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// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity ^0.7.6;
pragma abicoder v2;

import "./interfaces/IPoolMaster.sol";
import "./interfaces/IPoolFactory.sol";

import "./libraries/external/Ownable.sol";

/// @notice The pool master manages swap fees for pools, whitelist for factories,
/// protocol fee and pool registry.
///
/// It accepts pool registers from whitelisted factories, with the pool data on pool
/// creation, to enable querying of the existence or fees of a pool by address or config.
///
/// This contract provides a unified interface to query and manage fees across
/// different pool types, and a unique registry for all pools.
///
contract SyncSwapPoolMaster is IPoolMaster, Ownable {

    address public override wETH;

    /// @dev The registry of forwarder.
    address public forwarderRegistry;

    /// @dev The fee manager.
    address public override feeManager;

    /// @dev Whether an address is a factory.
    mapping(address => bool) public override isFactoryWhitelisted;

    /// @dev Whether an address is a pool.
    mapping(address => bool) public override isPool;

    /// @dev Pools by hash of its config.
    mapping(bytes32 => address) public override getPool;

    struct PoolInfo {
        address pool;
        uint16 poolType;
    }
    mapping(address => mapping(address => PoolInfo[])) public pairPools;

    address[] public override pools;

    constructor(address _wETH, address _forwarderRegistry, address _feeManager) {
        wETH = _wETH;
        forwarderRegistry = _forwarderRegistry;
        feeManager = _feeManager;
    }

    function poolsLength() external view override returns (uint) {
        return pools.length;
    }

    function _hashPoolConfig(uint16 poolType, address token0, address token1) private pure returns (bytes32 hash) {
        hash = keccak256(abi.encode(poolType, token0, token1));
    }

    function _sortTokens(address tokenA, address tokenB) private pure returns (address token0, address token1) {
        if (tokenA < tokenB) {
            (token0, token1) = (tokenA, tokenB);
        } else {
            (token0, token1) = (tokenB, tokenA);
        }
    }

    function getPoolByTokens(uint16 poolType, address tokenA, address tokenB) external view returns (address) {
        (tokenA, tokenB) = _sortTokens(tokenA, tokenB);
        return getPool[_hashPoolConfig(poolType, tokenA, tokenB)];
    }

    function pairPoolsLength(address tokenA, address tokenB) external view returns (uint) {
        (tokenA, tokenB) = _sortTokens(tokenA, tokenB);
        return pairPools[tokenA][tokenB].length;
    }

    function getPairPools(address tokenA, address tokenB) external view returns (PoolInfo[] memory) {
        (tokenA, tokenB) = _sortTokens(tokenA, tokenB);
        return pairPools[tokenA][tokenB];
    }

    function isForwarder(address forwarder) external view override returns (bool) {
        return IForwarderRegistry(forwarderRegistry).isForwarder(forwarder);
    }

    function setForwarderRegistry(address newForwarderRegistry) external override onlyOwner {
        forwarderRegistry = newForwarderRegistry;
        emit UpdateForwarderRegistry(newForwarderRegistry);
    }

    function getSwapFee(
        address pool,
        address sender,
        address tokenIn,
        address tokenOut,
        bytes calldata data
    ) external view override returns (uint24 fee) {
        fee = IFeeManager(feeManager).getSwapFee(pool, sender, tokenIn, tokenOut, data);
    }

    function getProtocolFee(address pool) external view override returns (uint24 fee) {
        fee = IFeeManager(feeManager).getProtocolFee(pool);
    }

    function getFeeRecipient() external view override returns (address recipient) {
        recipient = IFeeManager(feeManager).getFeeRecipient();
    }

    function setFeeManager(address newFeeManager) external override onlyOwner {
        feeManager = newFeeManager;
        emit UpdateFeeManager(newFeeManager);
    }

    function setFactoryWhitelisted(address factory, bool whitelisted) external override onlyOwner {
        require(factory != address(0), "Invalid factory");
        isFactoryWhitelisted[factory] = whitelisted;
        emit SetFactoryWhitelisted(factory, whitelisted);
    }

    /// @dev Create a pool with deployment data and, register it via the factory.
    function createPool(address factory, bytes calldata data) external override returns (address pool) {
        // The factory have to call `registerPool` to register the pool.
        // The pool whitelist is checked in `registerPool`.
        pool = IPoolFactory(factory).createPool(data);
    }

    /// @dev Register a pool to the mapping by its config. Can only be called by factories.
    function registerPool(address pool, uint16 poolType, bytes calldata data, address token0, address token1) external override {
        require(isFactoryWhitelisted[msg.sender], "Not whitelisted");

        require(pool != address(0));

        // Double check to prevent duplicated pools.
        require(!isPool[pool], "Pool exists");

        // Encode and hash pool config to get the mapping key.
        bytes32 hash = keccak256(abi.encode(poolType, data));

        // Double check to prevent duplicated pools.
        require(getPool[hash] == address(0), "Pool hash exists");

        // Set to mappings.
        getPool[hash] = pool;
        isPool[pool] = true;
        pools.push(pool);

        pairPools[token0][token1].push(PoolInfo({
            pool: pool,
            poolType: poolType
        }));

        emit RegisterPool(msg.sender, pool, poolType, data);
    }
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity >=0.5.0;

/// @notice The manager contract to control fees.
/// Management functions are omitted.
interface IFeeManager {
    function getSwapFee(
        address pool,
        address sender,
        address tokenIn,
        address tokenOut,
        bytes calldata data
    ) external view returns (uint24);

    function getProtocolFee(address pool) external view returns (uint24);

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

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity >=0.5.0;

interface IForwarderRegistry {
    function isForwarder(address forwarder) external view returns (bool);
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity >=0.5.0;

interface IPoolFactory {
    function master() external view returns (address);

    function createPool(bytes calldata data) external returns (address pool);
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity >=0.5.0;

import "./IFeeManager.sol";
import "./IForwarderRegistry.sol";

/// @dev The master contract to create pools and manage whitelisted factories.
/// Inheriting the fee manager interface to support fee queries.
interface IPoolMaster is IFeeManager, IForwarderRegistry {
    event SetFactoryWhitelisted(address indexed factory, bool whitelisted);

    event RegisterPool(
        address indexed factory,
        address indexed pool,
        uint16 indexed poolType,
        bytes data
    );

    event UpdateForwarderRegistry(address indexed newForwarderRegistry);

    event UpdateFeeManager(address indexed newFeeManager);

    function wETH() external view returns (address);

    function feeManager() external view returns (address);

    function pools(uint) external view returns (address);

    function poolsLength() external view returns (uint);

    // Forwarder Registry
    function setForwarderRegistry(address) external;

    // Fees
    function setFeeManager(address) external;

    // Factories
    function isFactoryWhitelisted(address) external view returns (bool);

    function setFactoryWhitelisted(address factory, bool whitelisted) external;

    // Pools
    function isPool(address) external view returns (bool);

    function getPool(bytes32) external view returns (address);

    function createPool(address factory, bytes calldata data) external returns (address pool);

    function registerPool(address pool, uint16 poolType, bytes calldata data, address token0, address token1) external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

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

{
  "viaIR": false,
  "optimizer": {
    "enabled": true,
    "runs": 100,
    "details": {
      "yul": true
    }
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

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SyncSwapPoolMaster.PoolInfo[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"getPool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"poolType","type":"uint16"},{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"getPoolByTokens","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"pool","type":"address"}],"name":"getProtocolFee","outputs":[{"internalType":"uint24","name":"fee","type":"uint24"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"pool","type":"address"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"getSwapFee","outputs":[{"internalType":"uint24","name":"fee","type":"uint24"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"isFactoryWhitelisted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"forwarder","type":"address"}],"name":"isForwarder","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"isPool","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"pairPools","outputs":[{"internalType":"address","name":"pool","type":"address"},{"internalType":"uint16","name":"poolType","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"pairPoolsLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"pools","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolsLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"pool","type":"address"},{"internalType":"uint16","name":"poolType","type":"uint16"},{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"}],"name":"registerPool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"factory","type":"address"},{"internalType":"bool","name":"whitelisted","type":"bool"}],"name":"setFactoryWhitelisted","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newFeeManager","type":"address"}],"name":"setFeeManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newForwarderRegistry","type":"address"}],"name":"setForwarderRegistry","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"wETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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000000000000000000000000e5d7c2a44ffddf6b295a15c148167daaaf5cf34f00000000000000000000000095e0179d6b9b9886ea29e1ac23661817d14b17b9000000000000000000000000019f6f1d08d9b76969132aa6e29cb6a5cadc5785

-----Decoded View---------------
Arg [0] : _wETH (address): 0xe5D7C2a44FfDDf6b295A15c148167daaAf5Cf34f
Arg [1] : _forwarderRegistry (address): 0x95E0179D6b9b9886ea29e1AC23661817d14b17B9
Arg [2] : _feeManager (address): 0x019F6F1D08D9b76969132aa6e29cB6A5cadC5785

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000e5d7c2a44ffddf6b295a15c148167daaaf5cf34f
Arg [1] : 00000000000000000000000095e0179d6b9b9886ea29e1ac23661817d14b17b9
Arg [2] : 000000000000000000000000019f6f1d08d9b76969132aa6e29cb6a5cadc5785