// File: @openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../utils/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 () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

// File: @openzeppelin/contracts/utils/Context.sol



// 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;
    }
}

// File: contracts/royalties/RoyaltyFeeRegistry.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";

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

/**
 * @title RoyaltyFeeRegistry
 * @notice It is a royalty fee registry for the Helixmeta exchange.
 */
contract RoyaltyFeeRegistry is IRoyaltyFeeRegistry, Ownable {
    struct FeeInfo {
        address setter;
        address receiver;
        uint256 fee;
    }

    // Limit (if enforced for fee royalty in percentage (10,000 = 100%)
    uint256 public royaltyFeeLimit;

    mapping(address => FeeInfo) private _royaltyFeeInfoCollection;

    event NewRoyaltyFeeLimit(uint256 royaltyFeeLimit);
    event RoyaltyFeeUpdate(address indexed collection, address indexed setter, address indexed receiver, uint256 fee);

    /**
     * @notice Constructor
     * @param _royaltyFeeLimit new royalty fee limit (500 = 5%, 1,000 = 10%)
     */
    constructor(uint256 _royaltyFeeLimit) {
        require(_royaltyFeeLimit <= 9500, "Owner: Royalty fee limit too high");
        royaltyFeeLimit = _royaltyFeeLimit;
    }

    /**
     * @notice Update royalty info for collection
     * @param _royaltyFeeLimit new royalty fee limit (500 = 5%, 1,000 = 10%)
     */
    function updateRoyaltyFeeLimit(uint256 _royaltyFeeLimit) external override onlyOwner {
        require(_royaltyFeeLimit <= 9500, "Owner: Royalty fee limit too high");
        royaltyFeeLimit = _royaltyFeeLimit;

        emit NewRoyaltyFeeLimit(_royaltyFeeLimit);
    }

    /**
     * @notice Update royalty info for collection
     * @param collection address of the NFT contract
     * @param setter address that sets the receiver
     * @param receiver receiver for the royalty fee
     * @param fee fee (500 = 5%, 1,000 = 10%)
     */
    function updateRoyaltyInfoForCollection(
        address collection,
        address setter,
        address receiver,
        uint256 fee
    ) external override onlyOwner {
        require(fee <= royaltyFeeLimit, "Registry: Royalty fee too high");
        _royaltyFeeInfoCollection[collection] = FeeInfo({setter: setter, receiver: receiver, fee: fee});

        emit RoyaltyFeeUpdate(collection, setter, receiver, fee);
    }

    /**
     * @notice Calculate royalty info for a collection address and a sale gross amount
     * @param collection collection address
     * @param amount amount
     * @return receiver address and amount received by royalty recipient
     */
    function royaltyInfo(address collection, uint256 amount) external view override returns (address, uint256) {
        return (
            _royaltyFeeInfoCollection[collection].receiver,
            (amount * _royaltyFeeInfoCollection[collection].fee) / 10000
        );
    }

    /**
     * @notice View royalty info for a collection address
     * @param collection collection address
     */
    function royaltyFeeInfoCollection(address collection)
        external
        view
        override
        returns (
            address,
            address,
            uint256
        )
    {
        return (
            _royaltyFeeInfoCollection[collection].setter,
            _royaltyFeeInfoCollection[collection].receiver,
            _royaltyFeeInfoCollection[collection].fee
        );
    }
}
// File: contracts/royalties/interfaces/IRoyaltyFeeRegistry.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;

interface IRoyaltyFeeRegistry {
    function updateRoyaltyFeeLimit(uint256 _royaltyFeeLimit) external;

    function updateRoyaltyInfoForCollection(
        address collection,
        address setter,
        address receiver,
        uint256 fee
    ) external;

    function royaltyInfo(address collection, uint256 amount)
        external
        view
        returns (address, uint256);

    function royaltyFeeInfoCollection(address collection)
        external
        view
        returns (
            address,
            address,
            uint256
        );
}