// SPDX-License-Identifier: MIT

pragma solidity ^0.8.10;

import {IPendingOwnable} from "../interfaces/IPendingOwnable.sol";

/**
 * @title Pending Ownable
 * @author Trader Joe
 * @notice 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. The ownership of this contract is transferred using the
 * push and pull pattern, the current owner sets a `pendingOwner` using
 * {setPendingOwner} and that address can then call {becomeOwner} to become the
 * owner of that contract. The main logic and comments comes from OpenZeppelin's
 * Ownable contract.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {setPendingOwner} and {becomeOwner}.
 *
 * 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
 */
contract PendingOwnable is IPendingOwnable {
    address private _owner;
    address private _pendingOwner;

    /**
     * @notice Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        if (msg.sender != _owner) revert PendingOwnable__NotOwner();
        _;
    }

    /**
     * /**
     * @notice Throws if called by any account other than the pending owner.
     */
    modifier onlyPendingOwner() {
        if (msg.sender != _pendingOwner || msg.sender == address(0)) revert PendingOwnable__NotPendingOwner();
        _;
    }

    /**
     * /**
     * @notice Initializes the contract setting the deployer as the initial owner
     */
    constructor() {
        _transferOwnership(msg.sender);
    }

    /**
     * @notice Returns the address of the current owner
     * @return The address of the current owner
     */
    function owner() public view override returns (address) {
        return _owner;
    }

    /**
     * @notice Returns the address of the current pending owner
     * @return The address of the current pending owner
     */
    function pendingOwner() public view override returns (address) {
        return _pendingOwner;
    }

    /**
     * @notice Sets the pending owner address. This address will be able to become
     * the owner of this contract by calling {becomeOwner}
     */
    function setPendingOwner(address pendingOwner_) public override onlyOwner {
        if (pendingOwner_ == address(0)) revert PendingOwnable__AddressZero();
        if (_pendingOwner != address(0)) revert PendingOwnable__PendingOwnerAlreadySet();
        _setPendingOwner(pendingOwner_);
    }

    /**
     * @notice Revoke the pending owner address. This address will not be able to
     * call {becomeOwner} to become the owner anymore.
     * Can only be called by the owner
     */
    function revokePendingOwner() public override onlyOwner {
        if (_pendingOwner == address(0)) revert PendingOwnable__NoPendingOwner();
        _setPendingOwner(address(0));
    }

    /**
     * @notice Transfers the ownership to the new owner (`pendingOwner).
     * Can only be called by the pending owner
     */
    function becomeOwner() public override onlyPendingOwner {
        _transferOwnership(msg.sender);
    }

    /**
     * @notice 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 override onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     * @param _newOwner The address of the new owner
     */
    function _transferOwnership(address _newOwner) internal virtual {
        address _oldOwner = _owner;
        _owner = _newOwner;
        _pendingOwner = address(0);
        emit OwnershipTransferred(_oldOwner, _newOwner);
    }

    /**
     * @dev Push the new owner, it needs to be pulled to be effective.
     * Internal function without access restriction.
     * @param pendingOwner_ The address of the new pending owner
     */
    function _setPendingOwner(address pendingOwner_) internal virtual {
        _pendingOwner = pendingOwner_;
        emit PendingOwnerSet(pendingOwner_);
    }
}
[{"inputs":[{"internalType":"address","name":"feeRecipient","type":"address"},{"internalType":"uint256","name":"flashLoanFee","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"LBFactory__AddressZero","type":"error"},{"inputs":[{"internalType":"uint256","name":"binStep","type":"uint256"}],"name":"LBFactory__BinStepHasNoPreset","type":"error"},{"inputs":[{"internalType":"uint256","name":"binStep","type":"uint256"}],"name":"LBFactory__BinStepTooLow","type":"error"},{"inputs":[{"internalType":"uint256","name":"fees","type":"uint256"},{"internalType":"uint256","name":"maxFees","type":"uint256"}],"name":"LBFactory__FlashLoanFeeAboveMax","type":"error"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"}],"name":"LBFactory__IdenticalAddresses","type":"error"},{"inputs":[],"name":"LBFactory__ImplementationNotSet","type":"error"},{"inputs":[{"internalType":"contract IERC20","name":"tokenX","type":"address"},{"internalType":"contract IERC20","name":"tokenY","type":"address"},{"internalType":"uint256","name":"_binStep","type":"uint256"}],"name":"LBFactory__LBPairAlreadyExists","type":"error"},{"inputs":[{"internalType":"contract IERC20","name":"tokenX","type":"address"},{"internalType":"contract IERC20","name":"tokenY","type":"address"},{"internalType":"uint256","name":"binStep","type":"uint256"}],"name":"LBFactory__LBPairDoesNotExist","type":"error"},{"inputs":[],"name":"LBFactory__LBPairIgnoredIsAlreadyInTheSameState","type":"error"},{"inputs":[{"internalType":"contract IERC20","name":"tokenX","type":"address"},{"internalType":"contract IERC20","name":"tokenY","type":"address"},{"internalType":"uint256","name":"binStep","type":"uint256"}],"name":"LBFactory__LBPairNotCreated","type":"error"},{"inputs":[{"internalType":"address","name":"LBPairImplementation","type":"address"}],"name":"LBFactory__LBPairSafetyCheckFailed","type":"error"},{"inputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"binStep","type":"uint256"}],"name":"LBFactory__PresetIsLockedForUsers","type":"error"},{"inputs":[],"name":"LBFactory__PresetOpenStateIsAlreadyInTheSameState","type":"error"},{"inputs":[{"internalType":"contract IERC20","name":"quoteAsset","type":"address"}],"name":"LBFactory__QuoteAssetAlreadyWhitelisted","type":"error"},{"inputs":[{"internalType":"contract IERC20","name":"quoteAsset","type":"address"}],"name":"LBFactory__QuoteAssetNotWhitelisted","type":"error"},{"inputs":[{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"LBFactory__SameFeeRecipient","type":"error"},{"inputs":[{"internalType":"uint256","name":"flashLoanFee","type":"uint256"}],"name":"LBFactory__SameFlashLoanFee","type":"error"},{"inputs":[{"internalType":"address","name":"LBPairImplementation","type":"address"}],"name":"LBFactory__SameImplementation","type":"error"},{"inputs":[],"name":"PairParametersHelper__InvalidParameter","type":"error"},{"inputs":[],"name":"PendingOwnable__AddressZero","type":"error"},{"inputs":[],"name":"PendingOwnable__NoPendingOwner","type":"error"},{"inputs":[],"name":"PendingOwnable__NotOwner","type":"error"},{"inputs":[],"name":"PendingOwnable__NotPendingOwner","type":"error"},{"inputs":[],"name":"PendingOwnable__PendingOwnerAlreadySet","type":"error"},{"inputs":[],"name":"SafeCast__Exceeds16Bits","type":"error"},{"inputs":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"int256","name":"y","type":"int256"}],"name":"Uint128x128Math__PowUnderflow","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldRecipient","type":"address"},{"indexed":false,"internalType":"address","name":"newRecipient","type":"address"}],"name":"FeeRecipientSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"oldFlashLoanFee","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newFlashLoanFee","type":"uint256"}],"name":"FlashLoanFeeSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract IERC20","name":"tokenX","type":"address"},{"indexed":true,"internalType":"contract IERC20","name":"tokenY","type":"address"},{"indexed":true,"internalType":"uint256","name":"binStep","type":"uint256"},{"indexed":false,"internalType":"contract ILBPair","name":"LBPair","type":"address"},{"indexed":false,"internalType":"uint256","name":"pid","type":"uint256"}],"name":"LBPairCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract ILBPair","name":"LBPair","type":"address"},{"indexed":false,"internalType":"bool","name":"ignored","type":"bool"}],"name":"LBPairIgnoredStateChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldLBPairImplementation","type":"address"},{"indexed":false,"internalType":"address","name":"LBPairImplementation","type":"address"}],"name":"LBPairImplementationSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"pendingOwner","type":"address"}],"name":"PendingOwnerSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"binStep","type":"uint256"},{"indexed":true,"internalType":"bool","name":"isOpen","type":"bool"}],"name":"PresetOpenStateChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"binStep","type":"uint256"}],"name":"PresetRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"binStep","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"baseFactor","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"filterPeriod","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"decayPeriod","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"reductionFactor","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"variableFeeControl","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"protocolShare","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"maxVolatilityAccumulator","type":"uint256"}],"name":"PresetSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract IERC20","name":"quoteAsset","type":"address"}],"name":"QuoteAssetAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract IERC20","name":"quoteAsset","type":"address"}],"name":"QuoteAssetRemoved","type":"event"},{"inputs":[{"internalType":"contract IERC20","name":"quoteAsset","type":"address"}],"name":"addQuoteAsset","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"becomeOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"tokenX","type":"address"},{"internalType":"contract IERC20","name":"tokenY","type":"address"},{"internalType":"uint24","name":"activeId","type":"uint24"},{"internalType":"uint16","name":"binStep","type":"uint16"}],"name":"createLBPair","outputs":[{"internalType":"contract ILBPair","name":"pair","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ILBPair","name":"pair","type":"address"}],"name":"forceDecay","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getAllBinSteps","outputs":[{"internalType":"uint256[]","name":"binStepWithPreset","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"tokenX","type":"address"},{"internalType":"contract IERC20","name":"tokenY","type":"address"}],"name":"getAllLBPairs","outputs":[{"components":[{"internalType":"uint16","name":"binStep","type":"uint16"},{"internalType":"contract ILBPair","name":"LBPair","type":"address"},{"internalType":"bool","name":"createdByOwner","type":"bool"},{"internalType":"bool","name":"ignoredForRouting","type":"bool"}],"internalType":"struct ILBFactory.LBPairInformation[]","name":"lbPairsAvailable","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getFeeRecipient","outputs":[{"internalType":"address","name":"feeRecipient","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getFlashLoanFee","outputs":[{"internalType":"uint256","name":"flashLoanFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getLBPairAtIndex","outputs":[{"internalType":"contract ILBPair","name":"lbPair","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getLBPairImplementation","outputs":[{"internalType":"address","name":"lbPairImplementation","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"tokenA","type":"address"},{"internalType":"contract IERC20","name":"tokenB","type":"address"},{"internalType":"uint256","name":"binStep","type":"uint256"}],"name":"getLBPairInformation","outputs":[{"components":[{"internalType":"uint16","name":"binStep","type":"uint16"},{"internalType":"contract ILBPair","name":"LBPair","type":"address"},{"internalType":"bool","name":"createdByOwner","type":"bool"},{"internalType":"bool","name":"ignoredForRouting","type":"bool"}],"internalType":"struct ILBFactory.LBPairInformation","name":"lbPairInformation","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getMaxFlashLoanFee","outputs":[{"internalType":"uint256","name":"maxFee","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"getMinBinStep","outputs":[{"internalType":"uint256","name":"minBinStep","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"getNumberOfLBPairs","outputs":[{"internalType":"uint256","name":"lbPairNumber","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getNumberOfQuoteAssets","outputs":[{"internalType":"uint256","name":"numberOfQuoteAssets","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getOpenBinSteps","outputs":[{"internalType":"uint256[]","name":"openBinStep","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"binStep","type":"uint256"}],"name":"getPreset","outputs":[{"internalType":"uint256","name":"baseFactor","type":"uint256"},{"internalType":"uint256","name":"filterPeriod","type":"uint256"},{"internalType":"uint256","name":"decayPeriod","type":"uint256"},{"internalType":"uint256","name":"reductionFactor","type":"uint256"},{"internalType":"uint256","name":"variableFeeControl","type":"uint256"},{"internalType":"uint256","name":"protocolShare","type":"uint256"},{"internalType":"uint256","name":"maxVolatilityAccumulator","type":"uint256"},{"internalType":"bool","name":"isOpen","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getQuoteAssetAtIndex","outputs":[{"internalType":"contract IERC20","name":"asset","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"}],"name":"isQuoteAsset","outputs":[{"internalType":"bool","name":"isQuote","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"binStep","type":"uint16"}],"name":"removePreset","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"quoteAsset","type":"address"}],"name":"removeQuoteAsset","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"revokePendingOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"setFeeRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"tokenX","type":"address"},{"internalType":"contract IERC20","name":"tokenY","type":"address"},{"internalType":"uint16","name":"binStep","type":"uint16"},{"internalType":"uint16","name":"baseFactor","type":"uint16"},{"internalType":"uint16","name":"filterPeriod","type":"uint16"},{"internalType":"uint16","name":"decayPeriod","type":"uint16"},{"internalType":"uint16","name":"reductionFactor","type":"uint16"},{"internalType":"uint24","name":"variableFeeControl","type":"uint24"},{"internalType":"uint16","name":"protocolShare","type":"uint16"},{"internalType":"uint24","name":"maxVolatilityAccumulator","type":"uint24"}],"name":"setFeesParametersOnPair","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"flashLoanFee","type":"uint256"}],"name":"setFlashLoanFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"tokenX","type":"address"},{"internalType":"contract IERC20","name":"tokenY","type":"address"},{"internalType":"uint16","name":"binStep","type":"uint16"},{"internalType":"bool","name":"ignored","type":"bool"}],"name":"setLBPairIgnored","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newLBPairImplementation","type":"address"}],"name":"setLBPairImplementation","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"pendingOwner_","type":"address"}],"name":"setPendingOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"binStep","type":"uint16"},{"internalType":"uint16","name":"baseFactor","type":"uint16"},{"internalType":"uint16","name":"filterPeriod","type":"uint16"},{"internalType":"uint16","name":"decayPeriod","type":"uint16"},{"internalType":"uint16","name":"reductionFactor","type":"uint16"},{"internalType":"uint24","name":"variableFeeControl","type":"uint24"},{"internalType":"uint16","name":"protocolShare","type":"uint16"},{"internalType":"uint24","name":"maxVolatilityAccumulator","type":"uint24"},{"internalType":"bool","name":"isOpen","type":"bool"}],"name":"setPreset","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"binStep","type":"uint16"},{"internalType":"bool","name":"isOpen","type":"bool"}],"name":"setPresetOpenState","outputs":[],"stateMutability":"nonpayable","type":"function"}]