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// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
import "../pools/interfaces/IPoolsConfig.sol";
import "../interfaces/IExchangeConfig.sol";
import "./interfaces/IStakingConfig.sol";
import "../pools/interfaces/IPools.sol";
import "./interfaces/ILiquidity.sol";
import "./StakingRewards.sol";
import "../pools/PoolMath.sol";
import "../pools/PoolUtils.sol";


// Allows users to add liquidity and increase their liquidity share in the StakingRewards pool so that they can receive proportional future rewards.
// Keeps track of the liquidity held by each user via StakingRewards.userShare.

contract Liquidity is ILiquidity, StakingRewards
    {
	using SafeERC20 for IERC20;

	IPools immutable public pools;


	constructor( IPools _pools, IExchangeConfig _exchangeConfig, IPoolsConfig _poolsConfig, IStakingConfig _stakingConfig )
		StakingRewards( _exchangeConfig, _poolsConfig, _stakingConfig )
		{
		pools = _pools;
		}


	modifier ensureNotExpired(uint deadline)
		{
		require(block.timestamp <= deadline, "TX EXPIRED");
		_;
		}


	// Deposit an arbitrary amount of one or both tokens into the pool and receive liquidity corresponding the the value of both of them.
	// As the ratio of tokens added to the pool has to be the same as the existing ratio of reserves, some of the excess token will be swapped to the other.
	// Due to precision reduction during zapping calculation, the minimum possible reserves and quantity possible to zap is .000101,
	function _dualZapInLiquidity(IERC20 tokenA, IERC20 tokenB, uint256 zapAmountA, uint256 zapAmountB ) internal returns (uint256 amountForLiquidityA, uint256 amountForLiquidityB  )
		{
		(uint256 reserveA, uint256 reserveB) = pools.getPoolReserves(tokenA, tokenB);
		(uint256 swapAmountA, uint256 swapAmountB ) = PoolMath._determineZapSwapAmount( reserveA, reserveB, zapAmountA, zapAmountB );

		// tokenA is in excess so swap some of it to tokenB?
		if ( swapAmountA > 0)
			{
			// https://github.com/code-423n4/2024-01-salty/blob/main/bot-report.md#l-02
			if ( tokenA.allowance(address(this), address(pools) ) > 0 )
				tokenA.safeApprove( address(pools), 0 );

			tokenA.safeApprove( address(pools), swapAmountA );

			// Swap from tokenA to tokenB and adjust the zapAmounts
			zapAmountA -= swapAmountA;
			zapAmountB += pools.depositZapSwapWithdraw( tokenA, tokenB, swapAmountA );
			}

		// tokenB is in excess so swap some of it to tokenA?
		else if ( swapAmountB > 0)
			{
			// https://github.com/code-423n4/2024-01-salty/blob/main/bot-report.md#l-02
			if ( tokenB.allowance(address(this), address(pools) ) > 0 )
				tokenB.safeApprove( address(pools), 0 );

			tokenB.safeApprove( address(pools), swapAmountB );

			// Swap from tokenB to tokenA and adjust the zapAmounts
			zapAmountB -= swapAmountB;
			zapAmountA += pools.depositZapSwapWithdraw( tokenB, tokenA, swapAmountB );
			}

		return (zapAmountA, zapAmountB);
		}


	// Add a certain amount of liquidity to the specified pool and increase the user's liquidity share for that pool so that they can receive future rewards.
	// With zapping, all the tokens specified by the user are added to the liquidity pool regardless of their ratio.
	// If one of the tokens has excess in regards to the reserves token ratio, then some of it is first swapped for the other before the liquidity is added. (See PoolMath.sol for details)
	// Requires exchange access for the user.
	function depositLiquidityAndIncreaseShare( IERC20 tokenA, IERC20 tokenB, uint256 maxAmountA, uint256 maxAmountB, uint256 minAddedAmountA, uint256 minAddedAmountB, uint256 minAddedLiquidity, uint256 deadline, bool useZapping ) external nonReentrant ensureNotExpired(deadline) returns (uint256 addedLiquidity)
		{
		require( exchangeConfig.walletHasAccess(msg.sender), "Sender does not have exchange access" );

		// Transfer the specified maximum amount of tokens from the user
		tokenA.safeTransferFrom(msg.sender, address(this), maxAmountA );
		tokenB.safeTransferFrom(msg.sender, address(this), maxAmountB );

		// Balance the token amounts by swapping one to the other before adding the liquidity?
		if ( useZapping )
			(maxAmountA, maxAmountB) = _dualZapInLiquidity(tokenA, tokenB, maxAmountA, maxAmountB );

		// Approve the liquidity to add

		// https://github.com/code-423n4/2024-01-salty/blob/main/bot-report.md#l-02
		if ( tokenA.allowance(address(this), address(pools) ) > 0 )
			tokenA.safeApprove(address(pools), 0 );

		if ( tokenB.allowance(address(this), address(pools) ) > 0 )
			tokenB.safeApprove(address(pools), 0 );

		tokenA.safeApprove( address(pools), maxAmountA );
		tokenB.safeApprove( address(pools), maxAmountB );

		uint256 addedAmountA;
		uint256 addedAmountB;

			{
			// Deposit the specified liquidity into the Pools contract
			// The added liquidity will be owned by this contract. (external call to Pools contract)
			bytes32 poolID = PoolUtils._poolID( tokenA, tokenB );

			(addedAmountA, addedAmountB, addedLiquidity) = pools.addLiquidity( tokenA, tokenB, maxAmountA, maxAmountB, minAddedAmountA, minAddedAmountB, totalShares[poolID]);

			// Make sure the user receives a sufficient share of liquidity
			require( addedLiquidity >= minAddedLiquidity, "Insufficient liquidity added" );

			// Increase the user's liquidity share by the amount of addedLiquidity.
			// Cooldown is specified to prevent reward hunting (ie - quickly depositing and withdrawing large amounts of liquidity to snipe rewards as they arrive)
			// _increaseUserShare confirms the pool as whitelisted as well.
			_increaseUserShare( msg.sender, poolID, addedLiquidity, true );
			}

		// If any of the user's tokens were not used, then send them back
		if ( addedAmountA < maxAmountA )
			tokenA.safeTransfer( msg.sender, maxAmountA - addedAmountA );

		if ( addedAmountB < maxAmountB )
			tokenB.safeTransfer( msg.sender, maxAmountB - addedAmountB );
		}


	// Withdraw specified liquidity, decrease the user's liquidity share and claim any pending rewards.
    function withdrawLiquidityAndClaim( IERC20 tokenA, IERC20 tokenB, uint256 liquidityToWithdraw, uint256 minReclaimedA, uint256 minReclaimedB, uint256 deadline ) external nonReentrant ensureNotExpired(deadline) returns (uint256 reclaimedA, uint256 reclaimedB)
		{
		bytes32 poolID = PoolUtils._poolID( tokenA, tokenB );
		require( userShareForPool(msg.sender, poolID) >= liquidityToWithdraw, "Cannot withdraw more than existing user share" );

		// Remove the amount of liquidity specified by the user.
		// The liquidity in the pool is currently owned by this contract. (external call)
		(reclaimedA, reclaimedB) = pools.removeLiquidity( tokenA, tokenB, liquidityToWithdraw, minReclaimedA, minReclaimedB, totalShares[poolID] );

		// Transfer the reclaimed tokens to the user
		tokenA.safeTransfer( msg.sender, reclaimedA );
		tokenB.safeTransfer( msg.sender, reclaimedB );

		// Reduce the user's liquidity share for the specified pool so that they receive less rewards.
		// Cooldown is specified to prevent reward hunting (ie - quickly depositing and withdrawing large amounts of liquidity to snipe rewards)
		// This call will send any pending ZERO token rewards to msg.sender as well.
		_decreaseUserShare( msg.sender, poolID, liquidityToWithdraw, true );
		}
	}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
import "./IPools.sol";


interface IPoolsConfig
	{
	function whitelistPool( IERC20 tokenA, IERC20 tokenB ) external; // onlyOwner
	function unwhitelistPool( IERC20 tokenA, IERC20 tokenB ) external; // onlyOwner
	function changeMaximumWhitelistedPools(bool increase) external; // onlyOwner

	// Views
    function maximumWhitelistedPools() external view returns (uint256);

	function numberOfWhitelistedPools() external view returns (uint256);
	function isWhitelisted( bytes32 poolID ) external view returns (bool);
	function whitelistedPools() external view returns (bytes32[] calldata);
	function underlyingTokenPair( bytes32 poolID ) external view returns (IERC20 tokenA, IERC20 tokenB);

	// Returns true if the token has been whitelisted (meaning it has been pooled with either WETH and ZERO)
	function tokenHasBeenWhitelisted( IERC20 token, IERC20 weth, IERC20 zero ) external view returns (bool);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "openzeppelin-contracts/contracts/finance/VestingWallet.sol";
import "../staking/interfaces/ILiquidity.sol";
import "../launch/interfaces/IInitialDistribution.sol";
import "../rewards/interfaces/IRewardsEmitter.sol";
import "../rewards/interfaces/IZeroRewards.sol";
import "../rewards/interfaces/IEmissions.sol";
import "../interfaces/IAccessManager.sol";
import "../launch/interfaces/IAirdrop.sol";
import "../dao/interfaces/IDAO.sol";
import "../interfaces/IZero.sol";
import "./IUpkeep.sol";


interface IExchangeConfig
	{
	function setContracts( IDAO _dao, IUpkeep _upkeep, IInitialDistribution _initialDistribution, VestingWallet _teamVestingWallet, VestingWallet _daoVestingWallet ) external; // onlyOwner
	function setAccessManager( IAccessManager _accessManager ) external; // onlyOwner

	// Views
	function zero() external view returns (IZero);
	function wbtc() external view returns (IERC20);
	function weth() external view returns (IERC20);
	function usdc() external view returns (IERC20);
	function usdt() external view returns (IERC20);

	function daoVestingWallet() external view returns (VestingWallet);
    function teamVestingWallet() external view returns (VestingWallet);
    function initialDistribution() external view returns (IInitialDistribution);

	function accessManager() external view returns (IAccessManager);
	function dao() external view returns (IDAO);
	function upkeep() external view returns (IUpkeep);
	function teamWallet() external view returns (address);

	function walletHasAccess( address wallet ) external view returns (bool);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;


interface IStakingConfig
	{
	function changeMinUnstakeWeeks(bool increase) external; // onlyOwner
	function changeMaxUnstakeWeeks(bool increase) external; // onlyOwner
	function changeMinUnstakePercent(bool increase) external; // onlyOwner
	function changeModificationCooldown(bool increase) external; // onlyOwner

	// Views
    function minUnstakeWeeks() external view returns (uint256);
    function maxUnstakeWeeks() external view returns (uint256);
    function minUnstakePercent() external view returns (uint256);
    function modificationCooldown() external view returns (uint256);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "../../staking/interfaces/ILiquidity.sol";
import "../../dao/interfaces/IDAO.sol";
import "./IPoolStats.sol";


interface IPools is IPoolStats
	{
	function startExchangeApproved() external;
	function setContracts( IDAO _dao, ILiquidity _liquidity ) external; // onlyOwner

	function addLiquidity( IERC20 tokenA, IERC20 tokenB, uint256 maxAmountA, uint256 maxAmountB, uint256 minAddedAmountA, uint256 minAddedAmountB, uint256 totalLiquidity ) external returns (uint256 addedAmountA, uint256 addedAmountB, uint256 addedLiquidity);
	function removeLiquidity( IERC20 tokenA, IERC20 tokenB, uint256 liquidityToRemove, uint256 minReclaimedA, uint256 minReclaimedB, uint256 totalLiquidity ) external returns (uint256 reclaimedA, uint256 reclaimedB);

	function deposit( IERC20 token, uint256 amount ) external;
	function withdraw( IERC20 token, uint256 amount ) external;
	function swap( IERC20 swapTokenIn, IERC20 swapTokenOut, uint256 swapAmountIn, uint256 minAmountOut, uint256 deadline ) external returns (uint256 swapAmountOut);
	function depositSwapWithdraw(IERC20 swapTokenIn, IERC20 swapTokenOut, uint256 swapAmountIn, uint256 minAmountOut, uint256 deadline ) external returns (uint256 swapAmountOut);
	function depositDoubleSwapWithdraw( IERC20 swapTokenIn, IERC20 swapTokenMiddle, IERC20 swapTokenOut, uint256 swapAmountIn, uint256 minAmountOut, uint256 deadline ) external returns (uint256 swapAmountOut);
	function depositZapSwapWithdraw(IERC20 swapTokenIn, IERC20 swapTokenOut, uint256 swapAmountIn ) external returns (uint256 swapAmountOut);

	// Views
	function exchangeIsLive() external view returns (bool);
	function getPoolReserves(IERC20 tokenA, IERC20 tokenB) external view returns (uint256 reserveA, uint256 reserveB);
	function depositedUserBalance(address user, IERC20 token) external view returns (uint256);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
import "./IStakingRewards.sol";


interface ILiquidity is IStakingRewards
	{
	function depositLiquidityAndIncreaseShare( IERC20 tokenA, IERC20 tokenB, uint256 maxAmountA, uint256 maxAmountB, uint256 minAddedAmountA, uint256 minAddedAmountB, uint256 minAddedLiquidity, uint256 deadline, bool useZapping ) external returns (uint256 addedLiquidity);
	function withdrawLiquidityAndClaim( IERC20 tokenA, IERC20 tokenB, uint256 liquidityToWithdraw, uint256 minReclaimedA, uint256 minReclaimedB, uint256 deadline ) external returns (uint256 reclaimedA, uint256 reclaimedB);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
import "openzeppelin-contracts/contracts/security/ReentrancyGuard.sol";
import "openzeppelin-contracts/contracts/utils/math/Math.sol";
import "../pools/interfaces/IPoolsConfig.sol";
import "../interfaces/IExchangeConfig.sol";
import "./interfaces/IStakingRewards.sol";
import "./interfaces/IStakingConfig.sol";
import "../interfaces/IZero.sol";

// This contract allows users to receive rewards (as ZERO tokens) for staking ZERO or liquidity shares.
// A user's reward is proportional to their share of the stake and is based on their share at the time that rewards are added.
//
// What staked shares represent is specific to the contracts that derive from StakingRewards.
//
// 1. Staking.sol: shares represent the amount of ZERO staked (staked to the STAKED_ZERO pool)
// 2. Liquidity.sol: shares represent the amount of liquidity deposited and staked to specific pools
//
// Regarding virtualRewards: the idea is that the ratio of totalRewards/totalShare before the user increases share needs to equal (totalRewards+virtualRewards)/(totalShare+shareIncrease).
// Namely that the ratio of rewards to shares before and after needs to remain the same. It's akin to a liquidity pool where the two tokens are "rewards" and "shares". When a user want add shares they borrow the rewards needed to create the correct proportion of virtualRewards / addedShares.
// When rewards are added, it increases the value of the shares, in terms of the rewards.
// On claim, users pay back any "borrowed" rewards (the virtual rewards).

abstract contract StakingRewards is IStakingRewards, ReentrancyGuard
    {
	event UserShareIncreased(address indexed wallet, bytes32 indexed poolID, uint256 amountIncreased);
	event UserShareDecreased(address indexed wallet, bytes32 indexed poolID, uint256 amountDecreased, uint256 claimedRewards);
	event RewardsClaimed(address indexed wallet, uint256 claimedRewards);
	event ZeroRewardsAdded(bytes32 indexed poolID, uint256 amountAdded);

	using SafeERC20 for IZero;

	IZero immutable public zero;
	IExchangeConfig immutable public exchangeConfig;
    IStakingConfig immutable public stakingConfig;
    IPoolsConfig immutable public poolsConfig;

	// A nested mapping that stores the UserShareInfo data for each user and each poolID.
	mapping(address=>mapping(bytes32=>UserShareInfo)) private _userShareInfo;

    // A mapping that stores the total pending ZERO rewards for each poolID.
    mapping(bytes32=>uint256) public totalRewards;

    // A mapping that stores the total shares for each poolID.
    mapping(bytes32=>uint256) public totalShares;


	// Constructs a new StakingRewards contract with providing configs
 	constructor( IExchangeConfig _exchangeConfig, IPoolsConfig _poolsConfig, IStakingConfig _stakingConfig )
		{
		exchangeConfig = _exchangeConfig;
    	poolsConfig = _poolsConfig;
		stakingConfig = _stakingConfig;

		zero = _exchangeConfig.zero(); // cached for efficiency
        }


	// Increase a user's share for the given whitelisted pool.
	function _increaseUserShare( address wallet, bytes32 poolID, uint256 increaseShareAmount, bool useCooldown ) internal
		{
		require( poolsConfig.isWhitelisted( poolID ), "Invalid pool" );
		require( increaseShareAmount != 0, "Cannot increase zero share" );

		UserShareInfo storage user = _userShareInfo[wallet][poolID];

		if ( useCooldown )
		if ( msg.sender != address(exchangeConfig.dao()) ) // DAO doesn't use the cooldown
			{
			require( block.timestamp >= user.cooldownExpiration, "Must wait for the cooldown to expire" );

			// Update the cooldown expiration for future transactions
			user.cooldownExpiration = block.timestamp + stakingConfig.modificationCooldown();
			}

		uint256 existingTotalShares = totalShares[poolID];

		// Determine the amount of virtualRewards to add based on the current ratio of rewards/shares.
		// The ratio of virtualRewards/increaseShareAmount is the same as totalRewards/totalShares for the pool.
		// The virtual rewards will be deducted later when calculating the user's owed rewards.
        if ( existingTotalShares != 0 ) // prevent / 0
        	{
			// Round up in favor of the protocol.
			uint256 virtualRewardsToAdd = Math.ceilDiv( totalRewards[poolID] * increaseShareAmount, existingTotalShares );

			user.virtualRewards += virtualRewardsToAdd;
	        totalRewards[poolID] += virtualRewardsToAdd;
	        }

		// Update the deposit balances
		user.userShare += increaseShareAmount;
		totalShares[poolID] = existingTotalShares + increaseShareAmount;

		emit UserShareIncreased(wallet, poolID, increaseShareAmount);
		}


	// Decrease a user's share for the pool and have any pending rewards sent to them.
	// Does not require the pool to be valid (in case the pool was recently unwhitelisted).
	function _decreaseUserShare( address wallet, bytes32 poolID, uint256 decreaseShareAmount, bool useCooldown ) internal
		{
		require( decreaseShareAmount != 0, "Cannot decrease zero share" );

		UserShareInfo storage user = _userShareInfo[wallet][poolID];
		require( decreaseShareAmount <= user.userShare, "Cannot decrease more than existing user share" );

		if ( useCooldown )
		if ( msg.sender != address(exchangeConfig.dao()) ) // DAO doesn't use the cooldown
			{
			require( block.timestamp >= user.cooldownExpiration, "Must wait for the cooldown to expire" );

			// Update the cooldown expiration for future transactions
			user.cooldownExpiration = block.timestamp + stakingConfig.modificationCooldown();
			}

		// Determine the share of the rewards for the amountToDecrease (will include previously added virtual rewards)
		uint256 rewardsForAmount = ( totalRewards[poolID] * decreaseShareAmount ) / totalShares[poolID];

		// For the amountToDecrease determine the proportion of virtualRewards (proportional to all virtualRewards for the user)

		// Round virtualRewardsToRemoveFromClaimable up in favor of the protocol
		uint256 virtualRewardsToRemoveFromClaimable = Math.ceilDiv(user.virtualRewards * decreaseShareAmount,  user.userShare );

		// Round virtualRewardsToRemoveFromUserVirtRewards down in favor of the protocol
		uint256 virtualRewardsToRemoveFromUserVirtRewards = (user.virtualRewards * decreaseShareAmount) / user.userShare;

		// Update totals
		totalRewards[poolID] -= rewardsForAmount;
		totalShares[poolID] -= decreaseShareAmount;

		// Update the user's share and virtual rewards
		user.userShare -= decreaseShareAmount;
		user.virtualRewards -= virtualRewardsToRemoveFromUserVirtRewards;

		uint256 claimableRewards = 0;

		// Some of the rewardsForAmount are actually virtualRewards and can't be claimed.

		// In the event that virtualRewardsToRemoveFromClaimable are greater than actual rewards - claimableRewards will stay zero.
		if ( virtualRewardsToRemoveFromClaimable < rewardsForAmount )
			claimableRewards = rewardsForAmount - virtualRewardsToRemoveFromClaimable;

		// Send the claimable rewards
		if ( claimableRewards != 0 )
			zero.safeTransfer( wallet, claimableRewards );

		emit UserShareDecreased(wallet, poolID, decreaseShareAmount, claimableRewards);
		}


	// ===== PUBLIC FUNCTIONS =====

	// Claim all available ZERO rewards from multiple pools for the user.
	// The claimed rewards are added to the user's virtual rewards balance - so that they can't be claimed again later.
     function claimAllRewards( bytes32[] calldata poolIDs ) external nonReentrant returns (uint256 claimableRewards)
    	{
		mapping(bytes32=>UserShareInfo) storage userInfo = _userShareInfo[msg.sender];

		claimableRewards = 0;
		for( uint256 i = 0; i < poolIDs.length; i++ )
			{
			bytes32 poolID = poolIDs[i];

			uint256 pendingRewards = userRewardForPool( msg.sender, poolID );

			// Increase the virtualRewards balance for the user to account for them receiving the rewards without withdrawing
			userInfo[poolID].virtualRewards += pendingRewards;

			claimableRewards += pendingRewards;
			}

		if ( claimableRewards > 0 )
			{
			// Send the actual rewards
			zero.safeTransfer( msg.sender, claimableRewards );

			emit RewardsClaimed(msg.sender, claimableRewards);
			}
    	}


	// Adds ZERO token rewards for specific whitelisted pools.
	// There is some risk of addZERORewards being frontrun to hunt rewards, but there are multiple mechanisms in place to prevent this from being effective.
	// 1. There is a cooldown period of default one hour before shares can be withdrawn once deposited.
	// 2. Staked ZERO tokens have a default unstake period of 52 weeks.
	// 3. Rewards are first placed into a RewardsEmitter which deposits rewards via addZERORewards at the default rate of 1% per day.
	// 4. Rewards are deposited fairly often, with outstanding rewards being transferred with a frequency proportional to the activity of the exchange.
	// Example: if $100k rewards were being deposited in a bulk transaction, it would only equate to $1000 (1%) the first day,
	// or $10 in claimable rewards during a 15 minute upkeep period.
 	function addZERORewards( AddedReward[] calldata addedRewards ) external nonReentrant
		{
		uint256 sum = 0;
		for( uint256 i = 0; i < addedRewards.length; i++ )
			{
			AddedReward memory addedReward = addedRewards[i];

			bytes32 poolID = addedReward.poolID;
			require( poolsConfig.isWhitelisted( poolID ), "Invalid pool" );

			uint256 amountToAdd = addedReward.amountToAdd;

			totalRewards[ poolID ] += amountToAdd;
			sum = sum + amountToAdd;

			emit ZeroRewardsAdded(poolID, amountToAdd);
			}

		// Transfer in the ZERO tokens for all the specified rewards
		if ( sum > 0 )
			{
			// Transfer the ZERO token rewards from the sender
			zero.safeTransferFrom( msg.sender, address(this), sum );
			}
		}


	// === VIEWS ===

	// Returns the total shares for specified pools.
	function totalSharesForPools( bytes32[] calldata poolIDs ) external view returns (uint256[] memory shares)
		{
		shares = new uint256[]( poolIDs.length );

		for( uint256 i = 0; i < shares.length; i++ )
			shares[i] = totalShares[ poolIDs[i] ];
		}


	// Returns the total rewards for specified pools.
	function totalRewardsForPools( bytes32[] calldata poolIDs ) external view returns (uint256[] memory rewards)
		{
		rewards = new uint256[]( poolIDs.length );

		for( uint256 i = 0; i < rewards.length; i++ )
			rewards[i] = totalRewards[ poolIDs[i] ];
		}


	// Returns the user's pending rewards for a specified pool.
	function userRewardForPool( address wallet, bytes32 poolID ) public view returns (uint256)
		{
		// If there are no shares for the pool, the user can't have any shares either and there can't be any rewards
		if ( totalShares[poolID] == 0 )
			return 0;

		UserShareInfo memory user = _userShareInfo[wallet][poolID];
		if ( user.userShare == 0 )
			return 0;

		// Determine the share of the rewards for the user based on their deposited share
		uint256 rewardsShare = ( totalRewards[poolID] * user.userShare ) / totalShares[poolID];

		// Reduce by the virtualRewards - as they were only added to keep the share / rewards ratio the same when the used added their share

		// In the event that virtualRewards exceeds rewardsShare due to precision loss - just return zero
		if ( user.virtualRewards > rewardsShare )
			return 0;

		return rewardsShare - user.virtualRewards;
		}


	// Returns the user's pending rewards for specified pools.
	function userRewardsForPools( address wallet, bytes32[] calldata poolIDs ) external view returns (uint256[] memory rewards)
		{
		rewards = new uint256[]( poolIDs.length );

		for( uint256 i = 0; i < rewards.length; i++ )
			rewards[i] = userRewardForPool( wallet, poolIDs[i] );
		}


	// Get the user's shares for a specified pool.
	function userShareForPool( address wallet, bytes32 poolID ) public view returns (uint256)
		{
		return _userShareInfo[wallet][poolID].userShare;
		}


	// Get the user's shares for specified pools.
	function userShareForPools( address wallet, bytes32[] calldata poolIDs ) external view returns (uint256[] memory shares)
		{
		shares = new uint256[]( poolIDs.length );

		for( uint256 i = 0; i < shares.length; i++ )
			shares[i] = _userShareInfo[wallet][ poolIDs[i] ].userShare;
		}


	// Get the user's virtual rewards for a specified pool.
	function userVirtualRewardsForPool( address wallet, bytes32 poolID ) public view returns (uint256)
		{
		return _userShareInfo[wallet][poolID].virtualRewards;
		}


	// Get the cooldown time remaining for the user for specified pools.
	function userCooldowns( address wallet, bytes32[] calldata poolIDs ) external view returns (uint256[] memory cooldowns)
		{
		cooldowns = new uint256[]( poolIDs.length );

		mapping(bytes32=>UserShareInfo) storage userInfo = _userShareInfo[wallet];

		for( uint256 i = 0; i < cooldowns.length; i++ )
			{
			uint256 cooldownExpiration = userInfo[ poolIDs[i] ].cooldownExpiration;

			if ( block.timestamp >= cooldownExpiration )
				cooldowns[i] = 0;
			else
				cooldowns[i] = cooldownExpiration - block.timestamp;
			}
		}
	}

pragma solidity =0.8.22;

import "openzeppelin-contracts/contracts/utils/math/Math.sol";
import "./PoolUtils.sol";

/*
	=== DERIVATION ===
	// User will zap z0 of token0 and z1 of token1 into the pool
    // Initial reserves: r0 and r1
    // Assuming z0 in excess, determine how much z0 should be swapped to z1 first so that the resulting z0/z1 matches the resulting post-swap reserves ratio so that liquidity can be added with minimal leftover.

    // Initial k
    k = r0 * r1

    // Swap s0 of token0 for s1 of token1
    s1 = r1 - k / (r0 + s0)

    // Substituting k
    s1 = r1 - r0 * r1 / (r0 + s0)

    // Updated reserves ratio after swap
    (r0 + s0) / ( r1 - s1)

    // Adjusted addLiquidity zap amounts after the swap
    a0 = z0 - s0
    a1 = z1 + s1

    // Adjusted addLiquidity amounts need to have the token ratio of the current reserves
    a0 / a1 = (r0 + s0) / ( r1 - s1)

    // Substitute in a0 and a1 from above
    (z0 - s0) / ( z1 + s1) = (r0 + s0) / ( r1 - s1)

    // Substitute
    x = s0         y = s1
    a = r0         b = r1
    c = z0         d = z1

    (c-x)/(d+y) = (a+x)/(b-y)

    // From s1 = r1 - r0 * r1 / (r0 + s0)
    y = b - ab/(a+x)

    // Solve for x
    (c-x)/(d+y) = (a+x)/(b-y)

    // Cross multiply
    (c-x)(b-y) = (a+x)(d+y)

    // Multiply binomials on both sides
    bc - cy - bx + xy = ad + ay + dx + xy

    // Cancel xy both sides
    bc - cy - bx = ad + ay + dx

    // Multiply both sides by -1
    - bc + cy + bx = - ad - ay - dx

    // Gather x and y on the left
    bx + dx + ay + cy = bc - ad

    // Factor x and y
    x(b+d) + y(a+c) = bc - ad

    // Substitute y = b - ab/(a+x)
    x(b+d) + b(a+c) - ab(a+c)/(a+x) = bc - ad

    // Multiply by (a+x)
    x(b+d)(a+x) + b(a+c)(a+x) - ab(a+c) = (bc - ad)(a+x)

    // Multiply all binomials
    x(ab+bx+ad+dx) + b(aa+ax+ac+cx) - aab - abc = abc+bcx-aad-adx

    // Distribute x and b
    abx+bxx+adx+dxx + aab+abx+abc+bcx - aab - abc = abc+bcx-aad-adx

    // Cancel abc (on left), bcx, aab
    abx + bxx + adx + dxx + abx = abc - aad - adx

    // Gather x on the left
    bxx + dxx + abx + abx + adx + adx = abc - aad

    // Factor xx and x
    xx(b+d) + x(2ab + 2ad) = abc - aad

    // Quadratic equation
    xx(b+d) + x(2ab + 2ad) + (aad-abc) = 0

    // Factor out 2a
    xx(b+d) + x(2a)(b+d) + (aad-abc) = 0

    // Divide by (b+d)
    xx + x(2a) + (aad-abc)/(b+d) = 0

    xxA + xB + C = 0

    A = 1
    B = 2a
    C = a(ad - bc)/(b+d)

    // Substitute back
    a = r0         b = r1
    c = z0         d = z1

    A = 1
    B = 2r0
    C = r0(r0z1 - r1z0)/(r1 + z1)

    x = [-B + sqrt(B^2 - 4AC)] / 2A
*/

library PoolMath
	{
	// Given initial reserves, and that the user wants to zap specified token amounts into the pool as liquidity,
	// determine how much of token0 needs to be swapped to token1 such that the liquidity added has the same proportion as the reserves in the pool after that swap.
	// Assumes that token0 is in excess (in regards to the current reserve ratio).
    function _zapSwapAmount( uint256 r0, uint256 r1, uint256 z0, uint256 z1 ) internal pure returns (uint256 swapAmount)
    	{
		// In order to swap and zap, require that the reduced reserves and one of the zapAmounts exceed DUST.
        if ( r0 < PoolUtils.DUST)
        	return 0;

        if ( r1 < PoolUtils.DUST)
        	return 0;

        if ( z0 < PoolUtils.DUST)
        if ( z1 < PoolUtils.DUST)
        	return 0;

        // Components of the quadratic formula mentioned in the initial comment block: x = [-B + sqrt(B^2 - 4AC)] / 2A
		uint256 A = 1;
        uint256 B = 2 * r0;

		// Here for reference
//        uint256 C = r0 * ( r0 * z1 - r1 * z0 ) / ( r1 + z1 );
//        uint256 discriminant = B * B - 4 * A * C;

		// Negate C (from above) and add instead of subtract.
		// r1 * z0 guaranteed to be greater than r0 * z1 per the conditional check in _determineZapSwapAmount
		// Divide by (r1 + z1) before multiplying by r0 to keep the max value within uint256
        uint256 C = r0 * ( ( r1 * z0 - r0 * z1 ) / ( r1 + z1 ) );
        uint256 discriminant = B * B + 4 * A * C;

        // Compute the square root of the discriminant.
        uint256 sqrtDiscriminant = Math.sqrt(discriminant);

		// Safety check: make sure B is not greater than sqrtDiscriminant
		if ( B > sqrtDiscriminant )
			return 0;

        // Only use the positive sqrt of the discriminant from: x = (-B +/- sqrtDiscriminant) / 2A
		swapAmount = ( sqrtDiscriminant - B ) / ( 2 * A );
    	}


	// Determine how much of either token needs to be swapped to give them a ratio equivalent to the reserves.
	// If (0,0) is returned it signifies that no swap should be done before the addLiquidity.
	function _determineZapSwapAmount( uint256 reserveA, uint256 reserveB, uint256 zapAmountA, uint256 zapAmountB ) internal pure returns (uint256 swapAmountA, uint256 swapAmountB )
		{
		// zapAmountA / zapAmountB exceeds the ratio of reserveA / reserveB? - meaning too much zapAmountA
		if ( zapAmountA * reserveB > reserveA * zapAmountB )
			(swapAmountA, swapAmountB) = (_zapSwapAmount( reserveA, reserveB, zapAmountA, zapAmountB ), 0);

		// zapAmountA / zapAmountB is less than the ratio of reserveA / reserveB? - meaning too much zapAmountB
		if ( zapAmountA * reserveB < reserveA * zapAmountB )
			(swapAmountA, swapAmountB) = (0, _zapSwapAmount( reserveB, reserveA, zapAmountB, zapAmountA ));

		// Ensure we are not swapping more than was specified for zapping
		if ( ( swapAmountA > zapAmountA ) || ( swapAmountB > zapAmountB ) )
			return (0, 0);

		return (swapAmountA, swapAmountB);
		}
	}

pragma solidity =0.8.22;

import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";


library PoolUtils
	{
	// Token reserves less than dust are treated as if they don't exist at all.
	// With the 18 decimals that are used for most tokens, DUST has a value of 0.0000000000000001
	uint256 constant public DUST = 100;

	// A special pool that represents staked ZERO tokens that are not associated with any actual liquidity pool.
    bytes32 constant public STAKED_ZERO = bytes32(0);


    // Return the unique poolID for the given two tokens.
    // Tokens are sorted before being hashed to make reversed pairs equivalent.
    function _poolID( IERC20 tokenA, IERC20 tokenB ) internal pure returns (bytes32 poolID)
    	{
        // See if the token orders are flipped
        if ( uint160(address(tokenB)) < uint160(address(tokenA)) )
            return keccak256(abi.encodePacked(address(tokenB), address(tokenA)));

        return keccak256(abi.encodePacked(address(tokenA), address(tokenB)));
    	}


    // Return the unique poolID and whether or not it is flipped
    function _poolIDAndFlipped( IERC20 tokenA, IERC20 tokenB ) internal pure returns (bytes32 poolID, bool flipped)
    	{
        // See if the token orders are flipped
        if ( uint160(address(tokenB)) < uint160(address(tokenA)) )
            return (keccak256(abi.encodePacked(address(tokenB), address(tokenA))), true);

        return (keccak256(abi.encodePacked(address(tokenA), address(tokenB))), false);
    	}
	}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @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 amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves `amount` 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 amount) 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 `amount` 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 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` 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 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @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;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (finance/VestingWallet.sol)
pragma solidity ^0.8.0;

import "../token/ERC20/utils/SafeERC20.sol";
import "../utils/Address.sol";
import "../utils/Context.sol";

/**
 * @title VestingWallet
 * @dev This contract handles the vesting of Eth and ERC20 tokens for a given beneficiary. Custody of multiple tokens
 * can be given to this contract, which will release the token to the beneficiary following a given vesting schedule.
 * The vesting schedule is customizable through the {vestedAmount} function.
 *
 * Any token transferred to this contract will follow the vesting schedule as if they were locked from the beginning.
 * Consequently, if the vesting has already started, any amount of tokens sent to this contract will (at least partly)
 * be immediately releasable.
 */
contract VestingWallet is Context {
    event EtherReleased(uint256 amount);
    event ERC20Released(address indexed token, uint256 amount);

    uint256 private _released;
    mapping(address => uint256) private _erc20Released;
    address private immutable _beneficiary;
    uint64 private immutable _start;
    uint64 private immutable _duration;

    /**
     * @dev Set the beneficiary, start timestamp and vesting duration of the vesting wallet.
     */
    constructor(address beneficiaryAddress, uint64 startTimestamp, uint64 durationSeconds) payable {
        require(beneficiaryAddress != address(0), "VestingWallet: beneficiary is zero address");
        _beneficiary = beneficiaryAddress;
        _start = startTimestamp;
        _duration = durationSeconds;
    }

    /**
     * @dev The contract should be able to receive Eth.
     */
    receive() external payable virtual {}

    /**
     * @dev Getter for the beneficiary address.
     */
    function beneficiary() public view virtual returns (address) {
        return _beneficiary;
    }

    /**
     * @dev Getter for the start timestamp.
     */
    function start() public view virtual returns (uint256) {
        return _start;
    }

    /**
     * @dev Getter for the vesting duration.
     */
    function duration() public view virtual returns (uint256) {
        return _duration;
    }

    /**
     * @dev Amount of eth already released
     */
    function released() public view virtual returns (uint256) {
        return _released;
    }

    /**
     * @dev Amount of token already released
     */
    function released(address token) public view virtual returns (uint256) {
        return _erc20Released[token];
    }

    /**
     * @dev Getter for the amount of releasable eth.
     */
    function releasable() public view virtual returns (uint256) {
        return vestedAmount(uint64(block.timestamp)) - released();
    }

    /**
     * @dev Getter for the amount of releasable `token` tokens. `token` should be the address of an
     * IERC20 contract.
     */
    function releasable(address token) public view virtual returns (uint256) {
        return vestedAmount(token, uint64(block.timestamp)) - released(token);
    }

    /**
     * @dev Release the native token (ether) that have already vested.
     *
     * Emits a {EtherReleased} event.
     */
    function release() public virtual {
        uint256 amount = releasable();
        _released += amount;
        emit EtherReleased(amount);
        Address.sendValue(payable(beneficiary()), amount);
    }

    /**
     * @dev Release the tokens that have already vested.
     *
     * Emits a {ERC20Released} event.
     */
    function release(address token) public virtual {
        uint256 amount = releasable(token);
        _erc20Released[token] += amount;
        emit ERC20Released(token, amount);
        SafeERC20.safeTransfer(IERC20(token), beneficiary(), amount);
    }

    /**
     * @dev Calculates the amount of ether that has already vested. Default implementation is a linear vesting curve.
     */
    function vestedAmount(uint64 timestamp) public view virtual returns (uint256) {
        return _vestingSchedule(address(this).balance + released(), timestamp);
    }

    /**
     * @dev Calculates the amount of tokens that has already vested. Default implementation is a linear vesting curve.
     */
    function vestedAmount(address token, uint64 timestamp) public view virtual returns (uint256) {
        return _vestingSchedule(IERC20(token).balanceOf(address(this)) + released(token), timestamp);
    }

    /**
     * @dev Virtual implementation of the vesting formula. This returns the amount vested, as a function of time, for
     * an asset given its total historical allocation.
     */
    function _vestingSchedule(uint256 totalAllocation, uint64 timestamp) internal view virtual returns (uint256) {
        if (timestamp < start()) {
            return 0;
        } else if (timestamp > start() + duration()) {
            return totalAllocation;
        } else {
            return (totalAllocation * (timestamp - start())) / duration();
        }
    }
}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "./IBootstrapBallot.sol";
import "./IAirdrop.sol";


interface IInitialDistribution
	{
	function distributionApproved( IAirdrop airdrop1, IAirdrop airdrop2 ) external;

	// Views
	function bootstrapBallot() external view returns (IBootstrapBallot);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "../../staking/interfaces/IStakingRewards.sol";


interface IRewardsEmitter
	{
	function addZERORewards( AddedReward[] calldata addedRewards ) external;
	function performUpkeep( uint256 timeSinceLastUpkeep ) external;

	// Views
	function pendingRewardsForPools( bytes32[] calldata pools ) external view returns (uint256[] calldata);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "./IRewardsEmitter.sol";


interface IZeroRewards
	{
	function sendInitialZERORewards( uint256 liquidityBootstrapAmount, bytes32[] calldata poolIDs ) external;
    function performUpkeep( bytes32[] calldata poolIDs, uint256[] calldata profitsForPools ) external;

    // Views
    function stakingRewardsEmitter() external view returns (IRewardsEmitter);
    function liquidityRewardsEmitter() external view returns (IRewardsEmitter);
    }

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;


interface IEmissions
	{
	function performUpkeep( uint256 timeSinceLastUpkeep ) external;
    }

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;


interface IAccessManager
	{
	function excludedCountriesUpdated() external;
	function grantAccess(bytes calldata signature) external;

	// Views
	function geoVersion() external view returns (uint256);
	function walletHasAccess(address wallet) external view returns (bool);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;


interface IAirdrop
	{
	function authorizeWallet( address wallet, uint256 zeroAmount ) external;
	function allowClaiming() external;
	function claim() external;

	// Views
	function claimedByUser( address wallet) external view returns (uint256);
	function claimingAllowed() external view returns (bool);
	function claimingStartTimestamp() external view returns (uint256);
	function claimableAmount(address wallet) external view returns (uint256);
    function airdropForUser( address wallet ) external view returns (uint256);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "../../rewards/interfaces/IZeroRewards.sol";
import "../../pools/interfaces/IPools.sol";
import "../../interfaces/IZero.sol";

interface IDAO
	{
	function finalizeBallot( uint256 ballotID ) external;
	function manuallyRemoveBallot( uint256 ballotID ) external;

	function withdrawFromDAO( IERC20 token ) external returns (uint256 withdrawnAmount);

	// Views
	function pools() external view returns (IPools);
	function websiteURL() external view returns (string memory);
	function countryIsExcluded( string calldata country ) external view returns (bool);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;

import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";


interface IZero is IERC20
	{
	function burnTokensInContract() external;

	// Views
	function totalBurned() external view returns (uint256);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;


interface IUpkeep
	{
	function performUpkeep() external;

	// Views
	function currentRewardsForCallingPerformUpkeep() external view returns (uint256);
	function lastUpkeepTimeEmissions() external view returns (uint256);
	function lastUpkeepTimeRewardsEmitters() external view returns (uint256);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;


interface IPoolStats
	{
	// These are the indicies (in terms of a poolIDs location in the current whitelistedPoolIDs array) of pools involved in an arbitrage path
	struct ArbitrageIndicies
		{
		uint64 index1;
		uint64 index2;
		uint64 index3;
		}

	function clearProfitsForPools() external;
	function updateArbitrageIndicies() external;

	// Views
	function profitsForWhitelistedPools() external view returns (uint256[] memory _calculatedProfits);
	function arbitrageIndicies(bytes32 poolID) external view returns (ArbitrageIndicies memory);
	}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;


struct AddedReward
	{
	bytes32 poolID;							// The pool to add rewards to
	uint256 amountToAdd;				// The amount of rewards (as ZERO) to add
	}

struct UserShareInfo
	{
	uint256 userShare;					// A user's share for a given poolID
	uint256 virtualRewards;				// The amount of rewards that were added to maintain proper rewards/share ratio - and will be deducted from a user's pending rewards.
	uint256 cooldownExpiration;		// The timestamp when the user can modify their share
	}


interface IStakingRewards
	{
	function claimAllRewards( bytes32[] calldata poolIDs ) external returns (uint256 rewardsAmount);
	function addZERORewards( AddedReward[] calldata addedRewards ) external;

	// Views
	function totalShares(bytes32 poolID) external view returns (uint256);
	function totalSharesForPools( bytes32[] calldata poolIDs ) external view returns (uint256[] calldata shares);
	function totalRewardsForPools( bytes32[] calldata poolIDs ) external view returns (uint256[] calldata rewards);

	function userRewardForPool( address wallet, bytes32 poolID ) external view returns (uint256);
	function userShareForPool( address wallet, bytes32 poolID ) external view returns (uint256);
	function userVirtualRewardsForPool( address wallet, bytes32 poolID ) external view returns (uint256);

	function userRewardsForPools( address wallet, bytes32[] calldata poolIDs ) external view returns (uint256[] calldata rewards);
	function userShareForPools( address wallet, bytes32[] calldata poolIDs ) external view returns (uint256[] calldata shares);
	function userCooldowns( address wallet, bytes32[] calldata poolIDs ) external view returns (uint256[] calldata cooldowns);
	}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// 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;
    }
}

// SPDX-License-Identifier: BUSL 1.1
pragma solidity =0.8.22;


interface IBootstrapBallot
	{
	function vote( bool voteStartExchangeYes, uint256 zeroAmount, bytes calldata signature ) external;
	function finalizeBallot() external;

	function authorizeAirdrop2( uint256 zeroAmount, bytes calldata signature ) external;
	function finalizeAirdrop2() external;

	// Views
	function claimableTimestamp1() external view returns (uint256);
	function claimableTimestamp2() external view returns (uint256);

	function hasVoted(address user) external view returns (bool);
	function ballotFinalized() external view returns (bool);

	function startExchangeYes() external view returns (uint256);
	function startExchangeNo() external view returns (uint256);
	}

{
  "remappings": [
    "chainlink/=lib/chainlink/",
    "ds-test/=lib/openzeppelin-contracts/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=lib/openzeppelin-contracts/lib/forge-std/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/",
    "v3-core/=lib/v3-core/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IPools","name":"_pools","type":"address"},{"internalType":"contract IExchangeConfig","name":"_exchangeConfig","type":"address"},{"internalType":"contract IPoolsConfig","name":"_poolsConfig","type":"address"},{"internalType":"contract IStakingConfig","name":"_stakingConfig","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"wallet","type":"address"},{"indexed":false,"internalType":"uint256","name":"claimedRewards","type":"uint256"}],"name":"RewardsClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"wallet","type":"address"},{"indexed":true,"internalType":"bytes32","name":"poolID","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"amountDecreased","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"claimedRewards","type":"uint256"}],"name":"UserShareDecreased","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"wallet","type":"address"},{"indexed":true,"internalType":"bytes32","name":"poolID","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"amountIncreased","type":"uint256"}],"name":"UserShareIncreased","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"poolID","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"amountAdded","type":"uint256"}],"name":"ZeroRewardsAdded","type":"event"},{"inputs":[{"components":[{"internalType":"bytes32","name":"poolID","type":"bytes32"},{"internalType":"uint256","name":"amountToAdd","type":"uint256"}],"internalType":"struct AddedReward[]","name":"addedRewards","type":"tuple[]"}],"name":"addZERORewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"poolIDs","type":"bytes32[]"}],"name":"claimAllRewards","outputs":[{"internalType":"uint256","name":"claimableRewards","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"tokenA","type":"address"},{"internalType":"contract IERC20","name":"tokenB","type":"address"},{"internalType":"uint256","name":"maxAmountA","type":"uint256"},{"internalType":"uint256","name":"maxAmountB","type":"uint256"},{"internalType":"uint256","name":"minAddedAmountA","type":"uint256"},{"internalType":"uint256","name":"minAddedAmountB","type":"uint256"},{"internalType":"uint256","name":"minAddedLiquidity","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bool","name":"useZapping","type":"bool"}],"name":"depositLiquidityAndIncreaseShare","outputs":[{"internalType":"uint256","name":"addedLiquidity","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"exchangeConfig","outputs":[{"internalType":"contract IExchangeConfig","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pools","outputs":[{"internalType":"contract IPools","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolsConfig","outputs":[{"internalType":"contract IPoolsConfig","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stakingConfig","outputs":[{"internalType":"contract IStakingConfig","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"totalRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"poolIDs","type":"bytes32[]"}],"name":"totalRewardsForPools","outputs":[{"internalType":"uint256[]","name":"rewards","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"totalShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"poolIDs","type":"bytes32[]"}],"name":"totalSharesForPools","outputs":[{"internalType":"uint256[]","name":"shares","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"bytes32[]","name":"poolIDs","type":"bytes32[]"}],"name":"userCooldowns","outputs":[{"internalType":"uint256[]","name":"cooldowns","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"bytes32","name":"poolID","type":"bytes32"}],"name":"userRewardForPool","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"bytes32[]","name":"poolIDs","type":"bytes32[]"}],"name":"userRewardsForPools","outputs":[{"internalType":"uint256[]","name":"rewards","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"bytes32","name":"poolID","type":"bytes32"}],"name":"userShareForPool","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"bytes32[]","name":"poolIDs","type":"bytes32[]"}],"name":"userShareForPools","outputs":[{"internalType":"uint256[]","name":"shares","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"bytes32","name":"poolID","type":"bytes32"}],"name":"userVirtualRewardsForPool","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"tokenA","type":"address"},{"internalType":"contract IERC20","name":"tokenB","type":"address"},{"internalType":"uint256","name":"liquidityToWithdraw","type":"uint256"},{"internalType":"uint256","name":"minReclaimedA","type":"uint256"},{"internalType":"uint256","name":"minReclaimedB","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"withdrawLiquidityAndClaim","outputs":[{"internalType":"uint256","name":"reclaimedA","type":"uint256"},{"internalType":"uint256","name":"reclaimedB","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"zero","outputs":[{"internalType":"contract IZero","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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0000000000000000000000003a07ffb529c1f4efe2bb3613e2419a149c357110000000000000000000000000f2fed4a7a8d1cc2db73ae0439e07db21d0d58bd90000000000000000000000000ac992636f863504039a028a6e9a2c192529c4870000000000000000000000001e1abc5affa2fadbdf8c10cfa4c432e6f6b674de

-----Decoded View---------------
Arg [0] : _pools (address): 0x3A07FfB529C1f4EfE2Bb3613e2419a149c357110
Arg [1] : _exchangeConfig (address): 0xF2fEd4a7a8D1CC2dB73AE0439E07db21D0D58bD9
Arg [2] : _poolsConfig (address): 0x0aC992636f863504039A028A6E9a2c192529c487
Arg [3] : _stakingConfig (address): 0x1E1aBC5aFFA2FadBDf8c10CfA4C432E6f6B674De

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000003a07ffb529c1f4efe2bb3613e2419a149c357110
Arg [1] : 000000000000000000000000f2fed4a7a8d1cc2db73ae0439e07db21d0d58bd9
Arg [2] : 0000000000000000000000000ac992636f863504039a028a6e9a2c192529c487
Arg [3] : 0000000000000000000000001e1abc5affa2fadbdf8c10cfa4c432e6f6b674de