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yashdesuyashdesu
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Merge pull request #8 from dev-protocol/feat-initial-implementation
feat: add SBT contracts
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17 files changed

+395
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‎.vscode/settings.json

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}
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],
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"editor.codeActionsOnSave": {
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"source.fixAll.eslint": true
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"source.fixAll.eslint": "explicit"
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}
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}

‎contracts/Admin.sol

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‎contracts/Example.sol

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‎contracts/SBT.sol

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// SPDX-License-Identifier: MPL-2.0
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pragma solidity =0.8.9;
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import {Strings} from "@openzeppelin/contracts/utils/Strings.sol";
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import {Base64} from "@devprotocol/util-contracts/contracts/utils/Base64.sol";
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import {ProxyAdmin} from "@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol";
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import {ERC721EnumerableUpgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721EnumerableUpgradeable.sol";
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import {ISBT} from "./interfaces/ISBT.sol";
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contract SBT is ISBT, ERC721EnumerableUpgradeable {
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using Base64 for bytes;
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using Strings for uint256;
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/// @dev Account with proxy adming rights.
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address private _proxyAdmin;
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/// @dev EOA with rights to allow(add)/disallow(remove) minter.
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address private _minterUpdater;
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/// @dev EOA with minting rights.
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mapping(address => bool) private _minters;
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/// @dev Holds the encoded metadata of a SBT token.
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mapping(uint256 => bytes) private _sbtdata;
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modifier onlyMinter() {
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require(_minters[_msgSender()], "Illegal access");
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_;
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}
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modifier onlyMinterUpdater() {
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require(_msgSender() == _minterUpdater, "Not minter updater");
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_;
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}
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function _setTokenURI(uint256 tokenId, bytes memory metadata) private {
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_sbtdata[tokenId] = metadata;
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emit SetSBTTokenURI(tokenId, metadata);
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}
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function _beforeTokenTransfer(
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address from,
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address to,
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uint256 tokenId,
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uint256 batchSize
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) internal virtual override {
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if (from == address(0)) {
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// allow mint
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super._beforeTokenTransfer(from, to, tokenId, batchSize);
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} else if (to == address(0)) {
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// disallow burn
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revert("SBT can not burn");
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} else if (to != from) {
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// disallow transfer
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revert("SBT can not transfer");
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} else {
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// disallow other
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revert("Illegal operation");
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}
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}
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function initialize(
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address minterUpdater,
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address[] memory minters
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) external initializer {
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__ERC721_init("Dev Protocol SBT V1", "DEV-SBT-V1");
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_minterUpdater = minterUpdater;
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for (uint256 i = 0; i < minters.length; i++) {
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_minters[minters[i]] = true;
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}
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}
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function setProxyAdmin(address proxyAdmin) external {
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require(_proxyAdmin == address(0), "Already set");
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_proxyAdmin = proxyAdmin;
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emit SetProxyAdmin(proxyAdmin);
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}
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function addMinter(address minter) external override onlyMinterUpdater {
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_minters[minter] = true;
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emit MinterAdded(minter);
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}
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function removeMinter(address minter) external override onlyMinterUpdater {
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_minters[minter] = false;
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emit MinterRemoved(minter);
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}
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function setTokenURI(
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uint256 tokenId,
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bytes memory metadata
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) external override onlyMinter {
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require(tokenId < currentIndex(), "Token not found");
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_setTokenURI(tokenId, metadata);
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}
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function mint(
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address to,
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bytes memory metadata
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) external override onlyMinter returns (uint256 tokenId_) {
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uint256 currentId = currentIndex();
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_mint(to, currentId);
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emit Minted(currentId, to);
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_setTokenURI(currentId, metadata);
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return currentId;
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}
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function _tokenURI(uint256 tokenId) private view returns (string memory) {
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(
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string memory name,
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string memory description,
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string memory tokenUriImage,
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StringAttribute[] memory stringAttributes,
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NumberAttribute[] memory numberAttributes
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) = abi.decode(
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_sbtdata[tokenId],
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(string, string, string, StringAttribute[], NumberAttribute[])
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);
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bool isStringDataPresent = false;
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string memory sbtAttributes = "";
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for (uint256 i = 0; i < stringAttributes.length; i++) {
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string memory attributeInString = string(
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abi.encodePacked(
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// solhint-disable-next-line quotes
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'{"trait_type": "',
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stringAttributes[i].trait_type,
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// solhint-disable-next-line quotes
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'",',
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// solhint-disable-next-line quotes
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' "value": "',
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stringAttributes[i].value,
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// solhint-disable-next-line quotes
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'"}'
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)
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);
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if (i == 0) {
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isStringDataPresent = true;
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sbtAttributes = attributeInString;
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} else {
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sbtAttributes = string(
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abi.encodePacked(sbtAttributes, ", ", attributeInString)
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);
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}
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}
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for (uint256 i = 0; i < numberAttributes.length; i++) {
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string memory attributeInString = string(
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abi.encodePacked(
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// solhint-disable-next-line quotes
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'{"trait_type": "',
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numberAttributes[i].trait_type,
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// solhint-disable-next-line quotes
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'",',
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// solhint-disable-next-line quotes
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' "display_type": "',
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numberAttributes[i].display_type,
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// solhint-disable-next-line quotes
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'",',
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// solhint-disable-next-line quotes
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' "value": "',
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numberAttributes[i].value.toString(),
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// solhint-disable-next-line quotes
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'"}'
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)
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);
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if (i == 0 && !isStringDataPresent) {
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sbtAttributes = attributeInString;
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} else {
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sbtAttributes = string(
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abi.encodePacked(sbtAttributes, ", ", attributeInString)
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);
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}
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}
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sbtAttributes = string(abi.encodePacked("[", sbtAttributes, "]"));
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return
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string(
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abi.encodePacked(
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"data:application/json;base64,",
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abi
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.encodePacked(
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// solhint-disable-next-line quotes
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'{"name":"',
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name,
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// solhint-disable-next-line quotes
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'", "description":"',
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description,
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// solhint-disable-next-line quotes
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'", "image": "',
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tokenUriImage,
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// solhint-disable-next-line quotes
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'", "attributes":',
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sbtAttributes,
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"}"
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)
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.encode()
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)
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);
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}
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function encodeMetadata(
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string memory name,
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string memory description,
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StringAttribute[] memory stringAttributes,
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NumberAttribute[] memory numberAttributes,
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string memory tokenUriImage
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) public pure override returns (bytes memory) {
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return
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abi.encode(
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name,
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description,
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tokenUriImage,
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stringAttributes,
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numberAttributes
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);
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}
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function tokenURI(
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uint256 tokenId
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) public view override returns (string memory) {
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return _tokenURI(tokenId);
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}
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function currentIndex() public view override returns (uint256) {
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return super.totalSupply();
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}
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function owner() external view returns (address) {
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return ProxyAdmin(_proxyAdmin).owner();
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}
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function tokensOfOwner(
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address tokenOwner
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) external view override returns (uint256[] memory) {
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uint256 length = super.balanceOf(tokenOwner);
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uint256[] memory tokens = new uint256[](length);
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for (uint256 i = 0; i < length; i++) {
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tokens[i] = super.tokenOfOwnerByIndex(tokenOwner, i);
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}
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return tokens;
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}
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}

‎contracts/UpgradeableProxy.sol

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