————————————————————— *
 *                                                                                  *
 *                                         ▲                                        *
 *                                        ▲ ▲                                       *
 *                                                                                  *
 * ———————————————————————————————————————————————————————————————————————————————— *
 * dTRINITY Protocol: https://github.com/dtrinity                                   *
 * ———————————————————————————————————————————————————————————————————————————————— */

pragma solidity ^0.8.0;

/**
 * @title IPriceOracleGetter
 * @author Aave
 * @notice Interface for the Aave price oracle.
 */
interface IPriceOracleGetter {
    /**
     * @notice Returns the base currency address
     * @dev Address 0x0 is reserved for USD as base currency.
     * @return Returns the base currency address.
     */
    function BASE_CURRENCY() external view returns (address);

    /**
     * @notice Returns the base currency unit
     * @dev 1 ether for ETH, 1e8 for USD.
     * @return Returns the base currency unit.
     */
    function BASE_CURRENCY_UNIT() external view returns (uint256);

    /**
     * @notice Returns the asset price in the base currency
     * @param asset The address of the asset
     * @return The price of the asset
     */
    function getAssetPrice(address asset) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
/* ———————————————————————————————————————————————————————————————————————————————— *
 *    _____     ______   ______     __     __   __     __     ______   __  __       *
 *   /\  __-.  /\__  _\ /\  == \   /\ \   /\ "-.\ \   /\ \   /\__  _\ /\ \_\ \      *
 *   \ \ \/\ \ \/_/\ \/ \ \  __<   \ \ \  \ \ \-.  \  \ \ \  \/_/\ \/ \ \____ \     *
 *    \ \____-    \ \_\  \ \_\ \_\  \ \_\  \ \_\\"\_\  \ \_\    \ \_\  \/\_____\    *
 *     \/____/     \/_/   \/_/ /_/   \/_/   \/_/ \/_/   \/_/     \/_/   \/_____/    *
 *                                                                                  *
 * ————————————————————————————————— dtrinity.org ————————————————————————————————— *
 *                                                                                  *
 *                                         ▲                                        *
 *                                        ▲ ▲                                       *
 *                                                                                  *
 * ———————————————————————————————————————————————————————————————————————————————— *
 * dTRINITY Protocol: https://github.com/dtrinity                                   *
 * ———————————————————————————————————————————————————————————————————————————————— */

pragma solidity 0.8.20;

import "contracts/lending/core/interfaces/IPriceOracleGetter.sol";

/**
 * @dev Interface for the individual oracle wrappers, to unify interface between Redstone and API3 for example
 */
interface IOracleWrapper is IPriceOracleGetter {
    function getPriceInfo(
        address asset
    ) external view returns (uint256 price, bool isAlive);
}

// SPDX-License-Identifier: MIT
/* ———————————————————————————————————————————————————————————————————————————————— *
 *    _____     ______   ______     __     __   __     __     ______   __  __       *
 *   /\  __-.  /\__  _\ /\  == \   /\ \   /\ "-.\ \   /\ \   /\__  _\ /\ \_\ \      *
 *   \ \ \/\ \ \/_/\ \/ \ \  __<   \ \ \  \ \ \-.  \  \ \ \  \/_/\ \/ \ \____ \     *
 *    \ \____-    \ \_\  \ \_\ \_\  \ \_\  \ \_\\"\_\  \ \_\    \ \_\  \/\_____\    *
 *     \/____/     \/_/   \/_/ /_/   \/_/   \/_/ \/_/   \/_/     \/_/   \/_____/    *
 *                                                                                  *
 * ————————————————————————————————— dtrinity.org ————————————————————————————————— *
 *                                                                                  *
 *                                         ▲                                        *
 *                                        ▲ ▲                                       *
 *                                                                                  *
 * ———————————————————————————————————————————————————————————————————————————————— *
 * dTRINITY Protocol: https://github.com/dtrinity                                   *
 * ———————————————————————————————————————————————————————————————————————————————— */

pragma solidity ^0.8.0;

/// @dev See DapiProxy.sol for comments about usage
interface IProxy {
    function read() external view returns (int224 value, uint32 timestamp);

    function api3ServerV1() external view returns (address);
}

// SPDX-License-Identifier: MIT
/* ———————————————————————————————————————————————————————————————————————————————— *
 *    _____     ______   ______     __     __   __     __     ______   __  __       *
 *   /\  __-.  /\__  _\ /\  == \   /\ \   /\ "-.\ \   /\ \   /\__  _\ /\ \_\ \      *
 *   \ \ \/\ \ \/_/\ \/ \ \  __<   \ \ \  \ \ \-.  \  \ \ \  \/_/\ \/ \ \____ \     *
 *    \ \____-    \ \_\  \ \_\ \_\  \ \_\  \ \_\\"\_\  \ \_\    \ \_\  \/\_____\    *
 *     \/____/     \/_/   \/_/ /_/   \/_/   \/_/ \/_/   \/_/     \/_/   \/_____/    *
 *                                                                                  *
 * ————————————————————————————————— dtrinity.org ————————————————————————————————— *
 *                                                                                  *
 *                                         ▲                                        *
 *                                        ▲ ▲                                       *
 *                                                                                  *
 * ———————————————————————————————————————————————————————————————————————————————— *
 * dTRINITY Protocol: https://github.com/dtrinity                                   *
 * ———————————————————————————————————————————————————————————————————————————————— */

pragma solidity 0.8.20;

import "../IOracleWrapper.sol";
import "@openzeppelin/contracts-5/access/AccessControl.sol";

/**
 * @title ICurveOracleWrapper
 * @notice Interface for Curve pool oracle wrappers
 */
abstract contract ICurveOracleWrapper is IOracleWrapper, AccessControl {
    /* Core state */

    /// @notice Base currency unit (e.g. 1e8 if using Aave's oracle decimals)
    uint256 public immutable BASE_CURRENCY_UNIT;

    uint256 public constant CURVE_BASE_CURRENCY_UNIT = 10 ** 18;

    uint256 public constant CURVE_RATE_PRECISION = 10 ** 18;

    /// @notice Base currency (address(0) for USD)
    address public constant BASE_CURRENCY = address(0);

    /* Events */

    event AssetConfigSet(
        address indexed asset,
        address indexed pool,
        uint256 tokenIndex
    );
    event AssetConfigRemoved(address indexed asset);

    /* Errors */

    error AssetNotConfigured(address asset);
    error InvalidPool(address pool);
    error InvalidTokenIndex(address pool, uint256 tokenIndex);
    error PriceIsZero(address asset);

    /* Roles */

    bytes32 public constant ORACLE_MANAGER_ROLE =
        keccak256("ORACLE_MANAGER_ROLE");

    constructor(uint256 _baseCurrencyUnit) {
        BASE_CURRENCY_UNIT = _baseCurrencyUnit;
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
        _grantRole(ORACLE_MANAGER_ROLE, msg.sender);
    }

    /**
     * @notice Set or update configuration for an asset
     * @param asset Asset address
     * @param pool Curve pool address
     */
    function setAssetConfig(address asset, address pool) external virtual;

    /**
     * @notice Remove configuration for an asset
     * @param asset Asset address
     */
    function removeAssetConfig(address asset) external virtual;

    function getPriceInfo(
        address asset
    ) public view virtual override returns (uint256 price, bool isAlive);

    function getAssetPrice(
        address asset
    ) external view virtual override returns (uint256) {
        (uint256 price, bool isAlive) = getPriceInfo(asset);
        if (!isAlive) revert PriceIsZero(asset);
        return price;
    }

    function _convertToBaseCurrencyUnit(
        uint256 price
    ) internal view returns (uint256) {
        return (price * BASE_CURRENCY_UNIT) / CURVE_BASE_CURRENCY_UNIT;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

interface ICurveStableNG {
    // View functions
    function price_oracle(uint256 i) external view returns (uint256);

    function ema_price(uint256 i) external view returns (uint256);

    function last_price(uint256 i) external view returns (uint256);

    function get_p(uint256 i) external view returns (uint256);

    function coins(uint256 i) external view returns (address);

    function N_COINS() external view returns (uint256);

    function get_virtual_price() external view returns (uint256);

    function balances(uint256 i) external view returns (uint256);

    function get_balances() external view returns (uint256[] memory);

    function get_dx(
        int128 i,
        int128 j,
        uint256 dy
    ) external view returns (uint256);

    function get_dy(
        int128 i,
        int128 j,
        uint256 dx
    ) external view returns (uint256);

    function calc_token_amount(
        uint256[] memory amounts,
        bool is_deposit
    ) external view returns (uint256);

    function calc_withdraw_one_coin(
        uint256 burn_amount,
        int128 i
    ) external view returns (uint256);

    function D_oracle() external view returns (uint256);

    function dynamic_fee(int128 i, int128 j) external view returns (uint256);

    // State changing functions
    function exchange(
        int128 i,
        int128 j,
        uint256 dx,
        uint256 min_dy
    ) external returns (uint256);

    function exchange(
        int128 i,
        int128 j,
        uint256 dx,
        uint256 min_dy,
        address receiver
    ) external returns (uint256);

    function exchange_received(
        int128 i,
        int128 j,
        uint256 dx,
        uint256 min_dy
    ) external returns (uint256);

    function exchange_received(
        int128 i,
        int128 j,
        uint256 dx,
        uint256 min_dy,
        address receiver
    ) external returns (uint256);

    // Liquidity functions
    function add_liquidity(
        uint256[] memory amounts,
        uint256 min_mint_amount
    ) external returns (uint256);

    function add_liquidity(
        uint256[] memory amounts,
        uint256 min_mint_amount,
        address receiver
    ) external returns (uint256);

    function remove_liquidity(
        uint256 burn_amount,
        uint256[] memory min_amounts
    ) external returns (uint256[] memory);

    function remove_liquidity(
        uint256 burn_amount,
        uint256[] memory min_amounts,
        address receiver
    ) external returns (uint256[] memory);

    function remove_liquidity(
        uint256 burn_amount,
        uint256[] memory min_amounts,
        address receiver,
        bool claim_admin_fees
    ) external returns (uint256[] memory);

    function remove_liquidity_one_coin(
        uint256 burn_amount,
        int128 i,
        uint256 min_received
    ) external returns (uint256);

    function remove_liquidity_one_coin(
        uint256 burn_amount,
        int128 i,
        uint256 min_received,
        address receiver
    ) external returns (uint256);

    function remove_liquidity_imbalance(
        uint256[] memory amounts,
        uint256 max_burn_amount
    ) external returns (uint256);

    function remove_liquidity_imbalance(
        uint256[] memory amounts,
        uint256 max_burn_amount,
        address receiver
    ) external returns (uint256);

    // Admin functions
    function ramp_A(uint256 future_A, uint256 future_time) external;

    function stop_ramp_A() external;

    function set_new_fee(
        uint256 new_fee,
        uint256 new_offpeg_fee_multiplier
    ) external;

    function set_ma_exp_time(uint256 ma_exp_time, uint256 D_ma_time) external;

    function withdraw_admin_fees() external;

    // ERC20 functions
    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);

    function approve(address spender, uint256 value) external returns (bool);

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function allowance(
        address owner,
        address spender
    ) external view returns (uint256);

    function nonces(address owner) external view returns (uint256);

    // Additional view functions
    function version() external view returns (string memory);

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

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

    function decimals() external view returns (uint8);

    function fee() external view returns (uint256);

    function offpeg_fee_multiplier() external view returns (uint256);

    function admin_fee() external view returns (uint256);

    function initial_A() external view returns (uint256);

    function future_A() external view returns (uint256);

    function initial_A_time() external view returns (uint256);

    function future_A_time() external view returns (uint256);

    function admin_balances(uint256 i) external view returns (uint256);

    function ma_exp_time() external view returns (uint256);

    function D_ma_time() external view returns (uint256);

    function ma_last_time() external view returns (uint256);

    function salt() external view returns (bytes32);

    function A() external view returns (uint256);

    function A_precise() external view returns (uint256);

    function stored_rates() external view returns (uint256[] memory);
}

// SPDX-License-Identifier: MIT
/* ———————————————————————————————————————————————————————————————————————————————— *
 *    _____     ______   ______     __     __   __     __     ______   __  __       *
 *   /\  __-.  /\__  _\ /\  == \   /\ \   /\ "-.\ \   /\ \   /\__  _\ /\ \_\ \      *
 *   \ \ \/\ \ \/_/\ \/ \ \  __<   \ \ \  \ \ \-.  \  \ \ \  \/_/\ \/ \ \____ \     *
 *    \ \____-    \ \_\  \ \_\ \_\  \ \_\  \ \_\\"\_\  \ \_\    \ \_\  \/\_____\    *
 *     \/____/     \/_/   \/_/ /_/   \/_/   \/_/ \/_/   \/_/     \/_/   \/_____/    *
 *                                                                                  *
 * ————————————————————————————————— dtrinity.org ————————————————————————————————— *
 *                                                                                  *
 *                                         ▲                                        *
 *                                        ▲ ▲                                       *
 *                                                                                  *
 * ———————————————————————————————————————————————————————————————————————————————— *
 * dTRINITY Protocol: https://github.com/dtrinity                                   *
 * ———————————————————————————————————————————————————————————————————————————————— */

pragma solidity 0.8.20;

import "../interface/curve/ICurveOracleWrapper.sol";
import "../interface/curve/ICurveStableNG.sol";
import "@openzeppelin/contracts-5/token/ERC20/extensions/IERC20Metadata.sol";

/**
 * @title CurveOracleWrapper
 * @notice Oracle wrapper for Curve pools
 * @dev Uses get_dy to calculate the effective exchange rate between two tokens
 */
contract CurveOracleWrapper is ICurveOracleWrapper {
    /* Constants */

    uint256 private constant REQUIRED_N_COINS = 2; // Required number of coins in pool

    /* Core state */

    /// @notice Mapping from asset to pool and token index
    mapping(address => PoolConfig) public assetConfigs;

    struct PoolConfig {
        address pool;
        uint256 tokenIndex;
    }

    constructor(
        uint256 _baseCurrencyUnit
    ) ICurveOracleWrapper(_baseCurrencyUnit) {}

    function setAssetConfig(
        address asset,
        address pool
    ) external override onlyRole(ORACLE_MANAGER_ROLE) {
        if (pool == address(0)) revert InvalidPool(pool);

        ICurveStableNG curvePool = ICurveStableNG(pool);

        try curvePool.N_COINS() returns (uint256 nCoins) {
            if (nCoins != REQUIRED_N_COINS) revert InvalidPool(pool);
        } catch {
            revert InvalidPool(pool);
        }

        uint256 tokenIndex = type(uint256).max; // Invalid initial value

        // Find the token index by iterating through coins
        for (uint256 i = 0; i < REQUIRED_N_COINS; i++) {
            if (curvePool.coins(i) == asset) {
                tokenIndex = i;
                break;
            }
        }

        if (tokenIndex == type(uint256).max)
            revert InvalidTokenIndex(pool, tokenIndex);

        assetConfigs[asset] = PoolConfig({
            pool: address(curvePool),
            tokenIndex: tokenIndex
        });

        emit AssetConfigSet(asset, pool, tokenIndex);
    }

    function removeAssetConfig(
        address asset
    ) external override onlyRole(ORACLE_MANAGER_ROLE) {
        delete assetConfigs[asset];
        emit AssetConfigRemoved(asset);
    }

    function getPriceInfo(
        address asset
    ) public view virtual override returns (uint256 price, bool isAlive) {
        PoolConfig memory config = assetConfigs[asset];
        if (address(config.pool) == address(0))
            revert AssetNotConfigured(asset);

        ICurveStableNG curvePool = ICurveStableNG(config.pool);

        uint256 unscaledPrice;
        uint256 scaledPrice;

        // Since we only support 2 coins now
        // If tokenIndex is 0, get price against token1
        // If tokenIndex is 1, get price against token0
        uint256 otherTokenIndex = config.tokenIndex == 0 ? 1 : 0;
        if (config.tokenIndex > 0) {
            // price_oracle of coins[i] against coins[0]
            unscaledPrice = curvePool.price_oracle(config.tokenIndex - 1);
        } else {
            // get the reverse EMA (price of coins[0] with regard to coins[i]):
            unscaledPrice =
                (CURVE_BASE_CURRENCY_UNIT * CURVE_BASE_CURRENCY_UNIT) /
                curvePool.price_oracle(otherTokenIndex - 1);
        }

        // Get multiplier rate
        uint256[] memory rates = curvePool.stored_rates();
        if (rates.length <= config.tokenIndex) {
            scaledPrice = unscaledPrice;
        } else {
            scaledPrice =
                (rates[config.tokenIndex] * unscaledPrice) /
                CURVE_RATE_PRECISION;
        }

        price = _convertToBaseCurrencyUnit(scaledPrice);

        isAlive = price > 0;
        return (price, isAlive);
    }
}

// SPDX-License-Identifier: MIT
/* ———————————————————————————————————————————————————————————————————————————————— *
 *    _____     ______   ______     __     __   __     __     ______   __  __       *
 *   /\  __-.  /\__  _\ /\  == \   /\ \   /\ "-.\ \   /\ \   /\__  _\ /\ \_\ \      *
 *   \ \ \/\ \ \/_/\ \/ \ \  __<   \ \ \  \ \ \-.  \  \ \ \  \/_/\ \/ \ \____ \     *
 *    \ \____-    \ \_\  \ \_\ \_\  \ \_\  \ \_\\"\_\  \ \_\    \ \_\  \/\_____\    *
 *     \/____/     \/_/   \/_/ /_/   \/_/   \/_/ \/_/   \/_/     \/_/   \/_____/    *
 *                                                                                  *
 * ————————————————————————————————— dtrinity.org ————————————————————————————————— *
 *                                                                                  *
 *                                         ▲                                        *
 *                                        ▲ ▲                                       *
 *                                                                                  *
 * ———————————————————————————————————————————————————————————————————————————————— *
 * dTRINITY Protocol: https://github.com/dtrinity                                   *
 * ———————————————————————————————————————————————————————————————————————————————— */

pragma solidity 0.8.20;

abstract contract ThresholdingUtils {
    /* Types */
    struct ThresholdConfig {
        /// @notice The minimum price after which thresholding is applied. Not a price cap, but a trigger point.
        /// @dev If lowerThresholdInBase == fixedPriceInBase: Acts as an upper threshold
        /// @dev If lowerThresholdInBase < fixedPriceInBase: Acts as "price rounding up" (e.g. if USDC > 0.997 then round to 1)
        /// @dev If lowerThresholdInBase > fixedPriceInBase: Acts as "price rounding down" (e.g. if USDC > 1.003 then round to 1)
        uint256 lowerThresholdInBase;
        uint256 fixedPriceInBase;
    }

    /**
     * @notice Apply threshold to a price value
     * @param priceInBase The price to check against threshold
     * @param thresholdConfig The threshold configuration
     * @return The original price or fixed price based on threshold
     */
    function _applyThreshold(
        uint256 priceInBase,
        ThresholdConfig memory thresholdConfig
    ) internal pure returns (uint256) {
        if (priceInBase > thresholdConfig.lowerThresholdInBase) {
            return thresholdConfig.fixedPriceInBase;
        }
        return priceInBase;
    }
}

{
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [],
  "viaIR": true,
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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ThresholdingUtils.ThresholdConfig","name":"curveThreshold","type":"tuple"},{"components":[{"internalType":"uint256","name":"lowerThresholdInBase","type":"uint256"},{"internalType":"uint256","name":"fixedPriceInBase","type":"uint256"}],"internalType":"struct ThresholdingUtils.ThresholdConfig","name":"api3Threshold","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"getAssetPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"getPriceInfo","outputs":[{"internalType":"uint256","name":"priceInBase","type":"uint256"},{"internalType":"bool","name":"isAlive","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"heartbeatStaleTimeLimit","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"removeAssetConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"}],"name":"removeCompositeFeed","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"callerConfirmation","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"address","name":"pool","type":"address"}],"name":"setAssetConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"address","name":"api3Asset","type":"address"},{"internalType":"address","name":"api3Proxy","type":"address"},{"internalType":"uint256","name":"curveLowerThresholdInBase","type":"uint256"},{"internalType":"uint256","name":"curveFixedPriceInBase","type":"uint256"},{"internalType":"uint256","name":"api3LowerThresholdInBase","type":"uint256"},{"internalType":"uint256","name":"api3FixedPriceInBase","type":"uint256"}],"name":"setCompositeFeed","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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0000000000000000000000000000000000000000000000000000000005f5e100

-----Decoded View---------------
Arg [0] : _baseCurrencyUnit (uint256): 100000000

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000005f5e100