Composing into Contracts

Contracts can easily use EtherEthos data while maintaining a fallback system in case an account isn't composable (either because they haven't set up their EtherEthos profile or because they toggled off composability)

This was implemented on mainnet Ethereum for the BLONKS collection with this contract: https://etherscan.io/address/0xd4e6086dA43CfB8AB021A5da1f08DA828ad73b85#code

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.7;

import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

/// @title BLONKS Dynamic Description Contract v3.0.0
/// @author Matto AKA MonkMatto
/// @notice This contract creates dynamic token descriptions for BLONKS.
/// @dev For flexibility, the descriptions are stored in an array of strings that are assembled with dynamic data.
/// An external contract is added for additional flexibility.
/// @custom:experimental This is an experimental contract.
/// @custom:security-contact [e-mail]

interface iEE {
    function assembleBasicData(
        address _account
    ) external view returns (string[] memory);

    function isComposable(address _account) external view returns (bool);
}

contract DynamicDescriptions is Ownable {
    using Strings for string;

    address public EEcontract;
    bool public EEcontractActive;

    string private EElinkBase;
    string[] private descText;

    function setDescriptionText(string[] memory _text) external onlyOwner {
        for (uint256 i = 0; i < _text.length; i++) {
            descText.push(_text[i]);
        }
    }

    function getDescriptionText() external view returns (string[] memory) {
        return descText;
    }

    function setEEcontract(address _EEcontract) external onlyOwner {
        EEcontract = _EEcontract;
    }

    function setEElinkBase(string memory _EElinkBase) external onlyOwner {
        EElinkBase = _EElinkBase;
    }

    function toggleEEcontractActive() external onlyOwner {
        EEcontractActive = !EEcontractActive;
    }

    function updateDescriptionTextIndex(
        uint256 _index,
        string memory _text
    ) external onlyOwner {
        descText[_index] = _text;
    }

    function buildDynamicDescription(
        address _ownerAddy,
        uint256 _shapeshiftCount,
        string memory _collectionDescription,
        string memory _shifterName,
        uint256 _shifterActive,
        uint256 _shifterMax
    ) external view returns (string memory) {
        string memory shapeshiftDetail = _shapeshiftCount > 0
            ? string(
                abi.encodePacked(descText[9], Strings.toString(_shapeshiftCount), descText[10])
            )
            : "";
        string memory dynamicText = EEcontractActive && iEE(EEcontract).isComposable(_ownerAddy)
            ? _incorporateEE(_ownerAddy)
            : descText[0];
        dynamicText = string(
            abi.encodePacked(
                dynamicText,
                descText[11],
                descText[12],
                _shifterName
            )
        );
        dynamicText = string(
            abi.encodePacked(
                dynamicText,
                shapeshiftDetail,
                descText[13],
                Strings.toHexString(uint160(_ownerAddy), 20),
                descText[14]
            )
        );
        dynamicText = string(
            abi.encodePacked(
                dynamicText,
                _shifterName,
                descText[15],
                Strings.toString(_shifterActive),
                descText[16],
                Strings.toString(_shifterMax),
                descText[8]
            )
        );
        dynamicText = string(
            abi.encodePacked(
                dynamicText,
                descText[17],
                _collectionDescription,
                descText[18]
            )
        );
        return dynamicText;
    }

    function _incorporateEE(
        address _ownerAddy
    ) internal view returns (string memory) {
        string[] memory EEbasicData = iEE(EEcontract).assembleBasicData(
            _ownerAddy
        );
        string memory EEdynamicText;
        if (
            bytes(EEbasicData[0]).length +
                bytes(EEbasicData[1]).length +
                bytes(EEbasicData[2]).length >
            0
        ) {
            EEdynamicText = descText[1];
        }
        if (bytes(EEbasicData[0]).length > 0) {
            EEdynamicText = string(
                abi.encodePacked(EEdynamicText, descText[2], EEbasicData[0])
            );
        }
        if (bytes(EEbasicData[1]).length > 0) {
            EEdynamicText = string(
                abi.encodePacked(EEdynamicText, descText[3], EEbasicData[1])
            );
        }
        uint256 priorityLink = uint256(uint8(bytes(EEbasicData[5])[0])) - 48;
        if (bytes(EEbasicData[priorityLink + 2]).length > 0) {
          EEdynamicText = string(abi.encodePacked(EEdynamicText, descText[priorityLink + 4], EEbasicData[priorityLink + 2]));
        }
        EEdynamicText = string(
            abi.encodePacked(
                EEdynamicText,
                descText[7],
                EElinkBase,
                Strings.toHexString(uint160(_ownerAddy), 20),
                descText[8]
            )
        );
        return EEdynamicText;
    }
}