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

pragma solidity ^0.8.0;

import "../interfaces/pool/IPool.sol";
import "../interfaces/master/IFeeManager.sol";

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

/// @notice The fee manager manages swap fees for pools and protocol fee.
/// The contract is an independent module and can be replaced in the future.
///
contract SyncSwapFeeManager is IFeeManager, Ownable {
    uint24 private constant MAX_PROTOCOL_FEE = 1e5; /// @dev 100%.
    uint24 private constant MAX_SWAP_FEE = 10000; /// @dev 10%.
    uint24 private constant ZERO_CUSTOM_FEE = type(uint24).max;

    /// @dev The default swap fee by pool type.
    mapping(uint16 => uint24) public defaultSwapFee; /// @dev `300` for 0.3%.

    /// @dev The custom swap fee by pool address, use `ZERO_CUSTOM_FEE` for zero fee.
    //mapping(address => uint24) public poolSwapFee;

    /// @dev The custom swap fee by tokens, use `ZERO_CUSTOM_FEE` for zero fee.
    mapping(address => mapping(address => uint24)) public tokenSwapFee;

    /// @dev The protocol fee of swap fee by pool type.
    mapping(uint16 => uint24) public defaultProtocolFee; /// @dev `30000` for 30%.

    /// @dev The custom protocol fee by pool address, use `ZERO_CUSTOM_FEE` for zero fee.
    mapping(address => uint24) public poolProtocolFee;

    /// @dev The recipient of protocol fees.
    address public feeRecipient;

    // Events
    event SetDefaultSwapFee(uint16 indexed poolType, uint24 fee);
    event SetTokenSwapFee(address indexed tokenIn, address indexed tokenOut, uint24 fee);
    event SetDefaultProtocolFee(uint16 indexed poolType, uint24 fee);
    event SetPoolProtocolFee(address indexed pool, uint24 fee);
    event SetFeeRecipient(address indexed previousFeeRecipient, address indexed newFeeRecipient);

    constructor(address _feeRecipient) {
        feeRecipient = _feeRecipient;

        // Prefill fees for known pool types.
        // 1 Classic Pools
        defaultSwapFee[1] = 1000; // 1%.
        defaultProtocolFee[1] = 50000; // 50%.

        // 2 Stable Pools
        defaultSwapFee[2] = 50; // 0.05%.
        defaultProtocolFee[2] = 50000; // 50%.
    }

    // Getters

    function getSwapFee(
        address pool,
        address /*sender*/,
        address tokenIn,
        address tokenOut,
        bytes calldata /*data*/
    ) external view override returns (uint24 fee) {
        fee = tokenSwapFee[tokenIn][tokenOut];

        if (fee == 0) {
            // not set, use default fee of the pool type.
            fee = defaultSwapFee[IPool(pool).poolType()];
        } else {
            // has a pool swap fee.
            fee = (fee == ZERO_CUSTOM_FEE ? 0 : fee);
        }
    }

    function getProtocolFee(address pool) external view override returns (uint24 fee) {
        fee = poolProtocolFee[pool];

        if (fee == 0) {
            // not set, use default fee of the pool type.
            fee = defaultProtocolFee[IPool(pool).poolType()];
        } else {
            // has a pool protocol fee.
            fee = (fee == ZERO_CUSTOM_FEE ? 0 : fee);
        }
    }

    function getFeeRecipient() external view override returns (address) {
        return feeRecipient;
    }

    // Setters

    function setDefaultSwapFee(uint16 poolType, uint24 fee) external onlyOwner {
        require(
            fee <= MAX_SWAP_FEE,
            "Invalid fee"
        );
        defaultSwapFee[poolType] = fee;
        emit SetDefaultSwapFee(poolType, fee);
    }

    function setTokenSwapFee(address tokenIn, address tokenOut, uint24 fee) external onlyOwner {
        require(
            fee == ZERO_CUSTOM_FEE ||
            fee <= MAX_SWAP_FEE,
            "Invalid fee"
        );
        tokenSwapFee[tokenIn][tokenOut] = fee;
        emit SetTokenSwapFee(tokenIn, tokenOut, fee);
    }

    function setDefaultProtocolFee(uint16 poolType, uint24 fee) external onlyOwner {
        require(
            fee <= MAX_PROTOCOL_FEE,
            "Invalid fee"
        );
        defaultProtocolFee[poolType] = fee;
        emit SetDefaultProtocolFee(poolType, fee);
    }

    function setPoolProtocolFee(address pool, uint24 fee) external onlyOwner {
        require(
            fee == ZERO_CUSTOM_FEE ||
            fee <= MAX_PROTOCOL_FEE,
            "Invalid fee"
        );
        poolProtocolFee[pool] = fee;
        emit SetPoolProtocolFee(pool, fee);
    }

    function setFeeRecipient(address _feeRecipient) external onlyOwner {
        // Emit here to avoid caching the previous recipient.
        emit SetFeeRecipient(feeRecipient, _feeRecipient);
        feeRecipient = _feeRecipient;
    }
}

// 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 IPool {
    struct TokenAmount {
        address token;
        uint amount;
    }

    /// @dev Returns the address of pool master.
    function master() external view returns (address);

    /// @dev Returns the vault.
    function vault() external view returns (address);

    /// @dev Returns the pool type.
    function poolType() external view returns (uint16);

    /// @dev Returns the assets of the pool.
    function getAssets() external view returns (address[] memory assets);

    /// @dev Returns the swap fee of the pool.
    function getSwapFee(address sender, address tokenIn, address tokenOut, bytes calldata data) external view returns (uint24 swapFee);

    /// @dev Returns the protocol fee of the pool.
    function getProtocolFee() external view returns (uint24 protocolFee);

    /// @dev Mints liquidity.
    function mint(
        bytes calldata data,
        address sender,
        address callback,
        bytes calldata callbackData
    ) external returns (uint liquidity);

    /// @dev Burns liquidity.
    function burn(
        bytes calldata data,
        address sender,
        address callback,
        bytes calldata callbackData
    ) external returns (TokenAmount[] memory tokenAmounts);

    /// @dev Burns liquidity with single output token.
    function burnSingle(
        bytes calldata data,
        address sender,
        address callback,
        bytes calldata callbackData
    ) external returns (TokenAmount memory tokenAmount);

    /// @dev Swaps between tokens.
    function swap(
        bytes calldata data,
        address sender,
        address callback,
        bytes calldata callbackData
    ) external returns (TokenAmount memory tokenAmount);
}

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

pragma solidity ^0.8.0;

/**
 * @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 {
    address private _owner;

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

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

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

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

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

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

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

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

{
  "optimizer": {
    "enabled": true,
    "runs": 200,
    "details": {
      "yul": false
    }
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

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000000000000000000000000a2a09f15c2ec6af1b8f9413c148334b231410bd8

-----Decoded View---------------
Arg [0] : _feeRecipient (address): 0xa2A09f15c2ec6aF1b8f9413c148334b231410bd8

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000a2a09f15c2ec6af1b8f9413c148334b231410bd8