// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

interface IV2x {
    event AccountLiquidated(address indexed account, uint256 snxRedeemed, uint256 amountLiquidated, address liquidator);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event AtomicSynthExchange(address indexed account, bytes32 fromCurrencyKey, uint256 fromAmount, bytes32 toCurrencyKey, uint256 toAmount, address toAddress);
    event CacheUpdated(bytes32 name, address destination);
    event ExchangeRebate(address indexed account, bytes32 currencyKey, uint256 amount);
    event ExchangeReclaim(address indexed account, bytes32 currencyKey, uint256 amount);
    event ExchangeTracking(bytes32 indexed trackingCode, bytes32 toCurrencyKey, uint256 toAmount, uint256 fee);
    event OwnerChanged(address oldOwner, address newOwner);
    event OwnerNominated(address newOwner);
    event ProxyUpdated(address proxyAddress);
    event SynthExchange(address indexed account, bytes32 fromCurrencyKey, uint256 fromAmount, bytes32 toCurrencyKey, uint256 toAmount, address toAddress);
    event TokenStateUpdated(address newTokenState);
    event Transfer(address indexed from, address indexed to, uint256 value);
    function CONTRACT_NAME() external view returns (bytes32);
    function DECIMALS() external view returns (uint8);
    function TOKEN_NAME() external view returns (string memory);
    function TOKEN_SYMBOL() external view returns (string memory);
    function acceptOwnership() external;
    function allowance(address owner, address spender) external view returns (uint256);
    function anySynthOrSNXRateIsInvalid() external view returns (bool anyRateInvalid);
    function approve(address spender, uint256 value) external returns (bool);
    function availableCurrencyKeys() external view returns (bytes32[] memory);
    function availableSynthCount() external view returns (uint256);
    function availableSynths(uint256 index) external view returns (address);
    function balanceOf(address account) external view returns (uint256);
    function burnSecondary(address, uint256) external;
    function burnSynths(uint256 amount) external;
    function burnSynthsOnBehalf(address burnForAddress, uint256 amount) external;
    function burnSynthsToTarget() external;
    function burnSynthsToTargetOnBehalf(address burnForAddress) external;
    function collateral(address account) external view returns (uint256);
    function collateralisationRatio(address _issuer) external view returns (uint256);
    function debtBalanceOf(address account, bytes32 currencyKey) external view returns (uint256);
    function decimals() external view returns (uint8);
    function emitAtomicSynthExchange(address account, bytes32 fromCurrencyKey, uint256 fromAmount, bytes32 toCurrencyKey, uint256 toAmount, address toAddress) external;
    function emitExchangeRebate(address account, bytes32 currencyKey, uint256 amount) external;
    function emitExchangeReclaim(address account, bytes32 currencyKey, uint256 amount) external;
    function emitExchangeTracking(bytes32 trackingCode, bytes32 toCurrencyKey, uint256 toAmount, uint256 fee) external;
    function emitSynthExchange(address account, bytes32 fromCurrencyKey, uint256 fromAmount, bytes32 toCurrencyKey, uint256 toAmount, address toAddress) external;
    function exchange(bytes32 sourceCurrencyKey, uint256 sourceAmount, bytes32 destinationCurrencyKey) external returns (uint256 amountReceived);
    function exchangeAtomically(bytes32 sourceCurrencyKey, uint256 sourceAmount, bytes32 destinationCurrencyKey, bytes32 trackingCode, uint256 minAmount) external returns (uint256 amountReceived);
    function exchangeOnBehalf(address exchangeForAddress, bytes32 sourceCurrencyKey, uint256 sourceAmount, bytes32 destinationCurrencyKey) external returns (uint256 amountReceived);
    function exchangeOnBehalfWithTracking(address exchangeForAddress, bytes32 sourceCurrencyKey, uint256 sourceAmount, bytes32 destinationCurrencyKey, address rewardAddress, bytes32 trackingCode) external returns (uint256 amountReceived);
    function exchangeWithTracking(bytes32 sourceCurrencyKey, uint256 sourceAmount, bytes32 destinationCurrencyKey, address rewardAddress, bytes32 trackingCode) external returns (uint256 amountReceived);
    function exchangeWithTrackingForInitiator(bytes32 sourceCurrencyKey, uint256 sourceAmount, bytes32 destinationCurrencyKey, address rewardAddress, bytes32 trackingCode) external returns (uint256 amountReceived);
    function exchangeWithVirtual(bytes32 sourceCurrencyKey, uint256 sourceAmount, bytes32 destinationCurrencyKey, bytes32 trackingCode) external returns (uint256 amountReceived, address vSynth);
    function getFirstNonZeroEscrowIndex(address account) external view returns (uint256);
    function isResolverCached() external view returns (bool);
    function isWaitingPeriod(bytes32 currencyKey) external view returns (bool);
    function issueMaxSynths() external;
    function issueMaxSynthsOnBehalf(address issueForAddress) external;
    function issueSynths(uint256 amount) external;
    function issueSynthsOnBehalf(address issueForAddress, uint256 amount) external;
    function liquidateDelinquentAccount(address account) external returns (bool);
    function liquidateDelinquentAccountEscrowIndex(address account, uint256 escrowStartIndex) external returns (bool);
    function liquidateSelf() external returns (bool);
    function maxIssuableSynths(address account) external view returns (uint256 maxIssuable);
    function messageSender() external view returns (address);
    function migrateAccountBalances(address account) external returns (uint256 totalEscrowRevoked, uint256 totalLiquidBalance);
    function migrateEscrowBalanceToRewardEscrowV2() external;
    function migrateEscrowContractBalance() external;
    function mint() external returns (bool);
    function mintSecondary(address, uint256) external;
    function mintSecondaryRewards(uint256) external;
    function name() external view returns (string memory);
    function nominateNewOwner(address _owner) external;
    function nominatedOwner() external view returns (address);
    function owner() external view returns (address);
    function proxy() external view returns (address);
    function rebuildCache() external;
    function remainingIssuableSynths(address account) external view returns (uint256 maxIssuable, uint256 alreadyIssued, uint256 totalSystemDebt);
    function resolver() external view returns (address);
    function resolverAddressesRequired() external view returns (bytes32[] memory addresses);
    function sUSD() external view returns (bytes32);
    function setMessageSender(address sender) external;
    function setProxy(address _proxy) external;
    function setTokenState(address _tokenState) external;
    function settle(bytes32 currencyKey) external returns (uint256 reclaimed, uint256 refunded, uint256 numEntriesSettled);
    function symbol() external view returns (string memory);
    function synths(bytes32 currencyKey) external view returns (address);
    function synthsByAddress(address synthAddress) external view returns (bytes32);
    function tokenState() external view returns (address);
    function totalIssuedSynths(bytes32 currencyKey) external view returns (uint256);
    function totalIssuedSynthsExcludeOtherCollateral(bytes32 currencyKey) external view returns (uint256);
    function totalSupply() external view returns (uint256);
    function transfer(address to, uint256 value) external returns (bool);
    function transferFrom(address from, address to, uint256 value) external returns (bool);
    function transferableSynthetix(address account) external view returns (uint256 transferable);
}