// File: contracts/BaseIncomeStream.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";

contract BaseIncomeStream  {
    uint256 public constant version = 1;
    mapping(address => mapping(uint256 => address[])) private incomeStreamContracts;
    mapping(address => mapping(uint256 => string)) private ownerMetadata;

    event AddIncomeStream(address indexed _erc721, uint256 indexed _tokenId, address _incomingStreamAddress, address _from);

    modifier whenNotZeroAddress(address user) {
        require(user != address(0), "NOT_A_ZERO_ADDRESS!");
        _;
    }

    /// @dev Function add income contract for an nft
    /// @param _erc721 erc721 contract address.
    /// @param _tokenId token ID.
    /// @param _incomingStreamAddress new price.
    function addIncomeStreamContract(address _erc721, uint256 _tokenId, address _incomingStreamAddress) whenNotZeroAddress(_incomingStreamAddress)  public {
        for (uint256 i = 0; i < incomeStreamContracts[_erc721][_tokenId].length; i++) {
            require(_incomingStreamAddress != incomeStreamContracts[_erc721][_tokenId][i], "CONTRACT_ALREADY_EXISTED");
        }
        incomeStreamContracts[_erc721][_tokenId].push(_incomingStreamAddress);
        emit AddIncomeStream(_erc721, _tokenId, _incomingStreamAddress, msg.sender);
    }

    /// @dev Function get income stream contract for an nft
    /// @param _erc721 erc721 contract address.
    /// @param _tokenId token ID.
    function getIncomeStreamContracts(address _erc721, uint256 _tokenId) external view returns(address[] memory){
        return incomeStreamContracts[_erc721][_tokenId];
    }

    /// @dev Function add owner metadata uri
    /// @param _erc721 erc721 nft contract.
    /// @param _tokenId token ID.
    /// @param _metadataUrl metadata json uri.
    function addOwnerMetadata(address _erc721, uint256 _tokenId, string memory _metadataUrl)  public {
        IERC721 erc721 = IERC721(_erc721);
        require(erc721.ownerOf(_tokenId) == msg.sender, "INVALID_OWNER");
        ownerMetadata[_erc721][_tokenId] = _metadataUrl;
    }

    /// @dev Function get owner metadata uri
    /// @param _erc721 erc721 nft contract.
    /// @param _tokenId token ID.
    function getOwnerMetadata(address _erc721, uint256 _tokenId)  public view returns(string memory) {
        return ownerMetadata[_erc721][_tokenId];
    }
}
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

// File: @openzeppelin/contracts/utils/introspection/IERC165.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}