// File: contracts/oracles/GenericOracle.sol



// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.20;

import "@openzeppelin/contracts/access/Ownable.sol";

import "../../interfaces/IOracle.sol";

contract GenericOracle is IOracle, Ownable {
    event CustomOracleAdded(address token, address oracle);

    mapping(address => IOracle) public customOracles;

    IOracle internal _chainlinkOracle;
    IOracle internal _curveLpOracle;
    address internal WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address internal constant _ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    function initialize(address curveLpOracle, address chainlinkOracle) external {
        require(address(_curveLpOracle) == address(0), "already initialized");
        _chainlinkOracle = IOracle(chainlinkOracle);
        _curveLpOracle = IOracle(curveLpOracle);
    }

    function isTokenSupported(address token) external view override returns (bool) {
        token = token == WETH ? _ETH_ADDRESS : token;
        return
            address(customOracles[token]) != address(0) ||
            _chainlinkOracle.isTokenSupported(token) ||
            _curveLpOracle.isTokenSupported(token);
    }

    function getUSDPrice(address token) external view virtual returns (uint256) {
        if (token == WETH)
            token = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
        if (_chainlinkOracle.isTokenSupported(token)) {
            return _chainlinkOracle.getUSDPrice(token);
        }
        if (address(customOracles[token]) != address(0)) {
            return customOracles[token].getUSDPrice(token);
        }
        return _curveLpOracle.getUSDPrice(token);
    }

    function setCustomOracle(address token, address oracle) external onlyOwner {
        customOracles[token] = IOracle(oracle);
        emit CustomOracleAdded(token, oracle);
    }
}

// File: node_modules/@openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: interfaces/IOracle.sol



// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.20;

interface IOracle {
    event TokenUpdated(address indexed token, address feed, uint256 maxDelay, bool isEthPrice);

    /// @notice returns the price in USD of symbol.
    function getUSDPrice(address token) external view returns (uint256);

    /// @notice returns if the given token is supported for pricing.
    function isTokenSupported(address token) external view returns (bool);
}

// File: node_modules/@openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @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;
    }
}